Took ownership of these radios.
Question: are switched power supplies any use in testing the handhelds or are batteries a must?
1. HANDIE TALKIE FM RADIO MADE BY MOTOROLA MODEL: H25JBFSIB4BN Awaiting antennas.
1.1 MOTOROLA privacy plus 750
2. MOTOROLA classic
3. MOTOROLA HT90
4. MOTOROLA RADIUS GP300
5. MOTOROLA Radius P200
If you are looking to do initial testing to determine condition, a power supply should work fine. As long as the polarity and voltage settings match what the battery would provide. Actual performance may be affected when using a SMPS. Personally, I have several adjustable linear supplies that are on my bench, works great for anything.
Radios + Tubes + Scopes + Cars= Nothing better!
Very good. Will get going then! Was previously unsuccessful using a switched PSU with a tube AM kit.
@stevokeano Depends on the construction and setup of the radio. Tubes run on higher voltage so there is typically several supplies. Filaments, plate, screens, bias, could all use different supplies. If one is missing or not correct, they setup won’t work. Small AM radios like that are configured minimally unlike the larger sets.
Radios + Tubes + Scopes + Cars= Nothing better!
Both MOTOROLA RADIUS GP300‘s systems check out; but, I fear they are nolonger programmed. All 8 channels give more than 3 beeps. The service manual mentions using an XT PC! And I thought getting ICPROG working was tough. Anyone know this unit have any clues? This is probably a discussion better placed on a HAM site…
Batteries showed up today. Also found the original programmed frequencies.
And a how to program the GP300 using the original DOS program and serial setup.