I wonder about that. R-38 is shown in all three versions of the
handbook I have. In the civilian S-28 and S-28A its shown as a 47K or
50K half or third watt. In both drawings there is a straight wire from
the junction of R-38 to C-44 to the bass switch. I suspect the copy of
TM11-274 on BAMA was touched up, the resistor values are in a font that
does not match anything else. I will see if I can find another version
of this book. The slight differences in the value of the resistor shown
are due to the standardized RMA values being changed. The old value of
50K changed to 47K. R-38 is identified in the SX-28A manual as the
plate decoupling resistor for V-12 as I stated earlier.
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On 2/18/2025 6:29 PM, Jacques_VE2JFE via groups.io wrote:
Hi Don,
Yeah, there is a misprint in the TM11-874 schematic.
The 180M (180K) is the value of R39 (see parts list), but there is
another ¡°270M¡± in excess just below it¡.
*73, Jacques, VE2JFE in Montreal***
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
