Ron, I had binding problems with my MA-770MDP with the rotating base. The primary culprit was the coupling between the rotor and the tower drive shaft. Having no instructions, I tightened the nut on
I asked the same question. A fellow from Tennadyne explained that if the wind load is high enough, the Slipp-Nott will in fact slip before the guts of the rotor are torn up. I guess that's a believab
TowerTalkians, I need your expert advice. I climb for a friend who has a 100' Rohn 45 tower. When the big Nor'easter tore through New England recently, a large tree fell on one of his top guys. Lucki
There's really no point driving the rod in further if it will only be embeded in rock or roots. That's not ground and will do you no good. It would be one thing if you knew you would find ground once
There are three pictures of conduit terminations on my website, www.wc1m.com, under Cabling. The site is still under construction -- I have a lot of pictures to upload. Look at the pictures of the m
Excellent advice on conduits, Bill. I agree with almost everything. Here are some comments: 1. Water in conduit I have read many, many posts here about drilling holes in conduit to let the water esca
This is why I makes sure the screw heads on all my hose clamps face the same direction... :-) 73, Dick WC1M _______________________________________________ __________________________________________
I faced a similar problem -- long path around the house to the service panel house (<50 feet). I connected a run of 1/0 copper ground wire between the single-point ground and the service panel. 73, D
Bill, I've been following your exploits on the SteppIR reflector, too. Jim's suggestions are excellent, and I would do all of the tests he recommends. They're easy to do. Do you have a copy of SteppI
I remember reading on the SteppIR reflector about the driver chips being current sources and how this makes the cable length irrelevant, except for added capacitance. I understand that added capacita
I agree that this would be a good test, but given the hassle I would opt for trying a different power supply first -- provided the resistances still check out OK and SteppIR endorses the test. If you
I don't want to shift the discussion too far from the original problem, so I started a related thread for everyone to chew on. I have a 4-el SteppIR at 96' at the end of a 350' cable (plus or minus 1
I don't think this scenario is possible if the resistance between pairs is nominal. When the cable is disconnected from the controller, the motors are completely isolated from one another (provided t
I sent a variation on this post to Jerry at SteppIR this afternoon: I've been thinking about the problem, too, and I've come to the conclusion that the power supply test won't reveal much -- only whe
The 16-conductor cable for the MonstIR and 4-el uses #22 gauge stranded wire. Before you do anything, you should contact SteppIR to verify that they have tested the antennas and controller with a ca
Right, and multiple SteppIRs on multiple towers would be far more expensive than multiple monobanders on multiple towers. Makes no sense. However, for a single-tower SO2R or M/S/2 contest station, a
I did this recently. In both cases, read and reread the manufacturer's instructions. They do make sense after you read them several time. The most important thing I found out about installing Philly
Not if you know where to buy them. Brand-new 10' straight sections of Radian Rohn 55G are listed for $236.31 each from Hill Radio Communications, a very reliable vendor. Interesting that the price i
Nice pics, Roger. I've never packed my one-shots, but wish I had thought to do that. I've had molten material run out of a couple of them. Then again, I've done a couple of dozen of them without pack
I'd like to know the answers to Jerry's questions #1 and #2 below, too. Also, what make and model DVM was used to make the measurements? Was the resistance of the leads checked and subtracted from th