Re: [Elecraft] KPA-500 watt meter vs. Palstar

2011-09-18 Thread Fred Jensen
On 9/18/2011 10:57 AM, Don Wilhelm wrote: > Being one not to trust any instrument until it has proven its worth (and > calibration), I would not trust either until calibrated. Calibration sticker on it or not, in the final analysis, the only place a meter can be known to be accurate [unless not

Re: [Elecraft] KPA-500 watt meter vs. Palstar

2011-09-18 Thread Don Wilhelm
Jim, Being one not to trust any instrument until it has proven its worth (and calibration), I would not trust either until calibrated. OK, that brings up the question of how to do a meaningful calibration. I connect to a known good (precision) 50 ohm dummy load, and read the RF voltage at the d

Re: [Elecraft] KPA-500 watt meter vs. Palstar

2011-09-18 Thread Tony Estep
On Sun, Sep 18, 2011 at 10:25 AM, wrote: > ... it happens only on 20 meters into a dummy load... = Maybe you can put a scope across the dummy load and calibrate your power output that way. That has worked for me. Tony KT0NY -- http://www.isb.edu/faculty/facultydir.aspx?ddlFacult

Re: [Elecraft] KPA-500 watt meter vs. Palstar

2011-09-18 Thread k2zf50
K3 goes into oscillation evident on the K3 watt meter. Lower than 80 watts everything is OK. The TX gain calibration is good. > > > Thanks, > > Jim K2ZF > > > > > > > -Original Message- > From: Grant Youngman > To: elecraft > Sent: Sun, Sep 18, 20

Re: [Elecraft] KPA-500 watt meter vs. Palstar

2011-09-18 Thread Mike Fatchett W0MU
oscillation evident on the K3 watt meter. Lower than 80 watts everything is > OK. The TX gain calibration is good. > > > Thanks, > > Jim K2ZF > > > > > > > -Original Message- > From: Grant Youngman > To: elecraft > Sent: Sun, Sep 18, 2011 6

Re: [Elecraft] KPA-500 watt meter vs. Palstar

2011-09-18 Thread k2zf50
watts everything is OK. The TX gain calibration is good. Thanks, Jim K2ZF -Original Message- From: Grant Youngman To: elecraft Sent: Sun, Sep 18, 2011 6:20 am Subject: Re: [Elecraft] KPA-500 watt meter vs. Palstar If you've run the TX gain calibration, and that worked pr

Re: [Elecraft] KPA-500 watt meter vs. Palstar

2011-09-18 Thread Grant Youngman
If you've run the TX gain calibration, and that worked properly, it sounds more like you have an actual load problem. Which would cause high current. Is the high current warning happening both with a known good 50 ohm load connected to the K3 and with the antenna? Sent from my iPhone On Sep

Re: [Elecraft] KPA-500 watt meter vs. Palstar

2011-09-18 Thread k2zf50
need to know why the high current warning at 80 watts on the K3? Is it the watt meter I am using to calibrate the K3? Thanks, Jim Douglas K2ZF -Original Message- From: Ray Sills To: k2zf50 Sent: Sun, Sep 18, 2011 5:22 am Subject: Re: [Elecraft] KPA-500 watt meter vs. Palstar HI

[Elecraft] KPA-500 watt meter vs. Palstar

2011-09-18 Thread k2zf50
Hi, My KPA-500 watt meter and my Palstar watt meter read about the same at the higher power readings. But at the 100 watt and lower ranges there is a significant difference. My question is which is the more correct reading at the lower ranges, the Elecraft or Palstar. If I want to calibrate