(11-03-2016, 23:46)SP3OSJ napisał(a): This is not a short circuit there is a transformer (inductance "L")!
Yes, it's inductance, but it have zero resistance and short all circuit (LPF, BPF) and TRX output/input directly to ground. Simply, if i'm apply test signal of 7Mhz from generator to ANT input, i see very weak signal on display, but if i'm disconnecting PA board and connect generator directly to TX input of TRX board, signal is very strong.
Maybe i have miss something...
Okay, one more thing i thought i shall mistake. Now i have shorted all inductance within LPF and BPF for 40m diapason (as i test on 40m), instead installing coils, it's just faster.
Is it critical? May be this is reason of signal loss?