[Collins] help needed

[Carl]

Might be manufacturer related, try different ones. Ive used the 6EA8 in all 
sorts of 6U8 circuits without problems but never cared to own  S Line (-;

Carl
KM1H


----- Original Message ----- 
From: "Glen Zook" <gzook at yahoo.com>
To: "Bob and Sue Jefferis" <ljranch2010-ham at yahoo.com>
Cc: <collins at mailman.qth.net>
Sent: Sunday, January 29, 2012 8:18 PM
Subject: Re: [Collins] help needed


No problems with the 6U8A. It is the 6EA8 that causes problems in that 
particular circuit and I don't really have a clue as to why. Of course, I 
haven't spent any time learning why since I have plenty of 6U8 tubes!

Glen, K9STH Website:  http://k9sth.com


________________________________
 From: Bob and Sue Jefferis <ljranch2010-ham at yahoo.com>
To: Glen Zook <gzook at yahoo.com>
Cc: "drleborgne at aol.com" <drleborgne at aol.com>; "collins at mailman.qth.net" 
<collins at mailman.qth.net>
Sent: Sunday, January 29, 2012 6:42 PM
Subject: Re: [Collins] help needed

Glen,

Is a 6U8A close enough? I am aware of the fact that 6EA8 may not work 
reliably in the oscillator slot, but I believe the 6U8A is a little more 
robust than the 6U8 (definitely a Thanksgiving tube - Gobble, Gobble).

Bob, KF6BC
On Jan 29, 2012, at 12:39 PM, Glen Zook wrote:

> Check the tone oscillator, a 6U8. There has to be a tone present before 
> you can tune the transmitter or to send CW.
>
> Replace the tube, if bad, only with a 6U8. Although the 6EA8 can be used 
> to replace the other 6U8 tubes, the tone oscillator often will not work 
> properly if a 6EA8 is substituted.
>
> Glen, K9STH Website: http://k9sth.com
>
>
> ________________________________
> From: "drleborgne at aol.com" <drleborgne at aol.com>
> To: collins at mailman.qth.net
> Sent: Sunday, January 29, 2012 9:25 AM
> Subject: [Collins] help needed
>
>
> Dear collins aficionados: I am in the process of recondicion a 32-S1 ( I 
> am no expert) Voltage, resistance and signal
>
> tracing are Ok and adequate signal gets to the grids of , power tubes, but 
> can not obtain grid meter excitation nor
>
> can I get power out, I have changed a burned resistor, and measurements 
> and close inspection look good.
>
> What could be hiding there, what should I look for ?. Thank you. KI4JRY 
> martin
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