|
Well the only difference between a 3 dial and a 1 dial (single TRF stage 1 dial) TRF is usually two identical stages. If signal is strong and shielding is not good the first two stages can be dead and it will still work. Signal injection troubleshooting can be frustrating on these because often one can find themselves unsure if the signal being heard is really originating from the injection point connected to or entering the set through some coupling/leakage at a different point while the injection point is not passing any signal.
|