My feedline is permanently soldered to the radiator wires. Since my field/portable operation is always QRP, the insulators are cut from a sheet of 1/4 inch Lexan that I have lying around, but there is no reason that plastic from a milk container or similar could not be used instead.
As I said, I have a 25 foot length of feedline permanently affixed to mine, and I carry an additional 25 ft. length of feedline for use when needed and more convenient. I use APP connectors to attach the extra length and the balanced side of the balun has a short length of feedline with an APP on it. Think about your deployment situations and use whatever works for you. 73, Don W3FPR Frank MacDonell wrote: > Thanks Don and all who responded - I am taking your advice and > ordering the wire. I have also ordered a BLT and I am waiting for it > to arrive. > > 2 Questions - How do you terminate the ladder line with the antenna > line and what are your recommendations for supporting the antenna in > the field. Thanks a lot for your help! > FJM > > On Sat, Mar 7, 2009 at 12:15 AM, Don Wilhelm <[email protected]> wrote: > >> Frank, >> >> I do not know of a source, but contrary to other posts, the Norcal doublet >> used actual computer #26 >> IDS wire (not rotator wire). >> >> Don't get me wrong, the rotator wire will work, but it will not be as >> lightweight as one constructed of computer flat cable as the NorCal doublet >> was. >> If you want an antenna that will perform just like the NorCal doublet, use >> any kind of wire for the radiator, cut to 22 ft. on each side and feed it >> with 300 ohm ladder line. I use the #22 teflon wire offered frequently by >> N2GO on the QRP reflector for the radiating element, and use either lengths >> of the same N2GO wire twisted for the feedline or I use the 300 ohm ladder >> line. The teflon insulation is nice because it does not stick to tree limbs >> and if tangled is easy to untangle because of the 'slippery' nature of >> teflon. The antenna is the same as the NorCal doublet, but the wire is >> different. >> >> 73, >> Don W3FPR >> >> Frank MacDonell wrote: >> >>> Does anyone know where one can purchase the wire for the NorCal >>> Doublet Antenna (4 strand computer ribbon wire)? Thanks >>> >>> >>> > > > > > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.0.237 / Virus Database: 270.11.8/1987 - Release Date: 03/06/09 > 07:20:00 > > ______________________________________________________________ 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
