As a side subject to the topic: "Really dumb question on coax" and then a second subject topic of: "There are no dumb questions on Tower Talk, only dumb answers!" I will submit the third subject as a
Hello to all, Dose anyone have any comments on or experience with Cubex Quad's. To be more specific there model Mantis II 40M +4L3B. This is there unit which is 2 elements on 40 meters and 4 elements
Hello to all. Before placing the order for monband 10 and 15 meter antennas I'll post this question. I have a Force 12 C3SS and I would like to feed it with a coax line for each band. The feeding is
Hello to all, I have a Force 12 C3SS mounted in the center of the yard at 30 feet. It has performed very well for me. I would like to put another antenna in the backyard for 10,15 & 20 meters for a s
Hello to all, As the conclusion to my quest to run a multi radio operation from my QTH. The minimum distance for another antenna tri-band antenna (10-15-20 meters) is 16 feet. Any closer the interact
Legion or fact? When feeding a tri-band beam I have been told that a length of 125 feet or multiples of is the best length for your coax to be. This is based on RG213 with a velocity factor of 66. An
Pete, This is a good question with a very simple answer. We are dealing with what is known as an alternating current. The amount of each complete cycle per second determines what our frequency is. A
Hello, With all this talk about vertical antennas let me ask this question. I have been told that a crankup tower will not load well as a vertical do to the sections not being fastened together. My t
David, Seeing your message title invoked the hope that a new but very much needed direction was about to be taken within the towertalk reflector. After reading some of the replies and learning about
Hello to all, I am happy to see the amount of replies to the "What about hams with small lots?" question. To continue let me add some notes on my personal experiences. As stated before the antenna ar
Capacitor resistive values. Hello to all, This question has been around unanswered for the longest time. What resistive value would an air-variable or vacuum variable capacitor have? If the mechanica
Brian, I have used stepper motors to tune small magnetic loop xmitting antennas. Using an air valuable Cap adjustments become very critical requiring stepper motor precision. The motors are easy to g
David, Sorry I can not find a computer program you are requesting. From my note taken from ON4UN's books, Low Band DXing, I have some values that might be a good starting point to work from. Quote. H
Impedance matching losses. The efficiency of the antenna is not being questioned. Only the loss of power when coupling to it. When attaching the transmission cable to the antenna we try to have equal
Jim, Why not use the Force 12 C3SS. 12 foot boom, 2 elements each band and it fits in a 4 foot box. Should take about an hour to put together and it works great. Rich/AA2MF -- FAQ on WWW: http://www.
Hello To All I hope my first reply to the request for a simple beam design has not started any conflects among the Tower Talk members. My reply was to simply comment on not reinventing the wheel. Rat
Gene, I've had mine up for a few years now and it's been doing a great job for me. Rich AA2MF -- Original Message -- From: "Gene Bigham" <jbigham2@kc.rr.com> To: <TowerTalk@contesting.com> Sent: Sund
Dick, I personally like OPTION 1. If you can insulate the base of the antenna from ground for the power you plan to use. The end of the antenna will be at a high voltage point as the half wave for fo
Hello to all. I have been told not to use an air dielectric coax such as Belden 9913 for delay lines. It seems the velocity factor changes as the cable is tie-wrapped or coiled which would effect its
Hello to all. Tower information: Not using the cement base re-bare cage as part of the tower ground system. A Florida beach sand wet hole installation. How close to the tower should the FIRST ground