Some folks with megastations like yours tend to lose sight of how the majority of hams have to live. A month ago, I sat at my mountaintop station in CA and had a bunch of 160 Q's on a Saturday night
The stations you hear (and who hear you) are those with decent antenna farms. Many of us in the contest have poor antennas and lots of receive noise. I and two other of my friends here in Chicago (K9
Yes. There was a lot of QRM (lots of stations in the contest), many of us have lots of noise (same problem that some of the DXpeditions are having now), and no land to construct receive antennas (Bev
This is a contest I haven't worked before and want to this year. There is an obvious error on the link, but it isn't obvious (to this new participant) what the correction should be. The link lists th
WriteLog has a module for Stew Perry. Jim Brown K9YC _______________________________________________ Topband mailing list Topband@contesting.com http://lists.contesting.com/mailman/listinfo/topband
On Fri, 17 Dec 2004 20:40:09 -0800, Richard (Rick) Karlquist (N6RK) wrote: But you had better use a Smith chart for at least part of the design work. Based on its length and the frequency at which it
Probably because resistance to ground of such a limited ground system is fairly high, which adds to the low radiation resistance of your antenna to get you closer to 50 ohms. In other words, you may
I like your #1 and #2 ideas the best, and I've heard some pretty decent signals with this sort of arrangement. But accept it as a given that all of the ideas you've mentioned require a decent ground
Thanks for the pointer, Rudy. The Fair-Rite Products catalog, available free as a pdf on Fair-Rite's website, is also VERY useful and tutorial. Jim Brown K9YC ________________________________________
it I'll take a stab at it, Chuck. I've also measured a bunch of ferrite chokes, both single turn and multiple turns. It is VERY important to understand that these are not transformers, they are choke
1) Consider how the X component affects your particular installation. Would capacitive reactance cause a resonance at the frequency you are transmitting (or at another frequency that could be nearby
I would revise that to say that chokes are most effective and most easily used if there is a low shunting impedance across the load. Yes, I would love to have a low shunt Z across the load, but I'm n
Here's a link to a paper I just finished on Power and Grounding for Audio and Audio/Video systems. While some of the material is specific to the needs of those systems, much of it is generic and appl
What is your aversion to networks? I find that a good L-section tuner will cover all or most of the band with minimal retuning. I use one of the TenTec KW tuners, and have replaced all the fixed capa
Neat idea, John! Here's another. The ARRL AC Power Interference Book by Marv Loftness, KB7KK, observes that a source of arcing is much easier to DF on its VHF components. He says most power system EM
Being "nice" and "civil" clearly hasn't worked. There are two parts to this problem -- the guy who buys a radio with clicks and the company who sells it. These radios are clearly defective. Send them
This is pretty close to what I am doing, and pretty close to the example in Kraus "Antennas". It's the first example in the "Antennas for Special Applications" chapter (21-2.1b in a recent paperback
You (and lots of other guys working HF, especially 160) need to realize that those of us living in cities have noise levels that are 10-20 dB higher than those of us living in the country. Moreover,
Yeah, get out the violins. CU2M actually heard me calling him Saturday night with 100 watts to a bastard long wire from a Chicago city lot but couldn't copy my call. I was thrilled, and at the same t
loss at 1.8 MHz. The only reason I can think of that remote mounting would be better is if the input of the preamp is at an impedance significantly different from that of the cable that comes into th