Topband: DX-100 adventure contiunued

[Charlie Cunningham]

Well, here in Raleigh, I've seen it go a good bit more than 5% high at
night. Still, I wonder if Bill could just put some higher voltage
electrolytics in there, tune for "maximum smoke" and "let 'er rip" - and
count on the key-down sag to keep the 6146s safe? ( Maybe I spent too many
years around electric  utilities) I  think that +/- 5% guideline is honored
more in the breach  than in the observance.  In the  meter business "480
high-line" was 530 VAC!

73,
Charlie.K4OTV


-----Original Message-----
From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of Tom W8JI
Sent: Wednesday, January 08, 2014 4:59 PM
Cc: 'topband'
Subject: Re: Topband: DX-100 adventure contiunued

> Tom asked about bleeder current. I didn't try to measure it but I watched 
> the high voltage decay to zero in a very few seconds when I switched it 
> off with no 6146s in the sockets.

Line voltages in the late 1950's were 115, and 117 at the time the DX100 was

made. The standard since the 70's is 120/240 at +- 5%.

This is old stuff that never actually worked as well as it could have when 
brand new. Only a small part of the problem is your line voltage. The bigger

problem is the HV supply has inadequate choke inductance. Even the 15K 
bleeders do not load the supply enough to hold voltage down. 

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