Are you "checking" with a constant CW carrier or voice? Sent from my iPhone ...nr4c. bill
> On Nov 28, 2016, at 4:56 PM, Mike Weir <ve3...@hotmail.com> wrote: > > While on 20m I tuned the MFJ 1788 to the lowest SWR which was 1.2:1. I did > this using the tune button on the K3. I noticed the SWR on the K3 was > bouncing around from 1.2, 1.3, 1.7, 1.4 and so on and never settling on just > one reading. This only happens on 20m and no other band that I tuned on. Here > is some of the trouble shooting I did. > > 1. I have a KX3 and hooked it up to the MFJ 1788 loop antenna and read the > SWR. It showed 1.2:1 and no "bouncing" issues. I did remove the PL259 from > the K3 ANT1 port and connected it to the KX3 so the test would include all > that was in line with the K3. In line meaning coax, antenna switch and MFJ > tuner box. > > 2. I opened up the K3 and tightened all screws ( boards, case, SO-239 and > any checked out the seating of coax jumpers in the rig for a secure fit. > > 3. I tried the K3 on a dummy load and all was good. > > I am at a loss as to what is going on and am looking for some input? I check > the rig again today on 20m and it's still having SWR bouncing issues. I have > never had this in the past and am looking for feed back on things to check? > > > Setup information > > Radio K3 with antenna tuner (not being used rig is on bypass) > > Antenna MFJ 1788 mag loop > > Power 5 watts QRP > > Coax RG 8X 30 ft > > Thanks in advance > > Mike VE3WDM > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n...@widomaker.com > While on 20m I tuned the MFJ 1788 to the lowest SWR which was 1.2:1. I did > this using the tune button on the K3. I noticed the SWR on the K3 was > bouncing around from 1.2, 1.3, 1.7, 1.4 and so on and never settling on just > one reading. This only happens on 20m and no other band that I tuned on. Here > is some of the trouble shooting I did. > > 1. I have a KX3 and hooked it up to the MFJ 1788 loop antenna and read the > SWR. It showed 1.2:1 and no "bouncing" issues. I did remove the PL259 from > the K3 ANT1 port and connected it to the KX3 so the test would include all > that was in line with the K3. In line meaning coax, antenna switch and MFJ > tuner box. > > 2. I opened up the K3 and tightened all screws ( boards, case, SO-239 and > any checked out the seating of coax jumpers in the rig for a secure fit. > > 3. I tried the K3 on a dummy load and all was good. > > I am at a loss as to what is going on and am looking for some input? I check > the rig again today on 20m and it's still having SWR bouncing issues. I have > never had this in the past and am looking for feed back on things to check? > > > Setup information > > Radio K3 with antenna tuner (not being used rig is on bypass) > > Antenna MFJ 1788 mag loop > > Power 5 watts QRP > > Coax RG 8X 30 ft > > Thanks in advance > > Mike VE3WDM > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n...@widomaker.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
