Who said move the amp outside? I said move the power run outside from the room where the panel is to the room that needs it.
R. Kevin Stover AC0H ARRL, FISTS, SKCC, NAQCC. One of the guys that made sneakernet irrelevant, in my little corner of the world. "If it doesn't work the first time you push the button it won't work the 20th.Just stop." -----Original Message----- From: [email protected] <[email protected]> On Behalf Of Edward R Cole Sent: Sunday, April 29, 2018 5:57 PM To: Elecraft Reflector <[email protected]> Subject: Re: [Elecraft] FW: How far can the KPA1500 amp be from the PS? I would agree. If I invested >$5K in a shiny new piece of ham gear I would not risk it to damage from moisture. Besides, I would want to admire it every time I sat down in the shack. With that being said, I have a lot of equipment remotely located at tower top or bottom. Most of my operating is VHF/UHF/mw where RF cable losses can be astronomical. Everything at 900-MHz and up is remote in outside enclosures (usually fiberglass). NONE are air-tight and are open on bottom for free air exchange. I live in a coastal, sub-arctic climate which guarantee's moist air. Temperature changes will pull outside air into sealed compartments which have no path to exhaust back outside. Even if you live in the desert, temperature pumping exists (less extremely a air is drier). I am currently in process of installing a 1000w 6m,1200w 2m, and 600w 1296 amplifiers at base of their respective antennas (towers). All will have cooling fans with exterior air exchange (typically drawing air thru openings in bottom of enclosure and exhausted by fans thru separate vents (shielded from water entry). For HF, cable loss is insignificant if they are rated for QRO; keep it inside, warm/cool and dry. 73, Ed Rick N6XI, writes (edited): I would advise against putting the amp outdoors. Even if the housing is 100% water tight forever, Murphy almost guarantees that the first failure that causes you to want to access the amplifier will occur during a downpour or snow storm. 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: [email protected] ______________________________________________________________ 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 Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
