[R-390] Still Deaf below 8 Mc one more question
Jim Green
jagreen3 at sbcglobal.net
Sat Oct 27 17:08:02 EDT 2007
I mentioned in my previous posting Pin 1 of V701 measures 178K Ohms
and should measure 150K Ohms. I looked at the schematic, and it looks
to me like this resistance is governed by R701. R701 resistor in the
receiver was a Brown Green Yellow or 150K resistor. I measured it and
it measured 178K. Therefore I replaced it with a new resistor that
measured closer to 150K. Pin 1 now measures 150K Ohms to ground.
However, tthe DC voltage at Pin 1 remains at around -0.46VDC (should
be -1.0 to -3.0 VDC according to the manual).
I took another look at the schematic, and on closer inspection R701
looks like it should be a 150 Ohm resistor. Can this be right? It
looks like someone forgot to put the K on the resistor value on the
schematic. Comments?
Jim KG9MM
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