[Hallicrafters] SR-150 heads up 2

Jim Liles james.liles at comcast.net
Sun Feb 22 21:34:28 EST 2009


Should have included the work around for the antenna relay problem.  If you 
choose to use a different antenna relay consider the following.  Tie 12 
volts to the wire that runs from the VOX relay, K1, to pin 11 of the power 
supply cable and the pin 12 wire to the 12 volt antenna relay that you have 
replaced.  Also add an 800 ohm resistor from the V13 cathode to ground. 
Remember the standard configuration for K2 and K3 is closed for receive 
mode.  Verify the voltage at the 6AQ5A cathode is close to 16 volts receive 
and 1.5 volts transmit.    Kindest regards Jim K9AXN 



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