I modeled my 97-foot Rohn 25 with three yagis on it, and the result seemed to indicate that 50 ohms plus some XsubL was to be found at about 50 feet. I tried a single-wire shunt there, spaced about 3
Rummaging in my junk closet the oither day I came up with a ZJ Beverage Gox. Of course, the schematic is long gone. I vaguely recall that it quit working, which probably means the MMIC is damaged, bu
This is absurd. I have two Yaesu rotators on my shunt-fed tower, one on a side-mount and the other inside the tower. Needless to say, there has been no damage in over 5 years. You just ran into someb
Years ago, W8JI suggested using RF chokes with sufficient inductance to "ground" the non-driven elements of my C-3Es at 160M while maintaining their isolation from the boom on 20-10 meters. The drive
Bud, this is exactly what I did, and it has never worked worth a darn - most times, the fishing weight doesn't get even 15 feet from the slingshot. Where on the slingshot did you attach the reel? Did
Thanks to everyone for their comments. I think the main impediment to success with my system may be the spinning reel. Time for some experiments. 73, Pete N4ZR _______________________________________
I'm thinking of a BOG for this season's RX antenna, after becoming thoroughly disillusioned with my K9AY loop experiments. Problem is, I can only get about 350 feet on the right azimuth (to Europe) a
Does anyone know what these times normally are? I have a local talk station on 1550 KHZ that prevents my using my MFJ to tune my 160m shunt feed, but they reduce from 5 KW to 60 watts (!) at night. I
Thanks to everyone who responded. In the meantime, I had left a phone message with the engineer for the local Clear Channel office, who turns out to be a ham, and he confirmed this morning that power
The rule now says, in part, "Remote receiving sites within the 100 kM are okay. If a networked connected skimmer is within 100 kM of you, go ahead and use it (perhaps that is what is known as a Rever
I may be the last person on this reflector to catch on to compression F connectors, but just in case - these things are so much better than the classical crimp as to defy comparison. I have never bee
If I have a Beverage "hub" from which I want to run several of them, is there any reason not to do the switching on the antenna side of the matching unit, rather than on the coax side? Could save som
Thanks to everyone who responded. Lee's answer seems representative of the bulk of the mail I received. Back to coax switching! 73, Pete N4ZR The World Contest Station Database, updated daily at www.
FWIW, I have several runs of outdoor-rated CAT-5 cable to and from my tower. It is flooded and has a tough jacket to help stave off the chipmunks. 73, Pete N4ZR The World Contest Station Database, up
Did you try heavy common-mode choking? I am using an 8-foot Clifton Engineering active antenna on over 200 feet of feedline, and find that 10 turns of RG-58 on a big Type 31 core, placed at each end
I highly recommend the articles by Jack Smith, K8ZOA on the Clifton Labs web-site. One title talks about 6 dB splitters, but there is much more test data there, including tests of a TV splitter. See
You might want to try this on the RFI@contesting.com reflector. In the meantime, how high in frequency can you hear this. Can you see it on a panoramic display? 73, Pete N4ZR The World Contest Statio
Sure, you can do that, Dan, but a better solution, IMO, is to run a pull-up rope loop through a pulley at the top of the tower. That way, you can attach the insulator at the corner of your inverted L
I just laid down a BOG and would like to evaluate its directivity. In the absence of a calibrated signal source for real pattern measurements, how do you go about this? -- 73, Pete N4ZR The World Con
I'm not sure if WC1M reads this reflector, but a small suggestion - make that "write to your ARRL Director", rather than the Contest *Advisory* Committee. 73, Pete N4ZR The World Contest Station Data