15-03-2022, 10:31 PM
I changed a few of the resistors on the radio that have gone well out of any tolerances some had doubled in value. I used some modern ones, but in reality they do not look correct as opposed to the dog-bone style that is fitted. There are more to replace but I will have to have a think about what types I will use.
When I first powered it up I could receive LW but no MW stations. This was down to the band-switch having oxidized contacts, so a bit of wet and dry/emery paper and switch cleaner soon sorted that.
It needs a good wire antenna as there is nothing built in, so at some point I may build a frame aerial for it, or just stick another wire in the loft?
The AC/VP1 valve at some point was replaced with a VMP4G it seems to be slightly taller as the anode lead is at it's limit, but the set is working. It could do with more resistors changing, but that will wait for a while.
If anyone has a spare locking nut of the correct type for the knobs I would be grateful, reasonable costs covered of course.
Adrian
When I first powered it up I could receive LW but no MW stations. This was down to the band-switch having oxidized contacts, so a bit of wet and dry/emery paper and switch cleaner soon sorted that.
It needs a good wire antenna as there is nothing built in, so at some point I may build a frame aerial for it, or just stick another wire in the loft?
The AC/VP1 valve at some point was replaced with a VMP4G it seems to be slightly taller as the anode lead is at it's limit, but the set is working. It could do with more resistors changing, but that will wait for a while.
If anyone has a spare locking nut of the correct type for the knobs I would be grateful, reasonable costs covered of course.
Adrian
Learning as I go!
Youtube EF91 Valve
Youtube EF91 Valve
