Vertex Standard FT-950 manual

FT -950 Operating Manual V ertex S tandard Co., Ltd. 1 About This Manual . . . The FT -950 is a leading-edge transceiver wit h a number of new and exciting features, some of which may be unfamiliar to you. In order to gain the most enjoyment and operating efficiency from your FT -950, we recommend that you read this manual in its entirety , and kee[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 2 Y ou may select, in the front end, one of tw o RF preamplifiers, or IPO (Intercept Point Optimization) utilizing direct feed to the first mixer , and/or three levels of RF attenuation in 6-dB steps. The FT -950 receiver utilizes DSP filtering, in corporating many of the features of the FT DX 90[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 3 Interfacing for digital modes is extremely si mple with the FT -950, thanks to dedicated RTTY/PKT connection jack on the rear panel. Optimization of the filter passbands, DSP settings, carrier insertion point, and display offset are all possible via the Menu programming system. The Y aesu CA T [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 4 Resetting Memories (Only) 7 Menu Resetting 7 Full Reset 7 Installation and Interconnections 8 Antenna Considerations 8 About Coaxial Cable 8 Grounding 9 Connection of Antenna and Power Cables 10 Connection of Microphone and Headphone 1 1 Key , Keyer , and Computer-Dri ven Keying Interconnection[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 5 Using the UP/DOWN switches of the supplied MH-31B8 Hand Microphone 49 Receiver Operation (Fro nt End Block Diagram) 50 IPO (Intercept Point Optimization) 51 A TT 51 RF Gain (SSB/CW/AM Modes) 52 Advanced Interference-Suppression Features: RF Front End 53 Using the VRF (V ariable RF Front-end Fil[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 6 MONITOR (SSB/AM/FM modes) 74 Split Operation Using the TX Clarifier (VFO-A Operation) 75 Split-Frequency Operation 76 VFO T racking Feature 76 Quick Split Operation 77 CW Mode Operation 78 Setup for Straight Key (and Stra ight Key emulation) Operation 78 Using the Built-in Electronic Keyer 79 F[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 7 Moving Memory Data to the Main Band (VFO-A) 98 Memory T une Operation 98 Memory Groups 99 Memory Group Assignment 99 Choosing the Desired Memory Group 99 Operation on Alaska Emergency Freque ncy: 5167.5 kHz (U.S. V e rsion Only) 100 VFO and Memory Scanning 102 VFO Scanning 102 Memory Scan 103 P[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 8 TX AUDIO Group 124 TX GNRL Group 125 Specifications 126 Accessories & Options Supplied Accessories Hand Microphone 1 pc MH-31B8 DC Power Cord 1 pc T9025225 Separe Fuse (25A) 1 pc Q0000074 4-pin DIN Plug 1 pc P0091004 5-pin DIN Plug 1 pc P0091006 1/4-inch 3-contact Plug 1 pcs P0090008 3.5 mm[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 9 Power Connection The DC power connector for the FT -950 must only be connected to a DC source providing 13.8 V o lts DC (±10 %), and capable of at least 22 Amperes of current. Always observe proper polarity when making DC connection: The RED DC power lead connects to the Positive (+) DC termin[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 10 The torque (drag) of the Main T uning Dial knob may be adjusted according to your preferences. Simply hold down the rear skir t of the knob, and while holding it in place rotate the knob itself to the right to reduce the drag or to the left to increase the drag. A vailable adjustment range is [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 11 impedance at the desired operating frequency . While minor excursions from the 50-Ohm specification are of no consequence, the transceiver ’s Automatic Antenna T uner may not be able to reduce the impedanc e mismatch to an acceptable value if the Standing W ave Ratio (SWR) present at the Ant[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 12 into the ground. If multiple ground rods are used, they should be positioned in a “V” configuration, and bonded toge ther at the apex of the “V” which is nearest the station location. Use a heavy , braided cable (such as the discarded shie ld from type RG-213 coaxial cable) and strong [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 13  Do not install this apparatus in a mechan ically-unstable location, or where objects may fall onto this product from above.  T o minimize the possibility of interference to home entertainment devices, take all precautionary steps including separation of TV/FM antennas from Amateur trans[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 14 Note:  Please refer to the VL-1000 Operating Manual for details regarding amplifier operation.  Please do not attempt to connect or disco nnect coaxial cables when your hands are wet. About the CONTROL Cable The VL-1000 may be operated with the FT -950 whether or not the CONTROL Cable is[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 15 Front Panel Controls & Switches 1. [POWER] Switch Press and hold in this switch for two second s to turn the transceiver on. Press and hold in this switch for two seconds, similarly , to turn the transceiver off. 2. [ANT 1-2] Switch Pressing this selects either the ANT 1 or 2 jack on the r[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 16 5. [VOX] Switch This button enables automatic voice-actuat ed transmitter switching in the SSB, AM, and FM modes. While activated, the LED in side this button glows red. The controls affecting VOX operation are via the Menu item “1 14 TGEN V GAIN”, “1 15 TGEN VOX DL Y”, and “1 16 TGE[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 17 of the incoming CW signal (precisely the same pitch), you will be “zero beating” your transmitted signal on to the frequency of the other station. The offset tone frequency will indicate at the frequency display area of the display while this button is pressed. 9. [BK-IN] Switch This butto[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 18 13. [METER] Switch This button determines the function of the meter during transmission. Press this button to change the meter func tion in the transmit mode as follows: ALC  SWR  ID  VDD  COMP  ALC …… ALC: Indicates the relative ALC voltage. SWR: Indicates the Standing W av[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 19 pseudo-straight-key operation. Note: Y ou cannot use a 2-contact plug in this jack (to do so produces a constant “key down” condition). 18. [MONI] Knob This knob adjusts the audio level of the transmit RF monitor during transmission (relative to the [AF GAIN] knob), wh en activated by the [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 20 Pressing this button to reset the status of th e functions which is selected from the five buttons at the left of this button to factory default. 26. [SELECT] Knob This knob is used to adjust the status of the functions depending on the five buttons located above this knob. FUNCTION Switch EFF[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 21 [STO] (Store) Button Pressing this button copies VFO-A conten ts (frequency , mode, bandwidth, and also repeater direction/shift fr equency and CTCSS functions on the FM mode) into consecutive QMB Memories. [RCL] (Recall) Button Pressing this button recalls one of up to five Quick Memory Bank [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 22 33. [MENU] Switch This button is used for gaining access to the Menu system, for configuring various transceiver characteristics. Menu operation is described in detail, in this manual, beginning on page ??. Important note: pressing this button mome ntarily activates the Menu, and the Menu item[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 23 Advice: This switch will be affects to the VFO-A and VFO-B independently . 41. [LOCK] Switch This button toggles locking of the Main T uning Dial knob (for VFO-A frequency tuning) and the [CLA/VFO-B] knob (for VFO-B freque ncy tuning). When the button is active, the Main T uning Dial knob and [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 24 Pressing and holding in this key for two seconds (until the double beep) cop ies the current operating data into the currently selected memory channel, overwriting any previous data stored there. 47. [BAND] Keys These keys allow one-touch selection of the desired Amateur band (1.8 ~ 50 MHz). W[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 25 the FL T column of the Block Diagram Display on the display . Advice : Because the roofing filter is in the first IF , the protection it provides against interference is quite significant. When set to AUTO, the SSB bandwidth is 6 kHz, whi le CW is 3 kHz and FM/RTTY are 15 kHz. On a crowded SSB[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 26 56. [CLEAR] Switch Pressing this button clears out any freque ncy offset you have programmed into the Clarifier register (thereby setting the offset to “Zero”). 57. [(VFO-B)RX] Indicator/Switch This is the button that switches the receiving frequency to the VFO-B, the green LED imbedded wi[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 27 FUNCTION Switch EFFECT [(VFO-B)RX] Indicator/Switch Rotate this knob to adjust the VFO-B frequency by a same step as the Main T uning Dial knob. The frequency display will be chan ged to the VFO-B frequency . [BAND] button Rotate this knob to select the amateur band. [GRP] button Rotate this k[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 28 8. Multi Function Meter There are five functions multi-meter . The bo ttom five selections in the list below are transmit functions, determined by th e selections of the [METER] switch. ALC: Indicates the relative ALC voltage. SWR: Indicates the Standing W ave Ratio (Forward: Reflected), from [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 29 14. Block Diagram Display ANT (1, 2): Indicates the antenna selected for operatio n by the front panel’ s [ANT 1-2] button. A TT (OFF , –6 dB, –12 dB, –18 dB): Indicates the attenuation level selected for operation by the front panel’ s [AGC] button. FL T (µ-TUNE, THRU): Indicates t[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 30 20. SHIFT Indicates the peak position of the DSP IF filter . 21. TX This indicator appears during transmission. 22. BUSY This indicator appears whenever the receiver squelch is open. If this indicator is not showing, and reception seems to have been lo st on the receiver for no apparent reason[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 31 µ-TUNE filter . 28. CLAR This indicator appears whenever the Clarifier function is activated. 29. MR This indicator appears when the FT -950 is in the Memory Recall mode. 30. MT This indicator appears when the FT -950 is in the Memory T une mode to indicate that the memory contents have been [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 32 3. GND Use this terminal to connect the transceive r to a good earth ground, for safety and optimum performance. Use a large diameter , short braided cable for making ground connections, and please refer to page ?? for other notes about proper grounding. 4. µ-TUNE Jacks These jacks are used f[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 33 recording or external amplification. Peak signal level is 30 mVp-p at 10 kOhms. 1 1. REM (REMOTE) Jack By plugging in the optional FH-2 Remote Control Keypad to th is gold-plated jack, direct access to the FT -950 CPU is provided for control functions such as contest memory keying, plus freque[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 34 Basic Operation: Receiving on Amateur Bands Before turning on main power , please verify the following items once more.  Have you made all ground connections securely? See page ?? for details.  Do you have your antenna(s) connected to the rear-panel Antenna jack(s)? See page ?? for detai[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 35  One-touch selection of each Amat eur band between 1.8 and 50 MHz is provided.  The FT -950 utilizes a triple band-stack VF O selection technique, which permits you to store up to three favorite freq uencies and modes onto each band’s VFO register . For example, you may store one frequ[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 36 knob will degrade the ability of the re ceiver to detect weak signals. 9. Rotate the Main T uning Dial knob to tune around the band, and begin normal operation. Advice:  Clockwise rotation of the Main T uning Dial knob increases the operating frequency , one “step” of the synthesizer at[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 37 [CLAR/VFO-B] knob will allow se lection the memory channel. 3. Memory channels “US1” through “US5” are pre-programmed, at the factory , with the permitted frequencies in the 5 MHz ban d, and the USB mode is auto matically selected on these channels. 4. T o exit from 60-meter operation [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 38 The T uning Offset Indicator provides a graphi cal representation of the Clarifier offset. On CW , the T uning Offset Indicator is used for CW Center T uning, instead of Clarifier Offset, as the transceiver is configured at the factory . If you wish to change this, so that the Clarifier Offset[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 39 Using the VFO-B The VFO-B works in a similar manner to the VFO-A, which you should be familiar by now . However , the VFO-B frequency selects by the [CLAR/VFO-B] knob instead of the Main T uning Dial knob. The VFO-B provides simple split (transmit/receive) frequency operation via the combinati[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 40 the band-selection loop (when using the [CLAR/VFO-B] knob for band selection). The available choices are 1.8/3.5/5/7/ 10/14/18/21/24/28/50/GE (General Band). 4. Press the [ENT] button to set the omi ssion command to ON. The “E” (Enable) notation at the right of the band notation will chang[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 41 W ith this configuration, successive mome ntary presses of the [14] MHz band button will allow you to toggle sequentially through these three VFOs. C.S (Custom Switch) An often-used Menu mode selection may be brought out to the front panel’ s [C.S] button. C.S Setup 1. Press the [MENU] butto[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 42 When you are through exercising rotator co ntrol, press the [ENT] button momentarily . The frequency display will return to the main display field. Important Note:  Set to match the starting point of your rotator control indicator needle via the Menu item “01 1 DISP RTR STU”. The defaul[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 43 applied to the current VFO frequency . The imbedded LED in the [BAND] button will glow orange in the latter case. When tuning in 1 MHz steps, clockwise rotation of the [CLAR/VFO-B] knob will increase the frequency , while counter-clock wise rotation will decrease the frequency . Using the [UP][...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 44 CONTOUR Filter (See page ??) The DSP Contour filter is a unique capability providing either nulling or peaking of tunable segments of the receiver passband, so as to suppress interference or excessive frequency components on an incoming signal, or to peak those tunable frequency segments. The [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 45 1. Press the [A TT] button several times to set the desired attenuation level, per the chart below . OFF: Attenuator is Off – 6 dB: The incoming signal power is reduced by 6 dB (Signal voltage reduced by 1/2) – 12 dB: The incoming signal power is reduced by 12 dB (Signal voltage reduced by[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 46 The narrow bandwidth is especially useful on the low bands, when many strong signals are being received via NVIS propagation (N ear V e rtical-Incidence Signals) within a narrow bandwidth. The added protection for the RF stage is especially helpful in preventing IMD and blocking. µ-T une Oper[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 47 selectivity on the order of a few dozen kHz at -6 dB, at the expense of a few dB of system gain on bands where noise figure is seldom an issue. Y ou will notice that the S-meter deflection, when µ-T une is engaged, is slightly less than when it is out of the circuit; this is normal. If your a[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 48 VFO-A and VFO-B.  On the 10 MHz and lower bands, it gene rally is not necessary to use any preamplifier at all; selecting the “ON” position described above will increase the strong-signal-handling capability of the re ceiver , and generally will result in more pleasant reception due to [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 49 automatic setting, and select a more narrow Roofing Filter . Noise blanking may be compromised, however , with a tighter Roofing Filter in the line. T erminology: A “Roofing Filter ,” as its name implies, places a “Roof” over the receiver ’ s IF system bandwidth. This “Roof” prot[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 50 Advice: Press the [SELECT] knob to to ggle the Menu item display between “067 RGEN” and “NB L VL”. Rotate the [CLAR/VFO-B] knob to the point where the offending noise is best reduced or eliminated. 3. Press and hold in the [MENU] button fo r two seconds to lock in the new setting and e[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 51 Scope) the effect of the Contour control while listening to the effect on the signal, and this will help build your intuition on how best to use Contour tuning in the future. Reference to Figure (B), this show an “indenta tion” of the Contour filter is center of the passband. The Contour f[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 52 each VFO stack of the VFO-A and VFO-B. Referring to Figure (A), note the depiction of the IF DSP filter as the thick line, with the [SELECT(SHIFT)] knob in the 12 o’clock position. In Figure (B), an interfering signal has appeared inside the original pass band. In Figure (C), you can see the[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 53 Using IF SHIFT and WIDTH T ogether The IF SHIFT and V ariable IF WIDTH feat ures together form a very effective interference-fighting filtering system. For example, in Figure “A”, you can see how interference has appeared both on the high and low sides of the desired signal. Press the [WID[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 54 pressing the [WIDTH] button), and IF SHI FT still is operational (requires pressing the [SHIFT] button). For many applications, you may find that simple pressing the [NAR] button instead of adjustment of th e [WIDTH] knob, may be satisfactory for interference reduction  When you press the [[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 55 eliminate the incoming interference. Digital NOTCH Filter (DNF) Operation The Digital NOTCH Filter (DNF) is an effect ive beat-cancelling filter that can null out a number of interfering beat notes inside th e receiver passband. Because this is an Auto-Notch feature, there is no adjust ment kn[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 56 3. Rotate the [CLAR/VFO-B] knob to select the setting that most effectively reduces the noise level. The “DNR” icon will appear in the display . 4. Press and hold in the [MENU] button fo r two seconds to save the new setting and exit to normal operation. T o disable the DNR system, just re[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 57 system receiver gain in different ways. As a first step in dealing with high noise or a crowded, high-level signal environment, the IPO generally should be the first feature engaged, if the frequency is low enough to allow the preamplifier to be bypassed. Thereafter , the RF Gain and Attenuato[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 58 LSB/USB SLOW CW F AST AM F AST FM F AST RTTY SLOW PKT(FM) F AST PKT(LSB) SLOW Advice:  The AGC selection will be memorized inde pendently on each VFO stack of the VFO-A and VFO-B.  If the AGC receiver-recovery time is set to the “Off” by pressing and hold ing in the [AGC] button, the[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 59 FT -950 will be silenced and the green LED in the [(VFO-B)RX] Indicator/Switch will blink. T o restore reception, just press the blinki ng [(VFO-B)RX] Indicator/Switch once more. Advice: If you press the [POWER] switch mo mentarily while the transceiver is turned on, the transceiver ’ s audi[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 60 Advice:  ALC meter deflection may be caused by exce ssive drive power , bu t also by reflected power detected in the antenna system. If the impedance presented to the transceiver is different from 50 Ohms, ALC meter action may be observed that is not related to the proper setting of the [MI[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 61 Using the Automatic Antenna T uner The Automatic Antenna T uner (hereinafter re ferred to as the “A TU”) built into each FT -950 is crafted to ensure a 50-Ohm load for the final amplifier stage of the transmitter . W e recommend that the A TU be used whenever you operate on the FT -950. Ad[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 62 blinking). 4. While tuning around the band using the Main T uning Dial knob, you will observe that the “TUNER” icon blinks moment arily every 10 kHz. This momentary blinking indicates that a new tuning window has been entered. If you want to save tuning data associated with this 10 kHz win[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 63 In Figure 2, the operator has changed frequency , and the “HI SWR” icon has appeared. The operator presses and holds in the [TUNE] button for two seconds to begin impedance matching using the A TU. If a high SWR conditions exists (above 3: 1), corrective action must be taken in the antenna[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 64 (300-2700 Hz), 4-26 (400-2600 Hz) , 3000WB and the default is 3-27 (300-2700 Hz). A wider bandwidth will provide greater fidelity , while a narrow bandwidth will compress the available transmitter power into less spectrum, resulting in more “talk power” for DX pile-ups. 4. Press and hold i[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 65 Quick Point: The Parametric Equalizer is a unique technique for adjusting the signal quality . Because the three ranges may be adjust ed so precisely , it is possible to craft a response that provides a more natural and pleasant sound than you have ever experienced before. Effective “talk po[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 66 Advice: If you do not find the Menu item number , press the [SELECT] knob momentarily to switch the Menu item name to the Menu item number . 7. Rotate the [CLAR/VFO-B] knob to perf orm adjustments to a particular Menu item. 8. Close the PTT switch, and speak into the microphone while listening[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 67 Parametric Gain “092 T AUD EQ1 L VL” “–10” (–10dB) ~ “+10” (+10dB) “095 T AUD EQ2 L VL” “–10” (–10dB) ~ “+10” (+10dB) “098 T AUD EQ3 L VL” “–10” (–10dB) ~ “+10” (+10dB) Q (Bandwidth) “093 T AUD EQ1 BW” “1” ~ “10” “096 T AUD EQ2 BW?[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 68 5. Adjust the compression level of th e Speech Processor via the Menu Item “109 TGEN PROCL VL” so that the meter needle deflects to not more than “10 dB” on the COMP meter scale. See Box at the right for details of the setting. 6. T o switch the Speech Processor off, pr ess the [PROC] [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 69 T ransmitter Convenience Features V oice Memory (SSB/AM/FM modes: Requir es optional DVS-XX V oice Memory Unit) Y ou may utilize the V oice Memory capability of the FT -950 for repetitive messages. The V oice Memory system includes five memories capable of storing up to 20 seconds of voice aud[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 70 T ransmitting the Recorded Message 1. Select the LSB, USB, AM, or FM mo de using the front panel [MODE] buttons. 2. Press the front panel’s [BK-IN] button. A “BK-IN” icon will appear in the display . 3. Press and hold the [SELECT] knob for tw o seconds to activate the V oice Memory Unit.[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 71 button must be off).  Press the FH-2’ s [1] ~ [5] key (whichever one you just recorded in). Y ou will hear the contents of the voice memory you just recorded. Advice: Y ou may adjust the playback level of the recording via Menu item “014 DVS RX LV L ” . T ransmitting the Recorded Mess[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 72 “1 15 TGEN” and “V GAIN”.  While speaking into the microphone, ro tate the [CLAR/VFO-B] knob to the point where the transmitter is quickly ac tivated by your voice, without causing background noise to activate the transmitter .  When you have selected the optimum se tting, press [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 73  If you are using the speaker for monito ring, instead of headphones, excessive advancement of the [MONI] knob can caus e feedback to occur . Additionally , this feedback can cause the VOX system to hang up in a loop, making it impossible to return to receive. Therefore, we recommend the us[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 74 Quick Point: When attempting to work a DX statio n on CW , in a split-frequency pile-up, remember that a large number of other statio ns may also be using Y aesu transceivers with capability similar to that of your FT -950. On the DX side of the pile-up, everyone calling precisely on the same [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 75 During Split operation, the VFO-A register will be used for reception, while the VFO-B register will be used for transmission. If yo u press the [SPLIT] button once more, Split operation will be cancelled. Y ou may also press the [(VFO-A)TX] Indicato r/Switch to return transmit frequency contr[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 76 [(VFO-A)TX] Indicator/Switch: “OFF” (LED Off) [(VFO-B)RX] Indicator/Switch: “OFF” (LED Off) [(VFO-B)TX] Indicator/Switch: “ON” (LED glows Red) Quick Points:  The operating mode applied to the VFO-B re gister will be the same as that in use on the VFO-A register .  The offset [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 77 will appear in the display if you select CW Reverse. 2. Rotate the Main T uning Dial knob to select the desired operating frequency . 3. Press the [BK-IN] button to engage auto matic activation of the transmitter when you close the CW key . The “BK-IN” icon will appear in the display . Adv[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 78 and dashes as you send them. This allo ws you to hear a station that suddenly starts transmitting on your frequenc y , while you are in the midst of a transmission. Using the Built-in Electronic Keyer Connect the cable from your keyer paddle to the front or rear pa nel [KEY] jack. 1. Press the[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 79 knob for a comfortable listening level on the CW sidetone. T o disable the CW monitor , press the [MONI] button (t he “MONI” icon is disappeared).  If you set the [BK-IN] button to Off, you may practice your sending without having the signal go out over the air (sidetone only).  If y[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 80 Selecting the Keyer Operating Mode The configuration of the Electronic Keyer may be customized ind ependently for the front and rear KEY jacks of the FT -950. This permits utilization of Automatic Character Spacing (ACS), if de sired, as well as the use of the electronic keyer via the front ja[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 81 of your transmitted signal, and if you adjust the receiver frequency to match the pitch of the received CW signal to that of the Spot tone, your transmitted signal will be precisely matched to that of the other station. Release the [SPOT] button to turn the Spot tone off. Advice:  In a toug[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 82 Using CW Reverse If you experience a difficult interference si tuation, where an interfering station cannot readily be eliminated, you may wish to try re ceiving using the opposite sideband. This may throw the interfering station’ s frequency in a direction that may lend itself more readily [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 83 3. Rotate the [SELECT] knob to select Menu item “044 A1A DELA Y”. Advice: Press the [SELECT] knob to to ggle the Menu item display between “044 A1A” and “DELA Y”. 4. Start sending, rotate th e [ C L A R / V F O - B ] k n o b s o t h a t t h e h a n g t i m e i s a s y o u prefer fo[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 84 Message Memory Five memory channels capable of retaining 50 characters total are provided (using the P ARIS standard for characters and word length). Example: CQ CQ CQ DE W6DXC K (19 characters) T erminology: P ARIS W ord Length: By convention in the Amateur industry (utilized by ARRL and othe[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 85 Keyer . Indicates one of following indication in Multi-Display W indow on the display; “rEC1”, “rEC2”, “r EC3”, “rEC4”, “rEC5”, “PL Y1”, “PL Y2”, “PL Y3”, “PL Y4”, and “PL Y5”. 5. Rotate the [SELECT] knob to select the CW Memory Register (“rEC1” thro[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 86 2. Press and hold the [SELECT] knob for tw o seconds to activate the Contest Memory Keyer . Indicates one of following indication in Multi-Display W indow on the display; “rEC1”, “rEC2”, “r EC3”, “rEC4”, “rEC5”, “PL Y1”, “PL Y2”, “PL Y3”, “PL Y4”, and “PL [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 87 Contest Number (“Countup”) feature. Example 2: 599 10 200 # K (15 characters) Storing a Message into Memory 1. Press the [MENU] button to enter the Menu mode. 2. Rotate the [SELECT] knob to select th e CW Memory Register into which you wish to store the message; for now , we are ju st sele[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 88 termination of the message. 8. Press and hold in the [S ELECT] button for two seconds to exit, once all characters (including “}”) have been programmed. Advice: Momentarily pressing the [SELECT ] button is canceling the programming. Deleting Previously-stored Characters Use the Main T unin[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 89 the programmed message on the air . Note: If you subsequently decide to use the “Message Memory” technique for memory storage, please note that the contents of a message stored using text input will not be transferred over when you select “Message Memory technique” on a particular memo[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 90 021 KEY CW MEM3 022 KEY CW MEM4 023 KEY CW MEM5 Advice: Press the [SELECT] knob to toggle the Menu item display between “Menu Item Number & Group Name” and “Menu Function”. 3. Rotate the [CLAR/VFO-B] kn ob to set the selected CW Memory Register to “tyP2.” If you want to text me[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 91 3. Press the FH-2’ s [1] ~ [5] key whichever one you just recorded in. A “PLA Y” icon will appear in the display , and you will hear the results in the sidetone, but no RF energy will be transmitted. Note: Y ou may adjust the monitor level using the [MONI] knob. On-The-Air CW Message Pla[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 92 Item Number & Group Name” and “Menu Function”. 3. Rotate the [CLAR/VFO-B] kn ob to set the selected CW Memory Register to “tyP1.” If you want to text message entry on a ll memories, set all five Menu items (#019 ~ 023) to “tyP1.” 4. Press and hold in the [MENU] button fo r tw[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 93 will appear in the display , and you will hear the results in the sidetone, but no RF energy will be transmitted. Note: Y ou may adjust the monitor level using the [MONI] knob. On-The-Air CW Message Playback 1. Press the [BK-IN] button to enable tran smission. Either Full- or Semi-break-in wil[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 94 situations. However , using Menu item “ 056 F3E FM MIC,” you may set a different fixed value, or choose the “ur” option, which then lets you use the front panel [MIC GAIN] knob to set the microphone gain in the FM mode. Advice:  Y ou may change the tuning step of the microphone’s [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 95 receive mode. Advice:  The Repeater operation will be memorized in dependently on each VFO stack of the VFO-A and VFO-B.  The conventional repeater shift used on 29 MHz is 100 kHz, while on the 50 MHz band the shift may vary between 500 kHz an d 1.7 MHz (or more). T o program the proper [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 96 Quick Point: The FT -950’ s memory channels store the following data (not just the operating frequency):  VFO-A Frequency  VFO-A Mode  Clarifier status and its Offset Frequency  ANT status  IPO status  Roofing filter status and its Bandwidth  Attenuator status  Noise [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 97 QMB Channel Recall 1. Press the [QMB(RCL)] button. The curre nt QMB channel’s data will be shown on the frequency display field and the QMB memory channel number will be shown in the Multi-Display W indow . 2. Repeatedly pressing the [QMB(RCL )] button will toggle you through the QMB channel[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 98 channel number will appear in the Multi-Panel W indow . Advice: If you can not enter the “Memor y mode”, check to be sure that the [VFO-B(RX)] Indicator/Switch is illuminate d green. If it is, press the [VFO-A(RX)] Indicator/Switch to make the [VFO-B(RX)] Indicator/Switch go out, then pres[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 99 2. Press the [A>M] button. The data stored in the currently-selected memory channel will be displayed in the frequency field. 3. Rotate the [CLAR/VFO-B] knob to sele ct the memory channel that you would like to erase. The memory channel number appears in the Multi-Panel W indow . 4. Press t[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 100 memory , Memory T une operation will not alte r the contents of the memory channel. 1. Press the [V/M] button to recall any memory channel. Advice: If you can not enter the “Memor y mode”, check to be sure that the [VFO-B(RX)] Indicator/Switch is illuminate d green. If it is, press the [V[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 101 3. Rotate the [SUB VFO-B] knob to set this Menu item to “On” (the default setting is “OFF”). 4. Press and hold in the [MENU] button fo r two seconds to save the new setting and exit. Operation will now be restricted to the six Memory Groups. T o cancel Memory Group operation, repeat s[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 102 Operation on Alaska Emergency Freq uency: 5167.5 kHz (U.S. V ersion Only) Section 97.401(d) of the regulations governing amateur radio in the United States permit emergency amateur communications on the spot frequency of 5167.5 kHz by stations in (or within 92.6 km of) the state of Alaska. Th[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 103 VFO and Memory Scanning Y ou may scan wither the VFO or the memories of the FT -950, and the radio will halt the scan on any station with a signal strong enough to open the receiver ’ s squelch. VFO Scanning 1. Set the VFO-A to the frequency on which you would like to begin scanning. 2. Rot[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 104 scanning in the specified direction. Advice:  If the scanner halts on an incoming signal, the decimal point between the “MHz” and “kHz” digits of the frequency display will blink.  If the incoming signal disappears, sca nning will resume in about five seconds. 4. T o cancel the [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 105 2. Press the [V/M] button to enter the “Memory” mode. Advice: If you can not enter the “Memor y” mode, check to be sure that the [VFO-B(RX)] Indicator/Switch is illuminate d green. If it is, press the [VFO-A(RX)] Indicator/Switch to make the [VFO-B(RX)] Indicator/Switch go out, then p[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 106 Packet Setup (Including Subcarrier Frequency) Before operation can commence, some basic se tup procedures must be performed, using the Menu, to configure your radio for the data mode to be used. Menu Item A vailable V alues 050 DA T A DT GAIN 0 ~ 100 051 DA T A OUT L VL 0 ~ 100 052 DA T A VOX[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 107 Note: If you anticipate making data transm issions of longer than a few minutes, we recommend that reduce the transmitter powe r to 1/3 ~ 1/2 of its normal maximum via the Menu item “1 1 1 TGEN TX PWR”. Quick Point: P ACKET Jack Specifications DA T A IN (pin 1) Nominal Input Level: 50 mVp[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 108 recommend that reduce the transmitter powe r to 1/3 ~ 1/2 of its normal maximum via the Menu item “1 1 1 TGEN TX PWR”. Advice:  If you need to adjust the output level from the “DA T A OUT” pin (pin 5) of the RTTY/PKT jack on the rear panel of the transceiver , please use Menu item [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 109 Menu Mode The Menu system of the FT -950 provides extens ive customization capability , so you can set up your transceiver just the way yo u want to operate it. The Menu items are grouped by general utilization category , an d are numbered from “001 AGC FST DL Y” to “1 18 TGEN EMRGNCY?[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 11 0 003 AGC SL W DL Y Function: Sets the delay time for the AGC SLOW mode. A vailable V alues: 20 ~ 4000 msec (20 msec/step) Default Setting: 3000 msec DISPLA Y Group 004 DISP COLOR Function: Selects the Display color when the optional Data Management Unit (DMU-2000) is connected. A vailable V a[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 111 A vailable V alues: OFF/0.5/1.0/2.0 sec Default Setting: OFF 008 DISP PKH PO Function: Selects the peak hold time of the PO meter . A vailable V alues: OFF/0.5/1.0/2.0 sec Default Setting: OFF 009 DISP PKH ALC Function: Selects the peak hold time of the ALC meter . A vailable V alues: OFF/0.5[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 11 2 connected. A vailable V alues: On/OFF Default Setting: On Advice: If the optional DMU-2000 Data Ma nagement Unit is not connected, this adjustment has no effect. DVS Group 014 DUS RX L VL Function: Sets the audio output level from the optional V oice Memory Unit. A vailable V alues: 0 ~ 100 [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 11 3 A2nO: Abbreviates to “A” for “One,” “N” for “Nine,” and “O” for “Zero.” A2nt: Abbreviates to “A” for “One,” “N” for “Nine,” and “T” for “Zero.” 12nO: Abbreviates to “N” for “Nine,” and “O” for “Zero.” 12nt: Abbreviates to “N?[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 11 4 022 KEY CW MEM4 Function: Permits entry of the CW message for message register 4. A vailable V alues: tyP1/tyP2 Default Setting: tyP2 tyP1: Y o u may enter the CW message from the Main T uning Dial knob and [CLAR/VFO-B] knob. tyP2: Y ou may enter the CW message from the CW keyer . 023 KEY CW[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 11 5 027 GENE CA T TOT Function: Sets the Ti me-Out Timer count down time for a CA T command input. A vailable V alues: 10/100/1000/3000 msec Default Setting: 10 msec The T ime-Out T imer shuts off the CA T data input after the continuous transmission of the programmed time. 028 GENE CA T RTS Fun[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 11 6 bands. On the 10/14 MHz bands, “FIN E” [SELECT(µ-TUNE)] knob steps will be used (1 step/click). StP2: Activates the µ-TUNE system usin g “FINE” steps of the [SELECT(µ-TUNE)] knob (1 step/click) on the 14 MHz and lower amateur bands. Advice: If an optional RF µT uning Kit is no t [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 11 7 Default Setting: Ur When this menu is set to “Ur”, you may adjust the microphone gain using the front panel’ s [MIC GAIN] knob. MODE-CW Group 037 A1A F-TYPE Function: Selects the desired keyer operatio n mode for the device connected to the front panel’ s KEY jack. A vailable V alues[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 11 8 ACS: Iambic keyer with ACS (Auto mat ic Character Spacing) enabled. 040 A1A R-REV Function: Selects the keyer paddle’ s wiring configuration for the KEY jack on the rear panel. A vailable V alues: nor/rEV Default Setting: nor nor: Tip = Dot, Ring = Dash, Shaft = Ground rEV : T ip = Dash, R[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 11 9 FuLL: The transceiver will operate in the full break-in (QSK) mode. 044 A1A DELA Y Function: Adjusts the Keying Delay (rec eiver recovery) time on the CW mode. A vailable V alues: 30 ~ 3000 msec Default Setting: 300 msec 045 A1A PITCH Function: Adjusts your pr eferred CW tone pitch. A vailab[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 120 Default Setting: 15 msec MODE-DA T Group 050 DA T A DT GAIN Function: Sets the data input level fr om the TNC to the AFSK modulator . A vailable V alues: 0 ~ 100 Default Setting: 50 051 DA T A OUT L VL Function: Sets the AFSK data output level at the output port (pin ?) of the RTTY/PKT jack. [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 121 MODE-FM Group 056 F3E MIC Function: Sets the microphone gain for the FM mode. A vailable V alues: Ur/0 ~ 100 Default Setting: 50 When this menu is set to “Ur ,” you may adjust the microphone gain using the front panel’ s [MIC GAIN] knob. 057 F3E 28 RPT Function: Sets the magnitude of th[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 122 062 RTTY SHIFT Function: Selects the frequency shift for RTTY (AFSK) operation. A vailable V alues:170/200/425/850 Hz Default Setting: 170 Hz 063 RTTY TONE Function: Selects the Mark tone for RTTY operation. A vailable V alues: 1275/2125 Hz Default Setting: 2125 Hz MODE-SSB Group 064 A3J TX B[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 123 RX GENE Group 067 RGEN NB L VL Function: Adjusts the noise blanking level of the IF Noise Blanker . A vailable V alues: 0 ~ 100 Default Setting: 50 068 RGEN CNTR L V Function: Adjusts the parametric equa lizer gain of the Contour filter . A vailable V alues: –40 ~ +20 dB Default Setting: ?[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 124 Management Unit is not connected. 073 SCP 1.8 FIX Function: Selects the scan start frequenc y of the FIX mode Spectrum Scope while monitoring on the 160 m amateur band. A vailable V alues: 1.700 ~ 1.999 MHz (1 kHz steps) Default Setting: 1.800 MHz 074 SCP 3.5 FIX Function: Selects the scan st[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 125 Default Setting: (1)4.000 MHz 079 SCP 18.0 FIX Function: Selects the scan start frequenc y of the FIX mode Spectrum Scope while monitoring on the 17 m amateur band. A vailable V alues: (1)8.000 ~ (1)8.199 MHz (1 kHz steps) Default Setting: (1)8.068 MHz 080 SCP 21.0 FIX Function: Selects the s[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 126 AM modes. A vailable V alues: 1 or 10 Hz Default Setting: 10 Hz 085 TUN CW FINE Function: Enabling/disabling of the “Fine” tuning speed in the CW mode. A vailable V alues: EnA/diS (ENABLE/DISABLE) Default Setting: diS (DISABLE) EnA (ENABLE): T uning in 1 Hz steps on the CW mode. diS (DISA[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 127 Function: Programs a band to be skipped while selecting bands using the [CLAR/ VFO-B] knob. T o program the band to be skipped, rotate the [CLAR/VFO-B] knob to recall the band to be skipped while selectin g bands via the [CLAR/VFO-B] knob, then press the [ENT] button to change this setting to[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 128 Y ou may adjust the equalizer gain and Q-fact or at this selected audio frequency via menu items “095 T AUD EQ2 L VL” and “096 EQ2 BW .” 095 T AUD EQ2 L VL Function: Adjusts the equalizer gain of th e middle range of the parametric microp hone equalizer . A vailable V alues: –10 ~ +[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 129 100 T AUD PE1 FRQ Function: Selects the center frequency of the lower range for the parametric microphone equalizer when the speech processor is activated. A vailable V alues: OFF/100 ~ 700 Hz (100 Hz/step) Default Setting: OFF OFF: The equalizer gain and Q-factor are set to factory defaults [...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 130 A vailable V alues: –10 ~ +10 Default Setting: +5 105 T AUD PE2 BW Function: Adjusts the Q-factor of the mi ddl e range of the parametric microphone equalizer when the speech processor is activated. A vailable V alues: 1 ~ 10 Default Setting: 10 106 T AUD PE3 FRQ Function: Selects the cente[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 131 1 10 TGEN EXT TUN Function: Enable/disable the optional FC-40 Antenna T uner . A vailable V alues: EnA/diS (ENABLE/DISABLE) Default Setting: diS (DISABLE) EnA (ENABLE): The [TUNE] button will activate the optional FC-40 Antenna T uner . diS (DISABLE): The [TUNE] button will acti vate the inte[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 132 A vailable V alues: 0 ~ 100 Default Setting: 50 1 16 TGEN VOX DL Y Function: Adjusts the “VOX” Delay (receiver recovery) time on the SSB/AM/FM modes. A vailable V alues: 30 ~ 3000 msec Default Setting: 300 msec 1 17 TGEN ANTIVOX Function: Adjusts the Anti-VOX T rip Gain wh ich is the leve[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 133 preventing IMD and blocking. Installation Assemble the RF µT uning Unit according to the “RF µT uning Kit Installation Manual” supplied from the RF µT uning Kit. Interconnections to FT -950 Connect each cable (supplied from the RF µT uning Kit) between the RF µT uning Unit and the FT[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 134 Specifications General Rx Frequency Range: 30 kHz – 56 MHz (operating) 160 - 6 m (specified performance, Amateur bands only) Tx Frequency Ranges: 160 - 6 m (Amateur bands only) Frequency Stability: ±0.5 ppm (after 1 minute @77 °F [25 ° C]) ±1.0 ppm (after 1 minute @14 °F ~ +122 °F [?[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 135 SSB Carrier Suppression: At le ast 60 dB below peak output Undesired Sideband Suppression: At least 60 dB below peak output 3rd-order IMD: –31 dB @14 MHz 100 watts PEP Bandwidth: 3 kHz (LSB/USB), 500 Hz (CW), 6 kHz (AM), 16 kHz (FM) Audio Response (SSB): Not more than –6 dB from 300 to 27[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 136 60 dB or better (6m Amateur band) Maximum Audio Output: 2.5 W into 4 Ω with 10% THD Audio Output Impedance: 4 to 8 Ω (4 Ω : nominal) Conducted Radiation: Less than 4 nW Specifications are subject to change, in the interest of technical improvement, without notice or obligation, and are gua[...]

FT -950 Operating Manual V ertex S tandard Co., Ltd. 137 This equipment has been tested and found to comply with the limits for a Class B digita l device, pursuant to Part 15 of the FCC Rules. These lim its are designed to provide reasonable protection against harmf ul interference in a residential installation. This equipment generates, uses and c[...]