17-12-2018, 08:07 PM
Hello LLewelyn and welcome to GVR.
These sets from 1947 are covered on Trader sheet 835.
Unless somebody has been twiddling, it's relatively unlikely that the alignment will be far out. Your problems with weak output could easily be due to reasons other than alignment.
Fairly obviously you can align MW and LW without a source of 18MHz. If you really need SW then you cold try aligning by ear, for maximum output on received stations. your signal generator may also produce harmonics, so you could try it at (9MHz or 6MHz to see if you get any results.
I assume you've changed all the wax capacitors. Especially C22, 0.01uF (Trader 835, other sources of data may vary). If this capacitor leaks it will likely damage both the output valve and transformer.
These sets from 1947 are covered on Trader sheet 835.
Unless somebody has been twiddling, it's relatively unlikely that the alignment will be far out. Your problems with weak output could easily be due to reasons other than alignment.
Fairly obviously you can align MW and LW without a source of 18MHz. If you really need SW then you cold try aligning by ear, for maximum output on received stations. your signal generator may also produce harmonics, so you could try it at (9MHz or 6MHz to see if you get any results.
I assume you've changed all the wax capacitors. Especially C22, 0.01uF (Trader 835, other sources of data may vary). If this capacitor leaks it will likely damage both the output valve and transformer.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
