[SOC] OHR WM1-1

[Tom McCulloch]

I have an OHR WM-1 Wattmeter.  Apparently there was an older version and a 
newer version of the WM-1 (this is before the WM-2 came out).  I'm pretty 
sure I have the newer version, I'm told the difference is that the older 
version's meter is 100% clear plastic and the newer version has a black 
border along the bottom of the meter.

So, I have the black bordered meter and I was wondering if anyone has the 
instructions for the WM-1 (or can point me to a web site that has them) and 
can tell me how to calibrate it.  There are two pots inside, one is for the 
10 watt range and the other for the 1 watt range.  R6 and R-something else. 
You are supposed to adjust them back and forth until some magical reading is 
arrived at, but that's all I know.

Any help would be appreciated.

Thanks
Tom
WB2QDG