Hello Group, I ran two length of 3/4 inch 75 ohm CATV cable 200 foot each to my newly installed tower. one each for 6 and 2M ! What I'm looking for is an impedance transformer to match my radio/anten
There was a company called ZD Engineering(W8ZD) that made them for 2,222,432, and 1296.I "Googled" it and didn't find a company web page. There is info on how to make the matching transformers on the
Ed, Since the ARRL VHF Handbook is not in print, I checked the RSGB VHF Manual. They refer to a Cot (Co-Tangent) transformer which is two short pieces of coax used to transform a 50 ohm line to a 75
Ed, Since you have already run the lines and probably cut them to some preferred length, you may not want to do this. But for what it's worth I don't bother with the matching sections any more. If yo
Group, ZD Engineering was run by Paul Darwactor, W8ZD out of Findlay, OH. Not to put words in his mouth, but I don't think he is making matching transformers any more. (I used to see his display ever
ZD Engineering's assets were purchased by Bill Kelsey, N8ET in 2003. W8ZD's transformers are available from: Kanga US 3521 Spring Lake Dr. Findlay, OH 45840 419-423-4604 877-767-0675 n8et@kangaus.com
Paul, While the technique you describe certainly works, it has the downside that as the line becomes longer in terms of wavelengths (so that it contains more and more 1/2 wavelength sections), the ba
Good deal!! I have bought a lot of stuff from Bill, mostly QRP stuff. Joe W4AAB -- Original Message -- From: "Dave Zeph" <zephd@indy.rr.com> To: <vhfcontesting@contesting.com> Sent: Saturday, July 22
Dave, Thanks for reminding me about that limitation. I have only used this trick at VHF/UHF where I was concerned about a very narrow band of frequencies. I must remember to do some SWR sweeps for co
Using an MFJ-269 analyzer this can be done relatively easy. Just check the user manual. 73, Bill, WF4R _______________________________________________ VHFcontesting mailing list VHFcontesting@contest