with no.1 h.f. system transmitting the interlock circuit
- allows no.2 h.f. to receive only
- allows no.2 h.f. to transmit and receive
- does not allow no.2 to transmit or receive
Explanation from PART66Online
When one HF transmitter is keyed the interlock inhibits the second HF system so it can neither transmit nor receive. This prevents the high transmitted power of No.1 from damaging or desensitising the closely located No.2 receiver and avoids mutual interference between the two systems.
N
nairs asked · 14 Mar 2014
VHF CAN RECEIVE WHY NOT HF?
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