- Has anyone experienced this problem with the VHF HM-2102 Watt/SWR meter?

I am using it with a Kenwood 241-A 2 meter tranciver. I have checked the set with a known good watt meter and the results were: low power is 6 watts. Medium power is 10 watts and high power is 50 watts which is close to the values in the Kenwood manual. There are two scales on the meter, a 0-25 watt scale and a 0-250 watt scale. With the HM-2102 connected If I set the meter to read corectly on the 25 watt scale with the 200K pot it will only show about 40 watts on the 250 watt scale. There is no problem with calibrating the SWR by finding a null with the 200K pot, only a problem with the power readings. If I set the meter to read correctly on the 250 scale it will read very high on the 25 watt scale. I have checked all resistors and replaced two that were out of tolerance.

Any thoughts?

Thanks

Bob W1GTH - Ok I replaced the 68K resistor with a 100K trimmer pot.Problem solved. I can now adjust the 25 and 250 watt ranges independently. Thanks to all that replied.73BobW1GTH----- Original Message -----
**From:**Robert**Sent:**Tuesday, January 14, 2014 12:31 PM**Subject:**[Heathkit:Yahoo] Heathkit HM-2102 Watt meter problemsHas anyone experienced this problem with the VHF HM-2102 Watt/SWR meter?

I am using it with a Kenwood 241-A 2 meter tranciver. I have checked the set with a known good watt meter and the results were: low power is 6 watts. Medium power is 10 watts and high power is 50 watts which is close to the values in the Kenwood manual. There are two scales on the meter, a 0-25 watt scale and a 0-250 watt scale. With the HM-2102 connected If I set the meter to read corectly on the 25 watt scale with the 200K pot it will only show about 40 watts on the 250 watt scale. There is no problem with calibrating the SWR by finding a null with the 200K pot, only a problem with the power readings. If I set the meter to read correctly on the 250 scale it will read very high on the 25 watt scale. I have checked all resistors and replaced two that were out of tolerance.

Any thoughts?

Thanks

Bob W1GTH