That is VERY dependent on your QTH. From near San Francisco, with 4 elements at 120 ft, in six years I've never even HEARD EU, AN, SA, or AF on 6M, let alone work them. I do have 6M QSLs from VK, ZL,
I'm not sure what is "preferred", but what I use is a large DPDT knife switch, one side to the tuner, the other position to ground. Although I don't use one, there is always the ever-popular dual spa
I'm not sure what is "preferred", but what I use is a large DPDT knife switch, one side to the tuner, the other position to ground. Although I don't use one, there is always the ever-popular dual spa
Yes, but lightning is not DC. It is a series of short duration pulses resembling AC and should be treated accordingly with little to no inductance in the path. Thus any inductance in line would actua
Further to this, a properly designed balanced feed system should balance the line to ground as opposed to just a balanced output or being balanced above ground. Being properly designed, be it a balun
Bob, that only works with the true link-coupled tuners, such as Johnson Viking, or Annecke. But most people don't have those, so they're hosed. I wanted to post how I do it but can't find pictures. I
He uses two link coupled tuners.......The big Johnson Viking for 75 Meters and a homebrew unit for 160. His main concern is static caused by blowing snow in the winter, not lightning. Enough voltage
Usually a double pole knife switch used to switch antennas would have a double throw. That is in one direction it made the circuit tot he radio, in the other direction it either connected to the rece
Stuart, I have been using spark plugs for 25 years or so. I was trying to find a picture somewhere but couldn't, so I will dig mine out of the junk box and make a photo. My spark plugs were purchased
Sri, forgot the LINK. The Annecke section is here: http://www.dj0ip.de/antenna-matchboxes/a-n-n-e-c-k-e/ 73 Rick, DJ0IP _______________________________________________ TenTec mailing list TenTec@cont
The items you are suggesting, and what Rick describes can be found at: http://www.thewireman.com/prodpix5.html See the pixs. Or you can build your own. I did and they reliably work not only for near-
Cool! So there is still a commercial source for these. One comment on the pictures, though. The spark plugs shown on that link have these funny push on connectors on top. My spark plugs have normal s
The plugs used by The Wireman do have the threaded studs out the top with the push on type nuts. One can sub the nuts of their choice. 73 Bob, K4TAX Cool! So there is still a commercial source for th
I found time today to do some experimenting on this issue of how window-line losses increase when the line gets wet. I took 60ft of 300 Ohm window (JSC 20AWG conductors) and suspended it about 4ft ab
OUTSTANDING JOB STEVE! WELL DONE! I reread Wes' paper and noted he said "the water kept running off of the feedline." So instead of water, he used a "WETTING AGENT" which assured that the wetness rem
Sorry, but I gotta ask... Is the "wetting agent" conductive -- or at least more conductive than rain water? _______________________________________________ TenTec mailing list TenTec@contesting.com h
I'm not sure if you asked me or the group. I have no clue, and I guess there are several types. One thing I know for sure: NOBODY coats their feedline with a wetting agent before it rains. Another th
I've now run this experiment a further 3 times with pretty consistent results: on average, adding the water dropped the velocity factor by 1.8% and increased the matched loss by 0.25db/100ft at 26MHz
Steve, I hope you document the test on your web site. It is extremely useful for people. I'm afraid papers like Wes' scare people away from using commercial window line and most people are afraid to
*After owning several Automatic Tuners, I have found the hard way that most of them just don't have the guts to do what I need. The MFJ-989C is the only High Power and Manual Tuner ever owned at this