The TS 64 o/p is an open collector that goes to ground when it decodes. You may need a pull up resistor on this line. I dont know what he RTCM wants to see for an input. Also, to get the decode to do anything you need to ground the "mic hang up line" on the TS 64. Jon VA3RQ On 4/1/2014 12:03 PM, Bryan Fields wrote:

I'm trying to get this working and can confirm I have the white audio mute wire connected to the RTCM PL logic line. No matter if I toggle it normal or inverted it does not work.

Has anyone interfaced with this before?

Other than this it's working :)