Radius M1225 TX issues

[ve3wva]

Hi guys
I am looking at a Radius M1225 for the local fire department...power supply on the bench is a 30 amp Astron switcher... 95% of the time, there is no TX audio or power out...the other 4% of the time, there is 40 watts out with a wicked hum on the signal and almost a 10 amp draw (the analog meter on the Astron is not very accurate)...1% of the time (I saw it one time) there was a current draw and no TX... it is not the mic for two reasons... we swapped mics with a known good plus when it is not working and we change the channel to a non-TX channel (like weather) we get the obligatory noise that tells you TX is inhibited... for comparison, I have my trusty Yaesu FT-8800 hooked up next to it, same cables same power supply, set to same power level, nice clean TX audio..
I am looking at it on my service monitor when it does TX, the wave form looks terrible... trying to get a picture of it (my service monitor is an old HP 8924E with no screen capture) but when I am set up to take a picture it does not TX!
unmodulated the waveform from the Yaesu is very nice, smooth beautiful...On the Radius, you can't tell the difference between modulated and unmodulated; the waveform looks about the same with the distortion...
JUST GOT IT TO TX...I am attaching pics... both are UNMODULATED; the one on 147MHZ is the Yaesu on our local repeater input; the other is the Radius on the local fire frequency...

Just looking for a little guidance before we send it away for service...That is probably what will happen...
Has anyone seen this before and can offer some advice?

Thanks so much es cul

VE3WVA Rusty

 

[Durandal1224]

Send it away for service? that thing needs to be replaced.

 

[SteveC0625]

Send it away for service? that thing needs to be replaced.

I think you're on to something there...

M1225's are priced $100 to $200 on the used market and I suspect the actual selling price for most of them is $100 to $125, regardless of features.

*IF* Motorola still works on these radios, it will probably cost well in excess of $200 to fix it.

IMHO, it's time for a replacement, especially since this radio is used in the fire service. Sell it as a tech special to a ham somewhere and replace it. If they insist on another M1225, snag one off the bay. If not, you can pick a nearly new CM300 with all the same features for around $200. CDM prices are similar or even less.

 

[Project25_MASTR]

1225's are long since out of service. You can no longer get parts for them. The CM/PM line is still under support but out of sale. I was buying PM400's for less than $100 a piece last time I bought.

Sent from my Venue 7 3730 using Tapatalk

 

[cmdrwill]

Bad power supply.

 

[ve3wva]

THANKS!

Thanks for the advice, guys! Much appreciated!

Rusty

 

[trlrdrdave]

Try turning the power down about half way through the tuning software and see what happens