Question about Icom Radio Communications

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My icom 706mk2g was working fine vhf/uhf rptrs, now no xmt or rcv no power output any mode ssb/cw as well as fm) no rcv tho ht can hear rptrs fine. tried 2 antennas and both work on other xcvrs. HF ok

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John Kopala

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The problem is a cold solder joint on a trimmer capacitor, C1022, on the 706MKIIG. Similar problem occurred with earlier models. The trimmer is on the Main Board about 5/8 inch to the right of the lower optional filter and 1 1/4 inch from the edge of the board. If you press down on the contacts of the trimmer one at a time you can find out which contact is causing the problem. Heating the contact with a sharp tipped soldering iron temporarily fixed the problem for me. I had to go back in and add a tiny bit of solder for a permanent fix. Go to for a picture of the part on the earlier MK1 model of the 706.

Posted on Oct 09, 2019


Brad Brown

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You need to be a very good technical person with electronics to work on these. The issue is most likely a PLL board issue. You need to be able to troubleshoot to the component level. The service manual appears to be

Posted on Jul 26, 2019


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SOURCE: insignia digital tv converter/indoor antenna no signal

I had the same problem but realized that when it said NO SIGNAL,,,,it just ment for that station,,,,,switch channels and they will start to come in,,,

Good Luck,

Posted on Feb 22, 2009

Cindy Wells

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Is the antenna the correct one for your environment? Do you have the antenna pointed at the stations you want to receive? Use or to get an idea of the location and likely channels you can receive at your location. Antennaweb assumes an outdoor antenna but is very conservative in the list of channels you can receive. (These may match the limits of the indoor antenna.) TVfool lists the stations and the appropriate antenna that will likely receive each station.

Tall trees and buildings will block the signal. Get the antenna as high as possible. Move the rabbit ears and UHF loop to maximize your signal strength. Then make sure the TV is set to use the OTA tuner (ATSC for digtal stations). (That may mean changing the source in the setup menu.)

Then scan for channels. Move your antenna or parts of it and rescan or edit the channel list. (For some TVs there is a weak signal setup option that will let you manually enter the station number (including sub-channel). Then it will provide the signal strength information as you move your antenna.)

I hope this helps. An amplifier may help you bring in weak stations with enough signal strength for the tv to see them.

Cindy Wells

Posted on Jan 20, 2011

John Cunningham

  • 6771 Answers

SOURCE: NO variable power on FM,or SSB, but variable works ok on AM

Look for open resistors near by, if the 2SC1969 shorted it has taken out one or two parts, also check for open foils on the printed circuit, beyond this a circuit diagram is needed.

Posted on Mar 24, 2012

SD Tech

SD Tech

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SOURCE: my ssb antenna was stollen, I NEEd another antenna for ICOM SSB model IC707, any antenna can I use to replace this, or where i can buy this antenna in the philippines

Check with ICOM on their web site or with HAM RADIO OUTLET, a large chain in North America---you may find a source that ships overseas or even one in Manilla.

Posted on Dec 14, 2012

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Why does the unit does not seam to work on SSB?

Since everything else works then is it USB or LSB or both? Did you check the power output when your in SSB and if there isn't any you can expect the drive transistors. Try putting the radio into the RTTY or CW mode and see if there is any power output when you key the mike PTT.

Good luck,

73's Marty

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1 Answer

My icom 706 mk2g transmits on VHF uhf but not on HF whats the possible problem

My icom 706mk2g does no give me hf power on the hf bands but on uhf is working wel.
On the s meter the last blok is turn on.
Reseiver is working wel.
Wat can it be?? Transistor Finals broken???
The two srfj?

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Icom 7410 won't transmit in SSB works in CW and RTTY

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How to adjust frequency on transmit??? Galaxy

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1 Answer

How to find hidden menu on yeasu 857d

Note: The following was taken from a web site as follows:

WARNING: changing these will reset all the memories.
I want to warn you do not change these values unless you are sure of what you are doing. To get them turn transceiver off. Press and hold the A,B,C keys; while holding them in, press and hold in the [PWR] switch for 1/2 second to turn the tranceiver On. Now let go of all keys. Attention, for menu NO-017. Input voltage 13.8V = 138 to calibre voltmeter.
Press F key to finish.
Function Setting in my radio
============================================================= Adjust-No Function Setting Mode Frequency ============================================================= NO-001 HF1-RXG 118 CW 1.800.00 NO-002 HF2-RXG 91 CW 7.068.19 NO-003 HF3-RXG 133 CW 21.225.13 NO-004 50M-RXG 106 CW 50.000.00 NO-005 VHF-RXG 77 CW 145.437.50 NO-006 UHF-RXG 103 CW 438.900.00 NO-007 SSB-S9 61 CW 21.225.13 NO-008 SSB-FS 54 CW 21.225.13 NO-009 FM-S1 68 FM 145.437.50 NO-010 FM-FS 99 FM 145.437.50 NO-011 DISC-L 50 FM 145.437.50 NO-012 DISC-H 79 FM 145.437.50 NO-013 FM-TH1 100 FM 145.437.50 NO-014 FM-TH2 100 FM 145.437.50 NO-015 FM-TI1 10 FM 145.437.50 NO-016 FM-TI2 10 FM 145.437.50 NO-017 VCC 138 FM 145.437.50 NO-018 HF1-IC 83 CW 1.800.00 NO-019 HF2-IC 80 CW 7.068.19 NO-020 HF3-IC 87 CW 21.225.13 NO-021 50M-IC 84 CW 50.000.00 NO-022 VHF-IC 72 CW 145.437.50 NO-023 UHF-IC 74 CW 438.900.00 NO-024 HF1-PO-MAX 165 CW 1.800.00 NO-025 HF1-PO-MID2 105 CW 1.800.00 NO-026 HF1-PO-MID1 31 CW 1.800.00 NO-027 HF1-PO-MIN 13 CW 1.800.00 NO-028 HF2-PO-MAX 159 CW 7.068.19 NO-029 HF2-PO-MID2 102 CW 7.068.19 NO-030 HF2-PO-MID1 29 CW 7.068.19 NO-031 HF2-PO-MIN 11 CW 7.068.19 NO-032 HF3-PO-MAX 158 CW 21.225.13 NO-033 HF3-PO-MID2 101 CW 21.225.13 NO-034 HF3-PO-MID1 29 CW 21.225.13 NO-035 HF3-PO-MIN 11 CW 21.225.13 NO-036 50M-PO-MAX 145 CW 50.000.00 NO-037 50M-PO-MID2 92 CW 50.000.00 NO-038 50M-PO-MID1 47 CW 50.000.00 NO-039 50M-PO-MIN 8 CW 50.000.00 NO-040 VHF-PO-MAX 87 CW 145.437.50 NO-041 VHF-PO-MID 43 CW 145.437.50 NO-042 VHF-PO-MIN 7 CW 145.437.50 NO-043 UHF-PO-MAX 112 CW 438.900.00 NO-044 UHF-PO-MIN 16 CW 438.900.00 NO-045 HF1-TXG 48 USB 1.800.00 NO-046 HF2-TXG 38 USB 7.068.19 NO-047 HF3-TXG 43 USB 21.225.13 NO-048 50M-TXG 40 USB 50.000.00 NO-049 VHF-TXG 47 USB 145.437.50 NO-050 UHF-TXG 49 USB 438.900.00 NO-051 ALC1-M 203 USB 21.225.13 NO-052 ALC-M 85 USB 21.225.13 NO-053 HF1-REV-ALC 61 CW 1.800.00 NO-054 HF2-REV-ALC 56 CW 7.068.19 NO-055 HF3-REV-ALC 50 CW 21.225.13 NO-056 50M-REV-ALC 47 CW 50.000.00 NO-057 VHF-REV-ALC 62 CW 145.437.50 NO-058 UHF-REV-ALC 57 CW 438.900.00 NO-059 CW-CAR-LEVEL 144 CW 21.225.13 NO-060 AM-CAR-LEVEL 125 AM 21.225.13 NO-061 DEV-W 216 FM 145.437.50 NO-062 DEV-N 110 FM 145.437.50 NO-063 MOD-MTR 200 FM 145.437.50 NO-064 DTMF-DEV 10 FM 145.437.50 NO-065 CTCSS-DEV 233 FM 145.437.50 NO-066 DCS-DEV 168 FM 145.437.50 NO-067 LSB-CAR-POINT -7 LSB 21.225.13 NO-068 USB-CAR-POINT +5 USB 21.225.13 NO-069 VSWR2 at 10W 17 CW 14.257.90 NO-070 VSWR3 at 10W 42 CW 14.257.90 NO-071 ATAS-TEST LSB 14.257.90 NO-072 AMTR-TEST LSB 14.257.90 NO-073 HTEMP-THRESHOLD 38 LSB 14.257.90 NO-074 FTEMP-THRESHOLD 102 LSB 14.257.90 Hope thia helped........kevin KC8IDG

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1 Answer

Excalibur works fine one day than not the next...

sounds like some loose solder joints. check power output with external meter to see if output is ok . i think youprobably have 2sc1969 finals init unles someone has changed them theyshould put about 25 watts if tuned correctly. also check the antenna a and antenna b switch to see if something has shorted across it inside cabinet.

Mar 16, 2008 | Radio Communications

1 Answer

What's the channel frequencies for a common 22 channel motorola 2 way vhf radio?

Not sure what you want.....VHF band ius approximatly 130mhz to 175 mhz..... in that VHF band there is a commercial VHF band aprox. 155 mhz to 175...... the amateur radio vhf band is aprox. 135 to 150mhz.


With amateur radio, any freq in that range can be used...... with commercial radio the FCC cangive a company any freq. in that range also.


If you are looking for FRS/GMRS frequencies they are UHF freqs not VHF.

So I'm not sure exactly what you want......sounds like you might want to program in FRS freqs into an Icom amateur radio. If thats  the case you will need an Icom that will do UHF freqs.

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