[arm-allstar] FT-2900R COS Signal

[Jim Kinter Jr.]

If you cant get to the COS signal (many newer radios its inside the 
chip with no pin), you could try this:
https://www.youtube.com/watch?v=QopvHGM-9_k

It detects output (when radio unsquelches) on the ext spk line and 
triggers the transistor to ground the PTT/trigger a relay.

I will be using this circuit when I tie 2 FT-2800's together with a 
URI  to make a VHF repeater.

73
Jim


At 04:02 PM 6/28/2017, \"derrick keating via arm-allstar\" wrote:
>Hey just wondering I would need to interface my ft2900 to allstar thanks
>
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73
Jim Kinter, Jr. K5KTF
Cedar Park TX
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