To answer your other question, if the KAT500 cannot find a match better than 1.5:1 the FAULT indicator on the front panel will light. You will also trigger a fault if:
1) The RF power is above 110 watts while tuning to protect the relays from arcing. 2) The impedance can be matched but is outside of the KAT500's normal tuning range with an impedance that may produce RF voltages that could damage the components considering the RF power applied. In that case, the fault occurs when you raise the RF power. However, it is safe to operate at any power level below which the fault occurs. 73, Ron AC7AC -----Original Message----- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm Sent: Sunday, April 2, 2017 2:12 PM To: Phil Hystad; Elecraft Reflector Subject: Re: [Elecraft] KAT500 tuning behavior when the load is impossible to match ? Phil, It is indeed possible to match a very high SWR or even an open circuit or a short. That will be more probable on the higher frequency bands than on the lower bands. 73, Don W3FPR On 4/2/2017 12:42 PM, Phil Hystad wrote: > I got my second KAT500 tuner to use with my new backup rig and while setting up and testing and tuning with my two different antennas I made a mistake. > > I first observed the results displayed on the utility program operate page where the tuned SWR was 1:1 and the bypass SWR was something like 54:1. I immediately realized that something was not right and discovered that my coax cable was not switched to the antenna but rather my dummy load but the cable to the dummy load was disconnected (because I was moving things around). > ______________________________________________________________ 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 r...@elecraft.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
