I see some weird behavior from time to time that I can't quite figure out. This is usually when I've done something dumb and caused a soft fault on my amp and it goes into Standby, but also on occasion when I get a hard fault and the amp shuts down. I'm actually not sure if this behavior is cause or effect of the amp faults in the first place. So basically:
- The amp trips and goes into standby or shuts down, I power it back up (if required) and/or put it back in operate mode and status is normal
- I hit tune in Thetis, radio TX relay clicks as normal, Thetis goes into TX
- I can see from the Amp display and s/w the Amp is seeing RF from the radio at the usual level, but it is not producing any FWD power (Amp and LP-500 meter shows zero Fwd)
- If I put the amp in Standby, and tune in Thetis I do see drive power on the meter - the amp is passing through drive RF as expected
- Power cycling the AMP does not help
So when this happens, the radio is putting out drive, but seems to be also preventing the amp from TXing. I don't think this is a PTT line problem as the amp will give me a soft fault if it sees RF without PTT being closed and I'm not seeing this. I am using CAT in Thetis to communicate to the amp, but disabling/re-enabling CAT when the problem occurs seems to have no effect.
Any clues?
Cheers - Chris
VK3ICM / AG5RR