Re: FW: [Yaesu-FT-101] Deaf FT101Z
Hi
about 3sk53 you can try a bf998
Emerson PP6EW
Em qua., 20 de out. de 2021 às 13:46, Roger VE7LB < Roger_VE7LB@...> escreveu:
? ? ? My bought from new 40 year old FT101Z has suddenly ‘gone deaf’.? It still works but received signal strength is now very low. S meter not showing anything on receive and attenuator apparently not working.? I have followed the guidance in the Maintenance Service Manual and my reasoning leads me to think the problem is in the RF board- either Q101 <3SK53-03) or Q102<J310>.? I have no analytical equipment except digital VOM and am waiting on board extenders so I can extract the RF board to check it out.? Another question is – what would be a modern equivalent for replacing the 3SK53?? Any advice gratefully received.? Alistair (Al)? GM4ENF.
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Re: FW: [Yaesu-FT-101] Deaf FT101Z
Thanks Bruce for quick response to my request for help.? Never seen Deoxit for sale here in t he UK although I have seen it mentioned elsewhere.? I will have a look for some.? Sorting switch must be better than digging out FETs etc! ? Al GM4ENF ? Sent from for Windows ?
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From: Bruce CollinsSent: 20 October 2021 18:30 To: [email protected]Subject: Re: FW: [Yaesu-FT-101] Deaf FT101Z ? First thing to do is get a little spray can of DeOxit. Turn the radio on it’s back with the front panel up. Hold a rag near the attenuator switch assembly to stop any over spray on?the outside of the panel.?
Flip the switch up all the way to max attenuation and gently push the spray nozzle tube into the little space under the toggle and give it a little shot of the DeOxit. There is a small rectangular felt gasket under the panel the toggle bat passes through and you can get a little shot of DeOxit solvent past it into the switch mechanism. ?
Then flip the ATT switch up and down a half dozen times or so.?
Now do the same thing with the spray nozzle tube but with the toggle switch all the way down.. repeat the single spray shot and flip the switch up and down a half dozen times. ??
If the contacts are dirty in that switch it wipes out all the radio’s receive signal.?
If this does nothing for you problem then move on to other issues. One of which could still be a bad ATT switch!!
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Re: FW: [Yaesu-FT-101] Deaf FT101Z
First thing to do is get a little spray can of DeOxit. Turn the radio on it’s back with the front panel up. Hold a rag near the attenuator switch assembly to stop any over spray on?the outside of the panel.?
Flip the switch up all the way to max attenuation and gently push the spray nozzle tube into the little space under the toggle and give it a little shot of the DeOxit. There is a small rectangular felt gasket under the panel the toggle bat passes through and you can get a little shot of DeOxit solvent past it into the switch mechanism. ?
Then flip the ATT switch up and down a half dozen times or so.?
Now do the same thing with the spray nozzle tube but with the toggle switch all the way down.. repeat the single spray shot and flip the switch up and down a half dozen times. ??
If the contacts are dirty in that switch it wipes out all the radio’s receive signal.?
If this does nothing for you problem then move on to other issues. One of which could still be a bad ATT switch!!
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FW: [Yaesu-FT-101] Deaf FT101Z
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From: Alistair via groups.io <alistairfyffe@...> Sent: Wednesday, October 20, 2021 7:58 AM To: [email protected]Subject: [Yaesu-FT-101] Deaf FT101Z
?
My bought from new 40 year old FT101Z has suddenly ‘gone deaf’.? It still works but received signal strength is now very low. S meter not showing anything on receive and attenuator apparently not working.? I have followed the guidance in the Maintenance Service Manual and my reasoning leads me to think the problem is in the RF board- either Q101 <3SK53-03) or Q102.? I have no analytical equipment except digital VOM and am waiting on board extenders so I can extract the RF board to check it out.? Another question is – what would be a modern equivalent for replacing the 3SK53?? Any advice gratefully received.? Alistair (Al)? GM4ENF.
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Sounds like you’ve got an exciting winter ahead.
Best wishes,
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Hi Kenoli and thanks Roger for finding the a better SM
Like the song goes “we only just begun “
My xyz and I are still unpacking and I have the boats and our cabin to winterize and I better also get a dipole up before the snow arrives!!!!?
The restoration of The FT101 is going to be a winter project but the first project once my bench is setup.
As far as caps go I’ve never had to many issues getting HV 500V caps but that was 5 years ago now so I’ll look were ?I got them and report back.
I need the ac power chord and found a source on eBay with “locking “ tabs so might just go with that.
Happy Thanksgiving es 73
david
ve3dpc
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Hi Kenoli and thanks Roger for finding the a better SM
Like the song goes “we only just begun “
My xyz and I are still unpacking and I have the boats and our cabin to winterize and I better also get a dipole up before the snow arrives!!!!?
The restoration of The FT101 is going to be a winter project but the first project once my bench is setup.
As far as caps go I’ve never had to many issues getting HV 500V caps but that was 5 years ago now so I’ll look were ?I got them and report back.
I need the ac power chord and found a source on eBay with “locking “ tabs so might just go with that.
Happy Thanksgiving es 73
david
ve3dpc
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Hi again Kenoli,
I also could not find the Carrier Balance procedure in the Service Manual I have on hand. I did find a better SM copy and have uploaded it to our FILES section here.
Look for CARRIER BALANCE on page 7-10 (Adobe page 184) of the FT-101 Service Manual Best Copy OCR that I just uploaded.
Thanks to Emerson PP6EW for the heads-up on the better SM.
73
Roger VE7LB
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Dave — I’m also refurbishing an old FT-101B which I actually bought back in the 70s and used then. ?One thing I need to know is regarding the BM adjustment pot (next to the ALC). ?I think it may have been changed inadvertently and I can’t find anything in the user or service manuals that says anything about this adjustment. ?Do you have any information about this?
I have checked the rig out and it does receive and transmit and the pots and switches are noisy. ?I haven’t replaced any capacitors. ?Others have said replace all the electrolytics. ?I appreciate your providing advice for specific capacitors and sources.
I had an old tube bass amplifier and had the?worst time getting capacitors with high enough voltage ratings. ?I actually blew some up with lower voltage ratings. ?Fortunately Fender had placed them in a metal box so they didn’t blow up all over the rig. ?It did make for a novel performance experience.
Thanks,
—碍别苍辞濒颈 KB6EMG
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Hi Dave,
Do you also have the 120 volt power cord?
About your 40+ year old FT-101 high voltage capacitors. You should replace the two main high voltage capacitors on a 40+ year old FT-101. See eBay item https://www.ebay.com/itm/254527364032?hash=item3b43035bc0:g:CDoAAOSwyWheWysT (I have nothing to do with the seller). If they fail they can take out the power transformer.
It's also a good idea to change out C13, the 80pf@ 1kv driver to final coupling capacitor.? Also C11 a 200pf @ 1kv in the driver plate circuit? Bad things can happen if C13 shorts.
If you have scratchy controls and switches. The first thing I do with a radio that has been stored for a long time is exercise all of the front switches (especially the band switch) and pots end to end. Sometimes as high as 40 times each with the power off. Then I check to see what is still noisy and go from there. Most people like the Deoxit brand for cleaning switches and pots. Use care on the band switch - I use a toothpick and apply only to the contacts.
73
Roger VE7LB Group Owner
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Hi I’m newbie to this group and this radio my serial number is 2F 123167 the unit looks in great condition? but still need information? here is a picture? I have a yaesu handheld microphone 500 ohm and the dc power supply cable wired connector? where do I start? any help would be appreciated? 73   David VE3DPC
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FT-101E vs. FT-101ZD Receive Performance and Operation — Which One is Better?
Considering the receive performances and operation of the FT-101E and the FT-101ZD, which one is better and why?
Thank you.
73, Michael Smith, N4KZO
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Gray Paint for FT-101ZD Cabinet Screws
I bought some 316 stainless steel screws for the FT-101ZD cabinet covers from McMaster-Carr. ?Can anyone recommend a spray-paint that is the cabinet’s shade of gray?
Thank you.
73, Michael Smith, N4KZO
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Hi Kenoli,
Sorry no one has got back to you until now.
RE your BM adjustment: If you have another radio with a receiver use this procedure. Tune up the radio you want to adjust on one of the lower bands (80, 40 or 20) into a dummy load. Switch it to USB or LSB and listen to it with the second receiver. Then turn the mike gain all the way down and adjust the control right next to the ALC pot a bit off center until you can hear the carrier clearly on the second receiver. You may have to tune the second receiver off frequency a bit to hear the carrier as a tone. Then adjust the POT for the lowest carrier signal. You may also see the IC meter go up and down a bit.
RE your 40 year old FT-101B high voltage capacitors. You should replace the two main high voltage capacitors on a 40+ year old FT-101. See eBay item https://www.ebay.com/itm/254527364032?hash=item3b43035bc0:g:CDoAAOSwyWheWysT (I have nothing to do with the seller). If they fail they can take out the power transformer.
It's also a good idea to change out C13, the 80pf@ 1kv driver to final coupling capacitor.? Also C11 a 200pf @ 1kv in the driver plate circuit? Bad things can happen if C13 shorts.
RE scratchy controls and switches. The first thing I do with a radio that has been stored for a long time is exercise all of the front switches (especially the band switch) and pots end to end. Sometimes as high as 40 times each with the power off. Then I check to see what is still noisy and go from there. Most people like the Deoxit brand for cleaning switches and pots. Use care on the band switch - I use a toothpick and apply only to the contacts.
73
Roger VE7LB Group Owner
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Thanks.? I have that manual however and it says nothing about a bm adjustment.
--Kenoli
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Em sábado, 25 de setembro de 2021 22:40:00 BRT, Kenoli Oleari <kenoli@...> escreveu:
I think my BM adjustment was inadvertently changed when adjusting the ALC.? They are next to each other.? I couldn't find anything about this adjustment in the user or repair manuals.? Can any help me make sure the BM adjustment is set correctly?
On a different topic.? I have an FT-101B that I used back in the 70s.? It has been sitting in a box for maybe 40 years.? I started it up using a variac and bringing the voltage up slowly.? It is clear from noise in various controls and switches that there are dirty of corroded contacts.? Is it advisable to spray contact cleaner on noise controls and, if so, what is the correct way to do this?
It does send and receive.
I look forward to and appreciate any assistance on these two matters.
Thanks,
--Kenoli
KB6EMG
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I think my BM adjustment was inadvertently changed when adjusting the ALC.? They are next to each other.? I couldn't find anything about this adjustment in the user or repair manuals.? Can any help me make sure the BM adjustment is set correctly?
On a different topic.? I have an FT-101B that I used back in the 70s.? It has been sitting in a box for maybe 40 years.? I started it up using a variac and bringing the voltage up slowly.? It is clear from noise in various controls and switches that there are dirty of corroded contacts.? Is it advisable to spray contact cleaner on noise controls and, if so, what is the correct way to do this?
It does send and receive.
I look forward to and appreciate any assistance on these two matters.
Thanks,
--Kenoli
KB6EMG
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FT-101ZD MK0, Series 05: 12 Volt D.C. Power Supply Tolerance
Does any one know the tolerance for the 12 VDC power supply? ?With the transformer set to 117 VAC (noted on the rear panel), the 12 VDC buss measures 11.77 VDC at the Lever Switch Unit PB-1975 (NO. 20) S01 (input, brown wire), D.C. supply to the noise blanker.
Thank you.
73,
Michael Smith
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Re: Fox Tango Corp. 89H2.1 IF Filter Specification and Installation Information and Schematic Needed: filter installed in an FT-101ZD Mk 0
Assuming you are using a PC log into the web page /g/Yaesu-FT-101.
You will find the Files section near the bottom of the left pane.
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Re: Fox Tango Corp. 89H2.1 IF Filter Specification and Installation Information and Schematic Needed: filter installed in an FT-101ZD Mk 0
Thanks Roger. ?How do I get to the Files section?
73,
Michael
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Re: Cabinet Cover Screws for an FT-101ZD
I see them on eBay frequently.?
On Wed, Sep 15, 2021 at 12:25 PM Michael Smith via <tw8kcabpilot= [email protected]> wrote: Having misplaced the eight top cover screws, I am looking for a set of cabinet cover screws for a Yaesu FT-101ZD transceiver.? The screws are cadmium plated steel metric, 3 mm diameter, 0.5 thread pitch, Phillips pan head painted a dark gray, of length 5 mm fully threaded.? I would like the gray painted screw heads to match the original cabinet paint.
Thank you.
73, Michael Smith N4KZO
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Alistair GM4ENF
Bruce Collins