[ARC5] Backwave

[Michael Hanz]

On 10/26/2015 11:57 AM, J Mcvey via ARC5 wrote:
> The antenna select makes a fairly loud "clunk" when selected. The cathode select relay is quiet compared to that.
> When keying the system as it was originally designed , the osc, screen, and plate B+ are "hot keyed" simultaneously  via the modulator keying relay.the antenna switch relay is also heard at the same time. I can definitely hear them, but they are not objectionably loud. I get chirp, but no backwave. The chirp appears to be function of loading/current and the power supply stability.

There is an element of relay coil interaction as well, Jim.  See 
http://aafradio.org/docs/Relay_timing_issues_-_SCR-274N.html for an 
exploration of the subject.

73,
Mike  KC4TOS