Have you suspected the shorting stub between your two elements? Pull off the coax at the bottom of the tower and put an Ohm meter up the line. You should get a very low DC resistance reading. If it's
John: I am attaching two scans of sheets from an old TriEx catalog on this tower. Sorry, but I don't have more data. I could find no date in this catalog, however there is no ZIP code in their addres
Same here...I'm on the edges of the Kanas City metro area, and Kansas City Power & Light have been EXCELLENT in communicating with me me and working to find & resolve noise issues. Several have origi
If the property is close enough take a run or two when it's real wet and see if you can hear anything. _______________________________________________ LIKEWISE, IF YOU HAVE THE TIME & ACCESS, TAKE A
I rebuilt a Tri-Ex LM470 in 1999, and got the majority of my hardware (galvanized bolts, pulleys, sheaves, hardened bolts, etc.) from RH Fastener Supply Co. They are in Kansas City, MO. http://www.rh
IMHO buying a new factory base is the right thing to do. Following the manufacture's specs may cost more, but will give you peace of mind when the big winds blow, the codes enforcement and insurance
This is an interesting thread, hope it stays for a while! I too have CCTV on my to-do list, a camera on the tower, maybe one by the base, a few others scattered around the home QTH. Because of instal
Cleaning house. Found an Alliance (CDE) U110 controller and a TR2C rotor. I think these are a pair, but not sure (controller has 4 contacts, rotor has eight). They have been in storage over 10 years,
My apologies if this is too far off topic... I have several commercial AC and telco line surge suppressors which are surplus to my needs. They are: 1 ea) Motorola RRX4034B (HUNT Model HE500S) AC line
Rotor control box, Alliance (CDR) Model U110. The controller lights up, puts out around 14VAC, and the solenoid works. Photos available. $20 + shipping. Also, free if you want it and are willing to p
No...they interchangeable. Make sure you have the the SDX and DXA pin outs properly paired, but otherwise there should be no issues. 73 Dan K0DAN Has any one had any experience with controlling a Yae
I have four David Clark Headset Stations P/N 40380G-05 I would like to sell. They are used, but in like-new condition. I believe these were used as headset interface boxes on the pump panel of fire t
You could try loading the tower...there are many articles and ideas online how to make your tower an efficient radiator (at some frequencies). Another idea, if you have a patio, or deck, or wrought i
I have used several of the Yaesu SDX/DXA rotors in a Tri-Ex LM470 tower. I was able to transfer the Yaesu bolt patterns to the "Ham-M" base plate, then drill new holes. Works like a champ. Can't addr
If you disconnect the controller & rotor try sending about 12-18VDC up pins 4 & 5 to the motor. It should turn, and if you swap the +/- it should reverse directions. The controller should put 12-18VD
Hi Bill... I doubt there is anything commercially made, due to liability and supply/demand issues, but I have contemplated this project before (and never took action on it). OK, so I have an LM470 fo
Any voltage across pins 4-5 that's >18V should be good, provided the control box power supply can sustain the current (I don't know how much current) under load. How long is your cable run to the rot
I think I have a number of these, New Old Stock (NOS), will have to look around in the barn, in case anyone is interested. I also have a bunch of Phelps Dodge and Decibel products mounting hardware,
Hello TT group! I am cleaning house again. This time I have a large inventory of antenna and tower hardware, much of it New Old Stock (N.O.S.) stored out-of-the-weather the past 20+ years in my utili
Another improvised "leverage amplifier" is a large tire iron used to mount/unmount truck tires. Years ago a contractor gave me one of these, it's about 5' long made of really hard 3/4" steel. It does