I still don't know what to think. I came home from Hamvention today with the tiny T1 tuner for my K2, based more on convenience of installation and ability to use it with other rigs and portability. If I eventually want an auto tuner for higher power, I'll go through all this again, I guess. Meanwhile, I'll keep the Hallicrafters connected to the Palstar tuner.
Hey, it was worth the price of the tuner, just to meet Don at the Elecraft booth! Parker -----Original Message----- From: Bill Coleman [mailto:[EMAIL PROTECTED] Sent: Friday, May 20, 2005 2:24 PM To: John, KI6WX Cc: Don; Parker Buckley; [email protected] Subject: Re: [Elecraft] Tuner efficiency question On May 13, 2005, at 12:40 AM, John, KI6WX wrote: > At high power, an inefficient tuner can generate significant > amounts of heat, which can destroy components. A 1kW transmitter > into a 70% efficient tuner will generate 300 watts of heat in the > tuner. This is why I tend to disbelieve tuner efficiency figures. From the QST tests, there seem to be a lot of tuners than have losses greater than 10% -- yet there is no evidence that any of these tuners heat up appreciably! At 1 kW, a 10% loss is 100 watts -- imagine how hot a tuner enclosure would get if you had a 100 watt light bulb inside it. Even at 100 watts, 10% loss is 10 watts. That's still enough to induce a few degree change in a small enclosure. Bill Coleman, AA4LR, PP-ASEL Mail: [EMAIL PROTECTED] Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
