Hi there,
I have decided that I start buiding a tube HF amplifier.
It should have an output (SSB) NO more than 1Kw (say 700-800w). This will be my first HF amp.
I have kept for many years (for future use...) four 4CX350FJ which I dont know if they are any good (externaly are in excellent condition).
Q1. Is there a way to test these tubes (4CX350FJ) and know if they are any good before installing them on the amp?
Q2. Are they a good choice or should I use different tube (e.g. 3-500Z)? Any suggestion is most welcome.
Q3. Bearing in mind that I dont have much experience in such amps, would it be a good idea to built one from the scratch or buy an old cheap one rebuilt/restore it?
Thanks for your time
Panicos
I have decided that I start buiding a tube HF amplifier.
It should have an output (SSB) NO more than 1Kw (say 700-800w). This will be my first HF amp.
I have kept for many years (for future use...) four 4CX350FJ which I dont know if they are any good (externaly are in excellent condition).
Q1. Is there a way to test these tubes (4CX350FJ) and know if they are any good before installing them on the amp?
Q2. Are they a good choice or should I use different tube (e.g. 3-500Z)? Any suggestion is most welcome.
Q3. Bearing in mind that I dont have much experience in such amps, would it be a good idea to built one from the scratch or buy an old cheap one rebuilt/restore it?
Thanks for your time
Panicos