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Author Topic: restoring tubes  (Read 3103 times)
W9FIB
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Posts: 739




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« Reply #15 on: June 20, 2014, 05:01:10 AM »

A quick check on the Mouser web site shows the cheap and common Jones plugs rated at 250 Volts. There are plugs rated to 1000 Volts, but are less common and expensive.
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KA5PIU
Member

Posts: 446




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« Reply #16 on: June 20, 2014, 07:00:17 AM »

Hello.

First off, the Full sized, NOT mini, Jones plug, is rated to 250VDC, pin to pin.
BUT, that is NOT what I said.
The Russian unit IS an external amplifier!
Solid state power supply?
You need to feed it 12 volts with 14 amps just for the filaments.
The Russian D amplifier is a modular unit used in Russian designed radios that provide all of the voltages needed from 12 volts.
So, the pi circuit is being used, what about the high voltages?
That is what the UHF connectors do, they carry both whatever signal and the high voltage.
This is called the ''Russian Stinger".
https://www.youtube.com/watch?v=gBEr2XMPI1E
I do know of any videos in English of the Russian module and really have concerns over people installing them, some guy got killed!
And, yes, he was a ham!
I do NOT agree with the average ham or CB type "play" with such a device unless they are fully informed.
There are voltages that can kill!
A UHF connector can carry 1000+ volts but is rated to only 500.
Modern Telflon connectors do better at high voltage.
But, we went from cheap tubes (813) to 6146?
TV sweep tubes are getting very expensive, so I tried the sweep module out of a multi standard TV/Monitor CRT unit.
I watch what is being done.
I am not the engineer, I just watch, learn, and copy, and I will be the first to tell you that.
I sort of understand the theory, but need to look at schematics, parts values, etc.
And, like it or not, I am following the lead of CB types!
Most do NOT want to be hams!
Look at the attitude of hams, they are filthy and in every one else's business.
Look a Dayton and the cheap Chinese radio threads for proof of that.
But, I can only be totally honest, I do not fully know what I am doing.
I can sit and watch, and learn, and replicate.
The chance that I could stuff a 6146 into an FT-101, without an example in from of me to copy, is zero!
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K8AXW
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Posts: 3858




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« Reply #17 on: June 20, 2014, 07:09:13 AM »

PIU:  
Quote
Look at the attitude of hams, they are filthy and in every one else's business.

May we assume this includes YOU?
« Last Edit: June 20, 2014, 07:53:32 AM by K8AXW » Logged
G3RZP
Member

Posts: 4619




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« Reply #18 on: June 20, 2014, 07:24:27 AM »

So how much is your Russian 813 and socket? I wouldn't call $49 expensive for a matched pair of 6146Bs......that don't expensive and not so easy to get sockets.

There's also the 'little' problem with the 813 of the input capacity being so different if you want to use the FT101 tank circuits.

Changing to 6146s in the FT101 has been well written up in a number of magazines....

The 813 works perfectly well on SSB if suitably biased and with suitable power supplies, but that applies to many tubes. They work well in GG AB2 as well if you don't want too much gain.
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