Wonder of wonders -- The Supervisor of Power Distribution in Idaho Falls (nearest town to my Idaho QTH) called to ask if I thought they should buy a Radar Engineers Model 240 RFI/TVI location system.
Absolutely; he should buy it! And he should go to RFI Service's training seminar, too. For some customer feedback on both, contact Mike Gruber at ARRL HQ. Please QSP this to Tower Talk as I am not on
Tim: I suspect that the beads you used are the 1" long ones that have a large enough diameter to fit over RG-8. As you point out the ferrite in the bead is important. I used to make choke baluns usin
Chuck: Thank you for taking the time to walk me (us) through the process you used to test the chokes and baluns you put together for your 'one and the same' antenna. I found it very interesting indee
Pete: A long time ago Dow-Key (at the original location in Thief River Falls, MN) made a switch that would do just that. I have one (and if I ever see another one I will immediately buy it). The swit
I think this topic is sort of under the 'towertalk topic umbrella'. This is a very interesting article on propagation. Adcock's article on "Propagation of Long Radio Waves" at http://www.lwca.org/lib
Interesting variety in the set of comments. Brings to mind an interesting quote, "You are entitled to your own opinion, but you are not entitled to your own set of facts" Tod, KOTO N3DRK replied to K
Consider also placing a second eye bolt 12 inches below the first and running a cable between the two eyes. This will provide a counter balancing force for the upper bolt and reduce the tendency for
Just relax and feed the power to the system. Use a tuner to adjust the impedance at the station for the 40-2CD when you use SSB. If the 2.5:1 bothers you at (21.000 you said, but I suspect you meant
The resistive part of the impedance of the dipole is a function of its height above ground. The ARRL Antenna Book and Handbook cover this. The center of your antenna is significantly lower than 1/2 w
Tom: Any thoughts about what things cause the differences you observe? to do with how suitable it is for RF >applications. Tom, how does one read the catalog specifications and somehow decided "that
This procedure is used by more than one 'institution'. It tends to assure that the problem is both real and significant. (I am not supporting this only commenting on it). If you are making a BPL com
The following is intended to be 'tongue in cheek' in case someone thinks I am serious. I guess as long as you don't sniff (definitely don't "inhale") the inside of the tubes after installing the bea
Ed: There were some articles in Ham Radio and perhaps elsewhere some years ago that discussed adding bands to the HyGain HyTower. If you don't find anything you might send an email to K0LR (lyle@mlec
A very quick calculation which takes the weight of the Force 12 antenna at the end of a 72 foot arm should indicate that there is a very large bending moment when the top is near the ground. The for
It is my opinion (and only that) that the wall thickness of the tubes used by Heights in 1972 (when the tower was fabricated) was insufficient for the stress I placed on the tower sections. I believ
I suggest we don't have time to spend on divisive conversation. After the BPL issue has been resolved satisfactorily for amateurs why don't we pick up the political conversation -- in the interim per
One of the interesting parts was a discussion of a housewife in Tokyo getting her soap operas via broadband instead of cable or 'off the air'. It seems that substantial parts of some countries have 1
Geez: It's only a hobby -- For most of us daytime climbing when the wind is "reasonable" is where the envelope is. I did appreciate the information about lighting choices because I find I sometimes h