On 5/19/2012 4:53 PM, Pete Smith N4ZR wrote: > Just read the reviews of antenna tuners in QST, with > careful attention to the amount of power absorbed in the tuner at > some load impedance/reactance combinations, and imagine 600 watts > being dissipated inside a 500-watt tuner.
Understand that most of the tuners evaluates in QST were "T" section tuners. The high pass "T" network can become pathological with some values - particularly if the series capacitors have excessive Xc (are too small). The KAT-500 is an L-network tuner which generally has much lower currents, thus less loss and less heating. In spite of its modest height, the KAT-500 has some truly massive inductors for a tuner rates at 600 Watts. I'm not concerned that the claim of 3:1 or somewhat higher for 1000 Watts is excessive and will be seriously considering the KAT-500 as a "line flattener" if/when I put the Quadras back on-line. 73, ... Joe, W4TV On 5/19/2012 4:53 PM, Pete Smith N4ZR wrote: > You bet, Vic. Just read the reviews of antenna tuners in QST, with > careful attention to the amount of power absorbed in the tuner at some > load impedance/reactance combinations, and imagine 600 watts being > dissipated inside a 500-watt tuner. > > 73, Pete N4ZR > The World Contest Station Database, updated daily at www.conteststations.com > The Reverse Beacon Network at http://reversebeacon.net, blog at > reversebeacon.blogspot.com, > spots at telnet.reversebeacon.net, port 7000 and > arcluster.reversebeacon.net, port 7000 > > > On 5/19/2012 4:39 PM, Vic K2VCO wrote: >> Oops, wrong again! I see that they make the claim that it will handle >> 1200-1500 watts on >> the website. But I suspect you have to be very careful! >> >> On 5/19/2012 1:32 PM, Vic K2VCO wrote: >>> I would expect that this would depend not only on the SWR, but on the >>> nature of the >>> impedance it sees. Unless someone from Elecraft told you this, I wouldn't >>> risk running >>> 1500 watts at 3:1 SWR (if Elecraft DID tell you this, then I'm ordering >>> one)! >>> >>> On 5/19/2012 11:41 AM, N5GE wrote: >>>> I will >>>> handle 10:1 SWR at 500 - 600 watts and 1200 to 1500 watts at 3:1 SWR. >>> >>> -- >>> Vic, K2VCO >>> Fresno CA >>> http://www.qsl.net/k2vco/ >> ______________________________________________________________ >> 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 >> > ______________________________________________________________ > 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 > ______________________________________________________________ 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