[Hammarlund] Hello list - HC-10 and 6AU6s.

[Carl]

The 75A series has a pair in the PTO

Carl


----- Original Message ----- 
From: "David Wise" <David_Wise at Phoenix.com>
To: <kgordon2006 at frontier.com>; <Hammarlund at mailman.qth.net>
Sent: Tuesday, April 03, 2012 3:57 PM
Subject: Re: [Hammarlund] Hello list - HC-10 and 6AU6s.


> The R-390A uses the 5749 (industrial 6BA6) for its VFO and BFO.
> 
> Dave Wise 
> 
>>-----Original Message-----
>>From: hammarlund-bounces at mailman.qth.net 
>>[mailto:hammarlund-bounces at mailman.qth.net] On Behalf Of 
>>Kenneth G. Gordon
>>Sent: Monday, April 02, 2012 12:39 PM
>>To: Hammarlund at mailman.qth.net
>>Subject: Re: [Hammarlund] Hello list - HC-10 and 6AU6s.
>>
>>The 6AU6 is routinely used in oscillators (especially VFOs), 
>>while I don't 
>>know that I have ever seen a 6BA6 used as such. Perhaps the 
>>differences 
>>are only inter-electrode capacitances and the transconductances under 
>>identical conditions are the same, or close enough to it.
>>
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