I'm looking for specific information which compares the level of precipitation static on folded vs unfolded antennas (preferably verticals). Is anyone aware of published literature which, for example
Hi Eric, You won't find any data on this, because there isn't any reason to take the data in the first place. Precipitation static is caused by corona discharges from the antenna or from other struct
Tom, How effective are those top-of-the-mast "porcupine" discharge devices, in your experience? Is it worth a trip up the tower, removing big Yagis and lowering the mast, to install one? A lot of was
Interesting! Should I infer from this that it would probably be good practice to form the ends of wire dipoles into smoothly curved loops and perhaps also used insulated wire, in the interest of lowe
Hi, not exactly true. My observation: 20m - two Yagis on two towers - one @52m the other @24m. The "static" is always worse on the high one. Here I agree with Tom. Sometimes it helps to listen on 20m
Depends on who you talk to. Many users and manufacturers of them point out dramatic improvements by using them. Others say that they don't work and aren't worth installing. I tend to think "it couldn
I'm looking for specific information which compares the level of precipitation static on folded vs unfolded antennas (preferably verticals). Is anyone aware of published literature which, for example
the The only thing that seems to help shielding from "precipitation static" is the higher antenna or structure (umbrella effect). I.e. in stacked beams situation, the top beam would have s9+20 noise,
Hi Jim, In most of not all cases, the "charge" you are dealing with is mostly contained in a cloud or cloud cover. (It can be a cloud of dust also, I suppose.) You can NOT bleed off that charge with
Below is my experience with two different antenna designs using only ham equipment for data collection and reference over a period of about six months of day and night comparisons (June-November 1993
... It appears that two different antennas were compared, with different radiation patterns. One quarter wave (monopole) vs. top loaded folded vertical that was resonant around 2.4 MHz. Folded vertic
The folded top loaded vertical was resonant at 7 Mhz with the folded skirt system coupled to the feed line through a series capacitor. The structure's natural resonant for a (30 ohm +/-) feed point w
By using series capacitor you are basically matching (longer) radiator to your feedline, but the longer radiator has different radiation pattern - more compressed to horizon and narrower lobe(s) - di
Hi Ed, This was mainly about precipitation static, but your comments appear to be about noise in general including precipitation static. Remember what causes precipitation static. It is a corona disc
Hello Tom: Thanks for your input. Yes, the original question was about precipitation static. I have never had much of a problem with precipitation static. Only a lightning strike once about 6 years a
Hi Ed, I appreciate your efforts. Unfortunately the conclusions only apply to the antennas mounted at you QTH, and nowhere else. In that environment, you could have induction field (either electric o
My subjective experience with precipitation static... Down on the farm the average noise level is between "S" zero and "S" one. When a rain or snow storm moves toward the my location the noise level
Hi Dave, I observe the same effect, except I have low-height directional receiving antennas that are up to 1/2 mile from my transmitting antennas. Not in my experience, or the experience of others. 1
Hi Tom, Yes, I'm hearing white noise build-up rather than sizzle...my antennas are relatively low for 160m (50-60ft). Storms usually coming from the same direction so can't talk to that...also the st
Hi, Tom, et al, Precisely. And that is my observation as well. It is this exact thing that convinces me that the real mechanism for the snow static is still not really nailed down. If the phenomenon