Hi Gentlemen! Recently I got some strange behaviour in my K3/100 #4413, looking for any ideas.
When running more than 12 watts on 3.5 and especially 1.8 mhz, the internal meter shows higher SWR values. The higher the power is set - the higher the showings are. Like when the power is 20w - it shows smth near 2.0, when the power is set to 50w - it shows 3.0 and says 'HI SWR'. If I tune antenna with ATU prior to transmitting - the values are lower, but overall behaviour is reproduced. Everything looks fine on 40 meters and higher. But: 1. External meter shows normal SWR like 1.2-1.5 (the real one - the same as my antenna analyzer shows). 2. If power level is set lower than 11.9 watts - the problem does not persist (internal meter shows 1 or 2 segments). Given the description above - I guess something should be wrong in the 100w amplifier? Looking for any advice. Thanks and 73! Ilya, R3XA ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
