I tend to agree on not needing an antenna mounted pre-amp for 50MHz unless you have exceedingly long feed-lines, or, very serious about EME.
I have about 85 feet of regular old RG-213 to the beam and so far, 153 countries confirmed on six along with WAS & WAC. Conversely, I have Landwehr pre-amps at the antennas for 144/222/432. Even though the feed-line on 432 is 7/8" Heliax, switching on the pre-amp makes a noticeable difference. When I had a regular K3, I didn't see a lot of difference between the Elecraft outboard pre-amp and the ARR unit. That said, my new K3S does not need the external pre-amp since it basically has the equivalent built-in, which is another BIG plus for going with the later version K3S. 73, Charlie k3ICH -----Original Message----- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Josh Fiden Sent: Thursday, January 26, 2017 12:46 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Is it just me? 3 dB feedline loss is not a practical number. At 6m I run only hardline, 90' of 1/2" for terrestrial and about 75' of 1-1/4" for EME. Loss is <<1dB. If you keep your eyes open, surplus low loss feedline is not expensive. Putting a preamp on the tower with appropriate sequencing & isolation, especially if you run QRO, is more effort/cost/maintenance. Hard to justify at 6m. 73, Josh W6XU ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
