12-19-2013, 02:38 PM
Thanks for all the information. Thought I had better give an update as to how things were getting on.
What I have is actually a Philco Reception Set BV-611 , Frequency Coverage 200-500kHz
I have the manual an circuit diagram so things have progressed.
The Power Supply section has been re-built (old capacitors re-potted with modern ones). The Mallory 650 vibrator has been converted to a solid state version that fits in the old can and is pin compatible.
HT is good and solid at 280V, with wave forms in and out of the transformer looking good (no nasty spikes)
I still have to replace a few old capacitors as these are well outside spec and are a bit leaky.
My main problem is that the bench supply I use can only supply 2A at 6V and the set will need appx 4.8A, so new bench PSU to be built/bought. A couple of photos attached to show what I have done:
Cheers
Richard
What I have is actually a Philco Reception Set BV-611 , Frequency Coverage 200-500kHz
I have the manual an circuit diagram so things have progressed.
The Power Supply section has been re-built (old capacitors re-potted with modern ones). The Mallory 650 vibrator has been converted to a solid state version that fits in the old can and is pin compatible.
HT is good and solid at 280V, with wave forms in and out of the transformer looking good (no nasty spikes)
I still have to replace a few old capacitors as these are well outside spec and are a bit leaky.
My main problem is that the bench supply I use can only supply 2A at 6V and the set will need appx 4.8A, so new bench PSU to be built/bought. A couple of photos attached to show what I have done:
Cheers
Richard
