neazoi
Advanced Member level 6
I have designed this receiver **broken link removed** which works satisfactorily for all HF ham bands as some of you already know.
I want to build the attached HF broadband active antenna for it but I want to remove T3 and use the rf preamplifier transistor of my receiver instead (which also works as an AF preamplifier (reflex).
In the attached preamplifier, T3 does not perform any amplification but it is there for impedance matching. But my RX does not need this impedance matching, because the input of the rf preamplifier (2sc9018) is already a high impedance (I think so).
So I was wondering, can I remove T3 and connect instead at this point, the preamplifier of my receiver through a coupling capacitor before the attenuator of course?
Also, will it be better to connect it at the 5v8 point instead of the 2v1 point?
I want to build the attached HF broadband active antenna for it but I want to remove T3 and use the rf preamplifier transistor of my receiver instead (which also works as an AF preamplifier (reflex).
In the attached preamplifier, T3 does not perform any amplification but it is there for impedance matching. But my RX does not need this impedance matching, because the input of the rf preamplifier (2sc9018) is already a high impedance (I think so).
So I was wondering, can I remove T3 and connect instead at this point, the preamplifier of my receiver through a coupling capacitor before the attenuator of course?
Also, will it be better to connect it at the 5v8 point instead of the 2v1 point?