Almost all Motorola radios use a 50 micro-amp DC meter. Sometimes the negative end goes to ground, sometimes the positive end. The metering test set will have a meter reversal switch on it to flip the leads.
You can use almost any 50uA meter. Most of the time you're just peaking various stages, however when measuring the PA current, the meter is often connected across a low-value resistor, so neither end is grounded. Schematics for some popular Motorola test sets are also on repeater-builder, in the Motorola area, Test Set section. Depending on the model, the appropriate metering socket pins are selected and fed to the meter. Someone else will have to comment on operating the unit out-of-band. Bob M. ====== --- Richard Bessey <[EMAIL PROTECTED]> wrote: > Repeater-Builder Guru's, > I am trying to tune up the transmitter on one of my > Mitrek's and am > having no luck and alot of frusteration. > > I have the motorola manual and the cheat sheets > here: > http://www.repeater-builder.com/mitrek/pix/mitrek-tx-tuning.gif > > The question is, what do I need to measure when they > say, Meter position > 3 (Which I understand is pin 3 on the test socket) > but what do I need to > measure with my multi-meter? > Milli-volts? > Milli-amps? > Micro-amps? > Do I simply put my negative terminal for my > multi-meter to ground, and > the other test lead to the appropriate pin? Or does > my negative terminal > need to be in one of the test sockets? > > Also, I have Mitrek Model HUE1159BPR radio, which is > for 470-512. I am > trying to run it on 462/467, is that too far out of > range for this radio? > > Any word of advice would be greatly appreciated. > > Regards, > > Richard Bessey > KE7IOD ____________________________________________________________________________________ Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping
