For Sale 40 meter KLM 4 el Beam ....$200...Pickup only Bob ..W5AH, Irving, Tx -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests:
-- Steve, It goes without saying that transmitted voltage/power arriving back at the tuner due to a mismatch at the antenna gets absorbed by the tuner...except for the small portion that gets re-refl
-- Chuck, I find this statement rather interesting. The last time I checked, two signals of equal magnitude and opposite phase cancel. If you add 0 to the source wave the "reflection gain" must be 0
Rick, with the guy points on the property line, the base of the tower will be 28 feet from the line. The 3rd guy point is 84 feet from the property line. The guy points on the property line are 97 fe
If you want the official info, its FCC Bulletin 65 (edition 97-1). Amateur radio is specifically discussed in Supplement B. Both can be downloaded from the FCC website or the government printing offi
Hi Paul, I would say your problem is on 40 not 80. To me, covering almost the entire 40 meter band at the 2:1 points says you have considerable losses involved. This may sound backwards but it's not.
Buck, You have made no mention of the ground connection to the tuner. Have you checked it? 73, Bob, W5AH _______________________________________________ See: http://www.mscomputer.com for "Self Suppo
Steve, I presume you are using the internal SWR meter in the FT1000. Put an external SWR meter between the rig and amp and see if both read the same high VSWR. The problem may be internal to the FT10
Bob, At 100-200 ft from the station plus the height of the tower, I think you need to find a way to make Hardline an option... Especially with VHF operation. A data chart can be found at http://hamun
Add a Balun to the feedpoint and see what happens Bob, W5AH _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting
Jim, All it will do is change the impedance at the shack end of the line. Hopefully, your tuner will still be able to match it. 73, Bob Hope this is not off topic If I add 50' to the existing feed la
RG316 is a .1" diameter cable with an unlikely 1250 Watt average power rating at 10 MHz. Has anyone used short lengths of this cable to make choke baluns for low band use? My searches have yielded no
Tony, I cant think of a simple way... I modeled it on Eznec and came up with a feedpoint Z of 22.37 -j442. From some software of my own, that Z with 50 watts applied will have a voltage = 661.65, cur
Howdy, Go to your local boating store and buy a fiberglass repair kit. Its messy but effective...just brush it on. It worked well on a TB6 I owned years ago. Antenna finally died of metal fatigue but
Another method that seems to work well, at least in the north Texas climate, is to snug the PL259s with pliers and then apply a couple of liberal coats of Liquid Tape (available at Lowes and other ch
If there is an answer as to why this happens, I would like to know too. I had exactly the same thing happen. Bob, W5AH --Original Message-- From: towertalk-bounces@contesting.com [mailto:towertalk-bo
Howdy, I am fortunate to live in a city with what I consider the best of all possible views about amateur radio towers. I suffered some storm damage to my tower this spring and was concerned I would
Howdy, I finally got my TH7 off the tower for repairs following storm damage last spring. The obvious damage has been taken care of and now I'm looking at the insulators. The antenna has been up for
I recently asked the same question of Butternut in an e-mail. The VX was made with shorter tubing lengths so it could be shipped via UPS without oversize charges. After UPS changed their size rules t
Neither the cal switch nor the brake delay circuit is shown on any documentation I can find. Bob, W5AH _______________________________________________ _______________________________________________