Hi Bob,
Thanks for the return...
This agrees with the little bit of info that I found in the Collins list
archives. The addition of a 6AK6 as an untuned class A buffer amp (I'm
repeating what was written by others...) to boost the output of the PTO
(1.6 to 2.0 Mhz) so that it can drive a transmitter oscillator... The
info I have suggests that the output can be fed directly to the
transmitter xtal socket. This configuration was said to have appeared
in a 1949 Collins sales brochure showing a 70E-8A PTO, etc... I'm hoping
someone will have one laying about in their collection that also won't
mind sharing a digitized copy, since others have also expressed interest
in this mod...
TNX es 73's
-Vern N7GTB
On Sun, 2003-02-02 at 20:53, R.J. Mattson wrote:
> Hi Vern,
> I believe the 70E-8A PTO in the 310C has a 160m output.
> It is doubled in the 6AG7 (V101) tuned buffer.
> 73 Bob Mattson...W2AMI
>http://www.qrz.com/callsign/w2ami>> ----- Original Message -----
> From: "Vernon Van Zandt" <[email protected]>
> To: "collins" <[email protected]>; "collins2" <[email protected]>
> Sent: Sunday, February 02, 2003 12:42 AM
> Subject: [Collins] VFO Schematics
>>> Greetings.
>> Anyone here happen to have the schematics for a Collins 310C
> VFO/exciter, and wouldn't mind sharing them?
>> Also, sometime ago there was a question posted regarding a mod that
> allows the VFO to be used for 160 meter operation. Something along the
> lines of adding a buffer amp circuit...? Can anyone can shed some light
> on this, or even details (schematic maybe?) on how it is connected,
> etc..?
>> (Sorry about the cross-post, but my question would be verbatim on both
> anyway...)
>> Many thanks,
> N7GTB
> Vern
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>http://www.collinsra.com>