Make sure you have a good current balun on the inverted vee so the feedline doesn't act as a vertical ( =noisy ) antenna. The only acceptable balun IMHO is about 15 turns of RG58 coax wound around a
On 160 meters, several thousand feet is only a handfull of wavelengths. I can show you plenty of locations several thousand feet from anything that have lots of power line noise. My own vertical is
So-called "2 1/2 inch" water pipe or conduit has an OD of 2 7/8 inches. Thinwall 3 inch conduit has an ID of 2.9 inches. This allows for a 12.5 mil gap, theoretically. This might work for tubing in p
You can use aluminum stovepipe tape to bridge the gap. Rick N6RK _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@conte
You don't understand what I meant. I transition between pipe sizes with PVC pipe couplers. This gives me an insulated joint. If I don't want an insulated joint, I "aluminum plate" the PVC pipe with t
Any inverted vee is a much better receive antenna that any vertical at my QTY. So at least at my QTH, it's just a fact. Now if I drive my mobile to a place with no power lines, the receive noise duri
Local manmade noise may start out randomly polarized. However, only the vertically polarized component can propagate by ground wave. This is well known physics. The horizontal component is rapidly a
My vertical is feed by open wire line through a balun transformer. It is very well decoupled from the feedline. Not to mention it is fed against a massive ground screen. It is extremely noisy on rece
FWIW, I just bought a bunch of aluminum wire for $3 a pound. It works out to about 1 cent per foot. It may or may not corrode, depending on your soil. I am going to try it and see how it works out in
I had just been to Home Depot (which has real time pricing) and knew the real price of wire. I went into an Ace Hardware and noticed that the prices were out of date by a factor of >2. I have to admi
Because of skin effect, the RF conductivity ratio is the square root of 65%, which is 81%. Rick N6RK _______________________________________________ _______________________________________________ To
I bought alloy 1100 soft annealed. Basically, pure aluminum. They sell it as "tie wire", to tie by hand to package stuff. Pure aluminum is supposed to be the most corrosion proof, AFAIK. Rick N6RK __
I just asked MWS Industries (the big magnet wire company) about aluminum wire with formvar. They said they don't make any insulated aluminum wire. I will note that insulated copper house wire is actu
A much better solution than either CJ or trailer connector pigtails is at this URL: http://www.deutschipd.com/Products/DT_Series/dt_series.html Real waterproof connectors that mount right on the end
I never recommended them for DC power purposes. I recommended them for rotators. I use Anderson Powerpoles for all DC power. dcpwr.com has one of the most complete lines of Powerpole parts; a lot of
Do yourself a favor and use top loading wires. I simply fasten the top loading wires to the top set of guy ropes using "ty-raps" (use the black UV proof type). You can eliminate or reduce the loading
Interesting that you should mention A/B'ing. I did a lot of A/B'ing of 40 meter inverted vee's at 30, 60, and 90 ft. I thought the 90 ft one would have a substantial advantage over the lower ones, b
No I didn't overlook that. I installed remote relays that disconnected both halves of the unused inverted vee from the coax. The antenna under test was terminated in 50 ohms at all times. Yes I did t
Yes my inverted vee's were resonant. Again, I had relays that opened up the feed points of the unused antennas. EZNEC will show voltage induced, however, a floating quarter wave will not experience m
When I have gotten permits for towers or other buildings, the taxing authority has simply mechanically increased the valuation by the amount of construction cost, which must be declared on the permit