Let's think about this for a minute. Let's assume you are transmitting on 20 meters into a 20 meter monobander. A small amount of harmonic RF is also being transmitted on 28 Mhz into the 20 meter mon
On Sun, 6 Jul 2003 12:27:59 -0700 "Don Bergmark" <dbergmark@peoplepc.com> writes: I'm sure that Karl Tashjian will help you. www.karltashjian.com Dave Hachadorian Big Bear Lake, CA
Yes. You could have Norm's or Rotordoc overhaul the Ham IV's for you. However, I wouldn't recommend the Ham IV for an antenna with a 32' boom, particularly if the Ham IV has been disassembled for ove
I have always recommended testing a KT-34 or XA by doing a DC resistance check between the 10 and 15 meter outer capacitor tubes. This one measurement tests every joint in the element half. A good KL
Try this gambit: Amateur Radio is an experimental venture, and the antennas are always changing. Sunspot cycles come and go, and frequencies change constantly, so each antenna installation is essenti
I thought there was an intermediate generation of Philly that used cable clamps. I remember seeing it at Dayton, where they had a table-top miniature guyed tower with cable clamps on the Philly and o
Many zoning ordinances contain something like the following, from the City of Yuma, Arizona. "Exceptions to Height Limits: The provisions of this section shall not apply to church spires, domes, belf
I use 13.8 vdc regulated on mine, and have never had a problem. I'd worry about stretching the springs. The normally-closed contacts of those relays carry signals too, and they could become intermitt
On Sun, 23 Mar 2003 09:15:24 -0800 "Jim Lux" <jimlux@earthlink.net> writes: Thanks a lot for that tip. The spreadsheet is very easy to use, and imported fine into Quattro Pro. It includes mast bendin
I once motorized an LM-470, which has a 40:1 winch. I used a 3/4 hp, capacitor start, 1800 rpm motor, obtained from Sears. I used a belt and pulley, with the smallest pulley I could find used on the
Quite a bit. Maybe 2 feet, but the last time I pulled off an end cap, a huge amount of water ran out! This is in the middle of the desert, when it hadn't rained for months. I put the cap back on, but
On Mon, 03 Feb 2003 11:24:43 -0500 John Silberman <blkcat28@atlantic.net> writes: A faulty lightning arrestor, which is a high probability of being the problem in this case, does not change its noise
On Thu, 20 Feb 2003 05:49:27 -0800 (PST) dan bookwalter <n8dcj@yahoo.com> writes: I have an old letter from U.S. Towers, advising me that it will fit, but that the tower cannot be cranked down all th
The program "YT," which comes with the ARRL antenna book, has this capability, over any kind of terrain. An older version, YTAD, is available for free on the ARRL web site. Dave Hachadorian, K6LL Yum
On Thu, 30 Jan 2003 17:59:28 -0600 "N9EN@VOYAGER.NET" <n9en@voyager.net> writes: This could be an important clue. Whenever I've encountered this type of 24/7 interference, it has turned out to be a d
On Wed, 01 Jan 2003 01:19:03 -0500 GEORGE PRITCHARD <ab2kc@optonline.net> writes: The four self-tapping screws that hold the two halves of the Ham-M together may be coming loose. This allows the lowe
On Wed, 01 Jan 2003 01:19:03 -0500 GEORGE PRITCHARD <ab2kc@optonline.net> writes: The four self-tapping screws that hold the two halves of the Ham-M together may be coming loose. This allows the lowe
On Mon, 25 Nov 2002 13:32:58 -0500 Pete Smith <n4zr@contesting.com> writes: It just takes one DPDT switch or relay. I'll try a word picture: One moveable contact goes to rig a. The other moveable con