Hello Topbanders: I'm new to the list and am interested in improving my antenna situation here. I've merely dinked around with this band until I decided to get into the CQ 160 contest last year - and
Author: "James C. Hall, M.D." <heartdoc@nwtcc.com>
Date: Fri, 13 Feb 2004 14:30:30 -0600
Thanks to all who replied to my query. I DO have ON4UN's book 'Low-band DXing' and will definitely dive into it deeply. I got several sources on the web as well and a lot of great advice - all printe
Hello: This year, only my 3rd year on topband, I decided to splurge and set up a 4 beverage antenna using 2 reversible (2 wire) antenna that are nearly orthogonal to each other. The first is oriented
Tom you made mention of "second only to the Drake" in an earlier post regarding receiver performance. I would be interested in hearing about the Drake being used and how it's configured. I have a ver
works I have 6 "center-fed" 2-wire, 2-port Beverages which have reflection transformers (or the equivalent) at both ends. They work very well in terms of directivity and deliver plenty of signal. I w
Hello All: This was an interesting thread and I decided to do a little test. It was mentioned that on some reversible beverage installations that on the reverse direction there was a noticeable decre
The first question that comes to mind is whether the difference in signal strength is due to a fault on the Beverage, or a due to a difference in the signals from the two directions... The comment th
This has been a very interesting thread and one that I took notes on. I will have a new system going up that will be 120 feet of Rohn 45 tower with large yagis at 60 and 120 feet - 48 ft. booms. I do
Hello All: New tower setup: 120 feet Rohn 45 with two large yagi's at the 120 and 60 foot level, both with 44 foot booms. The shunt feed is attached at the 55 foot level and the drop wire is about 4
Hello All: I?m continuing my attempts to load my shunt fed tower which is electrically longer than ¼ wavelength. At the tower, I managed to get the SWR down with a 500pf 10kV vacuum variable as the s
Thanks to all for the great replies. I particularly like the link on the doorknob capacitors. Interestingly, I had a carbon track on the lid of the Hoffman box. The box is grounded to the tower and t
Hello TB: I have a problem -I cannot seem to get a decent match either with Gamma or Omega matching. My situation is a complex one that doesn't lend well to modeling and I am forced to trying trial a
Hello TB: Thanks so much for the great replies !! Bottom line is I need to insulate the tower from the guys. Several mentioned using a grid dipper to discover the actual resonant frequency of the tow
Yes, this is the way to do it. OD5NH was getting this bad rap too. You don't need to send a SAE to OD5NH either as he returns it via postcard - avoids suspicion by the police. Registered mail is quit
" And you don't need a hail-mary super choke for the job. " Hi Guy: I'm going to try elevated radials on my shunt-fed tower. I was thinking about constructing an "Ugly Balun" for the job with 4" PVC
Hi Wayne: Instead of self-supporting elements for my 4-square, I used rope-supported wire elements hung from the top of my 120 foot tower. I used 4x4 posts in concrete to support the base of each ver
I have an omega matched 120 foot tower and I apparently have a bad vacuum variable capacitor. Upon applying more than about 300 watts, the SWR goes off scale. Tuning it out and trying again, yields t
Thanks Steve: Not bad - I may try that ! :) The question in my mind was if there was an arc outside the caps, why would the SWR change ? Anyway, I may be missing something. I haven't been inside the
Jon: Thanks for this. This has crossed my mind since I use hose clamps to attach the wire from the top and bottom of the caps. I had used copper flashing between the two caps. I'll change that to a h
Just an update on this - last night FT5ZM was spotted briefly on 160M and I went down to listen for awhile. I didn't hear much and what I did hear I couldn't make myself believe it was them ! So I th