[TenTec] Ten Tec 1225 SWER/Wattmeter linearity

[Mr Bill Mellema via TenTec]

Hello To All,

I have a TT 1225 wattmeter that is not linear especially on the 20 watt range. If I adjust it for 10 watts from a known source then the 5 watt reading is only showing about 3.5 watts. I double checked to make sure the bridge variable capacitor is adjusted properly thinking maybe it could affect my reading. I wanted to throw this out there to see if other 1225 users have the same problem. The 200 watt range reading linearity doesn't seem to be as pronounced.

Thanks in advance.

Bill N3WM