Support to tx proper cat signal to get the acom 04at tuner to tune when request cat comes to tx cat

update

i found i can tune ok by pressing tune on the amplifier acom 1200s with 04at on it and then immediately press tune on smartsdr. this works ok most of the time. there is still some glitch where when tuning completes smart sdr resets to a frequency of zero. i have to then go back to the band i just tuned on. i think this is the larger problem.

wish i could upload a video, I captured the event. thanks, MN

I know in the video, I left out the comment, that why I press "tune" on smart sdr is to give it a carrier, as the requested tx by the cat cable apparently is afsk, which with no input tone is no carrier. so the amp is moving the power level up and down via cat, and then when I press smartsdr tune button, it will then quicly tune, and turn off the tx.

sometimes it works ok, most of the time, it goes off frequency when it completes. if I lock the slice, it works ok other than having to manually press smartsdr tune, and manually raise the tune power.

this can be closer to normal if you set up a dax channel and 2khz sine generator, but starting all of that up just to tune, is harder than manually pressing the tune and moving power, so not really a great work around there in my opinion, but it simulates a better working condition.

UPDATE:

I found something interesting.

If i press tune on the acom,

it will first attempt a RTTY tune on the flex. with no signal, we know that will fail.

BUT if I immediately turn off the MOX on the flex (taking over against the cat control), here is where it gets interesting.

the ACOM will request a mode change to FM, and request a new MOX and tune properly, so long as I lock the slice so it don't go back to frequency 300khz.

so, looks like the ACOM people are letting the amp / tuner hunt modes that will give power, it was just timing out before it could find it I guess.

still the frequency jump to 300 khz in the video above is still present unless I lock the slice.

Flo,

I did try this - using a signal generator like you suggested, but it doesn't affect the outcome to jump off frequency when complete, and you may want to look at my last comment - its even easier than that now, the tone generator isn't needed in the latest acom firmware 2.9, it will retry on "OPTION' mode, and tune with no tone generator. to try it, just press tune on the amp, and then turn off MOX immediately on the SDR, and wait on it, it will then request mode option, and try again with a carrier. it still has the frequency jump away for me, but tunes by itself this way.