Re: New to me FT-101B
Well, I finally have all the initial parts to begin the process of the resurrection of my FT-101B. The Heathkit VTVM will be here today and I will get that inspected, cleaned up, and
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Butchie_T - KA?WWT
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#601
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Re: FT-101ZD intermittent reduced output on 80m only
Jacques, your guess was correct, pretty clever thinking.
Thank you for replying to message with your help.
*C9:*
It was labeled NTK 112K, only have a multimeter and it measured open (no
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KQ4NUO
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#600
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Re: FT-101ZD intermittent reduced output on 80m only
Hi Alex,
Call it an educated guess if you like, but I believe that C9 in the output
tank section, is defective (ceramic, 100pF, 3kV rating cap).
73, Jacques, VE2JFE in Montreal
SYMPTOMS:
-
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Jacques Fortin VE2JFE
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#599
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FT-101ZD intermittent reduced output on 80m only
SYMPTOMS:
- Full output power (sometimes) on 80m only.
- Reduced output power only at ca. 50% intermittently (sometimes) and on 80m only.
- All other bands operate normally.
Otherwise the transceiver
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KQ4NUO
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#598
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Re: Test Equipment Suggestions
Thanks for your suggestions Bruce.
I have both a DVM and an old analog Simpson 260 VM. I love analog meters. An O’scope is the one thing I don’t have but I do have access to one. I have use
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Butchie_T - KA?WWT
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#597
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Re: Test Equipment Suggestions
And most inexpensive digital O’Scopes have a built in signal generator!!
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Bruce Collins
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#596
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Re: Test Equipment Suggestions
#2 an inexpensive digital oscilloscope and learn how to use it.
#1 a decent digital volt ohm meter.
It is amazing what you can do with those two pieces of test equipment.
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Bruce Collins
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#595
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Re: FT-101ZSD Circuit Schematic
This is what I found in a Japanese 101ZD manual:
I uploaded a much better version in the files section!!
Erwin, PA3DAF
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PA3DAF
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#594
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Edited
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Re: Test Equipment Suggestions
Thanks Tom,
I have all of your recommended items. Appreciate the encouragement. ?How did you use your VNA?? I have one, never even figured about using it.
I’m glad I asked a you
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Butchie_T - KA?WWT
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#593
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Re: Test Equipment Suggestions
I just went through the same exercise and recommend: good internet connection to reach this group, good soldering station , solder wick,? non-conductive alignment tool set, bright light (with
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Tom ai4th
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#592
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Test Equipment Suggestions
To the greater group,
As I begin the project of bringing my FT-101B back to life, I would like to know what one piece of test equipment, other than a multimeter, would you suggest I have in my
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Butchie_T - KA?WWT
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#591
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Re: FT-101 RF Board
Hello Joseph,
I have replaced the PB-1077B on my FT-277 with the later PB-1181. You may need to perform a realignment of the radio afterwards.
I have placed a file into the Files section, of the
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Peter Roberts G4DJB
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#590
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Edited
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Re: FT-101ZSD Circuit Schematic
In my case I just got one a few weeks ago.
It has physical taps for 110 & 117 but, when measured/rung out, it seems they are not connected internally.
Thus, I'm using an auto transformer to get the
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KQ4NUO
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#588
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Re: FT-101ZSD Circuit Schematic
The real fear with the S model is that the power transformer’s primary is only wound for 100vac. There are a number of people stating that there are no other primary taps on the S version.
That
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Bruce Collins
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#587
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Re: FT-101ZSD Circuit Schematic
Yes, the ZD & ZSD are basically the same radio except the PA section is a single bottle in the ZD. So the PA section is different. I have the ZD Service Manual but don't know if they even printed a
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KQ4NUO
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#586
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FT-101 RF Board
Hi Everyone,
I am currently restoring a 1st generation ft-101 (actually a ft-277...) and while smoke-testing it I found that the RF board may need to be repaired or replaced; Therefore, I have two
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JsF4JVO
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#585
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Re: FT-101ZSD Circuit Schematic
https://www.qrzcq.com/pub/RADIO_MANUALS/YAESU/YAESU--FT-101ZD-Service-Manual.pdf
is the service manual for the ft-101zd if that matches the zsd I don't know.
maybe someone else can advise the
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John V. VA3DPZ
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#584
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Re: New to me FT-101B
Thanks Bruce.
The cap replacements should be here by the weekend. I’ll start with the replaceable cards first then tackle the two large caps after I take some more up close and personal pictures of
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Butchie_T - KA?WWT
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#583
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Re: New to me FT-101B
OK. Lots of stuff to look over.
most of these in good condition look like new from the bottom!
Old Electrolytic capacitors can be troublesome though.
Sometimes the bias supply filter caps can be going
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Bruce Collins
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#582
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Re: New to me FT-101B
Bruce,
Thank you for your reply. My answers below:
USB/LSB/Tune: all three positions, no microphone, PTT to MOX only. Bias pot to minimum and that is the lowest reading I can get to.
I have been
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Butchie_T - KA?WWT
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#581
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