The steps I have here came from Create in Japan back when Orion was their US distributor. They are made of rebar, about 3/4" and welded to a bracket and also a muffler clamp. All galvanized after wel
1 inch. As long as no part of the antenna or mount scrapes the tower you are OK. Carl KM1H _______________________________________________ _______________________________________________ TowerTalk ma
My take on the subject from many years of 80/160M operation at different locations is as follows: Superb to very good ground such as a salt water marsh, a fresh water swamp with plenty of dead vegata
The 1" was somewhat tongue in cheek. However the 1' in order to clear a coax loop is somewhat arbitrary and not supported by actual needs. My home made boom to mast plates are 6" to 12" tall. With a
Frank has the good fortune of having decent ground conductivity, not all of us have that luxury. Carl KM1H _______________________________________________ ____________________________________________
I dont need to Google anything. I suggest that you do the reading on what happens to the near field elevation pattern as a function of ground resistance. If you need assistance consult with a broadca
Depending upon the length of the mast and the arrays that are on it there is going to be some moderate to strong imbalance that will kick the mast out at the bottom when releasing the rotator clamps.
I dont remember the details from NEC, Dean Straw, N6BV, did the modeling when he lived in the next town. All I can say was that going elevated made a huge performance improvement. Carl KM1H _________
Have you tried Cushcraft? Carl KM1H _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contes
The plated clamps I bought in bulk directly from Dorman in 1983 were in the $.30 to .75 range from 1 1/4 to 3". The plating is still fair and no nasty rust, just light and still on the surface. I rem
Electrical supply and CATV suppliers in some areas have sectional ground rods that can be stacked as needed. They came in 8' or 10' lengths when I last looked many years ago. Carl KM1H ______________
That is a 43 mix and a good choice; that is what I use on my 6M yagis. Six to eight is adequate. Carl KM1H _______________________________________________ ____________________________________________
It aint easy getting 5 turns of RG-213 thru a 2.4" OD dia toroid! The definitve tests for Fairite 43 Mix beads as a sleeve balun was done in the early 80's and published in Scuttlebut and most likely
On higher HF and 6M simply winding all the turns in one direction adds a lot of capacitance which defeats the effectiveness. Using RG-142 or RG-303 has been popular for decades on these toroids. Wind
By going from the conventional to the crossover method I was able to get a G5RV to cooperate that I was using at the summer cottage decades ago. No amount of twidling of the conventional turns worked
My shop currently has a 8757A, 8753B and an assortment of SA's, sig gens, sweeper, NF meter, cal sets, etc. Older technology but more than adequate for my needs. Plus they show up at rather distress
I see no reason why tinned stranded wire couldnt be used since the oxidation issue of bare copper is minimized. However 2/0 is ridiculous for ham towers, perhaps it is a typo in the regs and they mea
Until someone comes out with a VNA that does excellent work thru 24GHz for $1000 I'll have to rely on the old workhorse. Im very familiar with the 8510, used it and the other models I have for many
What I find strange is that the prior NEC grounding codes were sufficient for decades upon decades. So why the sudden change? Do they qualify their reasoning? Is it via a "concensus" which is like tr
Even side mounted near the top but upside down? Lots of commercial 2 way sticks are mounted that way sharing a common side arm. Carl KM1H _______________________________________________ ____________