That's hardly believable. How was it measured? a Bird wattmeter accuracy is only +- 5%. A network analyzer or a TDR in return loss mode (Bird SA-6000 or Anritsu equivalent) would be required to measu
Yes! Very warm! 73 Jim W7RY If it really had .5 Db loss wouldn't it get very warm at legal ham powers? _______________________________________________ _______________________________________________
@1500 watts, .5 dB loss would be 151 watts! I bet you could feel and smell that in a PL-259! 73 Jim W7RY _______________________________________________ ______________________________________________
They were most likely damaged taking them apart with a jack since they were damage at the end of the section. I would have bought them and had them welded back together. They are too had to find (at
I don't like the swinging gate from IIX. Here's why. The mounts only clamps to ONE leg of the tower. You have to tighten the U bolts too tight to get the mount not to turn. This puts way too much pre
Agreed Arne! That is the way I'm going to make mine. No need for the extra piece welded to the angle under the rotor plate. I neglected to mention that. 73 Jim W7RY -- From: <N7KA@comcast.net> Sent:
Yes. It will fit. BUT.... You either need to put it inside of the tower when your building it, and/or cut one of the horizontal braces to get it in and out. If you put it at a joint, you don't really
Yup! That works too. How did you handle the "bearing" above the rotor? Just a short piece of pipe larger than the mast? Most folks don't have a lower mast support for their Ham-4 or Tailtwister thoug
Does the real estate agent (all real estate agents are not necessarily Realtors) have errors and omissions insurance? Sounds like they may need it... 73 Jim W7RY _____________________________________
AVA5 connectors and LDF connectors are NOT interchangeable. LDF connectors will NOT fit on AVA cable. Andrew (notice no s after Andrew) no longer makes LDF5. If you buy it, it's either used or new ol
Andrew has been owned by Comscope for many years now. AVA5-50 replaced LDF5-50 which is 50 ohm 7/8" nominal diameter Heliax. LDF4-50 is still available and has been on the market for at least 15+ yea
Does anyone know if there is a Rohn distributor in the Portland area? How about Seattle? I'm looking for a couple of 45 sections and possibly a 50-60' Rohn 25 tower. Thanks! 73 Jim W7RY _____________
Why would you want to? They are great bug eaters and cause little problems. You can install bat houses and they will eventually start living in them. Do you have problems with them in your attic? If
Too much dissimilar metal. Good idea though. Thanks for sharing. 73 Jim W7RY _______________________________________________ _______________________________________________ TowerTalk mailing list Tow
Stainless is not the fix all for galvanic reactions/issues. The barrel itself would still be in contact with the aluminum. 73 Jim W7RY -- From: "Ron W8RJL" <youngron@verizon.net> Sent: Thursday, Marc
As I remember, LMR-400 is pretty light! With a foil shield and little braid, and it's copper clad aluminum center, and the highly porous foam, it is pretty light. And you are correct! It's not very f
Or the jacket has contaminated the braid by out-gassing. The coax was probably MUCH older that anyone though it was. 73 Jim W7RY _______________________________________________ ______________________
I subscribe to a tower industry publication and NOT all tower deaths are related to the cellular industry. Many tower deaths have happened in the BROADCAST industry too. I used to be in the tower bus
Thinking of replacing my TH7 (@70) with a Force 12 CX31. I have a Cushcraft XM-240 mounted about 10 feet above the TH7 now. What is your opinion of the CX31? Separate feed lines or just one? They are
How about good ol fashioned heavy duty black tie-wraps? 73 Jim W7RY A good way to secure cables to tower legs is to use Deltec. It's made by T&B and available from Graybar or other distribution compa