I'd be most tempted to install contactors in both "rotate" leads that were only closed when turning the antenna. Consider making your "common" disconnect a three pole device. 73, ... Joe, W4TV "what
As a starting point, about 78% of the pretension of the top guy wires (assuming 80% guying - or 80 foot radius for a 100 foot tower) will be converted to downward force on the tower. For your 6700#
The standard advice is to complete the ground "ring" around the house - extending counterclockwise from the 6M entry point to the service entrance. Then relocate the 4" underground conduit from the m
The garage apron which is nearly 30 feet wide by 20 feet long prevents the installation of a ground ring with the shortest route to the entrance being under the 30 feet of concrete, with the availabl
perhaps a "real> world" comparison to the Optibeam 9-5 in You're not likely to find a "heads up" comparison of the two antennas since they are so comparable. I doubt anyone has put up one of each ...
30+ years ago Wilson had tower sections made of something very much like 1 1/4" conduit, flattened at the ends, and bolted. They were "straight" so they needed to be guyed and climbing would be an is
With the limit switches in series you would not be able to move the tower off either limit. It would be better to use a 4PDT center off to switch hot/neutral or a using separate switches - one to co
The overall tower would remain in operation while the switch was in either the up or down position. However, placing it in OFF would stop the motion. Yes, a limit switch failure would still result i
The "compelling reason" is that building codes prohibit running power (12-2 w/gnd) and low voltage (coax, rotor cable) in the same conduit. You need two conduits ... 73, ... Joe, W4TV I have a Rohn 2
It seems to point to a 10 meter trap issue (just because that's the only piece left in the food chain), but a faulty 10 meter trap should cause a problem on 10 meters when it is seeing the highest vo
T2X is hardly adequate with the basic 4 element 20-10 meter yagi. The boom is overly flexible and the constant motion really beats up a rotator. The "trombone" elements and longer boom of the DB36 ma
No. The traps on the A3WS are resonant on 12 meters (covers 17 and 12 meters) vs. 15 and 10 meters on the A3 (covers 20, 15 and 10 meters). 73, ... Joe, W4TV Are the traps for the A-WS interchangeab
On the other hand, stealing another manufacturer's designs by copying his schematic and making minor changes is not in the ham spirit either. Sometimes the only way to protect one's intellectual prop
Lack of a good radial system only causes the low angle performance to suffer while typically not impacting the high angle performance as much. For "close in" stations - even NVIS - one is better serv
While that may be true for you on the left coast (the land of fruits and flakes), it is most certainly untrue for those in W3, W4, W8, W9 and W0. Most QSOs for those in flyover country are at takeoff
Of course they do. Except at night in the middle of winter there is no "skip zone" on 80/40 meters. The presence or absence of the skip zone indicates that ability of the ionoshpere (density) to ref
The SteppIR is a shortened dipole (end loaded). Radiation pattern would typically be within 0.5 to 1 dB of a "flat" full size dipole at the same height. Maximum radiation is broadside to the boom - a
On 10/24/2015 9:49 AM, Daniel Danny Horvat wrote: Verticals, R5/R7 R6000 R8 and also clones AV620, AV640 are IMO better than 43 foot verticals or even worse CHA250 and clone verticals. There are numb
Larry, There was a two band vertical in QST some years ago ... consisted of a single vertical with an L-network designed to match both bands. I think one of the follow up articles included info on 17
Check the properties of peanut oil before you use it. I can't quickly find the breakdown voltage for peanut oil ... dielectric constant is slightly higher (3 vs. 2.2) and dissipation factory almost 1