Heights Towers spec a round hole for their bases. They use 4' diameter "Sonna" tubes as forms with appropriate rebar cage. Why can't Trylon, AN Wireless, or UST? -- R. Kevin Stover ACØH K2/100
The specs for the "Big Bertha" poles are 85-150 sq ft. of load and the base is 8'x8'x12' adjusted for soil conditions. About 28.5 yards of concrete. -- R. Kevin Stover ACØH K2/100 #4684 Reclai
As an ARRL VE, and one who took and passed the pre-2000 extra class test, I can state in no uncertain terms the that ALL of the current theory tests for any class license are easier than they were in
There are few very basic things that, IMHO, all Hams should know. The basic antenna formulas, basic AC-DC theory, acceptable operating practices, FCC rules and regs. Nope, the guys who had to sit in
Hello all. Spent the weekend perusing the latest edition of ON4UN's Low Band DXing and came upon his design for a full size 3 el 40m beam. If I'm doing the conversion right that monster weighs 400+ l
Hello reflectees. Could somebody repost the link to the pictures of the cracked tower legs. In a former life I was a certified welder and can usually tell the quality of the weld by looking at it and
Thanks to all who sent me the link to the pics. It looks to me like a stress failure of the tubing rather than a weld failure. If you look at the close ups of the cracks you'll notice pretty good loo
Yep, get yer wallet out. -- R. Kevin Stover ACØH K2/100 #4684 Reclaim Your Inbox! http://www.mozilla.org/products/thunderbird _______________________________________________ See: http://www.m
I'll ditto that from family experience. My father had an HD-73 turning a Cushcraft A4 and an 11 el Hygain 2m beam 5 ft above the A4. If you believe the HD-73 specs this load shouldn't have been a pro
It's getting pretty bad out in the country side too. More and more of these 3500 sq ft monstrosities are popping up out in the middle of farm country. Sidled right up next to a farm that's been there
Dacron is a brand name (DuPont) for polyester. I've never had a problem with any of the Dacron line I've used and I've used some from Cable Xperts and DX Engineering. If you keep having failures at t
a ceramic coil from a BC-375 and a collection of leftover flashing material. Really, guys, are we supposed to believe this works? claiming less than 2:1 SWR 1.6-60 MHz. Picture looks like two christm
234/3.8 will get you in the neighborhood. -- R. Kevin Stover ACØH K2/100 #4684 Reclaim Your Inbox! http://www.mozilla.org/products/thunderbird _______________________________________________ _
It's a consumer grade switching UPS with a 500W capacity. It'll hold half load (250W) for about 14 minutes and full load for about 4.5. It's designed for PC's and has either a serial or USB connectio
If the guts of the rotator can withstand 35sqft of wind load, then is it unreasonable to ask that the mast clamp be able to also? A 16sqft load is not that big. Big tribander and a shorty 40 on the s
- -- R. Kevin Stover, ACØH --BEGIN PGP SIGNATURE-- Version: GnuPG v1.4.7 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGUuBk11jxjloa2wsRAvQeAKCbgt0HwCFp7P4iIj
The only way bolt cutters can mess up the ends is they are dull or you pussyfoot around making the cut. Get a set of bolt cutters with handles long enough to provide sufficient leverage and make the
Hi Bill. Are you using the SteppIR 33V power supply upgrade for control cable runs of longer than 200ft? - -- R. Kevin Stover, ACØH --BEGIN PGP SIGNATURE-- Version: GnuPG v1.4.7 (MingW32) Comm
The SteppIR antenna configurations are stored in the controller. There are 51 "antennas" stored in memory in the controller. These antennas we're designed using YO-Pro and EZNEC, and verified on Flui
Big difference between LPDA and mono bander. With the LPDA the antenna boom is actually part of the feed system for the elements. If you install the choke/balun at the feed point, then tape the coax