8-9 years back I made a beverage system, it went over a marsh. One beverage was 800+' long & the other around 500', I had the proper lengths at the time. I ran PVC piping with a "T" at the top to run the wire through to keep deer from hitting it and to keep it off the Phragmites (swamp reeds) below.
It was the worst antenna I have ever tried to listen on. The dry reeds below rustling in the wind caused so much static that the noise level from it was more than all but a handful of local signals. Took me weeks to install and fight through the jungle of reeds and I ended up taking them down after a couple weeks of frustration. I worked no DX with those Beverages. Sans static from the reeds, they would have been awesome. 73, Gary KA1J > Snow static as well during blizzards do wonders to light up a neon > bulb. I used to put one between my long-wire and ground, even wind > when it would get a good swing would do the same thing > > Fred > VE3FAL > > Sent from my iPhone > Fred VE3FAL/CIW649 > > > > On Oct 31, 2018, at 19:13, Rose <elecraftcov...@gmail.com> wrote: > > > > Fred, > > > > I recall the output capacitor of the pi-net capacitor in my HT-17 > > rythmatically snapping in response to the charged particles of dust > > in the dry Oklahoma air building up on the long wire antenna. (;-) > > > > 73 ! > > > > K0PP > > kengk...@gmail.com > > > >> On Wed, Oct 31, 2018, 16:42 Fred Jensen <k6...@foothill.net wrote: > >> > >> Hmmm ... There seem to be different flavors of static. My > >> reference was to what is often called "precipitation static" [rain, > >> snow, maybe hail] and which can sometimes also be caused by wind > >> blowing sand/dust past the antenna. It sounds like bacon frying in > >> the receiver. Each drop or snowflake acquires a minuscule charge > >> falling or blowing which discharges into the antenna on contact. > >> The typical semiconductor devices in radio front ends these days > >> exhibit a nearly infinite impedance to "ground" and a tiny > >> capacitance. The constant little pulses from the static charge > >> that capacitance with essentially no discharge path. That's what > >> fried the 1st 760 II and then, predictably, the second one. > >> > >> There is also the combined "static" caused by distant > >> thunderstorms. > >> > >> INT QRN: "Are you troubled by static" > >> QRN: "I am troubled by static" > >> > >> which is different than "static" caused by corona or leakage on a > >> high voltage power transmission line. > >> > >> 73, > >> > >> Fred ["Skip"] K6DGW > >> Sparks NV DM09dn > >> Washoe County > >> > >> PS: For those about to tell me "nearly infinite" is a meaningless > >> term, save the BW. I know, I hold a math degree. Just using a > >> little editorial license. > >> > >>> On 10/31/2018 3:10 PM, ab2tc wrote: > >>> Hi, > >>> > >>> It's a dead short circuit for DC and low frequencies thanks to the > >>> SWR bridge (it has a voltage transformer directly across the > >>> antenna > >> terminals). > >>> There seems to be different opinions on what is meant by "static". > >>> To me > >> it > >>> means a slowly varying DC voltage caused by static buildup in the > >>> clouds during or before thunderstorms. The K3(S) is perfectly > >>> protected against these. Some people include the transients that > >>> are caused by actual lightning strikes nearby in the definition of > >>> "static". The K3(S) is not protected against these as they have > >>> very strong high frequency content. > >> For > >>> these extra protection is needed as discussed several places in > >>> this > >> thread. > >>> I have a number of Alpha-Delta switches in my antenna system and > >>> they > >> have > >>> gas discharge tubes, but frankly I have no idea how effective they > >>> are. > >>> > >>> AB2TC - Knut > >>> > >>> > >>> wayne burdick wrote > >>>>> On Oct 30, 2018, at 12:50 PM, Fred Jensen < > >>>> k6dgw@ > >>>> > wrote: > >>>>> Does my K3 have a static bleed across the antenna terminal(s)? > >>>> Yes. > >>>> > >>>> Wayne > >>>> N6KR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
