How are you keying the 847?

What I've found is that the Tx Audio is only sent from the "port" that keyed the rig.� Key with TRS and that's where the audio is sensed.� Same for the DIN port for FM.� But Key it with CAT and, well, it's looking at the front panel Mike for a signal, which makes zero sense to me.�

If you don't have the audio path aligned with the keying, the audio that remains is down something like 20 db.� There is a little that bleeds through, but not much.

Greg� KO6TH


Dave K?EKL wrote:

I've been tracking Greencube all week and while I can hear the bird well and decode packets but I'm having very little success with transmit.

Out of at least 100 attempts I think I've had/seen 4 replies. I think I should be seeing my own packets being retransmitted by the bird but I do not.

�

I'm using an FT-847 with the audio interface connected to the TRS port for AFSK. I've used the same radio and interface for terrestrial FT8 on 2m and 432 with no problems.

�

The antenna is an 11 element m2 yagi which, along with an 8 element m2 2 meter yagi, is the same array on an az-el rotor that I use for other satellites.

�

I'm running the new version of SatPC32ISS, UZ7HO's SoundModem V.005b and GreenCube Digipeater V0.15. Doppler tracking seems stable and the received audio is centered around 1500hz on the waterfall.

�

I've tried a couple different sound cards and experimented with transmit audio level thinking that I might be overmodulated. I've also tried power levels from 10 to 100 watts and I've tried adjusting the TXDelay ins SoundModem from 400 ms to 1000 ms.

�

At this point I am at a loss and don't know what to try next. I'd be grateful for advice from the group.

�

de K0EKL EN37

�


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