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Maverick A24 Technical Bulletin
Echo Circuit Clock Noise This modification will eliminate any clock noise, or transmit oscillation, that may occur while using the echo circuit in the Maverick A24 transceiver. 1. Disconnect the transceiver from the power source. 2. Remove speaker side cabinet. 3. Unscrew the echo board from the side chassis of the transceiver. 4. Locate Q602 on the echo board -Q601 is an empty location on the echo board, there is no component. 5. Install a 47,000pf Monolithic Ceramic capacitor at Q602, as illustrated below.
Maverick A24 Echo Circuit Clock Noise Update Maverick A24 Echo Circuit Clock Noise Update
In addition to this tech bulletin, Magnum notes that there have been some A24s that have been found with a 1K resistor in the R77 location. This resistor value should be 2.2K. This is located in the receiver IF stage and the 1K causes the receiver to be far too sensitive and noisy. It's a good idea to check for this in all radios, as well as those that exhibit this symptom. Back to related Maverick A24 article.
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Maverick A24 Technical Bulletin