Just a note, if someone is interested in a Commander HF2500 or HF1250. Both are in good shape full output, no qsk. 2500 for 1900US and 1250 for 1200US. Toronto Canada area. 73 Steve VE3TU
This is directed to single op multiband contesters. I plan on building a micro processor control for antenna selection and rotator control. The number of band antennas, stacking combos and rotators a
Hi George, what you did wrong is calculate the total area of the antenna. The wind pressure is maximum when it is perpendicular to a surface and minimum when the wind is in line with a surface or wir
I am looking for the dimensions for a 4 element 40 M OWA style antenna. If any one can help would be much appreciated. Please email direct. PS using EZNEC tu VE3TU Steve
I had the same problem, I used a piece of brass tubing from a hobby shop soldered to the wiper to repair it. I also decreased the tension on the spring pulling on the wiper and put some lubricant on
I am putting up a tower this summer and would like to know if anyone has some 3/8 fiberglass guy rod they are willing to sell. I am looking for several short 40 ft pieces or 200 ft to 300 ft length.
Hi Steve, I use the MFJ 259 and hook up a capacitor of known value ( usually I use 100pf ) in series with the inductor and measure the resonant frequency. You will see a sharp dip in the resistance a
This should be on the Yaesu reflector but I will ask here first. I would like to know if the 1000D disconnects the RCA RX jack antenna from the receiver when the rig goes into the TX mode or do I hav
I am using a four band quad 20 17 15 10 at the home station. I run the 20 17 together to one feed line and the 15 10 to an other feed line with a relay to select the bands. I noticed that the 20m pic
The swr band width depends on the tuning of the driven element and the reflector and the matching stubs. The 4 band quad I have up covers the 20m band with an swr below 2:1 . I think that a 2 element
I plan on putting up a 100 ft. tower this spring and I would like to use 3/8 fiberglass guys. I was wondering if anyone has some 3/8 glass guys available ( 80ft.to 140ft.lenghts) that they would like
Hi Jerry, I am running a stack consisting of a Cushcraft x520 at 150 ft and a c31xr at 100 ft and a klm kt34 at 50 ft. I was able to get the phasing right by using a mobile rig parked about a 1000 ft
Hi Larry, I had a similar problem with my c31 and I had to shorten the 15m driven element 1.25 " each side to get it into the 15m band. I could have gone shorter but its close enough. You should also
Hi Chris, if you look at Kurt Andress K7NV web site he has load analysis of different type tower base installations and guying installations. Your setup would be similar to a pier pin base. If you ha
I am posting this for a friend. His name is Paul and he has a number of Heliax connectors for sale. He can be reached at ve3sy@rac.ca 73 Steve List Sponsored by AN Wireless: AN Wireless handles Rohn
Hi Sylvan, I had the same problem. I shortened the 15m driven element by 1.25 inches on each side which brought the low swr point on 15m to 21.100 mc . I tried every combination of parallel wire and
Hi Chris, your post is interesting reading and I can sympathize with your experience with tuning or should I say taming the Force 12 antenna. I had a similar experience with a C31XR where I had to pu
Hi all, a friend has a quantity of Andrew's L7PNM, L7PMF, L4PNM and L4PMF connectors for sale. If interested email ve3sy@rac.ca ask for Paul. 73 Steve -- FAQ on WWW: http://www.contesting.com/FAQ/tow
Hi all, I am trying to model the dual driven elements a la KLM without much success. I have tried changing the log periodic files that came with Eznec 3 but it does not come up with results I expect.