Here in Maryland, near Washington, D.C., I'm getting a pretty good signal from Radio Sawa, in Kuwait, 1548 kHz. So it may be worth checking to see if Topband is open. --Art Delibert, KB3FJO Send ____
I use an EZ-Hang slingshot to throw rope over the tree limbs, and then use that to pull the wire antenna into place. I remove a length of the outer insulation from an old piece of coax and, once I se
Tom -- Try the trick of taking the outer sheath off a few feet of large diameter coax and slipping it over the rope where it crosses the tree limb. (It may require some duct tape to hold it in the ri
Is anyone in Europe hearing this, who could get a bearing on it from a very different position? Art Delibert KB3FJO _________________ Topband Reflector Archives - http://www.contesting.com/_topband
I've been playing with an amplified Wellbrook ALA 1530S+ loop antenna for about 10 days now. It does a very good job on both close-in and long-distance signals across the SW spectrum, and its ability
The on-line materials about Waller Flags says that a modest size WF would need about 40 dB of gain to boost the signal to a usable level. One of the postings says that cascading two preamps of 20 dB
Tom -- Thanks for the insights. I have no doubt the theory is correct. My sense, though, is that in the denser suburbs, we live in a "fog" of local radio noise, generated by the scores of digital and
Tom -- You asked for the source of the statement about a Waller flag needing 40 dB of preamplification. See http://www.kkn.net/dayton2011/N4ISWallerFlag.pdf at pages 6 and 7. -- Art, KB3FJO _________
In 1969, there was a project called BOMEX, which attempted to study very intensively a segment of the earth's atmosphere in the region of Barbados. One of the things they found was a very fine dust,
You don't need to be in the sticks to put up one or two pennants and get a lot of mileage out of them. I have a fairly small suburban back yard; the other houses are pretty close, and they seem to ha
I have good luck with a pennant antenna, using a DX Engineering pre-amp at the antenna. I live in a densely populated suburb, where it seems like every neighbor has every RF noise-maker ever invented
The product that does this is the MFJ Artificial Ground. Costs about $160. Good luck. Art Delibert, KB3FJO Another thing that might help if the ferrites don't do the job is to run a wire from a serie
Herb -- I don't have Beverages, but rather pennant antennas. I think we have potential problems at both ends of the feedline and need protection at both ends. I use Fair-Rite 31-material snap-on core
Bruce -- The coax isn't buried. A lot of it runs across a concrete pool deck, and then up to a second floor window, so no chance to bury it. For the 31-material snap-on chokes, I use 8 turns of RG-58
And then destroy shareholder value over the long term Off-topic...This is how they realize shareholder's value quickly. :^) 73 de Vince, VA3VF _________________ Topband Reflector Archives - http://ww
Approximately how much delay was there between your transmission and the echo? --Art Delibert, KB3FJO For the first time, I heard my echoes on topband, yesterday morning starting around 05 UTC. They
Thanks. Sounds from your description that the interval was very short, so it was not what has been called a "long-delayed" echo. Art and all, unfortunately, I do not have a PC in the shack outside co
Thanks for these references on magnetospheric ducting. Looks like as good an explanation as any I've seen (and better than most). Art Delibert, KB3FJO I think you'll find this was Magnetospheric Duct
Ive found it useful to put a ferrite choke balun at each end one at the antenna and one at the receiver. Jim Brown, K9YC, has some helpful stuff on the internet about this. Sent from Mail<https://go.
I think thats right if the only issue is your own transmit signal bouncing back from the antenna junction and traveling along the exterior of the feedline. But for receiving, I think a choke at each