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-----Original Message----- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Fred Goldstein Sent: Tuesday, August 31, 2010 9:43 AM To: WISPA General List Subject: Re: [WISPA] Suggestions for high bandwidth @ 25 miles. At 8/31/2010 09:00 AM, Robert West wrote: >Depends on the equipment but the rule of thumb I always was told was to >power it up only long enough to disable the radio unless you are using >loads. If you don't load the radio and run it long enough, it will >indeed be damaged. I have various examples of that laying around from >where uf/l connectors had popped off the MT cards. Yeah, they still >work but only for close in use now! Stupid question, but is anyone selling little dummy loads (only needs 1 watt max, after all) built into the various types of antenna connector that these radios use? I suppose you could just take a 1W carbon resistor and solder up your own, though it would leak a bit. (I remember the original Cantenna. This wasn't a Pringles can. It was a dummy load, made by Heathkit, consisting of a gallon or so metal can filled with oil that cooled some big resistors. An SO-239 was on top and it could absorb a kilowatt for a brief test, or a smaller load for a longer time. I did watch somebody smoke one with a serious 2-meter grounded-plate amplifier. Those 8877 tubes were great. It was a very generous kilowatt amp.) -- Fred Goldstein k1io fgoldstein "at" ionary.com ionary Consulting http://www.ionary.com/ +1 617 795 2701 ---------------------------------------------------------------------------- ---- WISPA Wants You! Join today! http://signup.wispa.org/ ---------------------------------------------------------------------------- ---- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
