On Sun, 6 Dec 1998 18:48:26 -0800 (PST) Pat Barthelow <aa6eg@hh.tmx.com> writes: That's a good point. If the INSIDE diameter of the tubing is different from KLM original, it would throw off the capac
Let's see... You could take an slr camera, telephoto lens, and a tripod down onto the low ground and take sightings up the hill. Read the slant range to the focus point off the lens markings, and rea
On Mon, 2 Nov 1998 01:36:44 -0500 "Dick Green" <dick.green@valley.net> writes: The freeware program YTAD, available through the arrl.org web site, uses a four element yagi as its default antenna (act
On Fri, 06 Nov 1998 05:14:04 -0800 "Robert L. Shohet" <kq2m@mags.net> writes: Someone suggested pieces of concrete block. That sounds like a good idea. There are all sizes and shapes of concrete stuf
I just saw another Drawing in the Rohn Catalog, B841300, which specifies "Minimum concrete cover for reinforcement shall be 3 inches, unless otherwise noted." It also states "Concrete cover from the
Speaking of recurring threads, let me dust off this oldie but goodie. A good thing to do every year or so is to measure your feedline losses. If you have an antenna analyzer that reads high values of
This is a repost with a more relevant subject line. Recent discussions of feedline losses on a kt34 and recurring threads reminded me of this oldie, which I first posted about four years ago. A good
On Mon, 16 Nov 1998 12:49:43 +0000 Pete Smith <n4zr@contesting.com> writes: Here's a little trick I have used in the past. When making f/b or other comparison measurements, use the built-in attenuato
Well, the top of the tower will be 34 feet above the top house bracket. If you look at the 100' bracketed tower in the Rohn book, it coincidentally is also 34 feet above the recommended top house bra
On Mon, 16 Nov 1998 19:56:10 -0800 Jonathan Kaplan <jonk@jskent.com> writes: I think you mean zinc oxide. That's normal. I don't think you need to paint it. Not right away anyhow. Replace the cable.
On Sun, 04 Oct 1998 04:31:39 GMT "Rick Bullon" <kc5ajx@hotmail.com> writes: The distance from the property line is 1/2 of the guying baseline, or 40 feet in this case. For every foot of guy elevation
Try this: While observing the swr on 21.005, try shorting and unshorting the 40 meter feedline in the shack. It is possible that the length of the 40 meter feedline is tuning the xm240 driven element
On Sat, 17 Oct 1998 22:48:20 -0700 Sam Ferris <ve5sf@sk.sympatico.ca> writes: I have a 40-2cd mounted six feet above a KT-34XA, booms parallel. The 40 is set for a compromise between cw and mid-band
Whoops, the formula should be: SWR = (1+SQRT(REFLECTED/FORWARD))/(1-SQRT(REFLECTED/FORWARD)) The third column was obtained Ok, the first two columns were calculated incorrectly, but the Mirage column
That's the best indicator of which elements, if any, need rebuild. If that measurement is less than 0.5 ohms after subtracting ohmmeter lead resistance, you should be good to go. Dave Hachadorian, K6
The side force actually depends on how the antennas are distributed on the mast, and how far down in the tower the rotator is installed. To determine the rotor side force(lbs) for each antenna, calcu
On Sun, 20 Sep 1998 06:05:58 GMT "Rick Bullon" <kc5ajx@hotmail.com> writes: I'm on vacation, and I don't have the Rohn book with me, but there is a drawing in there somewhere that shows how much real
Chad, I have a kt34xa that was assembled according to the factory dimensions. The swr is so flat across the band that I wouldn't consider tinkering with the element lengths. The gain seems to be very
On Tue, 11 Aug 1998 11:41:46 -0400 "J.P. Kleinhaus" <w2xx@cloud9.net> writes: An older version of this program, called YTAD, is available from the arrl.org Web Site. It's great fun, and very instruct
On Wed, 12 Aug 1998 00:57:48 -0400 Jim Worthington <jimw@tstnet.com> writes: I have a KT-34XA at 49 feet that works well for me. I have a friend with a KT-34 at 50 feet two miles away, and when we ge