Gordon, I think 65 feet is the best height... it's 1 WL at 20M, 2 wl at 10M, and about 1.5 WL at 15M. You should use the SW in the ARRL Antenna Book to look at other heights... -Rex K1HI Rex L
John, The impedance repeats each 1/2 wavelenght, not 1/4 wavelength. -Rex K1HI Rex Lint Merrimack, NH I want to measure the impedance of an antenna and it is not practical to connect an
This is *NOT* how to install them! http://lh6.ggpht.com/_0SlIJsk5V4M/RhyOrG1lhfI/AAAAAAAAAGc/6r0k1hm7hvo/DSC011 31.JPG -Rex Rex Lint, Consultant 26 Brek Drive Merrimack, NH 03054 PH: 603-860-765
Len, An inverted L is a 1/4 wavelength antenna that, when fed from the end near the ground, can be fed with coax WITHOUT a coil/capacitor combination. The center conductor goes to the antenna wire, t
How does this work for radials? OK? -Rex K1HI Rex Lint Merrimack, NH . . . I use aluminum fence wire - 17 gauge - it is cheap and light and you can tension it with two fingers. It runs
What is the common knowledge about using "dynamic" climing rope for gin poles? Can be done but not a good idea, or "NEVER!" -Rex K1HI Rex Lint Merrimack, NH --Original Message-- From: to
Tony, Thanks a lot for sharing this - I appreciate the thoughtful effort you put into this and your willingness to share with us. Now, I'd like to ask for a copy of the rebuild treatise. I recently g
Dave, Tim's talking about soldering to a coax that's "special". For regular ol' coax, thru-the-holes soldering is still "tried and true." -Rex K1HI Rex Lint Merrimack, NH --Original Mess
Well, I'll be darned! I'll try it. -Rex Rex Lint, Consultant 26 Brek Drive Merrimack, NH 03054 PH: 603-860-7651 Hi Rex! There is nothing "special" about the coax I use for this method! Regul
Rather than a relay, how about 80M traps that connects the feedpoints of the wire to the coax - that would allow 80M energy to bypass the linear load. -Rex Rex Lint, Consultant 26 Brek Drive Merrimac
I don't know how much power you're planning on putting through that cable, but here's a cheap (and not "too-bad") approach to making UHF connectors for hard-line using a hose clamp and a coax barrell
This reminds me of an incident when I worked at Sanders in Nashua NH. An EE thought he'd play a joke on me: "Here, hold the ends of this coax. I've got to measure the resistance... It's a little less
My preference would be for a Flex Head (adjustable angle between torque plane and handle) Ratcheting (not reversable: I'll just turn it over to reverse it) Double Box (I carry fewer tools up the towe
Actually, POUNDS is the force, SLUGS is the mass. In the metric system KILOGRAMS is the mass, NEWTONS is the force. But getting the masses to understand the difference between mass and weight (one of
Terry, You can use a pully system to get more travel out of the 4 foot "throw" of the actuator. Secure one end of a cable on the pipe, put a pulley on the actuator, run the cable over the pulley, and
Normal practice is: Put 3 sections together on the ground, put guys on those sections, hoist to vertical and install the guys and snug them up. Climb this short tower with a gin pole, pull up and ins
I heard via my daughter at Keene State in ENH that a Vermonter was injured when his harness broke while he was on the tower. Does anyone have info on this accident? I'm not sure it was a ham. -Rex K1
A better knot than half-hitches for such a task is the PRUSSIC. With either the prussic or half hitches, rather than the "finger trap" approach, you have a part of the cable in front of the knot, bei
frequency). Why was your target freq = 6190? -Rex K1HI Rex Lint Merrimack, NH --Original Message-- From: towertalk-bounces@contesting.com [mailto:towertalk-bounces@contesting.com] On B
Nor barking squirrels... -Rex Rex Lint, Consultant 26 Brek Drive Merrimack, NH 03054 PH: 603-860-7651 The only one I know about is the group exchanging Field Day chili recipes. Erich N6FD ;