I am looking for any information, wiring diagram, etc on the Loudenboomer Rotator. Used to be made in Kansas City I believe. I acquired one through an estate sale and the people said it was not worki
Frank, Thanks for the specs. I have never have these numbers before. Mark asked me if I had all the specs but I have about a dozen sheets that tell how to put it together and that's it. However, I ha
Ron, My Andrew catalog rates LDF4-50A with their L4NM connectors at 6.31 KW at 30 MHz.. Of course, as you go down in frequency the power handling goes up. I have never had any problems with the coax
I have had over 100 middle aged members of our Scottsdale Ski Club yelling and screaming like teenagers on at least three occasions with a 110 ft rotating tower on the South side and a 150 ft tower o
Kelly, The upkeep and painting of the Oakland Bay Bridge and Golden Gate Bridge is an ongoing paint job as I understand it. I think that says it all. 73 N7RT _________________________________________
I am looking for a new belt. Anyone have any suggestions? 73 N7RT as let like the idea of putting all my eggs in one harness basket, as it were. If the single harness were to fail while I'm aloft (th
Hi All, Let me toss my hat into the ring here and tell you my experiences about lightning. When I erected my two towers, I grounded them very well. There was an article by a W5 out in West Texas that
I recently acquired some Rohn 45 from an estate sale but there was no hardware. Does anyone know what type of bolts are used to bolt the sections together? Do they have to be Grade 3, Grade 8, stainl
All, Anyone out there familiar with the HP8753 series of network analyzers? I have one that needs fixing. Please email me direct. Tks Hardy N7RT _______________________________________________ ______
Gordon, 1) The two connector types are not interchangeable. 2) The center pin assemblies are soldered with high temp solder so don't over heat the center pins when removing them from the center condu
John, I have a top section of Rohn 45 that is tapered and the hole is 2 9/16" diameter. N7RT _______________________________________________ _______________________________________________ TowerTalk
All, I am at a point where I am wiring up some latching relays to control my 80 meter beam switching from Phone to CW. It would simplify things if I would just use the coax shield as the +24 VDC retu
Jim, Thanks mucho! I will proceed with your suggestions. 73 Hardy N7RT _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk
Mark, That's exactly how I do it but I knew the day would come when the "pucker factor" would be too much for me to climb 2" masts. That's why I started with 3" high strength steel with 1/4 inch wall
Hi TT's Just to add to the experience of raising towers, I had a crane come in and raise 140 ft of AB105. The lifting point was at 100 feet, all 3 guy wires were attached, all the coaxes were strung,
Jim, With 2½ acres, tying everything together becomes an expensive and daunting task. One tower is 150 ft from the house. Any suggestions? Hardy N7RT __________________________________________
Jeff, I had a KLM 4el "Big Sticker" 40 meter and was plagued with insulators deteriorating in the heat and ultra violet of the Arizona sun. I made some Lexan insulators that worked ok. I finally gave
Jeff, When I converted my Big Sticker over to a 3 el 30 meter beam the old boom to element clamps lasted about a year. I got the new boom to element clamps from DX Engineering. I am happy with them s
Also much easier to tram the antennas up and down when the last guy wire is 5 or 10 feet down. 73 Hardy N7RT _______________________________________________ __________________________________________
I lay about a turn and a half around the thrust bearing. Secure the top one foot above on the mast, the bottom through a compression clamp, the type with the rubber inserts. The coax only needs to un