[R-390] R390A PTO?

[David C. Hallam]

It is a R-390 PTO.  It can be used in a R-390A but the RF connector has to
be changed as well as the power connector.  The R-390 has a regulated B+
supply so the plate and screen were fed from the same point.  The R-390A
only regulates the screen supply and so uses different B+ supplies for the
plate and screen.

David
KC2JD/4

> -----Original Message-----
> From: r-390-bounces at mailman.qth.net
> [mailto:r-390-bounces at mailman.qth.net]On Behalf Of Barry
> Sent: Sunday, June 10, 2007 9:58 PM
> To: R-390-List
> Subject: [R-390] R390A PTO?
>
>
> That sure looks like an R390A PTO to me.  Wrong?
>
> http://cgi.ebay.com/Collins-R-390-PTO-Sub-chassis_W0QQitemZ290126776279
>
> Barry - N4BUQ
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