My Van Ruyten has been working fine, however I used it with my little AM Transmitter, with no dramas, however when I turn the transmitter off, I can't get a peep out of it, turning the tuner all the way from left to right and back again, even with the long wire antenna, yet it used to pick up all the stronger stations, but now nothing, however when I turn on my transmitter, it picks it up loud and clear and fills the house with music!

I have had it apart and nothing looks any different than usual, however there is microphonic wire between a coil and valve, I resoldered both ends in case the solder had gone dry.. If I touch the wire with a finger I get RF noise, yet if I pinch it between thumb and finger it goes dead quiet? I'm not sure if this means anything but it seems peculiar! I can only wonder if the aerial connection of another radio may be annulling the input sensitivity, as I have had this before, I can only try unplugging each and see.

Any Idea's as to why it may be playing up are welcome.

The fact it is so lively when the transmitter is on tells me nothing is really wrong, s even the transmitter generated music drops away if I disconnect the antenna wire from the chassis.

Sounds like the local oscillator is not running.
I think that these radios used a very low IF, ie 175kHz, So perhaps your 1308 modulator is going straight through!.
Does it tune to the same spot on the dial, as when it was working OK?.
JJ

I think so but honestly can't be sure. The local oscillator, that would be valve gone wouldn't it?

Maybe, but you should be able to hear the oscillator using a portable transistor radio near it.
Experiment with a known good radio first so you get used to the results, When you think you hear the local oscillator, then move the dial on the suspect receiver and it should disappear.
JJ

Oscillator is fine Wheeee Whoooooo etc with the test radio, then the same thing with the one playing up, although right at the end of the band, than I notice I am getting whisper quiet reception on a couple of stations??? I unclip and re- clip the alligator from and back to the longwire aerial connection and no change in whisper, but then when I wiggled the wire I had soldered to the alligator clip, running to the antenna lug on the back of the radio, thinking "it's got to be this bleeding thing"! The set burst into song! So it's all good again, just a dodgy wire! Hmmn Sorry about that, I had thought of that all along, but dismissed as the wire looked good and I had soldered it for good measure!