[AMPS] Bird meters

[W8JI@contesting.com (Tom Rauch)]

> Does anyone know if Bird thruline meters are linear meters (i.e.
> deflection directly proportional to current) with a non-linear scale, or
> if they are non-linear meters (i.e. deflection proportional to a function
> of current) with a non-linear scale?
> 
> 73
> 
> Peter G3RZP

They're reasonably linear movements. As I recall about 1300 ohms 
with 39 mV full scale. 

Be sure to load the detector with 1300 ohms while making 
measurements because the meter movement is the bulk of the 
series resistance for the detector diode.


73, Tom W8JI
w8ji@contesting.com

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