Yaesu Musen 20651X50 HF/50 MHz Amateur Transceiver User Manual FT 891 User Manual 1
Yaesu Musen Co., Ltd. HF/50 MHz Amateur Transceiver FT 891 User Manual 1
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![3FT-891 Operating ManualIntroductionThe FT-891 is a rugged, innovative multiband, multimode mobile/portable transceiver for the amateur radio MF/HF/50 MHz bands. Providing coverage of the 160 - 6 meter bands, the FT-891 includes operation on the SSB, CW, AM and FM modes, yielding the most comprehensive performance package available for mobile and field operation.Engineered for high performance, the FT-891 provides 100 watts power output on the 160 through 6 meter bands.The multi-function Liquid-Crystal Display includes attractive backlighting.The display includes bar-graph indication of power output, ALC voltage, SWR, modulation level, and/or signal strength. Also included are a number of operating status icons, as well as the function displays for the three operating function keys ([A], [B], and [C]).Among the advanced features of the FT-891 are many incorporated only in large bases-tation transceivers. These include Dual VFOs; Split-Frequency operation; Digital Signal Processing (Bandpass Filtering, Noise Reduction, Auto-Notch, and Microphone Equaliz-er);IF Shift; Clarifier (“R.I.T.”); IF Noise Blanker; AGC Fast/Middle/Slow/Auto selection; RF Gain and Squelch control; IPO (Intercept Point Optimization) and a receiver front-end Attenuator; AM Broadcast reception; VOX; Built-in Electronic Keyer with Memories and a Beacon mode; Adjustable CW Pitch; Automatic FM Repeater Shift (ARS); Built-in CTCSS Encoder/Decoders;Spectrum Scope; 200 Memories plus Home Channels and Band-limiting Memories;Alpha-Numeric Labeling of Memories; Automatic Power-Off (APO) and Time-Out Timer (TOT) functions; Computer Interface capability; and Cloning capability.We urge you to read this manual in its entirety, so as to gain a full understanding of the amazing capability of the exciting new FT-891 Transceiver.Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-3.png)
![10 FT-891 Operating ManualFront Panel Controls & Switches①②③ ④ ⑥ ⑦ ⑧ ⑩⑤⑪ ⑫ ⑬ ⑭ ⑮ ⑯⑨ RF/SQL knobThis (outer) SQL/RF knob adjusts the gain of the receiver’s RF and IF stages. Using Menu Mode “No 05-05 [RF/SQL VR]”, this control may be changed to function as a Squelch control. MULTI knobThis detented rotary switch is used for function selection for the [A], [B], [C] keys of the transceiver.AF KnobThe (inner) VOL knob adjusts the receiver audio volume level presented to the internal or external speaker. Clockwise rotation increases the volume level.MODE keyPressing either of this key momentarily will change the operating mode. The selections available are:à LSB à CWL (CW LSB) à R-L (RTTY LSB) àà P-L (PACKET LSB) à AM à LSB àRepeated presses of this key steps through the available selections. Pressing and holding this key will toggle to the alternate mode. For example, In the LSB or USB modes, a long press of this key toggles between “LSB” and “USB” mode.RC/ST keyPress and hold this key for more than one second to write the frequency and data currently set for VFO-A onto the quick memory bank (QMB)m 5 channels are available for QMB memories. Press the button briefly to recall the data written onto the quick memory banks (QMB) one by one.[VuM] keyPressing and holding this key for one second (until the double beep) copies the current operating data into the currently selected memory channel, over-writing any previous Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-10.png)
![11Basic OperationFT-891 Operating Manualdata stored there.Press this button briefly to display the memory check function screen, where the data saved in a memory channel may be reviewed.Press this button again, to close the memory list screen.[V/M] keyThis key toggles frequency control between VFO and the memory system.m Pressing this key alternately recalls the VFO frequency data and the frequency data saved in a memory channel by turns.[A/B] keyPressing this button momentarily, exchanges the frequency and memory channel data, of VFO-A and VFO-B.[DOWN]/[UP] keyPressing either of these keys momentarily will cause the frequency to be moved up or down by one frequency band. The selections available are:..... 1.0 MHz ó 1.8 MHz ó 3.5 MHz ó 5.0 MHz ó 7.0 MHz ó 10 MHz ó 14 MHz ó 15 MHz ó 18 MHz ó 21 MHz ó 24 MHz ó 28 MHz ó 50 MHz ó 1.0 MHz .....[Power/Lock] keyPress and hold in the Power key for one second to turn to the transceiver on or off.Briefly pressing the key while the transceiver is turned ON engages or releases the key lock.TX/BUSY IndicatorThis indicator glows green when the squelch opens, and turns red during transmit.[F] keyPress and hold in this key for one second to activate the “Menu” mode.Multi Function keysThese three keys select many of the most important operating features of the trans-ceiver.[CLAR] keyDuring reception, press this key, then press the MULTI knob then rotate the MULTI knob to adjust the VFO RX clarifier offset value.m The clarifier offset value (frequency) can be re-stored to “0 (zero)” by pressing the [CLAR] key for more than 1 second.LCD DisplayThe LCD (Liquid Crystal Display) provides indication of the operating frequency and other aspects of transceiver status.MAIN DIALThis is the main tuning dial for the transceiver. It is used both for frequency tuning as well as “Menu” setting in the transceiver.Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-11.png)
![14 FT-891 Operating ManualBasic OperationTurning the Transceiver ON and OFF1. To turn the transceiver ON, press and hold the PWR/LOCK key for one second.2. To turn the transceiver OFF, again press and hold the PWR/LOCK key for one second.Operating Band SelectionThis transceiver covers an incredibly wide frequency range, over which a number of dif-ferent operating modes are used. Therefore, this transceiver’s frequency coverage has been divided into different operating bands, each of with has its own preset frequency steps and operating modes. You can change the channel steps and operating mode once you get started,of course, per the next section.To change the frequency band, press either the [DOWN] or [UP] key to move to the next lower or higher operating band, respectively.Mode SelectionPressing either of the [MODE] key momentarily will change the operating mode. The selections available are:à LSB à CWL (CW LSB) à R-L (RTTY LSB) àà P-L (PACKET LSB) à AM à LSB àRepeated presses of the [MODE] key steps through the available selections. Pressing and holding the [MODE] key will toggle to the alternate mode. For example, In the LSB or USB modes, a long press of the [MODE] key toggles between “LSB” and “USB” mode.Adjusting the Audio Volume LevelRotate the AF knob to set a comfortable listen-ing level.Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-14.png)
![15Basic OperationFT-891 Operating ManualAdjusting the RF Gain and SquelchThe RF/SQL Gain control is configured differently, depending on the country to which the FT-891 has been exported. In the U.S. version, the default function of this control is “RF Gain.” The configuration of the RF/SQL Gain control is set via Menu Mode “No 05-05 [RF/SQL VR]”. If your transceiver is configured for “RF Gain” use, rotating this control fully clockwise in the SSB/CW modes will provide best sensitivity. To reduce the receiver’s RF Gain somewhat, rotate this control counter-clockwise slightly. You will observe an increasing number of bars on the S-meter as you rotate the RF Gain control counter-clockwise; this indicates increasing AGC voltage, which is causing the front-end gain to be reduced. In the FM mode, with “RF Gain” selected, the FT-891 goes into an “Auto Squelch” mode, with the Squelch level being preset at the factory. If this control is configured for “SQL” operation, the FT-891’s RF Gain will be set for maximum sensitivity in all modes, and the RF/SQL Gain control will function solely as a Squelch control. In this case, rotate the RF/SQL Gain control to the point where the back-ground noise is just silenced; this will provide the best sensitivity to weak signals, while keeping the receiver quiet when no signal is received. The LED just left side the display will glow Green when the squelch is opened by an incoming signal or noise.Setting the Operating FrequencyRotate the DIAL knob to set the frequency. Clockwise rotation of the DIAL increases the operating frequency.Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-15.png)
![16Basic OperationFT-891 Operating ManualOperation on 60-Meter (5 MHz) Band (U.S. Version Only)The recently-released 60-meter band is covered, in the FT-891, by fixed memory chan-nels. These channels are set to USB or CW, and they appear between the “last” PMS channel (“P-9U”) and the first “regular” memory channel (01ch):1. Press the [V/M] key once to enter the “Mem-ory” mode.2. Rotate the MULTI knob, as needed, un-til Multi Function Row “F-13 [MCH] [GRP] [MLIST]” appears on the display.3. Press the [A](MCH) key, then rotate the MULTI knob.4. The memory channel number will appear on the display to signify that rotation of the MULTI knob will allow selection of the memory channel.5. Memory channels (“5-01” through “5-10”) are preprogrammed, at the factory, with the permitted frequencies in the 5 MHz band, and the USB or CW mode is automatically selected on these channels.6. To exit from 60-meter (5 MHz) operation and return to the VFO mode, just press the [V/M] key.ChannelNumber Frequency5-01 5.332000 MHz (SSB)5-02 5.348000 MHz (SSB)5-03 5.358500 MHz (SSB)5-04 5.373000 MHz (SSB)5-05 5.405000 MHz (SSB)5-06 5.332000 MHz (CW)5-07 5.348000 MHz (CW)5-08 5.358500 MHz (CW)5-09 5.373000 MHz (CW)5-10 5.405000 MHz (CW)Lock FeatureTo activate the key-lock feature, press the [Power/Lock] key. The “LOCK” icon will appear on the LCD.To cancel key-lock, press the [Power/Lock] key again.Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-16.png)
![17Basic OperationFT-891 Operating ManualClarifier (Receiver Incremental Tuning)The [CLAR] key and MULTI knob are used to offset the receive frequency, the transmit frequency, or both, from their settings on the VFO-A frequency. Four small numbers on the Display show the current Clarifier offset. The Clarifier controls on the FT-891 are designed to allow setting a preset offset (up to ±9.99 kHz) without actually re-tuning, and then to activate it via the Clarifier [CLAR] key. This feature is ideal for following a drifting station, or for setting the small frequency offsets sometimes utilized in DX “Split” work.Here is the technique for utilizing the Clarifier:1. Press the [CLAR] key. The programmed off-set will be applied to the receive frequency.2. Press the MULTI knob, then rotation of the MULTI knob will allow you to modify your initial offset on the fly. Offsets of up to ±9.99 kHz may be set using the Clarifier.3. To cancel Clarifier operation, press the [CLAR] key.Note: Turning the Clarifier off merely cancels the application of the programmed offset from the receive and/or the transmit frequencies. To clear the Clarifier offset, and reset it to “zero,” press and hold the [CLAR] key.Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-17.png)
![18 FT-891 Operating ManualAdvanced OperationIF SHIFTThe receiver’s IF SHIFT feature is an effective interference-reduction tool, which allows you to shift the passband response higher or lower without changing the pitch of the incoming signal.1. Rotate the MULTI knob, as needed, until Multi Function Row “F-05 [SHIFT] [WIDTH] [NOTCH]” appears on the display.2. Press the [A](SHIFT) key to activate the IF SHIFT feature.3. Rotate the MULTI knob, as needed, to re-duce or eliminate the interference.4. To turn the IF SHIFT feature off, press the [F] key. The last setting of the IF SHIFT control will be retained until you change it again.AGC (Automatic Gain Control)The receiver recovery time constant of the AGC system may be modified to match your operating needs.1. Rotate the MULTI knob, as needed, un-til Multi Function Row “F-04 [NB] [AGC] [MONI]” appears on the display.2. Press the [B](AGC) key to toggle the AGC recovery time constant among the following selections:AUTO à FAST à MID à SLOW à AUTO à .....Where “AUTO” represents “FAST” on CW and DIG (AFSK), and “SLOW” on the voice modes. If you disable the AGC by press and hold the [B](AGC) key, the S-meter (which monitors AGC voltage) will cease to function. Depending on the setting of the RF Gain control, incoming signals will probably be distorted if the AGC is turned off.Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-18.png)
![19Advanced OperationFT-891 Operating ManualNoise BlankerThe IF Noise Blanker may be useful in reducing or eliminating some types of impulse noise, especially noise generated by automotive ignition systems.1. Rotate the MULTI knob, as needed, un-til Multi Function Row “F-04 [NB] [AGC] [MONI]” appears on the display.2. Press the [A](NB) key to activate the Noise Blanker. The “N” icon will appear on the dis-play, indicating that the Noise Blanker is now on.3. To adjust the blanking level, rotate the MULTI knob to set a higher or lower blanking level (on a scale of 0 to 10).4. Press the [A](NB) key again to turn the Noise Blanker off.Note: During very crowded band conditions, you may wish to turn the Noise Blanker off, as its use will degrade the strong-signal-handling capability of the receiver somewhat.IPO (Intercept Point Optimization)The IPO feature bypasses the receiver RF preamplifier, thereby eliminating the preamp’s gain.1. Rotate the MULTI knob, as needed, until Multi Function Row “F-03 [ATT] [IPO] [NAR]” appears on the display.2. Press the [B](IPO) key repeatedly, to set the desired characteristic of the receiver front end, ac-cording to the chart below.AMP1: Amplifie the incoming signals, using a low distortion RF preamplifie.IPO: Bypasses the RF preamplifie, yielding direct feed to the firs mixer.3. The selected receiver RF preamplifie will be indicated in the IPO column of the Key Function Display on the display.Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-19.png)
![20Advanced OperationFT-891 Operating ManualATT (Attenuator)The Attenuator will reduce all signals (and noise) by 10 dB, and it may be used to make reception more pleasant under extremely noisy conditions.1. Rotate the MULTI knob, as needed, until Multi Function Row “F-03 [ATT] [IPO] [NAR]” appears on the display.2. Press the [A](ATT) key. The “ATT” indicator will appear in the display.3. To restore full signal strength through the Attenuator circuit, press the [A](ATT) key to return the ATT display to the “OFF” position.DSP Noise Reduction (DNR)The Noise Reduction feature of the DSP system may be used to enhance signal-to-noise ratio on weak signals.1. Rotate the MULTI knob, as needed, un-til Multi Function Row “F-06 [DNR] [MOX] [CONT]”.2. Press the [A](DNR) key to activate the DSP Noise Reduction feature.3. Rotate the MULTI knob to find the point where best signal-to-noise ratio is obtained under the current noise conditions.4. Press the [F] key to save the new setting and exit to normal operation.5. To turn off the DSP Noise Reduction feature, press the [A](DNR) key again.6. If noise is present at a level which causes indication on the S-meter, the performance of the Noise Reduction filter may be enhanced by rotating the SQL/RF (RF Gain) con-trol in a counter-clockwise direction so as to set the (fixed) S-meter reading at the same level as the noise peaks. This adjustment raises the AGC threshold of the receiver.Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-20.png)
![21Advanced OperationFT-891 Operating ManualNotch FilterThe DSP system’s Notch Filter may be helpful in removing one or more offending carrier or heterodyne signals from the audio passband.1. Rotate the MULTI knob, as needed, until Multi Function Row “F-05 [SHIFT] [WIDTH] [NOTCH]”.2. Press the [C](NOTCH) key to activate the Notch Filter. The “” icon will appear at the left side of the “DNF” indication, and the “” nota-tion will appear at the top on the display. You will notice that the audio level of the carrier signal is now being reduced.3. Rotate the MULTI knob to adjust the “null” position of the Notch filter.4. Press the [C](DNF) key once more to turn the Notch Filter off.Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-21.png)
![22 FT-891 Operating ManualMemory OperationQMB (Quick Memory Bank) ChannelsThe “Quick Memory” Bank provides one-touch access to frequencies you want to store and recall in a hurry. You may store a “QMB” channel into a “regular” memory later, if you like;use of the “regular” memories will be described later.QMB Channel Storage1. Tune in the desired frequency and set the operating mode and bandwidth. If this is an FM channel, set up any required CTCSS/DCS and repeater shift configurations.2. Press and hold in the [RC/ST] key until two “beeps” are heard. The second beep (heard one second after the initial beep) provides audible confirmation that the data has been stored into the QMB memory.QMB Channel Recall1. Press the [RC/ST] key momentarily to recall the QMB memory. “QMB” will appear in the upper of the display.2. Press the [V/M] key to return to the previous frequency (either a VFO frequency or a Memory channel).Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-22.png)
![23Memory OperationFT-891 Operating ManualMemory Operation on “Regular” Memory ChannelsMost Memory operation will be conducted in the “regular” memory registers. There are 99 memory channels available for storage and recall of important frequencies.Normal Memory Storage1. In the VFO mode, select the desired frequency, repeater shift, CTCSS/DCS tone, and TX power level.2. Press the [VuM] key momentarily to enter the “Memory Check” mode, which is used to find an unused memory channel. Rotate the MULTI knob to select the channel number on which you wish to store the current fre-quency data.3. If you just want to program in the frequency data, press and hold in the [VuM] key for one second until you hear two beeps, a second apart; the second beep confirms that the frequency information was successfully stored.Memory Channel Recall1. Press the [V/M] key once to enter the “Mem-ory” mode.2. Rotate the MULTI knob, as needed, un-til Multi Function Row “F-13 [MCH] [GRP] [MLIST]” appears on the display.3. Press the [A](MCH) key, then rotate the MULTI knob.4. Press the [A](MCH) key and then rotate the MULTI knob to select the desired memory channel.Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-23.png)
![24 FT-891 Operating ManualMiscellaneous SettingsDisplay ContrastThe LCD’s contrast may be adjusted using the Menu Mode, as well.1. Press and hold in the [F] key for one second to activate the Menu mode.2. Rotate the MULTI knob to select Menu Mode Menu Mode “No 02-03 [LCD CONTRAST]”.3. Press the MULTI knob, and then rotate the MULTI knob to adjust the contrast. As you make the adjustment, you will be able to see the effects of your changes.4. When you have completed the adjustment, press the [F] key exit the Menu mode.Display DimmerThe LCD illumination level may also be adjusted using the Menu Mode.1. Press and hold in the [F] key for one second to activate the Menu mode.2. Rotate the MULTI knob to select Menu Mode Menu Mode “No 02-05 [DIMMER LCD]”.3. Press the MULTI knob, and then rotate the MULTI knob to adjust the display illumination for a comfortable brightness level. As you make the adjustment, you will be able to see the effects of your changes.4. When you have completed the adjustment, press the [F] key exit the Menu mode.Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-24.png)
![25FT-891 Operating ManualReset ProcedureIn some instances of erratic or unpredictable operation, the cause may be corruption of data in the microprocessor (due to static electricity, etc.). If this happens, resetting the microprocessor may restore normal operation. Note that all memories will be erased if you do a complete microprocessor reset, as described below.Microprocessor ResettingTo clear all memories and other settings to factory defaults:1. Turn the radio OFF.2. Press and hold the [F] and [CLAR] keys while turning the radio ON. Once the trans-ceiver comes on, release the buttons.Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-25.png)
![26 FT-891 Operating ManualSetup (Menu) ModeThe FT-891 Setup (Menu) mode, already described in parts of many previous chapters, is easy to activate and setup. The Menus may be used to configure many of transceiver parameters, some of which have not been detailed previously. Use the following procedure to activate the Setup (Menu) mode:1. Press and hold in the [F] key for one second to activate the Menu mode.2. Rotate the MULTI knob to select the Menu Item to be adjusted.3. Press the MULTI knob momentarily to en-able adjustment of the selected Menu item, and then rotate the MULTI knob to perform the actual adjustment.4. After completing the selection and adjust-ment, press the [F] key to exit the Setup menu and resume normal operation.Menu / Item Available Values DefaultAGC01-01 AGC FAST DELAY 20 - 4000 msec 30001-02 AGC MID DELAY 20 - 4000 msec 70001-03 AGC SLOW DELAY 20 - 4000 msec 3000DISPLAY02-01 MY CALL --- FT-89102-02 MY CALL INDI 0 - 5 1sec02-03 LCD CONTRAST 1 - 15 802-04 DIMMER BACKLIT 1 - 4 802-05 DIMMER LCD 1 - 15 802-06 DIMMER TX/BUSY 1 - 4 802-07 PEAK HOLD OFF/0.5/1.0/2.0 sec OFF02-08 ZIN LED ENABLE/DISABLE ENABLEDVS03-01 DVS RX OUT LEVEL 0 - 100 5003-02 DVS TX OUT LEVEL 0 - 100 50KEYER04-01 KEYER TYPE OFF/BUG/ELEKEY-A/ELEKEY-B/ELEKEY-Y/ACSELEKEY-B04-02 KEYER DOT/DASH NOR/REV NOR04-03 CW WEIGHT 2.5 - 4.5 3.004-04 BEACON INTERVAL OFF/1 - 690 sec OFF04-05 NUMBER STYLE 1290/AUNO/AUNT/A2NO/A2NT/12NO/12NT129004-06 CONTEST NUMBER 0 - 9999 104-07 CW MEMORY 1 TEXT/MESSAGE TEXT04-08 CW MEMORY 2 TEXT/MESSAGE TEXT04-09 CW MEMORY 3 TEXT/MESSAGE TEXT04-10 CW MEMORY 4 TEXT/MESSAGE TEXT04-11 CW MEMORY 5 TEXT/MESSAGE TEXTApplication for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-26.png)
![30 FT-891 Operating ManualSpecificationsGeneralFrequency Range: Tx 1.8 - 54 MHz (Amateur bands only) Rx 0.03 - 55.999995 MHzChannel Step: 2/5//10 Hz (SSB, CW) 10/100 Hz (AM, FM)Frequency Stability: ±0.5 ppm [-4 °F to +140 °F (-20 °C to +50 °C)]Modes of Emission: A1A (CW), A3E (AM), J3E (LSB, USB), F3E (FM)Antenna Impedance: 50 Ohms, unbalancedSupply voltage: 13.8 V DC ±15%, negative groundCurrent Consumption (typical): Rx: 2.0 A (signal present) Tx: 23 AOperating Temperature Range: -14° F to +122° F (-10° C to +50° C)Case Size (WxHxD): 6.1” x 2.0” x 8.6” (155 x 52 x 218 mm) (w/o knobs)Weight (Approx.): 4.18 lb (1.9 kg)TransmitterOutput Power: 100 WModulation Type: J3E (SSB): Balanced, A3E (AM): Low-Level, F3E (FM): Variable ReactanceMaximum Deviation: ±5 kHz (Wide) ±2.5 kHz (Narrow)Spurious Radiation: Better than -50 dB (1.8 MHz - 30 MHz Amateur bands) Better than -63 dB (50 MHz Amateur bands)Microphone Impedance: 600 Ohms (200 to 10 kOhms)ReceiverCircuit Type: SSB/CW/AM: Triple-conversion Superheterodyne FM: Double Conversion SuperheterodyneIfs: SSB/CW/AM: 69.450 MHz/450 kHz/24 kHz FM: 69.450 MHz/450 kHzSensitivity: SSB/CW (S/N 10 dB) 0.158μV(1.8-30MHz) 0.125μV(50-54MHz) AM (S/N 10 dB) 5μV(0.5-1.8MHz) 1.6μV(1.8-30MHz) 1.25μV(50-54MHz) FM (SINAD 12 dB) 0.35μV(29MHz,50-54MHz)Application for FCC / IC FCC ID: K6620651X50 / IC: 511B-20651X50](https://usermanual.wiki/Yaesu-Musen/20651X50.Users-Manaul/User-Guide-2941271-Page-30.png)
