Today's Message Index:
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0. 09:45 AM - What's Your Contribution Used For? (Matt Dralle)
1. 05:10 AM - Re: ptt isolation (Chuck)
2. 07:13 AM - Re: ptt isolation (Robert L. Nuckolls, III)
3. 12:37 PM - Re: ptt isolation (Robert L. Nuckolls, III)
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Subject: | What's Your Contribution Used For? |
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Subject: | Re: ptt isolation |
I had a conversation with the vendor and was told that relays are the only
way to have PTT Cutout.
I am putting the FL 760 in my panel and I didn't want to use relays so I
developed a way to avoid using relays and still accomplish the same results.
It requires using DPDT Momentary Push Button Switches for both Pilot and
Co-Pilot/Pax. I paid about $20-$25 for each of the switches.
Caveat: Buyer Beware! I have not finished installing it in my panel yet so
the circuitry hasn't been tested and confirmed, however, I took the
schematic to an avionics shop for their review and they confirmed that it
should work.
I'm attaching the schematics and info on the DPDT switches I used.
Good Luck.
Chuck Gauthier
Cleanex N183SX
(Sonex with a Corvair engine)
Cell: (360) 901-7934
<mailto:ChuckGauthier@comcast.net> ChuckGauthier@comcast.net
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Subject: | Re: ptt isolation |
At 07:36 AM 11/17/2015, you wrote:
>
>What relays are recommended for pilot copilot ptt isolation on flightline
>fl760 transceivers. Thousands of relays are shown on suppliers web sites
>making it hard to pick out a suitable one.
>Thanks in advance.
>Eugene Pilipanko
Joe's advice is solid but I'm curious as to how
these would be used in your system. Can you
share a link to the wiring diagrams that show
the relays?
Bob . . .
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Subject: | Re: ptt isolation |
At 07:36 AM 11/17/2015, you wrote:
>
>What relays are recommended for pilot copilot ptt isolation on flightline
>fl760 transceivers. Thousands of relays are shown on suppliers web sites
>making it hard to pick out a suitable one.
>Thanks in advance.
>Eugene Pilipanko
Gene,
When you say PTT isolation, what functionality
are you seeking? The radio has two microphone
inputs that are simultaneously active. This supports
the intercom functionality.
When you push the pilot's ptt, are you wanting to
quiet the copilot's mic, disable the copilot's
ptt, or both.
When the copilot's ptt is activated, do you want
that source to have priority over the radio . . .
in other words, disable the pilot's ptt, microphone
or both?
Are you intending to use the built in intercom
function?
Bob . . .
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