Both my early edition K144XV were not unconditionally stable and were swr intolerant
I think you will find that the 3:1 swr is because it is oscillating "out of band". Try listening on a scanner. I have experienced this on my two k144xv and g4ddk had the same issue with his. One example produced 162MHz, one 168MHz one around 158MHz. When you tune or speak it stabilizes and generates on 2m My k144xv were fine if I operated at the bottom end of 2m where the swr was 1.1:1 but my antenna swr rose to 1.6:1 at around 144.8MHz and above this point it showed the instability you mentioned Mine were replaced with the later production run k144xv (the one without the centre spacer, but that could just be coincidence!) and the issue has not arisen since Dave G4FRE Message: 19 Date: Fri, 17 May 2013 05:26:24 -0500 From: Michael Eberle <mtebe...@mchsi.com> To: Elecraft@mailman.qth.net Subject: [Elecraft] K144XV Strange Readings Message-ID: <519605d0.20...@mchsi.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed I've noticed strange behavior on both the W2 watt meter and a cross-needle meter when using my K3 on 2 meters. Just curious if anyone has had problems like this? In SSB mode, keying the mic without any audio causes the watt meter to show about 3 watts output power and 3:1 SWR. However If I hold the TUNE button and put out a carrier It shows the expected 7-10 Watts forward with normal low SWR. It also appears to show normal readings while speaking into the mic, but goes to the unusual readings with in between audio peaks. Thanks Mike KI0HA ______________________________________________________________ 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
