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For Swan 600R Owners


In one month, 3 out of 4 complaints of Swan 600R received signal distortion were traced to a defective plate resistor at V7/12AV6, the AGC stage. R701 is a 6.8Kohm 1/2 watt resistor. Failure usually develops from a short in the 12AV6 which overheats the resistor. Distortion is evident regardless of whether the resistor is shorted or open; and, if the resistance value drops below 500 ohms. - - K4BOV

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