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Total 406 documents matching your query.

261. Re: Topband: UA9YAB - Silent Key (score: 1)
Author: "ZR" <>
Date: Fri, 17 Aug 2012 12:11:02 -0400
It wasnt meant as an ignorant comment so stop trying to start trouble; this has been a very nice forum.... I know many Russians personally and have had them at my home as well as been to theirs if in
/archives//html/Topband/2012-08/msg00255.html (8,256 bytes)

262. Re: Topband: DX Engineering Preselector (score: 1)
Author: "ZR" <>
Date: Fri, 24 Aug 2012 16:19:01 -0400
Why do you feel it is the best? Without knowing the circuit of the limiter I can just surmise that it uses diodes or other non linear device to clip the input above a certain level. Try it ahead of t
/archives//html/Topband/2012-08/msg00301.html (8,367 bytes)

263. Re: Topband: DX Engineering Preselector (score: 1)
Author: "ZR" <>
Date: Fri, 24 Aug 2012 18:04:56 -0400
I understand the process quite well but I dont understand the need for such a device on a Beverage the large majority of the time. The only time Ive used a preamp is on those quietest of nights where
/archives//html/Topband/2012-08/msg00302.html (11,387 bytes)

264. Re: Topband: DX Engineering Preselector (score: 1)
Author: "ZR" <>
Date: Sat, 25 Aug 2012 15:01:27 -0400
"He clearly said he has an 8 circle array, not a Beverage." Yes, John reminded me of that a day ago. So when are you going to publish the schematic and parts list for that preamp that you use? Many o
/archives//html/Topband/2012-08/msg00311.html (13,376 bytes)

265. Re: Topband: Using the K2AV folded counterpoise at VK6VZ (score: 1)
Author: "ZR" <>
Date: Thu, 30 Aug 2012 20:12:48 -0400
Lucky me there is no "HOA" where I live. Mention HOA and everybody says "huh? No way". I am about 4000 feet from the nearest runway but that is for small aircraft and the 4000 feet is from my home to
/archives//html/Topband/2012-08/msg00354.html (8,847 bytes)

266. Re: Topband: Airports (score: 1)
Author: "ZR" <>
Date: Fri, 31 Aug 2012 15:37:29 -0400
There has been a private grass strip at the farm that stretches about 250 acres from directly behind me to almost 3/4 miles down the road. When I first put up the 160' tower which is about 450' from
/archives//html/Topband/2012-09/msg00011.html (10,466 bytes)

267. Re: Topband: Small antenna book (score: 1)
Author: "ZR" <>
Date: Fri, 31 Aug 2012 15:46:32 -0400
Id like to think that many of the OT's that worked the band under the old power restrictions found many suitable small lot antennas. A look thru the old QST's, CQ, Radio, HRM, etc likely will show a
/archives//html/Topband/2012-09/msg00012.html (11,960 bytes)

268. Re: Topband: Small antenna book (score: 1)
Author: "ZR" <>
Date: Fri, 31 Aug 2012 20:37:54 -0400
It would be interesting to compare the FCP against a wire mesh on the ground at the base to 30-50' out in 4-5 spokes as Ive described several times. That made all the difference in the world when 60
/archives//html/Topband/2012-09/msg00013.html (16,757 bytes)

269. Re: Topband: 1/4" tip/sleeve connectors? (score: 1)
Author: "ZR" <>
Date: Sun, 2 Sep 2012 11:15:49 -0400
This is what USN radio patch panels looked like from WW2 at least into the 60's. Very reliable, however finding one or even the parts to use might be a bit hard.
/archives//html/Topband/2012-09/msg00014.html (9,002 bytes)

270. Re: Topband: electrical wavelength (score: 1)
Author: "ZR" <>
Date: Mon, 10 Sep 2012 13:02:22 -0400
I never take anything for granted when accuracy is desired. I use a noise bridge and my receiver to zero in on the exact frequency, the noise backround null is very pronounced with good coax. Beats t
/archives//html/Topband/2012-09/msg00053.html (9,806 bytes)

271. Re: Topband: Old Radios (score: 1)
Author: "ZR" <>
Date: Sun, 16 Sep 2012 15:49:41 -0400
-- Original Message -- From: "Eddy Swynar" <> To: "Tom W8JI" <> Cc: <> Sent: Sunday, September 16, 2012 3:19 PM Subject: Re: Topband: Old Radios
/archives//html/Topband/2012-09/msg00131.html (13,269 bytes)

272. Re: Topband: intersecting ground radials (score: 1)
Author: "ZR" <>
Date: Tue, 18 Sep 2012 08:14:50 -0400
While Im not in a high lightning area we do get some beauties plus Im on top of an exposed hill. The #18 insulated and stranded used on the old Beverages was fine when removed after 20 years and reus
/archives//html/Topband/2012-09/msg00158.html (10,825 bytes)

273. Re: Topband: A read and review on KM5KG's book "Short Antennas for 160Meter Radio". (score: 1)
Author: "ZR" <>
Date: Wed, 19 Sep 2012 13:29:38 -0400
-- Original Message -- From: "Guy Olinger K2AV" <> To: "TopBand List" <> Sent: Wednesday, September 19, 2012 12:24 PM Subject: Topband: A read and review on
/archives//html/Topband/2012-09/msg00183.html (9,295 bytes)

274. Re: Topband: Vertical dipoles in the real world (score: 1)
Author: "ZR" <>
Date: Fri, 21 Sep 2012 13:31:48 -0400
In the early 60's I had a full size 40M vertical on top of a 70' pine tree with a bunch ....maybe 8-10...of radials tossed over the branches and weighted with lead fishing sinkers. It was a superb DX
/archives//html/Topband/2012-09/msg00209.html (10,865 bytes)

275. Re: Topband: Dogleg BOG antenna. (score: 1)
Author: "ZR" <>
Date: Sun, 23 Sep 2012 10:01:06 -0400
I run a 500' BOG that shows excellent directivity and sure doesnt need a preamp. Velocity factor is determined by the ground beneath it and since mine is over rock only 8-24" down it might as well be
/archives//html/Topband/2012-09/msg00228.html (11,386 bytes)

276. Re: Topband: Ground Screens - Another Small Space Option (score: 1)
Author: "ZR" <>
Date: Mon, 24 Sep 2012 22:07:03 -0400
I got the idea of the mesh at work from a Tech Class engineer but dont remember him referencing HRM. This was in the mid 80's and I was complaining about the poor performance of a shunt fed 100' towe
/archives//html/Topband/2012-09/msg00247.html (10,800 bytes)

277. Re: Topband: Response to W8JI's comments about using a K2AVfoldedcounterpoise at VK6VZ (score: 1)
Author: "ZR" <>
Date: Tue, 25 Sep 2012 10:13:23 -0400
I wonder.....Is there is a simple way to compare the field strength of an FCP with my current NON dense and uniform ground system, and draw reasonably accurate conclusions about efficiency improvemen
/archives//html/Topband/2012-09/msg00248.html (12,732 bytes)

278. Re: Topband: CABLE CHOICE (score: 1)
Author: "ZR" <>
Date: Tue, 25 Sep 2012 11:21:12 -0400
_______________________________________________ I'd use an F11 style cable, with flooding compound, for that distance. A couple of rodent bites and a good rain and its all wasted and ready for the t
/archives//html/Topband/2012-09/msg00268.html (9,050 bytes)

279. Re: Topband: Ground Screens - Another Small Space Option (score: 1)
Author: "ZR" <>
Date: Tue, 25 Sep 2012 15:11:26 -0400
Im sure chicken wire lasts longer in the great southwest but it rapidly turns to rust in the acidic soil and acid rain of the New England rust belt. I see rolls of it regularly at our trash transfer
/archives//html/Topband/2012-09/msg00269.html (11,495 bytes)

280. Re: Topband: Ground Screens - Another Small Space Option (score: 1)
Author: "ZR" <>
Date: Wed, 26 Sep 2012 09:29:27 -0400
I've used screens when I needed a wide bandwidth ground system, but never under other conditions. Adding a screen or preferably, additional short radials at the base will assist in stabilizing the re
/archives//html/Topband/2012-09/msg00271.html (9,820 bytes)

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