<< In a message dated 2/24/01 4:24:20 PM Pacific Standard Time, w9ol@billnjudy.com writes: < 'm seriously antenna theory challenged. Can you stack different type of beams. Say a log periodic on top a
In a message dated 1/5/01 9:22:28 PM Pacific Standard Time, ron.stordahl@digikey.com writes: << I would like to put up a full size 80 meters vertical without guys. I will have space for a buried radi
<< A truly self supporting 80M vertical is a challenge. A set of LIGHT guys, close in, greatly simplifies the design. For relatively short masts with very small loads, there is no reason the guys can
mixer receivers, I mentioned a passive preselector circuit that was in CQ. In QST's Compendium 6, there is an article about this very problem. On p170 lower right, there is a similar circuit. It use
in baluns" by nature of the matching system design with no loss for coax. HyGain went out of their way to defeat this concept with the Hair Pin Match they used. Hair-Pin matches were described in WW
In my #21TT, there was some wrong words used I missed at 3 AM in the morning when I wrote it. I added another example to #22TT also. Delete my number 21TT from your files. legitimate concern. There a
Use the Omega Match which is a gamma with another variable capacitor directly across the coax to ground. With this match the length of the gamma is not critical. Make a weather tight box for variable
I don't think that anything you do to the antenna will affect your transmitted audio. The comment about RFI seems most likely. Get a local to listen to your signal on different bands and start isolat
There has been much talk of pinholes in the galvanizing on towers or cracks from bending. Suggestions were made to examine every weld joint even with a magnifying glass before buying. Even after that
In a message dated 07.12.99 14:04:49 Pacific Standard Time, philk5pc@tyler.net writes: Hi Bob, ON4UN's new book from ARRL, "Low Band DXing" covers this topic very thoroughly, plus many other low band
The reason WD-40 penetrates is that is has DMSO in it I'm told. It may also be a fish oil that many use on their hands and elbow for arthritis. I find it hard to believe it's a petroleum oil product
In a message dated 08.12.99 15:05:33 Pacific Standard Time, n7cl@mmsi.com writes: Silicone grease will keep moisture and air off a surface longer than another other grease--therefore no corrosion eve
In a message dated 11.12.99 07:18:50 Pacific Standard Time, w9ol@dataflo.net writes: My exciter is picky about the length of coax between it and my amp. I had to add coax to allow the exciter to matc
In a message dated 26.12.99 10:51:47 Pacific Standard Time, py1yb@urbi.com.br writes: << A friend of mine installed a C3 - F12 and was very satisfied with the VSWR curve. At the center of each band h
< In fact, I am slowly working on modifying a battered matchbox here to remove the 50/300 tap business and replace it with a switched tap and series variable input side--the only improvement I could
When a tower is loaded as a vertical, by pass with a .1 ufd each rotator lead and ground the coax shield to the grounded tower where it leaves it. Just running them inside the tower often is not enou
<< To: w0hh@grapevine.net Your 160 m antenna load is creating high voltages in the tuner that is causing the arcing. Change the length of the antenna both ways (at the end or in the shack) in steps e
If you have coax cables running under the house with so much RF Spill Over on the shield that is causes RFI, you have feed systems that needs to be improved. A coax shield can pick up induced RF if i
<< In regard to running open wire line into a basement: I ran open wire into the basement by drilling 1/4" holes in the house wall of wood and ran insulated open wire line through the holes into a ba
<< Dave You are right. Open wire line with ice or snow on it against a blue sky is absolutely beautiful. The 4 to 1 balun at the end of the open wire line and then coax into the shack seldom works we