I am going to rework my inverted vee supported near the top of the 50' tower with polyethylene insulated ladder line (300 or 450 ohm, from DX Engineering, or similar). How far off the tower leg or fa
One possibility to explain the readings on the MFJ instrument when it is looking into the antenna vs. when it is looking into the tuner input . . . Usually the Q of a tuner that is tuned to a specifi
I suppose the moral of the story is that all test and measurement equipment, electronic or other, has limitations, and interpretation of results is not always straightforward, as Jim has highlighted.
Roger--No wonder you're not much good at that stuff anymore--I checked out your website yesterday and saw the log of your big project some years ago--most of us geezers wouldn't have much left either
Is it possible that an above-grade structure could support your tower? Consider gathering up your tower specifications, antenna load data, any available engineering data from the tower manufacturer,
A very interesting thread with much input from knowledgeable folks. I believe much of the commentary in the ARRL Antenna Book comes from research done by Jerry Sevick, W2FMI in the late 60s and early
Steve, My G-1000DXA manual says 84 mm bolt spacing, bolt pattern diameter 119mm, and hole size 9 mm. The manual is available online. 73, Sam AE5L _______________________________________________ _____
A lot of good thoughts in this thread. As a summary and adding a couple of thoughts: 1. Always terminate conduits in weatherproof boxes at both ends to reduce rain infiltration. 2. Always leave a mes
I am putting up a new TA-33 on the tower. How far above the tower (Rohn with 25AG4 flat top plate) should I put the beam mast? 73, Sam AE5L _______________________________________________ ___________
I am putting up a new TA-33 on the tower. How far above the tower (Rohn with 25AG4 flat top plate) should I put the beam mast? I MEANT TO SAY THE BEAM BOOM 73, Sam AE5L ______________________________
Jim, Tnx. Makes a lot of sense. Several pfs on each side of the choke at 30 mhz is a negligible amount. 73, Sam AE5L _______________________________________________ __________________________________
There is a link to the article on this page: ftp://ftp.iasi.roedu.net/mirrors/ftp.funet.fi/pub/ham/arrl/qex/Backup%20of%20index.wbk 73, Sam AE5L -- _______________________________________________ ___
This morning I removed all antenna system components from my tower in preparation for a replacement project. I thought I would share what I found in case anyone might find it useful. All of this was
The gentleman who began this thread was concerned with eliminating the OUCH! he got when disconnecting the transmission lines when storms were approaching. Another question might be "do I really want
I have seen a number of unguyed towers come down over the years, both bracketed and non-bracketed (generally from near tornadic winds). Of those, in only one case did the bracket hold - in all others
Yes, magic stuff. It is soap based. The brand Ideal is most popular with electricians. The downside is that after several years, it becomes gooey and makes removing the conductors more difficult. ___
On the air today with new antennas Don? 73, Sam AE5L -- Original Message -- From: <n8de@thepoint.net> To: "Cal Zethmayr" <w4gmh@cox.net> Cc: <towertalk@contesting.com>; <towertalk-request@contesting.