No subject

[Mark Graalman WB8JKR]

  John,

  The 1 mh chokes are not critical at all, anything from 100uh
to 2.5 mh would work fine as long as the current rating is at
least 150-200 ma. they only provide a DC path to the B- for
the grids.
 The .82 ohm grid shunt could be made by winding 19.5 feet
of #26 copper around the body of a 5 watt wirewound resistor
of a value higher than about 50 ohms or so.

73,  Mark  WB8JKR


On Sun, 28 Apr 2002 09:27:24 -0700 John C Owens <jcowens3 at JUNO.COM>
writes:
> I am having difficulty finding replacements for some of the more
> unusual
> parts in my SB220. Notably, the 1mH choke in the 3-500Z grid to
> ground,
> and the .82 ohm, 2W meter shunt resistor (R3). Source suggestions
> would
> be appreciated.
>
> Thanks - John Owens (N7SEJ)
>
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