Hi Buddy, I just wanted to let you know that I replaced the FET Q6 on the processor board also and now the ALC is rock solid. The sad part is that my first instinct was to replace the ALC pot. and Q6 from the start, but I talked myself out of it. Oh well. I do want to thank you for your replies and pointing me back to the right direction. It's much appreciated. Bob Dostall
Senior Technician
Well Buddy I decided to just replace VR2 ALC pot and VR1 as well on the speech processor board. That seems to have pretty much fixed it. The ALC meter deflection diminishes somewhat after I ran it for an hour, but I still get about a half of a scale of deflection?after an hour. It was never that good before. I did try another driver and same results. I think that I'll consider myself happy at this point. Bob Dostall
Senior Technician
On Tue, Jun 8, 2021 at 1:15 PM Bruce Collins KB0TJ < kb0tj1@...> wrote: Have you replaced the 12BY7 with a new one yet?
I have found a few times an ALC issue go away for some reason with a new driver tube.?
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Well Buddy I decided to just replace VR2 ALC pot and VR1 as well on the speech processor board. That seems to have pretty much fixed it. The ALC meter deflection diminishes somewhat after I ran it for an hour, but I still get about a half of a scale of deflection?after an hour. It was never that good before. I did try another driver and same results. I think that I'll consider myself happy at this point. Bob Dostall
Senior Technician
On Tue, Jun 8, 2021 at 1:15 PM Bruce Collins KB0TJ < kb0tj1@...> wrote: Have you replaced the 12BY7 with a new one yet?
I have found a few times an ALC issue go away for some reason with a new driver tube.?
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Have you replaced the 12BY7 with a new one yet?
I have found a few times an ALC issue go away for some reason with a new driver tube.?
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Hi Buddy, VR2 on the processor board seems fine. I did find several cold solder joints on the processor board that was causing erratic alc readings when trying to adjust VR2 and also very low output power with the processor turned on. I ended up re-soldering the entire processor board which solved those problems. I've recapped the power supply p.c.b. and replaced the two diodes in the alc circuit underneath the finals. I replaced a bad electrolytic on the screen grid of the driver tube. I've checked every component with my modern component testers and I'm hitting a brick wall now.
This was an ebay buy that a local ham purchased. I do a lot of repairs on all sorts of radios for the local guys. I had to do a lot of studying on this radio and am aware of the cb crowd. I would guess that this one was used for the 11m band.? lol.? I'm going to try to keep plugging away today on it. I'll try messing around with the alc control on the processor board again.
Thank you for your reply Buddy. Have a good day. Bob Dostall
Senior Technician
Hi Bob, Interesting problem.? And with full output I do not think the finals would cause that but I have seen strange things before. Really does sound like something in the ALC circuit. Have you checked the ALC control itself?? I have seen those become intermitted before. ? With that in note I have also seen wiring issues that gives false ALC readings. Remember these were used by many cb’ers. I will pull the notes and see what I can find in the next day or so.? Really sounds like something simple. ? Buddy ? ? I've been troubleshooting an FT-101e with an ALC issue. I get full power out at all times. After about 10 minutes of warmup, the alc fails to deflect much to the left. It works great for a few a minutes. I've checked and replaced as needed all of the components in the alc circuit that feed to the processor board.
I disconnected the white wire that feeds the processor board and my -1.2v steadily drops to about -.3v.
I don't know where else to look. Would gassy finals cause this? Even though I still get full output power?
Any help would be greatly appreciated.
Bob KF8IY
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Hi Bob, Interesting problem. ?And with full output I do not think the finals would cause that but I have seen strange things before. Really does sound like something in the ALC circuit. Have you checked the ALC control itself? ?I have seen those become intermitted before. ? With that in note I have also seen wiring issues that gives false ALC readings. Remember these were used by many cb’ers. I will pull the notes and see what I can find in the next day or so.? Really sounds like something simple. ? Buddy ?
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From: [email protected] < [email protected]> On Behalf Of bobd@... Sent: Monday, June 7, 2021 11:29 AM To: [email protected]Subject: [Yaesu-FT-101] FT-101e ALC issue ? I've been troubleshooting an FT-101e with an ALC issue. I get full power out at all times. After about 10 minutes of warmup, the alc fails to deflect much to the left. It works great for a few a minutes. I've checked and replaced as needed all of the components in the alc circuit that feed to the processor board.
I disconnected the white wire that feeds the processor board and my -1.2v steadily drops to about -.3v.
I don't know where else to look. Would gassy finals cause this? Even though I still get full output power?
Any help would be greatly appreciated.
Bob KF8IY
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I've been troubleshooting an FT-101e with an ALC issue. I get full power out at all times. After about 10 minutes of warmup, the alc fails to deflect much to the left. It works great for a few a minutes. I've checked and replaced as needed all of the components in the alc circuit that feed to the processor board.
I disconnected the white wire that feeds the processor board and my -1.2v steadily drops to about -.3v.
I don't know where else to look. Would gassy finals cause this? Even though I still get full output power?
Any help would be greatly appreciated.
Bob KF8IY
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Hi Bruce,
Thanks for the link. ?I’m glad to see that there is some interest in these old radios.
I’ll study what has sold and come up with a plan.
73
Graham
VO1DZA
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The oldest, early FT-101 are not nearly as popular (or desirable) as the FT-101B... and the FT-101B is not as popular (or desirable) as the FT-101E series or FT-101E-F radios with their
built in RF processor.
However, that does not mean there is no interest in the early FT-101 radios, nor does it mean they have very little value.
A near complete station, sans the scope, might be desirable to someone, as a buyer can sell off the accessories if wanted... or keep the accessories and sell off the less desirable FT-101.
So... if you are just looking to sell all your old 1970s gear and cash out, I would think the better plan is to sell each piece individually.
Do a quick search on eBay to see what completed and sold FT-101 items have sold for.... simple 15 min job to answer your questions.
Try this:
https://www.ebay.com/sch/i.html?_from=R40&_nkw=yaesu+ft-101&_sacat=0&LH_TitleDesc=0&rt=nc&LH_Sold=1&LH_Complete=1
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Hi everybody.
I’m new here.
I have an early vintage FT-101 (w/ spare finals), with the speaker/phone patch, FV-101 remote VFO, and the matching scope. ?Everything worked when last used (last summer). ?Non smoking house. ?I’ve had this equipment (except for the scope) since new, when I was first licensed in 1971. ?I am now to the point in my life where I need to lighten my load and pass on the good equipment and throw out the junk.
So.... ?What are these items worth? ?Are any of these items of interest to anyone here?
I am located in Newfoundland Canada.?
73
Graham, VO1DZA
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Re: FRL-263 DO12/04CS relay
Thanks for the reply and the suggestion.
Regards
Richard /WD4IKI
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Does anyone know where one can find a replacement for the FRL-263 DO12/04CS relay?? I know several radios including my FT-107m have these mounted on the chasis.
73
Richard Goldblatt / WD4IKI
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Re: Correct serial numbers
Only hums on transmit my locals hear it and I hear it with my headphones on only when keyed up ? Sent from for Windows 10 ?
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From: kc4umoSent: Sunday, February 7, 2021 8:20 PM To: [email protected]Subject: Re: [Yaesu-FT-101] Correct serial numbers ? Hi Paul, Looks like your 101 was made May of 1985. So not worry with the side number, only the rear. ? 5= 85 G= May 301207 production run. ? As far as the hum you will need to figure out if it is audio or power supply. Remove the audio board and see if you still have a hum, if so then power supply. ? Hope that helps. ? Buddy ? ? I have acquired a FT101E .and somewhat confused serial number on back is 5G 301207? ? and one on side chassis just 301452? Trying to track down the correct model early /mid /late to determine if the correct boards are installed trying to track down? a problem Iam transmitting a hum . Any help or guidance would be appreciated
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Re: Correct serial numbers
Hi Paul, Looks like your 101 was made May of 1985. So not worry with the side number, only the rear. ? 5= 85 G= May 301207 production run. ? As far as the hum you will need to figure out if it is audio or power supply. Remove the audio board and see if you still have a hum, if so then power supply. ? Hope that helps. ? Buddy ?
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From: [email protected] < [email protected]> On Behalf Of Paul Werz Sent: Sunday, February 7, 2021 1:30 PM To: [email protected]Subject: [Yaesu-FT-101] Correct serial numbers ? I have acquired a FT101E .and somewhat confused serial number on back is 5G 301207? ? and one on side chassis just 301452? Trying to track down the correct model early /mid /late to determine if the correct boards are installed trying to track down? a problem Iam transmitting a hum . Any help or guidance would be appreciated
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I have acquired a FT101E .and somewhat confused serial number on back is 5G 301207? ? and one on side chassis just 301452? Trying to track down the correct model early /mid /late to determine if the correct boards are installed trying to track down? a problem Iam transmitting a hum . Any help or guidance would be appreciated
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Locked
Re: FT-101 Repairs Needed
Paul Harrold is your man. He is on FB under the group ?Ft-101’s.?
-Kevin
w2fa
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Re: FR101 and FL101 twins
Ahh - Didn't appreciate that they fully restored and working. I'll take another look in the piggy bank...
Peter G0LQU
Peter Bradbury wrote:
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Hi Peter
No, not really but it took me a lot of time to restore them. Includes filters, speaker, yd844 mic etc.
Was the ?100 for a transverter??
Regards Peter
G4EXK
On 8 Nov 2020, at 14:52, Peter Fardell via groups.io <peter.j.fardell@...> wrote:
?Hi Peter - do you have a ball park figure for this - how about ?100?
Peter G0LQU
Peter Bradbury wrote:
Hi Emerson
That’s correct. These also have the front plastic on them
Regards
Peter
G4EXK
On 8 Nov 2020, at 01:09, Emerson ? ? via groups.io <elsh_x@...> wrote:
?
Dear Peter
I don't understand, you are talking about FTV-250 and FTV 650?
Emerson
PP6EW
Em sábado, 7 de novembro de 2020 19:23:48 BRT, Peter Bradbury <peter.g4exk@...> escreveu:
Hi guys. They are still available. If anybody wants the 2 and 6 meter transverters, they can be thrown in as well.
Offers anyone?
Peter
G4EXK Blackburn
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Re: FR101 and FL101 twins
Hi Peter
No, not really but it took me a lot of time to restore them. Includes filters, speaker, yd844 mic etc.
Was the ?100 for a transverter??
Regards
Peter
G4EXK
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On 8 Nov 2020, at 14:52, Peter Fardell via groups.io <peter.j.fardell@...> wrote:
?Hi Peter - do you have a ball park figure for this - how about ?100?
Peter G0LQU
Peter Bradbury wrote:
Hi Emerson
That’s correct. These also have the front plastic on them
Regards
Peter
G4EXK
On 8 Nov 2020, at 01:09, Emerson ? ? via groups.io <elsh_x@...> wrote: ?
Dear Peter
I don't understand, you are talking about FTV-250 and FTV 650?
Emerson
PP6EW
Em sábado, 7 de novembro de 2020 19:23:48 BRT, Peter Bradbury <peter.g4exk@...> escreveu:
Hi guys. They are still available. If anybody wants the 2 and 6 meter transverters, they can be thrown in as well.
Offers anyone?
Peter
G4EXK Blackburn
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Re: FR101 and FL101 twins
Hi Peter - do you have a ball park figure for this - how about ?100?
Peter G0LQU
Peter Bradbury wrote:
toggle quoted message
Show quoted text
Hi Emerson
That’s correct. These also have the front plastic on them
Regards
Peter
G4EXK
On 8 Nov 2020, at 01:09, Emerson ? ? via groups.io <elsh_x@...> wrote:
?
Dear Peter
I don't understand, you are talking about FTV-250 and FTV 650?
Emerson
PP6EW
Em sábado, 7 de novembro de 2020 19:23:48 BRT, Peter Bradbury <peter.g4exk@...> escreveu:
Hi guys. They are still available. If anybody wants the 2 and 6 meter transverters, they can be thrown in as well.
Offers anyone?
Peter
G4EXK Blackburn
|
Re: FR101 and FL101 twins
Hi Emerson That’s correct. These also have the front plastic on them
Regards Peter
toggle quoted message
Show quoted text
On 8 Nov 2020, at 01:09, Emerson ? ? via groups.io <elsh_x@...> wrote:
?
Dear Peter
I don't understand, you are talking about FTV-250 and FTV 650?
Emerson PP6EW
Em sábado, 7 de novembro de 2020 19:23:48 BRT, Peter Bradbury <peter.g4exk@...> escreveu:
Hi guys. They are still available. If anybody wants the 2 and 6 meter transverters, they can be thrown in as well.
Offers anyone?
Peter
G4EXK?
Blackburn
|
Re: FR101 and FL101 twins
Dear Peter
I don't understand, you are talking about FTV-250 and FTV 650?
Emerson PP6EW
Em sábado, 7 de novembro de 2020 19:23:48 BRT, Peter Bradbury <peter.g4exk@...> escreveu:
Hi guys. They are still available. If anybody wants the 2 and 6 meter transverters, they can be thrown in as well.
Offers anyone?
Peter
G4EXK?
Blackburn
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Bruce Collins
