Do a reset on radio first before finding a fault that may not exist. VFO knob is removed by turning radio upside down, look at shuffle jog, there is a slot in it. Use small Allen Key, about 1.5mm or 2mm and there is grubscrew in main knob.
On Tue, 22 Aug 2023 at 13:55, Jaime Eloy < cu3ak@...> wrote:
OK! TNX for answer.
How do I remove the front knob of the radio? I need to clean the board.
73
----- Mensagem de Andrew Lenton < a@...> --------- Data: Tue, 22 Aug 2023 13:26:31 +0100
De: Andrew Lenton < a@...> Assunto: Re: [YaesuFT847] No S meter reading
Hi S meter is derived from the agc level, do a place to start
Andrew on beach in Cornwall
Get
On 22 Aug 2023, at 13:00, Jaime Eloy < cu3ak@...> wrote:
My FT847 do not have any s meter reading. Audio seems ok as tx also.
Where to look pse for this issue?
73
CU3AK
Eloy
----- Fim da mensagem de Andrew Lenton < a@...> -----
|
OK! TNX for answer.
How do I remove the front knob of the radio? I need to clean the board.
73
----- Mensagem de Andrew Lenton < a@...> --------- Data: Tue, 22 Aug 2023 13:26:31 +0100
De: Andrew Lenton < a@...> Assunto: Re: [YaesuFT847] No S meter reading
Hi S meter is derived from the agc level, do a place to start
Andrew on beach in Cornwall
Get
On 22 Aug 2023, at 13:00, Jaime Eloy < cu3ak@...> wrote:
My FT847 do not have any s meter reading. Audio seems ok as tx also.
Where to look pse for this issue?
73
CU3AK
Eloy
----- Fim da mensagem de Andrew Lenton < a@...> -----
|
Hi S meter is derived from the agc level, do a place to start
73
Andrew on beach in Cornwall
Get
On 22 Aug 2023, at 13:00, Jaime Eloy < cu3ak@...> wrote:
My FT847 do not have any s meter reading. Audio seems ok as tx also.
Where to look pse for this issue?
73
CU3AK
Eloy
|
My FT847 do not have any s meter reading. Audio seems ok as tx also.
Where to look pse for this issue?
73
CU3AK
Eloy
|
Re: No audio in Yaesu MD-100A8X Microphone and yaesu md-100 A8X
Sounds like a cable problem. ?
? Do you know someone with an MD100 who you can borrow their cable? ?At least lend them your cable and see if it¡¯s working.?
? ?Need to think about this and try some testing in one of my MD100 and get back to you.
De Spence M0STO? Sent while portable! please excuse typos.
toggle quoted message
Show quoted text
On 1 Aug 2023, at 13:31, Steven KC3DOW via groups.io <treasurebox7762@...> wrote:
?Hello Spence,
This is results of the continuity measurements.
I measured continuity between pins 7 and 8 at the bottom of the mic and it tested OK. so the mic itself is good.
I then measured pins 7 and 8 from the cord going to the base and the end that goes to the mic and no reading.
When I measure pins 7 and 8 in the cord that goes to the phone jack to the radio I get no reading.
I tried with the PTT off and down with the same results (radio off))
Regarding the mic gain I followed your instructions with no results (transmits but no audio)
Thank You,
Steven/kc3dow
|
Re: No audio in Yaesu MD-100A8X Microphone and yaesu md-100 A8X
Hello Spence,
This is results of the continuity measurements.
I measured continuity between pins 7 and 8 at the bottom of the mic and it tested OK. so the mic itself is good.
I then measured pins 7 and 8 from the cord going to the base and the end that goes to the mic and no reading.
When I measure pins 7 and 8 in the cord that goes to the phone jack to the radio I get no reading.
I tried with the PTT off and down with the same results (radio off))
Regarding the mic gain I followed your instructions with no results (transmits but no audio)
Thank You,
Steven/kc3dow
|
Re: No audio in Yaesu MD-100A8X Microphone and yaesu md-100 A8X
The only switches underside are high emphasis, filter pass through and low cut.
? There is no in and off.
De Spence M0STO? Sent while portable! please excuse typos.
toggle quoted message
Show quoted text
On 1 Aug 2023, at 00:19, Jeff M0UHF <jeff.elliott45@...> wrote:
?
All you have to do is turn the microphone on, you will find a switch underneath on the base. Some radios it will work on both of us. It will only work on position one or position two.?
Sent from Jeff M0UHF?
On 31 Jul 2023, at 23:11, Spence M0STO via groups.io <unavailable.equal@...> wrote:
? Sorry forgot to ask if you have tried shouting into the mic in SSB.?
? Also the shield/ground wire is between the mic element and the internal cabling. Replacing the external cable won¡¯t solve this problem.
De Spence M0STO?
Sent while portable! please excuse typos.
On 31 Jul 2023, at 23:08, Spencer Tomlinson <unavailable.equal@...> wrote:
?Hi, Steven,
? ? ? ? ? ? ? ? ? ?I¡¯ve had a few MD100¡¯s and they have a common failing. The shield wire drops off and you lose microphone ground (not to be confused with signal ground on pin 5). The actual mic is wired to Pin 8 and pin 7. Check continuity between pin
7 as this is the shield wire and microphone ground.
? First you normally get an annoying hum with your audio that eventually becomes no audio.
?This may or not be your problem but I¡¯ve got a genuine brand new mic element here that was bought because I misdiagnosed the element as faulty when it was actually the mic shield/ground wire.
? Also remember the FT847 has an option to have the FM mic gain on the front knob or from a present in the display. The MD100-ADX has really poor gain in my experience. ?Menu 25 FM-Pset. Turn that up to max for testing (level from off to 0 to 63) and also
the front mic gain obviously if this is set to off.
? I hope this helps.
De Spence M0STO?
Sent while portable! please excuse typos.
On 31 Jul 2023, at 22:20, Steven KC3DOW via groups.io <treasurebox7762@...> wrote:
?
I have a Yaesu MD-100A8X microphone connected to a Yaesu FT-847 radio and when I press the PTT the radio shows a carrier going out and the carrier is being seen by all parties but no audio. Through the repeater..
?
I don¡¯t think the problem is in the radio because when I connect the hand microphone it works OK.
?
I have no idea how to troubleshoot this but I am a quick learner. I replaced the mic. To radio cord but I still have the problem.
?
Thanks,
Steven/kc3dow
Note. I posted this on the other ft-847 group thinking it was here.
It seems that I was not a member of this group.
|
Re: No audio in Yaesu MD-100A8X Microphone and yaesu md-100 A8X
All you have to do is turn the microphone on, you will find a switch underneath on the base. Some radios it will work on both of us. It will only work on position one or position two.?
Sent from Jeff M0UHF?
toggle quoted message
Show quoted text
On 31 Jul 2023, at 23:11, Spence M0STO via groups.io <unavailable.equal@...> wrote:
? Sorry forgot to ask if you have tried shouting into the mic in SSB.?
? Also the shield/ground wire is between the mic element and the internal cabling. Replacing the external cable won¡¯t solve this problem.
De Spence M0STO?
Sent while portable! please excuse typos.
On 31 Jul 2023, at 23:08, Spencer Tomlinson <unavailable.equal@...> wrote:
?Hi, Steven,
? ? ? ? ? ? ? ? ? ?I¡¯ve had a few MD100¡¯s and they have a common failing. The shield wire drops off and you lose microphone ground (not to be confused with signal ground on pin 5). The actual mic is wired to Pin 8 and pin 7. Check continuity between pin
7 as this is the shield wire and microphone ground.
? First you normally get an annoying hum with your audio that eventually becomes no audio.
?This may or not be your problem but I¡¯ve got a genuine brand new mic element here that was bought because I misdiagnosed the element as faulty when it was actually the mic shield/ground wire.
? Also remember the FT847 has an option to have the FM mic gain on the front knob or from a present in the display. The MD100-ADX has really poor gain in my experience. ?Menu 25 FM-Pset. Turn that up to max for testing (level from off to 0 to 63) and also
the front mic gain obviously if this is set to off.
? I hope this helps.
De Spence M0STO?
Sent while portable! please excuse typos.
On 31 Jul 2023, at 22:20, Steven KC3DOW via groups.io <treasurebox7762@...> wrote:
?
I have a Yaesu MD-100A8X microphone connected to a Yaesu FT-847 radio and when I press the PTT the radio shows a carrier going out and the carrier is being seen by all parties but no audio. Through the repeater..
?
I don¡¯t think the problem is in the radio because when I connect the hand microphone it works OK.
?
I have no idea how to troubleshoot this but I am a quick learner. I replaced the mic. To radio cord but I still have the problem.
?
Thanks,
Steven/kc3dow
Note. I posted this on the other ft-847 group thinking it was here.
It seems that I was not a member of this group.
|
Re: No audio in Yaesu MD-100A8X Microphone and yaesu md-100 A8X
Sorry forgot to ask if you have tried shouting into the mic in SSB.?
? Also the shield/ground wire is between the mic element and the internal cabling. Replacing the external cable won¡¯t solve this problem.
De Spence M0STO? Sent while portable! please excuse typos.
toggle quoted message
Show quoted text
On 31 Jul 2023, at 23:08, Spencer Tomlinson <unavailable.equal@...> wrote:
? Hi, Steven, ? ? ? ? ? ? ? ? ? ?I¡¯ve had a few MD100¡¯s and they have a common failing. The shield wire drops off and you lose microphone ground (not to be confused with signal ground on pin 5). The actual mic is wired to Pin 8 and pin 7. Check continuity between pin 7 as this is the shield wire and microphone ground.
? First you normally get an annoying hum with your audio that eventually becomes no audio.
?This may or not be your problem but I¡¯ve got a genuine brand new mic element here that was bought because I misdiagnosed the element as faulty when it was actually the mic shield/ground wire.
? Also remember the FT847 has an option to have the FM mic gain on the front knob or from a present in the display. The MD100-ADX has really poor gain in my experience. ?Menu 25 FM-Pset. Turn that up to max for testing (level from off to 0 to 63) and also the front mic gain obviously if this is set to off.
? I hope this helps.
De Spence M0STO? Sent while portable! please excuse typos. On 31 Jul 2023, at 22:20, Steven KC3DOW via groups.io <treasurebox7762@...> wrote:
? I have a Yaesu MD-100A8X microphone connected to a Yaesu FT-847 radio and when I press the PTT the radio shows a carrier going out and the carrier is being seen by all parties but no audio. Through the repeater..
?
I don¡¯t think the problem is in the radio because when I connect the hand microphone it works OK.
?
I have no idea how to troubleshoot this but I am a quick learner. I replaced the mic. To radio cord but I still have the problem.
?
Thanks,
Steven/kc3dow
Note. I posted this on the other ft-847 group thinking it was here. It seems that I was not a member of this group.
|
Re: No audio in Yaesu MD-100A8X Microphone and yaesu md-100 A8X
Hi, Steven, ? ? ? ? ? ? ? ? ? ?I¡¯ve had a few MD100¡¯s and they have a common failing. The shield wire drops off and you lose microphone ground (not to be confused with signal ground on pin 5). The actual mic is wired to Pin 8 and pin 7. Check continuity between pin 7 as this is the shield wire and microphone ground.
? First you normally get an annoying hum with your audio that eventually becomes no audio.
?This may or not be your problem but I¡¯ve got a genuine brand new mic element here that was bought because I misdiagnosed the element as faulty when it was actually the mic shield/ground wire.
? Also remember the FT847 has an option to have the FM mic gain on the front knob or from a present in the display. The MD100-ADX has really poor gain in my experience. ?Menu 25 FM-Pset. Turn that up to max for testing (level from off to 0 to 63) and also the front mic gain obviously if this is set to off.
? I hope this helps.
De Spence M0STO? Sent while portable! please excuse typos.
toggle quoted message
Show quoted text
On 31 Jul 2023, at 22:20, Steven KC3DOW via groups.io <treasurebox7762@...> wrote:
? I have a Yaesu MD-100A8X microphone connected to a Yaesu FT-847 radio and when I press the PTT the radio shows a carrier going out and the carrier is being seen by all parties but no audio. Through the repeater..
?
I don¡¯t think the problem is in the radio because when I connect the hand microphone it works OK.
?
I have no idea how to troubleshoot this but I am a quick learner. I replaced the mic. To radio cord but I still have the problem.
?
Thanks,
Steven/kc3dow
Note. I posted this on the other ft-847 group thinking it was here. It seems that I was not a member of this group.
|
No audio in Yaesu MD-100A8X Microphone and yaesu md-100 A8X
I have a Yaesu MD-100A8X microphone connected to a Yaesu FT-847 radio and when I press the PTT the radio shows a carrier going out and the carrier is being seen by all parties but no audio. Through the repeater..
?
I don¡¯t think the problem is in the radio because when I connect the hand microphone it works OK.
?
I have no idea how to troubleshoot this but I am a quick learner. I replaced the mic. To radio cord but I still have the problem.
?
Thanks,
Steven/kc3dow
Note. I posted this on the other ft-847 group thinking it was here. It seems that I was not a member of this group.
|
Impeccable condition.? Includes?the following: - CW filter 500Hz - Signalink?USB digital?sound card?for digital mode like FT8, SSTV, RTTY - RS232 to USB adapter for CAT rig control
- Power cable?with Power Poles - Brand new in the box MH-31B8 Microphone
I can provide pictures.? $840 including shipping CONUS and professionally?packed.? Fully tested.? Used it on satellites as well as HF for CW, FT8, RTTY and so on.
Kent K9EZ
Oak Island NC
|
Hi, ? ? In the past I have been repairing FT847's and now I have a surplus of replacement power buttons.These are genuine Alps Alpine from the USA and identical to those used by Yaesu (I've seen them side?by?side and they are identical).
? ?6 posted to the UK, International buyers..... simply too expensive unless you want 10 or so.
? de Spencer M0STO
? ?
|
Re: Posting items for sale here?
Hi Spence, restrict it to Yeasu only if possible, test equipment ok.
Leighton. GW3FSP.
|
Re: Posting items for sale here?
Go for it. As long as you aren't spamming all the time I think it might be OK.
Micky K1XH
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Show quoted text
On 2023-07-09 05:12 PM, Spence M0STO via groups.io wrote:
Is it OK to post for sale items here?
?
? I've a surplus of an item and wondered?if folks here wanted them cheaper than dealer price? Getting out of the repair business for a bit.
?
?de Spence M0STO
|
Posting items for sale here?
Is it OK to post for sale items here?
? I've a surplus of an item and wondered?if folks here wanted them cheaper than dealer price? Getting out of the repair business for a bit.
?de Spence M0STO
|
The USA frequency settings may extend the 40m band, if not just live with the full extension and you will also get 60M
73
Andrew
Get
Hi All.
I bought some years ago FT847.
Rig is ok and good condition.
Some years ago at OH we got extension to 7 MHZ.
Here is allowed now up to 7200 kHz, and rsdio
can transmit up to 7100 kHz.
I have running around web and only mod
I found to make it transmit full HF? bands.
I dont want to that, just missing 100 kHz.
Any Ideas ??
73s de rami,oh6bi
|
Hi All.
I bought some years ago FT847.
Rig is ok and good condition.
Some years ago at OH we got extension to 7 MHZ.
Here is allowed now up to 7200 kHz, and rsdio
can transmit up to 7100 kHz.
I have running around web and only mod
I found to make it transmit full HF? bands.
I dont want to that, just missing 100 kHz.
Any Ideas ??
73s de rami,oh6bi
|
For what it's worth...
I did what is shown in the video years ago, paralleling the contacts and adding a 0.01 uf cap. It's pretty easy as the front panel tips down. Never had a problem. And I do turn the radio on and off with the PS just to be cautious. Also, I bought some spare switches. I don't remember the source but it was either Digikey or Mouser. If you would like the P/N I can look for the spare package. But that could take a month as I am on travel. There should be a note in the files somewhere.
73, Richard AG5M
On Wednesday, June 21, 2023 at 03:32:19 AM PDT, Jorge Lopes <ct1exr@...> wrote:
Hi all,?
Sorry it's in Portuguese but it's good solution too:
Maybe subtitles could help?
73,?
|
I would suggest you do not just turn psu on, it will more than likely have a voltage surge on switch on. Disconnect positive from psu, turn on psu and then connect positive. I have plenty of switches in stock, that are on ebay, but ebay vastly inflates the price for shipping to abroad from UK.? Direct is considerably cheaper.
On Wed, 21 Jun 2023, 14:32 Andrew Lenton, < a@...> wrote: There is a whole thread about low VHF power it may not be the output transistor ? KR ? Andrew ? From: [email protected] [mailto:[email protected]] On Behalf Of Frank
Sent: 21 June 2023 13:50
To: [email protected]
Subject: Re: [YaesuFT847] FT-847 power switch ? HI Years ago I had the same problem too. Sooner or later it happens to everyone, it depends on how you use the radio to know if "BEFORE" OR "AFTER"... The first time I shorted the contacts with the other position, then that one also blew and I replaced the switch completely with a new one which I found identical. It has held since then, but it will happen again...maybe... I always use the radio, now these days I notice another problem that gives me little VHF power... maybe the power amps or something else... I've been using it for years and years now... something had to happen... unfortunately.
73
Frank
|
Andy Bosworth
Andrew Lenton
Spence G5STO
Jeff M0UHF
gw3fsp
Richard AG5M