Just out of curiosity are you performing these tests with a 1000 cycle tone and if so, have you tried it with no modulation?
It almost sounds like it is going out of the bandpass of the receiver when you increase the signal level. What happens when you vary the frequency a few KC higher or lower in frequency than your center frequency. I assume you have already tried resetting the radios settings back to factory default settings in the programming software. Joe --- In [email protected], "Camilo So" <[EMAIL PROTECTED]> wrote: > > Need help to order a MTR2000 service manual that have the schematic diagram of the receiver unit, Got this unit from Ebay, Hook up the unit on my bench with a dummy load on the TX out, and apply signal on the RX input with a IFR1200, The squelch open at 0.12 micro-volt at 0.15 uv its 12 DB Sinad, when signal > was increased to about 1.0 micro-volts or higher the receiver drop out, as if the agc is overloaded that cut out completely and also drop the TX, Have anyone ever > experience this problem before, This is the first time I have seen this kind of problem , and its hard to fix it w/o a diagram. any help is highly appreciated. > > > > de w4cso Camilo >
