I would hazard a guess that few of us enter it with an eye purely on score. If folks only entered contests they would "win" there would only ever be one entrant in each contest, a great loss for us a
once upon a time a long time ago i saw somewhere in a magazine or book, or maybe someone told me, or i heard at a ham club meeting or flea market, or i had a dream while in heart surgery, or my wife
Look on eBay, or Maxgain systems in Georgia owned by Alan Bond. I need 2 vacuum variable caps 500 pf 7.5KV or more. Any suggestions for a reliable source with reasonable prices? 73, Jerry K3BZ ______
This may improve the SWR somewhat in a 300 ohm system, but if you are using a tuner to match 50 ohms to 300 ohms, then you won't seem any noticable improvement. (The tuner setting will compensate for
And one should never rely on a single source of information unless it has been well vetted. That is something that wont happen on Antennex but there are enough qualified people on Eham and here to se
Fortunately it is true since I stipulated qualified people as in plural. That is not true. Accuracy is not determined by a vote or opinion poll. I can give dozens of examples, but one that comes to m
So my question is.... does anyone have actual experience with these antennas (especially the voyager) as compared to other antennas for a specific frequency. Now guys .. I know you cant really compar
While one might claim some theoretical interaction I have not documented any or identified any performance degradation as a result. I see Big Gun Mike, W5UC, has a lot of experience with RX arrays cl
With the following caveat: The very sparse and short buried radial systems he is showing are FAR more lossy in practice than shown in his gain tables. Four twenty foot buried radials beneath a 1/4 wa
This is ~true only for a "far field" analysis (as defined by NEC software) for a vertical monopole -- which includes the propagation losses present in the radiated fields from that monopole, over an
Just how important is a continuos pre-set distance between the wires, anyway...? And who was it that came up with the necessity of equally-spaced wire...? And how did they determine the "optimum" dis
So here's a question. I have a vertical mounted on a cliff side that performs incredibly. My amateur's approach to figuring out why is that I modeled it in EZNEC as being elevated 400 feet. That show
First of all RBN is showing changes well in excess of 6 dB with the removal of loss by replacing a faint radial system with an FCP. Remember that an FCP HAS NO GAIN. It only reduces loss. If the sign
the more i read, it seems raised radials are a fairly easy way to raise the effeciancy of a short vertical. Only if the original ground system is a meager system with significant loss. At my QTH on 4
But feeding a half wave vertical with the base near the ground Don k4kyv And this statement is based on what? Publications, measurements, modeling? I have built a number of 1/2 wave verticals without
Well, I also used a 40m GP with 4 elevated resonant radials about 6' above ground and I worked an awful lot of really good DX with it!! I found it to be about equal to my half-wave vertical dipole fo
There is no magic about 120 radials, and long before 120 radials are reached the increase in field strength pretty much stops. At my house around 30 radials or so, about 1/4 wave long, go flat on eff
That is quite an improvement. I had to have dropped the base impedance from 400 ohms to 40 ohms for it to do that. Things are often magic when we rely on feelings or emotions to measure decibels. ___
Which brands/types are the "good" ones? Maybe some of mine need replacing... BTW, I don't think I've ever met a "substandard double F female" or a substandard double D, for that matter. ;-) 73, Charl
Or the person on here who went from an extensive radial system to a full screen claimed a 5dB improvement but now denys the possibility. Its in the TB archives from 1998. Carl, Please try to stop tha