In my opinion, one of the most effective antennas I have used is a rotatable trap dipole such as the Cushcraft D3, D3W and D4. I have used them all. Advantages: Single support, easier to get up at a reasonable height than a dipole and no drooping ends as in inverted V. They are a bit pricey, but are sturdy. I mount them at the top of trees on my property, placing them (with the help of radiation angle/terrain software}at strategic locations to take advantage of the extreme sloping foreground that is my property.
Alan, N3BJ Bent Mountain, VA ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; <[email protected]> Sent: Monday, July 05, 2004 5:37 AM Subject: [Elecraft] Multi Band Dipoles > > > > > snip > > It confirms the very dismal performance of *all* those "popular" HF short > loading-coil verticals in comparison to the most simple, basic, inexpensive > quarter-wave vertical. TANSTAAFL! > > Likewise, the horizontal antenna comparisons confirm the overall > superiority of a simple dipole over other horizontal types being tested. > > snip > > Mike, I've only been at this game for 12 months so can't really comment on > the comparisons but my multi band dipole works a treat. It is a home brew > set up with 3 horizontal dipoles cut for 80/40/20m one above the other with > about 1-2 feet separation at the ends. All on the same coax with no balun > or ground connection. The wire is cheap annealed solid copper PVC insulated > mains wiring cable 2.5 sq mm (slightly larger than your #14AWG). The 80m > wires take the full weight with no problems and I keep a lot of tension on > it using a very heavy weight and a pulley. The centre is at about 25feet > and the ends at 30 feet and the whole thing is pretty much in the clear. > > You need plenty of patience to get everything resonant with lots of ladder > climbing, hanging out of loft windows and hoisting up and down but now I > have swr between 1.3 and 1.0 on 80,40,20 & 15. As I say I can't compare > with anything else but I get great reports with qrp using this arrangement. > When I get the time will probably put up another dipole for 30m. > > Martin > M0KWV > K1#1534 > > > > Why not take a look at our Web site? > http://www.simoncarves.com > > ************************************************************************* > The information in this email and any attachments may contain > privileged and/or confidential information intended solely for > the use of the individual or entity to whom it is addressed. > If the reader of this email is not the intended addressee, or the > employee or agent responsible to deliver it to the addressee, > you are hereby notified that any dissemination, distribution or > copying of this communication is strictly prohibited. > If you have received this communication in error, please notify > me by telephone or email and delete all copies immediately. > ************************************************************************* > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
