04-14-2015, 09:33 PM
Well I think the antenna coil is good.
I tried to rewind the tickler coil yet again (Going for the Guiness Book of Worlds Records at this point). Each time I rewind it, it either stops working or I get partial operation.
This last time the oscillator started working again pretty well, but promptly cuts out below 850. But it receives pretty well and I can catch the oscillator beat note in a radio I have nearby.
There are many spurious whistles across the band. All I have to do is tap the 36 tube and it can stop working. Maybe some pins in the socket are loose.
I have ordered new 5, 6 and 7 pin sockets. I am going to install a new 5 pin socket. If that doesn't work a lot better I may try the 77 tube conversion, since that is pretty simple.
I may subsequently advance to the full 6A7 conversion.
BTW, can I find replacement coil forms so I don't have to take apart the existing one that almost works??
Mark
I tried to rewind the tickler coil yet again (Going for the Guiness Book of Worlds Records at this point). Each time I rewind it, it either stops working or I get partial operation.
This last time the oscillator started working again pretty well, but promptly cuts out below 850. But it receives pretty well and I can catch the oscillator beat note in a radio I have nearby.
There are many spurious whistles across the band. All I have to do is tap the 36 tube and it can stop working. Maybe some pins in the socket are loose.
I have ordered new 5, 6 and 7 pin sockets. I am going to install a new 5 pin socket. If that doesn't work a lot better I may try the 77 tube conversion, since that is pretty simple.
I may subsequently advance to the full 6A7 conversion.
BTW, can I find replacement coil forms so I don't have to take apart the existing one that almost works??
Mark