{Collins} Re: Diode Rectifiers 516F2



Bill:

I prefer diodes. It's just that I want them to work exactly like tubes :)

I've been messing with tubes since 1949. I couldn't afford them then,
either.

John Painter
W5LQS
ex-W4RIJ, -W7CEQ, -W9VKE, etc., etc.

----- Original Message ----- 
From: "wglevy" <levyfiles@xxxxxxx>
To: "Collinslist" <collins@xxxxxxxxxxxxx>
Sent: Wednesday, January 26, 2005 10:27 PM
Subject: {Collins} Diode Rectifiers 516F2



OK
Lets start a string.
I have been reading all this info on dropping resistors in 516F2 supplies
while reading all the KWS1 stuff.
I bought my first used ex MIL KWM2A in 1974. Used it with a 516F2. Bought
diodes for it from Mr. Dahl. Never put in dropping resistors. Still working
today. Changed 3 of the 6u8s for 6EA8's. Not much else went wrong in 30
years. Sent it off to Dennis in 1991 to tweak.

So all of a sudden the wise men say to not use diodes without dropping
resistors and furthermore to turn the thing on with a Variac because it was
built to run at 110 not 115/20.

Gentlemen. Collins created the first diode mod. Its run on whatever voltage
I ever gave it. Field day, Ranch, City, Country. For 30 years.

Sure its getting old. Someday I will replace the caps on the radio and power
supply. But surely they should fail first?

Perhaps I am missing something. I ain't a tech or an engineer but I have
been at this tube stuff since 1961 and took my Extra from the FCC on tube
stuff and 20 wpm. I am not a kid and I don't get all the blah blah on Diodes
and Variacs.

So I guess I am saying " What? Me Worry?"

Please explain in laymen terms your opposite opinions.

73, Bill N2WL


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Nets: Tues: 3.805 Mc-2000 Central / Thur: 3.875 Mc-2000 Central
Fri: 3.895 Mc-2000 Pacific / Sun: 14.263 Mc-2000 UTC
1st Wed (of the month) AM Net 3.880 Mc-2000 local (ET, CT, MT, PT)
Sun AM Net: 29.050 Mc-1200 Central






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