In addition, with #3 I would make sure I had at least four radials per band - even if I used multiband radials (like trapped/fan dipoles or the Bencher "Stub tuned radials") as the pattern gets very
Contact an agent ... there has been a lot of speculation here but since you are a renter special issues are at play. Renters insurance generally covers contents - not structures on a property even if
Note, the delay is a safety measure to prevent the tower from "running away." A single phase motor will continue to run in the current direction it any time power is applied. Because of this, it is
In addition to chokes, I would make sure the shield of any feedline is connected to the MAST (for boom fed yagis) or the ground system (for shunt fed towers) and would disconnect any feedline that i
John, There is only one commercially available "band decoder" that will switch antennas *within* a band ... that's the microHAM Station Master. Any of the other switches decode the band based on a BC
The 6BTV would have several traps in circuit on both 80 and 40 meters. Efficiency would be a lot lower than any of the other three you mention given that the full height is active for each of them.
Are you looking for something like this? http://radiobooks.com/products/svdxii.htm Might be a bit more involved than you want ,,, preamp and filtering on the receive antennas but it will set between
Look at the base casting ... there should be a "series" number stamped into the base. 73, ... Joe, W4TV _______________________________________________ ______________________________________________
Then it's a HAM-V (Ham 5). Updated HAM IV IIRC, the full "decode" is HAM 5 manufactured June 2004. 73, ... Joe, W4TV _______________________________________________ _________________________________
T2X uses same wiring as HAM II/III/IV/V. The difference is a larger casting (with through bolts) and a third bearing race. The only difference in the controllers between T2X and HAM IV/V is the addi
They do now ... but they used the terminal strips for more than 25 years. There are a lot of old T2X out there that have never been converted to pigtail. I don't care for the Cinch Jones plug ... it
The TB-1 and TM traps are almost certainly not the same. If you look at the manuals for the A3WS and A103 (10 meter add-on), the TB-1 is the inner (12 Meter) trap on the A3WS; it would be resonant a
Dean has made it clear that he uses a simple isotropic source of the specified gain. Realize that the use of an isotropic source (e.g. no F/S in the vertical plane) also effects the final pattern by
What are the specs? www.mgs4u.com has 1.5" x 8' solid rod for $59.00 or 2" x 1/4" wall x 8' tubing for $69.00 73, ... Joe, W4TV _______________________________________________ _______________________
When the MFJ/Hy-Gain broke, it was generally not from a single event failure (one large wind) but from work hardening. The elements had mechanical resonance which was excited under certain wind cond
There is also a piece in one of the ARRL Antenna Compendiums or "Wire Antenna" books that comes from QST some 30 years or more ago. There are two possible designs ... one in which the Xl is high eno
Insert a shorted 1/4 wave 160 meter stub (1/4 wave x Vf on 1.840) in the gap. You have an open circuit on 160 and a short on 80. 73, ... Joe, W4TV _______________________________________________ ___
My BS detector went off when Chip claimed that standard modeling tools NEC-2/NEC-4 were inaccurate when it cable to *his* fractal antennas. If they're suitable for a log-periodic dipole array (which
How about making it even more simple? "X category: Use of any technology to reduce operator effort, including but not limited to computer logging, automatic transmission (memory keyers, digital voice
Unfortunately, the Tennadyne Antenna Fact #5 has a significant error. It calculates the Gain factor "G" using dBd and not dBi. Using dBd understates the gain factor by 2.1 dB (or about 60%). That ma