Re: Hammarlund HQ-180A I.F. Help Sought
Just to correct a mistake in my previous post.
T3 primary is C and D with Pin C going to the 0A2 via R12 and the transmit /receive switch.
T3 secondary is A and E.
In which case you should get the low resistance readings between C to D and A to E and infinity between the other pins.
It is possible the T4 terminal connected to the 1K (R12?) resistor from T3 pin C is just looping through.
Sorry for any confusion.
Don
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