Hi Alan and Jim,
SUCCESS (well, more or less, see below). I have replaced Q1-3, Q4-5, Q6, and IC3. Now RX draws 125 mA (display installed) and shows a whopping 3,4 W TX-output with 12V input. The drains of Q1-3 show on TX the desired big signal on the scope. So many thanks, once again, for your super help. I have a working TX.
Sadly, however, now the RX side is fouling up. During calibration maximum I-Q balance was only obtained with C1 completely open. So I took off 4 windings from the third secondary of T1. Now C1 maximises in a reasonable position. But I have a lot of noise and next to no signal. The noise reacts strongly to tapping on the board. Moreover, when I tune to a frequency (RX only!), then my nearby other receiver responds with a strong continous tone (around 650 Hz) on that very frequency. This is only a preliminary report. I'll have to look at this more closely and will start by measuring the IC3 pins again.
73 de andre
