I bought a used tower with an M2 rotor installed in it. It had a rubber shock mount system under the rotor. The rubber was all beat up and falling apart. I asked M2 about it, and they said that was
We use 50 ohm unbalanced to 450 ohm balanced transformers at the ends of our 450 ohm open wire line (about 250 meters long). Then the radio and antenna use short lengths of standard 50 ohm coax. We r
There is a 50 ohm to 50 ohm balun on one #43 2.4 inch toroid and a 50 ohm balanced to 450 ohm balanced transformer in cascade with this on three stacked #61 2.4 inch toroids. Works at the legal limit
OTOH, in my situation, they are always matched and see something close to 450 ohms. I put the tuner at the antenna. I wouldn't recommend running 350 meters of OWL in a mismatched condition due to the
How do you keep the steel wire from curling up like a spring? Rick N6RK _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTal
Alfa Radio in Canada is a dealer, not the manufacturer. When I bought my Alpha Spid, I had to pay a similar junk fee. Alpha didn't pay it for me, nor did they promise to do so. It makes more sense fo
FWIW, Alfa Radio (a dealer, not the manufacturer) told me early last year not to try to use the standard rotator on my MonstIR. They suggested the large model. Due to tower incompatibility, I was una
Guyed crank ups used to be available until the 1970's. The advantage of guying is that the base is much smaller and the tower can be a lot lighter for the the same windload. To really take advantage
I have a 4 element SteppIR on a GM 1850 tower with Hazer. It's gone through all the storms the last 4 years with no problem. I have one set of guys going to the top of the tower (not the Hazer). I lo
Two questions: 1. I have an HDX5106 with a 2550. I feel that this winch is overloaded, in the same way that the guys with the "little" towers feel their 1550s are overloaded. Is there something even
I tested the DXE whip. I could get just as good sensitivity using a CB whip and a passive transformer match, and with a conventional 50 ohm preamp in the line. The DXE had serious BC band overload pr
You can replace a delay line of theta degrees with a lumped equivalent consiting of a pi network having a series inductor with a reactance of Zo sin theta and two shunt capacitors with reactance of Z
The importance of radials all depends on vertical height. If you can't put out much in the way of radials, you can still get excellent results by making your vertical longer than 1/4 wavelength and/o
If you model an inverted L, you will find that add the horizontal portion does nothing for low angle vertically polarized radiation. It only produces useless high angle horizontally polarized radiat
There have been various attempts at remote station reflectors in the past. They all have little or no activity to my knowledge. There is a "remotebase" group on Google. It has a fair amount of activi
It occured to me that the solution might be to insulate the aluminum wire to protect it from corrosion. I attempted to find a vendor who would make enameled aluminum magnet wire, which I think is use
You can find a very good selection of grips from very small to very large at our old friend McMaster.com. The trick is that they are listed under "Wire Strain Relief" (page 795). See part # 69675K46.
I would like to monitor wind speed using a simple cup anemometer to determine when it is time to crank down the tower. In looking for anemometers, I have only found extremely expensive solutions that
It looks like inspeed.com is the winner. Due to the mysteries of Googology, it never came up searching under anemometer. The "Vortex Wind Sensor only" for $49 is perfect. The even sell a wind operate
Same thing happened here. The three closest houses across the street here have all sold at various times for neighborhood record prices, while my 55 foot tower & beam was up. Rick N6RK ______________