[MRCA] The BC-1306 Question

[Ray Fantini]

So, I have a BC-1306 transmitter in the shop that has an issue. The Tune to Max light wont light. Tried a couple of different bulbs and don't think that's the issue. The transmitter had a couple other small issues and did resolve them. I figure that I am getting around three to four watts in CW and maybe two watts into fifty Ohms on AM and the audio quality is good. But looking at the bulb socket can see that the center of the bulb is driven off the center tap of T131 the antenna tuning coil and do get plenty of RF Voltage at that point but the weird thing is I cannot see anything of C88 the 6 uuf capacitor that's on the ground side of the bulb (I 152), on the GRC-9 they return the cold side of the tuning bulb to a high DC line due to the possibility of flash over at the high voltage the circuit operates at but on the WW2 BC-1306 it appears to be just grounded thru a capacitor I cannot find? Any possibility I am missing something?
Also, the BC-1306 appears to want to see a 5,000 Ohm load on its output! At least that's what I think the manual is telling me. Figure that may do with it being used with such short antennas?

Ray F/KA3EKH

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/mrca/attachments/20260225/9494f481/attachment.html>