R-4C Low audio output
Just obtained an R-4C from eBay (I don¡¯t recommend this as a source!). The radio appears to have Sherwood mods (see photo). The radio works on all band, but with the RF Gain on Max, and the AF Gain
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Malcolm G4TJK <charlie.porter1@...>
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#76790
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Re: What's the best way to learn tube electronics?
Boy did you hit a nerve asking about learning Vacuum tubes.
I did not know there were still dinosaurs around.
Remember first The UK uses Valves not Tubes.
My laugh for today
Don
By
Don Humphrey
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#76789
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Re: What's the best way to learn tube electronics?
WOW! What a response!
Thanks for all the collective wisdom, and the suggestions.
I've jumped on a few web sites and admired the author's workshops and their projects - especially Dr. Greg
By
M0HKG - Martin
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#76788
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Re: Soft Rubber Eqp't Feet
Try McMater-Carr...
They have a multitude of various rubber feet and bumpers available.? Not the cheapest around, but a large variety.
A lower "durometer" number means softer, higher indicates
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Alan - W5ARM
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#76787
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Re: Dumb question of the day.
Paul,
Thanks for sharing the information about the Fluke 8060a. I also have an 8060a and would like a copy of the instructions and bom for replacing the electrolytic caps.
73,
Bob
By
rls19
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#76786
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Re: Soft Rubber Eqp't Feet
Just looked on Amazon...lots of "soft rubber feet for Cutting
Board"....maybe depends on whose "soft" tho
Jim
By
Jim Tibbits
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#76785
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Re: Dumb question of the day.
Still have my 77 from the days at Digital, where in the location closing
they said "you can take your tools with you if you want". Works fine (the
intermittent displays seemed to come with the 8x
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John K5MO
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#76784
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Re: Dumb question of the day.
Now that I'm back at my shack, I can attest that the 70 series meter that I have is the 77. It's in excellent shape and is still holding its calibration, as far as I can tell without having a
By
Steve Wedge, W1ES/4
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#76783
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Re: Dumb question of the day.
The speed factor that I look at for DMMs is how quickly the beep reacts when doing continuity testing. The Flukes seem to be mostly pretty fast. Cheaper DMMs (yes I have some of those too) less so.
By
Jim Shorney
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#76782
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Re: Dumb question of the day.
I have a WV-98C also. Love that huge meter. The other one is I think a WV-97A which is the usual form factor for VTVMs of that type. It works too but doesn't get used as much as its big
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Jim Shorney
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#76781
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Re: Dumb question of the day.
I like the 8050A a lot too.? I also like the 8842A.? Wish it had the AC
option.? Seems like I've read where someone made a clone of the AC
option board.
For tube gear, my go to meter is the
By
Stan Gammons
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#76780
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Re: Soft Rubber Eqp't Feet
Okay, apparently a lot of people are unfamiliar with the undercarriage
on Vibroplex keys :-) See the 1st picture attached. From L-R those
are the bottom sides of an Iambic, a Vibrokeyer, and a
By
Lyndon VE7TFX <lyndon@...>
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#76779
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Re: Dumb question of the day.
I have a Fluke 17B (Chinese-made and for foreign markets) that I bought new on eBay a few years ago. I found the delay in getting a stable reading to be something that really bugs me.
I have an old
By
Steve Wedge, W1ES/4
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#76778
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Re: Dumb question of the day.
Nice find on the Fluke 289. Even on the used market they're quite expensive. RCA WV-98C is the go-to VTVM here.
Triplett made a really nice FET analog VOM, the model 603. It's roughly the same
By
Paul Christensen
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#76777
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Drake AA-10 is sold
Drake AA-10 is sold
Gary
W0DVN
By
Gary Follett
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#76776
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Re: Dumb question of the day.
Ralph,
Sent to your QRZ e-mail address.
Paul, W9AC
Sent: Sunday, March 17, 2024 12:51 PM
To: [email protected]
Subject: Re: [DRAKE-RADIO] Dumb question of the day.
I have two of
By
Paul Christensen
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#76775
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Re: TR-3 No Transmit
I assumed that you are getting relay closure, if you're getting idle current. A bad 12AX7 can stop things, though. If it's running really abnormally hot, look around that circuit for shorted
By
Steve Wedge, W1ES/4
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#76774
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Re: Dumb question of the day.
I have two of the 8060A but have not used them in a while.? Usually use the newer auto ranging ones .? Could you send me the file about replacing the capacitors so I will have it if my 8060 fails I
By
Ralph Mowery
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#76773
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Re: Dumb question of the day.
The 8050A from the same era is a nice bench meter. I love mine. If you get one with the battery option it is portable but then you have to deal with NiCad maintenance. I found a 289 dirt cheap at a
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Jim Shorney
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#76772
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Re: Dumb question of the day.
The 8060A was quite an achievement for a 1980s DMM design. After graduating from college, I worked for RKO Radio in Chicago. We depended on it for a litany of precision audio measurements.
By
Paul Christensen
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#76771
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