Hi All I have a homebrew 2-el 20 meter monobander and I would like to add a 15 meter 2-el on the same boom. I have only been able to find commercial antennas, but nothing for building one. Does anyon
Author: Herbert Schoenbohm <herbert.schoenbohm@gmail.com>
Date: Thu, 3 Nov 2016 13:41:06 -0400
Easy as I have done this with an insulated driven 15 meter element spaced about a foot away from the 20 meter element. The so called single feed line parasleve concept works well but the 20 meter DE
I would like to see that. It would work well for my son John J. Nistico 911 Electric Inc. 516.325-8993 I've done that. Check next link; http://www.ea1ddo.es/Quad_Bibanda.php Cubica Bibanda, Quad Duob
That is why I asked the question :-) I could just stick a 2-el 15 on the boom and call it good, but don't think it is that easy. I know there are a lot of beams out there that just look like they sti
Yes, Force 12 has done it for years. The C3 series of antennas are overlaid 2 elements for 20/15/10 meters with parasitic coupling from the 20 meter DE to the 10 and 15 meter DEs. The general concept
It is not too difficult to design a small interlaced multi-band beam but I have had a lot of trouble designing a larger multibander with many elements. Kudos to Yagi designers like N6BT, DF2BO, G0KSC
In the wayback, the 70s, I had a Wilson DB-54 which I was quite pleased with .. not so hot on 15m, but pretty much a laser on 20m! Had a 6 L 10m Wilson on top of mast -- worky worky! You might look f
Some of us remember Wilson antennas. Wilson sold aluminum and if their antennas had any significant gain you were fortunate. Doug I wasn't born in Saskatchewan, but I got here as soon as I could. --O
I remember back when I had a Gotham quad. Piece of crap antenna, right?? Would never work according to the models, right?? With aluminum spreaders no way it could work, right?? Had it on a 30 foot pu
Some of us remember Wilson antennas. Wilson sold aluminum and if their antennas had any significant gain you were fortunate. Doug a dud. They didnt use software to design em..fubar, nor did they fact
I remember back when I had a Gotham quad. Piece of crap antenna, right?? Would never work according to the models, right?? With aluminum spreaders no way it could work, right?? Had it on a 30 foot pu
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Sun, 6 Nov 2016 01:51:06 -0500
The KLMs came out in the late 60s or early 70s. They worked well for antennas of the day. I had 5L on 20 and 6L on 15. Mine "appeared" to have gain, or were at least directive. IIRC they used dual DE
The KLMs came out in the late 60s or early 70s. They worked well for antennas of the day. I had 5L on 20 and 6L on 15. Mine "appeared" to have gain, or were at least directive. IIRC they used dual DE
Hy Gain still uses the dual DE on their TH-7DX but not sure how many of those they are selling these days with all the other choices out there. 73, Steve, WD8NPL The KLMs came out in the late 60s or
hmm.... really? Don't hold a pattern? The testing I did on the 40M4LLDD showed quite good FB across the band with a measured ~15 db at the bottom, a peak around 30 at around 7.13 and still a good 15
hmm.... really? Don't hold a pattern? The testing I did on the 40M4LLDD showed quite good FB across the band with a measured ~15 db at the bottom, a peak around 30 at around 7.13 and still a good 15
considering the alternative - relays and coils as you say which I'm not against at all and am a bit surprised they're not used more ... I have a F12 Magnum 80 dipole with 3 relays and it use to cover
Would be interesting to know the answer to your remark, apparently they are selling enough that they continue to offer it in their catalog. I have two (one up and one down which I use for spare parts