Re: Topband: A new 160m-only Most Wanted Survey

2011-04-22 Thread Garry Shapiro
Colleagues, On the strength of Jon's report below and several before and since, please QRX with the survey until this glitch is ironed out. (The several entries to the site before release were smooth, including mine, so this is an unwelcome surprise. Never happened to me before during my engin

Re: Topband: What are folks using for a T/R relay in the shack, to switch between beverage and xmit antennas?

2011-04-22 Thread ZR
My TS-940 has the same setup but not the TS-950SD and many other rigs. I use a toggle switch an high isolation DIP relay to do the control, under $5 in parts. Carl KM1H - Original Message - From: "Rik van Riel" To: Sent: Thursday, April 21, 2011 2:52 PM Subject: Re: Topband: What are

Re: Topband: Beverages near the ocean

2011-04-22 Thread ZR
W1KM found that out as they didnt work at all stretched over a saltwater marsh out on his Cape Cod contest station A Beverage needs a relatively poor ground to slow down and tilt the incoming wave. On my extra poor ground rock pile Im amazed at how well they work once I understood the nuances

Re: Topband: A new 160m-only Most Wanted Survey

2011-04-22 Thread Chris G3SVL
At 02:49 22/04/2011, Garry Shapiro wrote: >The survey is up at http://topband2011.semdxa.org and I encourage >you to take a look---and to submit your needs. Gary, There's another way - Club Log. Club Log automatically analyses all logs in it's database to produce most wanted lists. You can fi

Re: Topband: Beverages near the ocean

2011-04-22 Thread Robin
I like your definite answer: It Depends! Truly! It unfortunately seems a bit complex to make a rule other than build it and see! Your experiences match what I would expect, but there seems to be more at work than just distance to seawater. I built several unsuccessful beverages in Yangon ne

Re: Topband: Beverages near the ocean

2011-04-22 Thread k3bu
It depends.. I think George describes the situations well. What I have experienced, say at VE1ZZ: Jack has Eu Beverages, short, long, phased. He is on the rocky ground, close to salt water bay. The best Beverage (most of the time) was the long one, going over rocky terrain and terminated i

Re: Topband: Spam:****, Beverages near the ocean

2011-04-22 Thread Herb Schoenbohm
On 4/21/2011 11:36 AM, Mike Fatchett W0MU wrote: > I was reading ON4UN's Low Band DXing Book and ran across a comment he > made about beverages not working near the ocean and the Heard Is folks > could never get one working. I know we used one from V47 and it worked > great. It was located probab

Re: Topband: 160m vertical with "top loading"

2011-04-22 Thread Jan Erik Holm
Well base loading should be better then linear loading, lower losses. However the base loading LC network has to have low Q or at least "decent" Q. Once I had my 160 vertical linear loaded, it was a 90 foot radiator. I did measure the difference between linear loading and base LC network loading.

Re: Topband: Beverages near the ocean

2011-04-22 Thread Milt -- N5IA
Mike, It is not that they are near an ocean. It is if the conductivity of the salt water is near enough under the beverage element such that the salt water (or salted earth ie. salt marsh) is acting as the other conductor of the "twin lead" transmission line (the Bev wire is one conductor in t

Re: Topband: Beverages near the ocean

2011-04-22 Thread John Langdon
I think it is high ground conductivity that is often true of soil near the ocean, not the ocean per se. 73 John N5CQ -Original Message- From: topband-boun...@contesting.com [mailto:topband-boun...@contesting.com] On Behalf Of Mike Fatchett W0MU Sent: Thursday, April 21, 2011 10:37 AM To:

Re: Topband: Beverages near the ocean

2011-04-22 Thread Arthur Delibert
I think BCB DXers have used them on the coast many times with great results. From what I recall about beverage antenna theory, there may be a problem if the earth underneath is too highly conductive -- i.e., if the antenna is laid out over a salt marsh. > Date: Thu, 21 Apr 2011 09:36:33 -06

Re: Topband: Beverages near the ocean

2011-04-22 Thread GeorgeWallner
On Fri, 22 Apr 2011 16:01:35 -0700 "Robin" wrote: > I like your definite answer: It Depends! Truly! > > It unfortunately seems a bit complex to make a rule >other than build it and see! Your experiences match what >I would expect, but there seems to be more at work than >just distance to s

Re: Topband: Beverages near the ocean

2011-04-22 Thread GEORGE WALLNER
On Thu, 21 Apr 2011 09:36:33 -0600 Mike Fatchett W0MU wrote: > I was reading ON4UN's Low Band DXing Book beverages not >working near the > ocean... Mike, Here is the definite answer: it depends. I have built a number of Beverages near the sea, with varying results. On VK9WWI (Willis Islets)