I decided to do a spot check on SWR readings on my antenna with my KX3 after I tuned it with a MFJ 259C. The results were different between the two devices.
The MFJ on the lower bands read a significantly higher SWR than the KX3. I guess my question is which would you trust, the MFJ or the KX3? The reading make a difference on how I will tune my antenna. Or do I need to get a third meter in the mix and go 2 out of 3? Sent from Yahoo Mail for iPhone ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
What's the SWR? Anything under 2:1 won't make a difference in
performance. Using two 50 ohm dummy loads connected in parallel, either instrument should show a 2:1 SWR. Be sure the dummy loads are actually 50 ohms and not just labeled such. I have one of those "gallon" type loads that measure 58 ohms cold and 64 ohms hot. The label on the bucket says "50 ohms". A man with a watch will always know the time. A man with four watches is never sure of the time. 73 Bob, K4TAX On 2/23/2018 8:34 AM, Roger Meadows via Elecraft wrote: > I decided to do a spot check on SWR readings on my antenna with my KX3 after I tuned it with a MFJ 259C. The results were different between the two devices. > The MFJ on the lower bands read a significantly higher SWR than the KX3. > I guess my question is which would you trust, the MFJ or the KX3? The reading make a difference on how I will tune my antenna. Or do I need to get a third meter in the mix and go 2 out of 3? > > > Sent from Yahoo Mail for iPhone > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Most SWR meters accurately read 1:1 with a 50-ohm resistive load but may
not read accurately at higher SWR. That normally isn't a problem: when you're tuning an antenna you are aiming for lowest SWR. The exact SWR isn't important as long as it is minimum. Alan N1AL On 02/23/2018 06:34 AM, Roger Meadows via Elecraft wrote: > I decided to do a spot check on SWR readings on my antenna with my KX3 after I tuned it with a MFJ 259C. The results were different between the two devices. > The MFJ on the lower bands read a significantly higher SWR than the KX3. > I guess my question is which would you trust, the MFJ or the KX3? The reading make a difference on how I will tune my antenna. Or do I need to get a third meter in the mix and go 2 out of 3? > > > Sent from Yahoo Mail for iPhone > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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