My friend John and I were discussing this controversy this afternoon, so when I came home from work, I decided to pull out the QST article and see for myself. On page 49 of the July 2000 issue of QS
I was wondering the same thing. If the tribander was really seeing the saltwater, then its effective height would have been 430' ASL, whereas the curtain array phase center would have been at around
Hi All, I found the following blurb on the Times Microwave Systems website: C. ATTENUATION .......Attenuation is determined by the conductive and dielectric losses of the cable. Larger cables have lo
I think the seemingly oxymoronic term "multi-monoband" was coined to describe the concept used by Force 12 whereby multiple monoband yagi antennas share a common boom. The concept is a little differe
Does anyone know what the relay current is for the Ameritron RCS-4 remote coax switch (e.g. DC current from control box to remote switch)? I was thinking of modifying one for a special application, b
Array Solutions makes just such an animal - teflon coax wrapped around a 2" toroid inside a gray plastic electrical box. I know of two here locally that have provided reliable service at 14 MHz and u
I would still love to get hold of an infrared imaging system to observe a set of cold yagis outfitted with ferrite baluns just before and then during the first hour of a DX contest. It would be inter
Digi-Key sells ceramic composition power resistors that look like they would be a good choice. The 2 watt units carry a voltage rating of 750VAC and are surge rated for 80 joules. They are made by Oh
Has anyone had any luck using carbon resistor potentiomenters as terminations for K9AY loops. I was thinking that a 2 watt carbon potentiometer might be a convenient way to adjust the termination res
Hank, I am curious if you have any insight as to where this old wives tale about aluminum and work hardening originated. I remember hearing this kind of thing repeated 15 years ago when I was going t
What are you doing with the TH-7 feedline when you are running the boom on 40 meters? That might be the culprit. 73 de Mike, W4EF.............. and N4KG. the radio go. 100w became a XYL just 5w at we
Richard, It depends on which specification you use. Correctly applied you should get the same answer either way. I think the newer specs carry the 2/3 drag coefficient for round members in the wind p
Check with the RF Connection http://www.therfc.com/dinconn.htm He has the special Kenwood DIN plugs that are used for the transverter, external receiver antenna, remote VFO, etc. As has been mentione
Hi Stu, I don't have much experience with this, but I wonder if any buyers have had success negotiating specific exemptions (antenna, or otherwise) to CC&Rs prior to closing on a property? Seems to m
It could be a number of things. First off, 8 foot ground rods may give you some lightning protection, but they aren't really much of an RF ground. Aside from the 3 ground rods on the tower, do you ha
Instead of giving Tom the award for "Dumbest Statement of the Year" perhaps we should give Yuri the award for "Cheapest Cheap Shot of the Year" :):) Mike, W4EF............... ________________________
This brings up a good question. I have access to a Rohn 25 tower that is 60 feet tall. The base of the tower is located on top of a building at ~40'. Fifteen feet of the tower is bolted to the side o
I've been trying to model a shunt feed system for 160 meters using my copy of EZNEC 2.0 (DOS version) running on a Windows XP machine. Although EZNEC 2.0 runs really fast on this machine (1.5 GHz Ath
The Loop Mast and Hadware kit that Gary (K9AY) sells includes 24 feet of fiberglass support mast. 73 de Mike, W4EF...................................................... ______________________________