If you've got an opinion on the best inexpensive current balun, I'd love to hear it. I need a couple of baluns for use with the set of vertical dipoles that I plan to use for my second radio - and I'
Ok - so the goal here is to increase my competiveness for medium duty contest use. Primarily in domestic contests like Sweepstakes and the CQP. I am near S.F. in 6-land. My "main" antenna system will
Many folks have answered the "how far from the dirt" and "how do I get the rebar off the ground" questions - but no one seems to have tackled the "do I really need a rebar cage" question. Coincidenta
In olden times, we had a fixed mast that supported the tri-bander and the 40/80M inverted V. All was well. Then the bright young son (yours truly) installed a 70' crank-up tower. Much better for the
I appeal to the collective wisdom and those better equiped with reference material than I to verify what I have been told about my new (used) mast. The mast is identified as 2" o.d., 1/4" wall, E1020
Is there a rule of thumb about what percentage of the mast should extend down into the tower to the rotor, vs. what percentage should extend out to the top of the tower to hold the antennas? Thanks,
I am about to pick one of these up used. I plan to use it for a single tower single-op station, probably with a tri-bander and a 2 element 40M beam plus wires. If anyone has any experiences to report
Learned friends, I am about to install a used Hygain HG70HD 70 foot heavy duty (relatively just above the top of the tower, and some kind of ~5 sq. foot 2 element 40 meter yagi about 10 feet above th
Just hoping that the assembled brain-trust can clarify a couple of things. All of the below pertains to my planned installation of 10, 15, 20 and 40 meter coverage on a heavy duty 70 foot crank up wi
I would rebuild it into a 6 element OWA yagi. I did this with a 105CA with excellent results. The 46' boom is a bit shorter than the designed for 48' boom, but I'm sure you could tweek the design w/
Nope. Should work just fine. The only critical piece is the electrical length of the feedlines from the "switching network" to the antennas. Those lines must all be the same length - electrically. Y
I have had great luck with a set of vertical dipoles for 10-20. I use them as back-up second radio transmit antennas, but they work wonderfully as receive antennas too. I would build vertical dipoles
Flame Suit On You could just get rid of the TH7 and get an antenna with no traps - like a C-31XR... Said with tongue firmly planted in cheek. Best 73, **dan, K6IF See you all in the California QSO P
Remember, it is the effective diameter of the element that matters, not (in this case) the material, or the fact that it is tubing vs wire. You can easily increase the effective diameter of a wire an
I vaguely recall a thread on this in the past, so my apologies if this is a repeat. I can't find the old thread in the archives... I have recently isolated my rotor controller box as the source of a
I consider BuryFlex (tm) to be the best 'low loss' cable in the RG-8 class. It is ~$.59/ft. the last time I looked. That said, nothing can beat 75 ohm CATV hardline. It is extremely low loss, and fre
Well, I'll try an answer to the "how do I build the elements" part of the multi-part question :-) I would at least try the obvious approach. Take one element down. Build a stinger using 1 1/8" down t
I'm thinking about using standard "heavy duty" 16 guage 1.25" steel TV mast as a temporary support for the middle of my trap dipole. This is not "telescoping" push-up mast, but rather the standard st
I was pretty impressed until I got to the following sentence in the instruction manual: Warning: Isotruss towers are not meant to be scaled or climbed. Do not climb this tower for any reason!! Oh wel
At the risk of being annoying, this topic has been debated at length in the past. Please read the archive, conveniently provided by our own KA9FOX at http://www.qth.com/ka9fox/elev-guy.txt . Everythi