"Windom" Antennas. http://www.packetradio.com/windom.htm http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=12135 A little history: http://hamwaves.com/cl-ocfd/history.html#early The 1956 ARRL Radio Amat
Dan, I pass. I have never owned an AV-640, so I cannot offer a qualified opinion. I only pointed out that an antenna that is off center fed is commonly referred to as a "Windom". We normally think i
Guy, I built my own house in 1997. When we installed the foundation plumbing, I installed three 2 in. pvc pipes through the foundation. I brought the pigtails out about 18in from the slab edge and ab
Marc, D1 is a 13v zener diode. Mine has a 12v in it and has plenty of adjustment. D2 is a plain rectifier diode, 1N4000 variety will work fine. I have a HAM II user manual. If you need a copy, I can
Don't sound so bad, if you call it "Senior Moments". 73's Jim W5IFP _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@c
Pete, I have about 150 ft going to my TH-6. I purchased it in the early 1970's and have used the same cable at three QTH. When I installed the tower at this QTH, (14 years ago) I cut about 3 inches o
Dan, You can purchase self etching primer at most any auto parts store. I get mine from NAPA. It runs around $6 for the large spray can. It is good for steel, aluminum and fiberglass. You can paint i
Kip, You can't just pick a speed and have it fit all antennas. You have to consider the antenna and its weight/size/mechanical construction. If you run it too fast there will be a strain on the anten
Hi Peter, Looking at your pictures, it seems that you should be able to add a sprocket to the chain drive in your limit switch area. I had to do a similar thing to mine a few years back. My original
Roger, Normally I would agree with your suggestion. However, the RotorEZ circuitry is designed to operate using the conventional feedback pot with the wiper grounded and each end of the pot is a feed
Keith, I would ground the spare ports. I have a remote switch in a box at the base of my tower. I have one spare port and I installed a dummy load on the spare port. It really comes in handy for test
Mike, I have a 214B and can scan the manual if you could use it. I have never seen a 215B, but perhaps it is similar to the 214B. 73's Jim W5IFP _______________________________________________ ______
Dave, There are several antennas that work well in limited space. A mobile Screwdriver for one. I would suggest you look at the DDRR antenna. It can be erected in a very small space. you can use wire
Tom, I agree with you. I have had my 214B for about 30 years. However, I took another approach. I installed a modified TV rotor in the center of the BOOM. I modified the rotor head and installed Limi
John, Logger32 has antenna switch control based on radio frequency. It also has rotor control. Works great 73's Jim W5IFP _______________________________________________ _____________________________
Steve, I would suggest you spray WD-40 into it. It should not damage the motor and will kill the ants. I would not use any insecticide, because it is corrosive. Once the ants/spiders are dead, you sh
http://www.swgalvanizing.com/san_antonio.htm 73's Jim W5IFP _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting
Barry, They seem to be the same. Attached is a schematic of both styles. 73's Jim W5IFP _______________________________________________ _______________________________________________ TowerTalk maili
Jim, I would suggest you place the rotor power supply at the base of the tower in a WX proof box. I have my 24v power supply mounted at the tower base and operate it with two 12vdc DPDT relays. Each
Bob, The secret is a good primer. I use a self-etching automotive primer formulated for Aluminum and fiberglass. You can cover it with Enamel, Lacquer or Latex based paints. Its available at automoti