yo2550
Member level 2
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The receiver circuit should have been distorted after I tested the radio with my DIY power amplifier. Once, the ANT was shorted to 12v. power from a battery. The problem may also come from testing the radio with the PA many times with a high SWA.
This results in less sensitivity of signal receiving comparing to another same model of the radio. I tried adjusting the RV1, which is supposed to be a squelch but the problem still exists. I cannot receive weak signal while another same model one can. This radio is auto squelch, there is no SQ dial.
So, I'm thinking of changing the Q6, Q8, Q9 but I'm not sure if it would fix the problem.
Please tell me which components should I change to fix the receiver unit of this radio.
The Schematic Diagram is in the TH7_X7A.pdf file.
Thanks.
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
**broken link removed**
The receiver circuit should have been distorted after I tested the radio with my DIY power amplifier. Once, the ANT was shorted to 12v. power from a battery. The problem may also come from testing the radio with the PA many times with a high SWA.
This results in less sensitivity of signal receiving comparing to another same model of the radio. I tried adjusting the RV1, which is supposed to be a squelch but the problem still exists. I cannot receive weak signal while another same model one can. This radio is auto squelch, there is no SQ dial.
So, I'm thinking of changing the Q6, Q8, Q9 but I'm not sure if it would fix the problem.
Please tell me which components should I change to fix the receiver unit of this radio.
The Schematic Diagram is in the TH7_X7A.pdf file.
Thanks.