?OK.....I would caution that the parts are IN A CIRCUIT.

So things are more complicated than when they are out, unconnected to anything else.

Most of the rig is common emitter amplifiers, which are arranged in forward and backward pairs, making a bidirectional amplifier.

If I remember properly, one set gets energized with the RX line gets +12 volts;? the other amplifier instead gets energized when the TX line gets the +12volts.

Trying to measure resistances in connected circuits is more work than I'm willing to do, because you have to take into account everything in parallel all the way around the various loops around each component --- which could include transitors (effectively, diodes) and real diodes, and transformers and other resistors.

What is more useful generally to me is function testing:

1)? ?we suggested a simple way to do that for large sections by simply looking for specific oscillator signals.

2)? ?the alternative is to look for proper voltages in each common emitter amplifier.? ? Take Q1 for example ---?

it is fed through a 220 ohm resistor.? ?On one side should be nearly +12 volts, and on the other side would be a lower voltage, allowing you to calculate and approximation of the??collector current via Ohms law.? Because of the Diode D1 there, the actual collector voltage should be 0.6 volts lower than what you measured on the transistor side of the 220 ohm resistor.?

The base voltage is provided by a voltage divider from the collector, with 1000 and 2200 ohms and generally the base current isn't as large as the voltage divider current, so the voltage on the base should be somewhere at or below about 1/3 of the collector voltage.? ?

The emitter voltage should be right on 0.6 volts LESS than the base voltage, and the dc part of that flows through a 100 ohm resistor, so again, you can calculate the current through the emitter--- which should be almost identical to the colleector current.??

If the emitter were at 0 volts and the collector at 12 volts that would mean the transistor is completely non conducting....probably not a good sign.

If the collector were at 0.2 volts higher than the emitter, that would mean the transistor was in full saturation.....not a good sign either, something much worse is going on....

If the base isn't exactly .6-0.7 volts higher than the emitter, and the circuit is powered, something ver bad is wrong with the circuit or the transistor.

IF the ciruit is an oscillator, it becomes much harder to measure becaure there is RF running arund and it may confuse your voltmeter, or your voltmeter leads may foul up the oscillator; so easier to check initially by hunting for their signal with a sniffer (insulated) wire.? ?

Others may have a brighter way to test than that, but that is sorta what I do.? ?I first understand how the circuit is supposed to work, and then i look for voltages to make sure it all fits.

Gordon