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32664Re: [Heathkit:Yahoo] Heathkit HM-2102 Watt meter problems

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  • K5MYJ
    Jan 14, 2014
    • 0 Attachment
      You need to do the calibration on the dummyload.
       
      It looks like you have a resistor that has changed value.
       
      Bob Macklin
      K5MYJ
      Seattle, Wa.
      "Real Radios Glow In The Dark"
      ----- Original Message -----
      From: Bob
      Sent: Tuesday, January 14, 2014 1:35 PM
      Subject: Re: [Heathkit:Yahoo] Heathkit HM-2102 Watt meter problems

       

      Bob, actually I used a dummy load and then just to compare I switched to the antenna and got almost identical results
      Bob
      W1GTH
       
       
      ----- Original Message -----
      From: K5MYJ
      Sent: Tuesday, January 14, 2014 1:35 PM
      Subject: Re: [Heathkit:Yahoo] Heathkit HM-2102 Watt meter problems

       

      Are you testing using a dummy load or an antenna?
       
      Bob Macklin
      K5MYJ
      Seattle, Wa.
      "Real Radios Glow In The Dark"
      ----- Original Message -----
      From: Robert
      Sent: Tuesday, January 14, 2014 9:31 AM
      Subject: [Heathkit:Yahoo] Heathkit HM-2102 Watt meter problems

       

      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

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