[ARC5] Netting Switch (Was: Whistle Stop Tiuning)

[David Stinson]

----- Original Message ----- 
From: <WA5CAB at cs.com>


> Not without non-standard wiring and modifications to the receiver rack.  A
> relay or relays in the receiver rack (one per receiver) disconnects the
> receiver audio output from the audio buss and connects the buss to the 
> side tone
> line.  What's on the side tone line depends upon whether the transmitter
> mode switch is on Voice or on CW or Tone.

You can provide these functions using just the cabling to the six-pin
(PL-151) connectors on the receiver rack.
I open the wire carrying the sidetone (pin 1) or pad it down a lot- it's 
loud.
A switch that opens the lead to pin 5 (keying) on the PL-151, which controls
those muting relays in the receiver rack is, in effect, a "Netting" switch,
allowing you to "zero beat" your transmitter.   Use a second PL-151
with leads from pins 5 (keying) and 6 (+24 VDC buss) to an external
24 VDC relay coil and you have a keying relay for an external amplifier.

73 DE Dave AB5S