Astro Spectra audio problem

FMROB · Post by **FMROB** » Tue Jun 13, 2006 9:05 pm

Hello all,

Don't have a service manual, But what I do have is a UHF astro spectra that TX's and makes 40+ watts, but has no audio and makes a kinda am tuning whine during tx.

Any idea where to start or what module to start with.

Thanks, Rob

RocketNJ · Post by **RocketNJ** » Wed Jun 14, 2006 3:17 am

Is this radio all original? Or changed from dash to remote or vice versa?

How about is the deviation alignment mode. Does it generate the internal tone?

FMROB · Post by **FMROB** » Wed Jun 14, 2006 4:27 am

This was a hacked together radio.

It was an original 450mhz data spectra and a q split astro spectra.

I have done this before with no issues, I will test the internal tone mode.

The Q spectra is a dash mount, and will remain a dash mount.

RocketNJ · Post by **RocketNJ** » Wed Jun 14, 2006 1:33 pm

I believe the data radio RF and Astro RF boards are different regarding audio routing. Maybe someone has access to detailed service manuals to confirm?

jmr061 · Post by **jmr061** » Wed Jun 14, 2006 4:15 pm

The audio parts would be contained in the astro spectra boards which were in a q split radio. The spectra data radio should have supplied the PA, vco and front end. At least this is my understanding of the post. Did the Q split have audio before the swap?

My guess is the audio amp took a dump. I have a command board with a bad one as well.

Jason

FMROB · Post by **FMROB** » Thu Jun 15, 2006 3:50 am

Jason,

I don't recal, but I don't think that it had any problems.

I may be calling you ref some new boards.. Thanks, Rob

jmr061 · Post by **jmr061** » Thu Jun 15, 2006 6:14 am

Take another working astro spectra that you have and swap the command board and see if that is the problem.

Jason