[Johnson] Valiant/Ranger meter shunts

[Roy Morgan]

At 06:19 PM 5/4/03 -0500, you wrote:
>Hello, list.

... Obviously the plate current shunt is
>suspect.  Measured same with my Fluke 189.  While not terribly accurate
>using this measurement scheme, that .202 ohm hairpin of whatever
>measured more like .5 ohm.  Nardling fardwarks!

I suggest you get a piece of telephone wire maybe two feet long  (check 
wire tables for resistance per foot) and wind that on a resistor of any 
value. Arrange to feed the shunt and meter circuit a known current from 
some outside source with the transmitter power off.  Cut and try (soldering 
the shunt well into place each time) till you get the meter to read right.

Alternatives are; get five one ohm resistors and put them in parallel, or 
find some nichrome wire and use that.

Roy



- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
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