If the roof can support the load, a stand-alone base with a mast might be all you need. These bases used to be made of a wooden structure with sand bags on it to weight it down and resist the overtur
Norm There should be no difference. If you want to discuss the tower design, call Remigio Fernandez at US Tower. He's the engineer whose name is on the PE wet-stamp structural drawings. Orient the ba
Don You might want to look into getting a NN4ZZ TiltPlate. I have a tiltover tower, and with the TiltPlate was able to build my Yagi standing on the ground. The antenna lays flat when tilted over. No
Another thing to consider is that with a fixed multi-mono yagi design, all the gain and F/B specs are at the design frequency. If the design freq is 14200 KHz, then the gain and F/B degrade at 14020
Jorge Would the wire yagi be fixed toward one direction? If so, I'd go for the steerable 4-square. 73, Steve N6SJ My experience from this location, fairly flat land, too far north and too far inland,
Try Chris KF7P. He makes them. 73, Steve N6SJ I have an older tower manufactured by Trusteo Tower, the predecessor to US Tower. The Model is the HDX-572. This is also the model for the current tower
Kent Sounds like you're on our Butano Sandstone Formation here in the Santa Cruz Mountains. When I put up my UST HDX-589 I had the same soil conditions. I hired an outfit with a small excavator to di
Peter I had the same problem on my crank up tower. I used a cable sweep made by Chris KF7P, in Utah. It is galvanized and mounts in place of the top cable arm. 73, Steve N6SJ Hello all, I?m using an
Doug I'm pretty sure that's the maximum dead weight the cable is spec'd for. Sure there is a safety factor, but you shouldn't encroach on it much. More important is how much wind load 200 pounds of a
I use Davis Bury-Flex for my rotor loop. To protect it from abrasion, I put it through a section of heavy duty flexible garden hose. 73, Steve N6SJ Hi, I've typically used RG 214 for rotor loops with
John Mine is coiled around the mast just above the flat top of the HDX 589. When the coils expand and contract during turning, they sometimes catch a corner of the flat top of the tower. The hose let
Installing microwave radio systems for Harris Corporation over 20 years, I had to obtain building permits for many new towers (eg. 100-300', both guyed and self-supporting). The engineering calculati
Bob I coil my 100' of Davis Bury-Flex into a figure-eight flake at the bottom when I lower the HDX-589. I've never had any kinking issues since I started doing that. 73, Steve N6SJ I have a 380 foot
Kelly I tape about 4 or 5 sixteen penny nails to the tip of my arrow. That is usually enough weight to get it to come down through the branches. I also grab the 8# test line just as I see the arrow c
Kelly I also found a cross bow (Big 5 Sporting Goods etc.) to be much more effective than a bow or slingshot. 73, Steve N6SJ Anyone have any advice for getting the fishing line to come back to ground
Cal Has anyone taken a good SW receiver to the property with a reasonable HF antenna and listened to the local noise level at different times? Part 15 diathermy machines are said to be the worst RFI
Probably a high wattage 50-Ohm resistor inside that "broadband" balun... 73, Steve N6SJ First there was the Gotham Vertical. Then the infamous Max-Com automatic antenna matcher. Now, Cushrcaft is i
It might be a Pirod tower. Pirod made all their towers with solid rod legs. Pirod is now owned by Valmont. 73, Steve N6SJ I couple of years ago I picked up a used tower that I've not seen anywhere. T
I've put in commercial microwave towers on mountain tops on bedrock. We had a soils engineer bore test holes into the rock. Then gave the soils report to a structural engineer who designed the concre
For a 150' tower, I would try to find a structural (not a civil) engineer in your area and pay him to analyze the loads you want to support on various towers you are thinking of using. Do you ever ge