Hi,
I'm about to purchase a used Icom A200 and a PS Engineering PM1000 intercom. Neither of these come with a wiring harness and so I will have to wire it up myself.
I have had some success with voice activated intercoms on the Stearman using an intercom designed for high noise environments such as an open cockpit. It worked but was still rather temperamental and so I am going to go with pushbutton activation of the intercom on my Charger.
Regarding wiring up such a system, can someone verify that I am going about this correctly:
1. The stick in each cockpit will have two switches, both momentary contact. One for intercom, one for transmit.
2. Switch #1 (Intercom Activation) will be a NO momentary contact SPST switch which is placed inline to the "Mic Audio Hi" line coming off of the intercom.
3. Switch #2 (Radio Transmit Activation) will be a NO momentary contact SPDT switch. Pole 1 is wired inline to the "Mic Audio Hi" line coming off of the intercom. Pole 2 is wired as the standard PTT depicted on the intercom wiring diagram.
Does that sound about right?
Thanks,
Glenn
I'm about to purchase a used Icom A200 and a PS Engineering PM1000 intercom. Neither of these come with a wiring harness and so I will have to wire it up myself.
I have had some success with voice activated intercoms on the Stearman using an intercom designed for high noise environments such as an open cockpit. It worked but was still rather temperamental and so I am going to go with pushbutton activation of the intercom on my Charger.
Regarding wiring up such a system, can someone verify that I am going about this correctly:
1. The stick in each cockpit will have two switches, both momentary contact. One for intercom, one for transmit.
2. Switch #1 (Intercom Activation) will be a NO momentary contact SPST switch which is placed inline to the "Mic Audio Hi" line coming off of the intercom.
3. Switch #2 (Radio Transmit Activation) will be a NO momentary contact SPDT switch. Pole 1 is wired inline to the "Mic Audio Hi" line coming off of the intercom. Pole 2 is wired as the standard PTT depicted on the intercom wiring diagram.
Does that sound about right?
Thanks,
Glenn
