[ARC5] Backwave

[WA5CAB at cs.com]

They'll all work just fine if you put the original relays back in.

In a message dated 10/25/2015 20:11:59 PM Central Daylight Time, 
kb8tad at gmail.com writes: 
> Hi ARC-5ers,
> A friend and I have been experimenting with getting a BC-696A back on the
> air.  The transmitter had already been modified per standard QST design,
> with the oscillator running at all times, the cathodes keyed and, of
> course, the relays removed, so no break-in.  With good band conditions, we
> experienced  backwave.  What have you done to limit or solve backwave from
> an ARC-5 or SCR-274N transmitter on CW?
> 
> Has anyone tried keying the oscillator with, say, a solid state switch 
> such
> as a high-voltage NPN or FET along with a mechanical relay for the 
> cathodes
> under the theory that the solid state switch would power the oscillator
> just slightly ahead of the PA?  (Assuming that the difference would be
> enough to avoid chirp)
> 
> Let us know your voice of experience.
> 
> Tnx de Rich KB8TAD

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480