Eric: I just wanted to add a little emphasis to what you said about the sound of the stack. When I first put my system on the air I was astounded by the number of people that asked if I was using a d
Barry, When I used to run a 4 element lazy vee antenna (similar to your sloper array) I put two insulators at the proper position at the bottom end of each dipole element. I was able to tune the arra
Interesting Bill, I am out in the middle of a valley at 5050 ft. elevation. It does drop off about 400 feet toward Europe in about a 2 to 3 mile distance and it is flat for about 3 miles toward Long
Bill, That makes sense to me! 73/Mike, N7ML -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com
This is very interesting Guy! I have wondered about the receive mode the way you have and concluded something similar only I looked at it from a different view in that I thought about the fact that s
Bruce, I like your method better than mine, especially the corrosion part, good idea! 73/Mike, N7ML -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Ad
Jim, It might be a good idea, just to be safe, to throw the material into a microwave oven with a cup of water for a minute and see if it warms up or not. If it does, it may not be very good for RF.
Eric, I heard this from another Amateur many years back. He said it was to provide a load for the Magnetron so that you don't blow it. I don't know if he is right or not, but I always did it any way.
Kurt, Being an obsolete EE and therefore coming at this from a point of ignorance, can we not look at Phillystran in series with EHS like two fuses in series. The lighter fuse always blows first and
Pat: What are you using for your SWR measurements? If you are using an SWR analyzer, maybe you are picking up interference from a broadcast station??? 73/Mike, N7ML -- FAQ on WWW: http://www.contesti
Hello Tom: When I put up my two 190 foot rotating towers, I owned a backhoe at the time, but I knew that my next door neighbor who was in the business was a much better operator than I. I hired him t
Tom: Find a friend with a new CIA-HF antenna analyzer by AEA. With it you can determine the velocity factor and characteristic impedance. 73/Mike, N7ML Hello again, I have some Alpha Wire Company coa
Just a note that I have learned over the years that if you are going to coat something for uV protection, it is best to use black or some other very dark color. It is the opposite of what I first tho
Hello Pete: That is very interesting, indeed. I have always been a big believer in the bead current baluns for the past several years and have been making my own out of surplus beads I have on hand.
Barry, I tend to agree with you to a point. With my six stacked tribanders, I have divided the array into three pairs, a lower, middle and upper pair. The first three years I could switch any combina
Hello Tom, Congratulations on receiving one of the first CIA-HF's. Return Loss is used by the commercial communications people instead of SWR because it is easier to resolve the antenna match when it
Hello Saad: I have had an AEA IsoPole antenna on top of my 20 foot mast coming out the top of an 89 foot crank up tower for over 5 years in this (fairly high lightning) location. Before that it was o
John and others: Just another fly in the ointment. Don't forget the attenuation that a forest of trees brings, especially on VHF and UHF! I remember driving along a high mountain road in Sequoia (sp?
Hello Eric: I think that what you have noted is accurate in the statement of the symptom, but not necessarily the cause. It turns out that there was a production flaw in the early IsoLoop antennas th