Just thinking because he is spending so much time off shore that he would want the best possible setup. I know I would want to make sure my radio setup was as efficient as possible because if I was in the middle of the ocean and had an emergency saving money on cheap coax would be the last thing on my mind.
Vern -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jim Sent: Monday, November 23, 2009 7:11 AM To: [email protected] Subject: Re: [Liveaboard] FW: VHF ant Vernon Densler wrote: > It really doesn't matter which mode you are using (fm, code, ssb). The > frequency is what matters for loss. The higher the frequency the more the > loss matters. If you were doing 80 meters then you can use a piece of > string for coax. On microwave you better not have any loss. VHF is Very > High Frequency and Marine is above 2 meter so loss is important. At 100 > feetish of coax if you use something with high loss you are going to see a > big drop in your receive and how good your transmit is. Get good low loss > cable trust me. Even though it's more important for a repeater try not to > use LMR 400. Much too big for a mast anyway but anything like it has issues > as well. The foil tends to causes some issues with noise on the radio. > > Vern > > I didn't want to go into the gory details but what I was implying was if he was trying to dig that DX station out of the static on 2 meters, he needed all the help he could get. Seldom are we attempting to communicate at the hairy edge of signal strength on VHF so it's of less importance. Most of the time the curvature of the earth cuts off VHF communications before signal strength due to distance does, so if we lose a couple of db to coax, it isn't as important. That was my point. I've operated at 1.5 watts into a repeater 150 miles away on FM. Of course I was on the Appalachian Trail and the repeater was on a 2000' tower. Signals were quite readable. So the loss of a couple of DB in a piece of coax using a 25 watt radio where the effective distance is usually 25 miles is a moot point. Sure there are extreme situations where you want to talk with the CG at 75 miles out and they have the tall tower, but that's the extreme. If you are really anal go with hard line. Otherwise stick with 8X. Jim. _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [email protected] To unsubscribe send an email to [email protected] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [email protected] To unsubscribe send an email to [email protected] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
