Cell towers are relatively low power. At 1/2 mile the received power is insignificant, likely no more than a few microwatts. Tell your wife she will get more radiation from her cell phone. 73, Keith
I second that opinion. coax. Not in my experience. If you run high power on 80 it will blow the top cap. 73, Keith NM5G --Original Message-- From: towertalk-bounces@contesting.com [mailto:towertalk-
I would like some input on the design of my new antenna farm. Currently, there is one 150 foot Rohn 45 about 30 feet north of the shack. Call it tower A. It will eventually have four antennas stacked
Jamie, I think I have one of these. I got it from The Mast Company. Mine is the ruggedized version that comes in a large PVC case. It was obtained to take on the Falklands (VP8WWW) trip last year (no
If the amp is a true linear and is not overdriven, can the filter be inserted between the exciter and amp to solve harmonic problems? 73, Keith NM5G I have a Drake TV-3300-LP that went south while op
If you look at just FAA/FCC requirements, lights are required at 200 feet and above. Also, any tower at 200 and above must be registered with FCC. 73, Keith NM5G Hello, I have a question concerning t
Open frame. I have that relay box on my C-4XL. See photo at http://www.dutson.net/transfer/HamRadio/C-4XL/relay4.JPG 73, Keith NM5G What type of relay is it Dave? Vacuum, small reed, large open frame
Does anyone know the weight of a Rohn 55G section? Reason I ask is my tower is going to be re-galvanized and they charge by 100-weight. 73, Keith NM5G _______________________________________________
Thanks to all who responded. The answer from the Rohn book is 95 lbs. 73, Keith NM5G _____ Does anyone know the weight of a Rohn 55G section? Reason I ask is my tower is going to be re-galvanized and
You assumed correctly, Tom. Default is open (CW tuning). I lost your previous post. What material would you use as a gap? Could this gap be inside the box parallel with contacts, or is it best to run
I hear after a claim like this you may end up paying more in the long run than your loss. That's because insurance companies usually charge more in the future for clients with a record of small claim
I recommend 55G. Yes, it is a bit more expensive but justified it when you consider the twisting torque involved with rotating/stopping the MonstIR. 73, Keith NM5G I am on track to take delivery of a
You can learn a whole lot about dipoles reading the ARRL Antenna Book. Yes, thicker wire will give better wider coverage, but the 3 to 1 VSWR bandwidth will never cover the whole band. What I would d
discharging, but the tower next to the antenna, and the antenna is just picking up the noise. Jim, have you ever observed precip static on an antenna supported by a balloon? 73, Keith NM5G --Original
We have our share of lightning and 'canes here too (Houston area). My tower is only 150 and will soon be adding two more at 150 and 160. I have found the most effective protection is a well-designed
Not certain what this is. Are you referring to the Rohn 25G top section: http://www.texastowers.com/25gtops.htm 73, Keith NM5G Hello, I would like to see a picture of the AG25G parts. Thank you Wayne
A-men. Between our dozen or so barn cats and the neighbor's dogs that roam across our 16 acres, critter infestation is nil. Oh, and we have a semi-resident owl that makes an appearance from time to t
I am planning to put up a 2el 80 meter Yagi. The maximum tower height at my QTH is 190 feet due to location near an airport and other restrictions. However, I would rather use a 120 footer for this a
I like to use tarred nylon trot line. It is rated at 440 lbs and is resistant to UV. Academy has it in 351 foot rolls for a few bucks. See in photo on my web site. http://www.dutson.net/Transfer/HamR
I think that is correct. Be sure to use the same kind of coax for both pigtails as differences in velocity factor will affect phase angle. 73, Keith NM5G Group, I have 2 - F12 606 I stacked and phase