First thing is to get a wattmeter and see if the radio is outputting any power. A simple CB wattmeter will work here since your not making qualitative measurements. If the radio is outputting then you need to figure out if it's on frequency and is the handset functional? Swap the handsets and check again, if you still don't hear anything you'll need to get a frequency meter.
The PRM-34 test set used to be called the "God box" by radio techs because it could measure forward and reflected power, field strength, frequency and it had a limited signal generator in it that would put out a low power signal every 5 mhz that you could check your receiver with. They're about half the size of a shoebox.
Kurt
KG6KMJ
Ok, ill tell what i got:
My prc9 is aligned on all rx chain, handset is ok (i have 2 and both checked in a sem35), contacts and wires form handset to transformer T1 are ok (checked), 1.5v ok(checked), 10khz tone injected, transformer is ok. The problem is that L4 (modulation transformer) has the primary blown, so V2 (modulator) is not getting any B+ in transmision, so there is not modulation so there is not AFC action at all so, transmitter is off frequency also, but it stills presents 1w over 50ohm load (diamond wattmeter with dummy load) so V3 (power oscillator) is ok.
I have L4 out of its can, in fact, one coil of the primary is opened, but i guess is a 100000000000000 turns primary with very thin whire jajaja, i cannot fix this coil with this **** of bobin.
I need to know if there is any place to buy another one or if it is possible to decrease the primary inductance in order so that i can wind and fix the primary, but with lower inductance... i dont really know how it would affect the modulation.
Thanks you all.
