IdiomPress makes a small illuminator board for HyGain rotor boxes which might work. It has 3 LEDs and is intended to sit on top of a meter with a clear top. It has a rectifier to get the DC voltage f
I got mine in a couple of days. It has a jumper scheme to set the intensity in addition to a height setting when soldering the LEDs. I haven't installed mine yet so I don't know how the actual intens
I have been using a Kenpro KR2000 for years but it has finally bit the dust. Some parts can been had from Yaesu who bought out the Kenpro rotator line some years ago. Mine became somewhat erratic a c
The RF Connection also sells CadWeld. _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.cont
In the Northern hemisphere, put a small stake in the ground and mark the end of the shadow, wait a few minutes and mark the end of the shadow again, the put your left foot on the first mark and the r
Making the guys visible is good. In addition, perhaps a few concrete blocks away from the guys could be done in low wall temporarily. If the contractors try to drive over it it should get their atten
Around here (NC) construction sites use an orange flexible plastic fencing for marking off natural areas that are to be left alone. That would be another choice. Places like Home Depot and Lowes have
Toward the end of the video I had a pop-up saying they were wearing safety belts under their clothes attached to the tower. 73, Larry W6NWS -- Original Message -- From: "Pete Smith N4ZR" <n4zr@contes
If you access to Leeson's "Physical Design of Yagi Antennas" (or something close to that) it covers this topic and how to "fix" it. Shoot... using the .707 figure for 45 deg I'm back right at the wor
I believe it is ON4UN's book where there was discussion of inside vs outside. If you wanted to shunt feed the tower then inside was preferable as I recall. Apparently minimizes RF on the feedlines. 7
The Polyphaser book suggests several lightning rods spaced at twice the rod length for some distance out from a tower in several directions. It presumably spreads the charge of a strike out if I reca
I did this several years ago (1984?). I assume the situation is the same now that when the truck shows up at your door with your tower YOU have to unload it. I was somewhat lucky and tied the tower (
The use of ground rods spaced at 2x the rod length was covered in the Polyphaser book on lightning and perhaps elsewhere. As I recall (it has been a few years since I read it) the idea was better dis
The radial and rods were underground. I will try to dig out the book and reread it. It has been some time (10 years?) since I last read it. There may have been more to the rationale than I remember.
I saw that too and asked about it. Feed it at an end. I don't think it matters if you go up or down. 73, Larry W6NWS I have all the materials for an inverted L, using K2AY FCP and have read his artic
Don't forget about the moment generated by the antenna. Wind pressure of 100 mph is about 40 psf IIRC. That means an antenna at 4 feet that has a wind load of about 182 lbs would deform the pipe at t
It is worth mentioning because the ice can be a significant factor. The person who asked the question will have to make an assessment whether ice is a factor in his particular situation. But there ma
I had a similar failure on a Force12 EF240X. Force uses rivets. Eventually it elongated the holes on the boom and broke the rivets and the element fell 117 feet. I fixed the element and then the foll
The EF240X was up about 8 years (a couple of hurricanes, a few Nor'easters, didn't survive the tornado). I never had trouble with the C3 I had. The EF240X elements are a bit bigger than the C3 and ha
Presumably making a wide fence (one that has some depth) deters them. I don't know if the angle pieces used on some fences (usually with barbed wire) would be sufficient or whether it means some sort