Search String: Display: Description: Sort:

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+AM\s+broadcast\s+tower\s+and\s+160m\s+dxpedition\s*$/: 30 ]

Total 30 documents matching your query.

1. Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: DALE LONG <dale.long@prodigy.net>
Date: Tue, 25 Feb 2014 12:17:50 -0800 (PST)
Gentlemen:  I have been reluctant to ask for help which did not relate directly to our reflector. But today I got up my courage, so here goes.  I have been invited to lead a group of amateurs to help
/archives//html/Topband/2014-02/msg00451.html (8,935 bytes)

2. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: Richard Karlquist <richard@karlquist.com>
Date: Tue, 25 Feb 2014 12:38:05 -0800
Congratulations on your adventure. In the past, I have seen some of these AM tower efforts ruined by lousy receive conditions. I suggest you get an advance team out to the site to check out the noise
/archives//html/Topband/2014-02/msg00452.html (7,581 bytes)

3. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Tue, 25 Mar 2014 15:56:05 -0400
No, I don't believe 240' is too high - especially if the tower has a base insulator! It would be so close to 1/2 wave on 160, that it could be fed very well as a 1/2 wave radiator on 160, either via
/archives//html/Topband/2014-02/msg00453.html (8,827 bytes)

4. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: Ashton Lee <Ashton.R.Lee@hotmail.com>
Date: Tue, 25 Feb 2014 14:02:44 -0700
I would be especially mindful of corrosion issues in tower planning in the Caribbean. There was a recent article in the Contest Journal on the ever difficult tower corrosion experienced at PJ2T. ____
/archives//html/Topband/2014-02/msg00454.html (10,387 bytes)

5. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: "Joe Subich, W4TV" <lists@subich.com>
Date: Tue, 25 Feb 2014 16:10:23 -0500
73, ... Joe, W4TV In the past, I have seen some of these AM tower efforts ruined by lousy receive conditions. I suggest you get an advance team out to the site to check out the noise level etc. and
/archives//html/Topband/2014-02/msg00455.html (9,154 bytes)

6. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: "Tim Duffy" <k3lr@k3lr.com>
Date: Tue, 25 Feb 2014 16:20:40 -0500
I recently did almost this same project in Tortola, BVI (VP2V) 4 weeks ago. I have been helping as a consultant to ZBVI for the past 20 years. I was part of the team that installed a new 300 ft tower
/archives//html/Topband/2014-02/msg00456.html (10,845 bytes)

7. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Tue, 25 Mar 2014 16:36:45 -0400
Good point! --Original Message-- From: Topband [mailto:topband-bounces@contesting.com] On Behalf Of Ashton Lee Sent: Tuesday, February 25, 2014 4:03 PM To: DALE LONG Cc: topband@contesting.com Subjec
/archives//html/Topband/2014-02/msg00457.html (11,077 bytes)

8. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Tue, 25 Mar 2014 16:45:26 -0400
Well, he's talking about going in November - maybe in time for CQWW CW -but probably not. 73, ... Joe, W4TV _________________ Topband Reflector Archives - http://www.contesting.com/_topband _________
/archives//html/Topband/2014-02/msg00458.html (10,161 bytes)

9. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Tue, 25 Feb 2014 13:51:47 -0800
YES! I had exactly that experience nearly 30 years ago loading a quarter wave tower near Chicago for 860 kHz. Couldn't hear a thing. 73, Jim K9YC _________________ Topband Reflector Archives - http:/
/archives//html/Topband/2014-02/msg00459.html (8,533 bytes)

10. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: "Joe Subich, W4TV" <lists@subich.com>
Date: Tue, 25 Feb 2014 17:07:47 -0500
2. In December of this year, I am organizing a small group to go to Haiti and participate in the 160m contest. (this of course is dependent on the tower being built.) December and 160 meter contest
/archives//html/Topband/2014-02/msg00460.html (11,696 bytes)

11. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: "Gary Smith" <Gary@ka1j.com>
Date: Tue, 25 Feb 2014 17:09:12 -0500
My Inv-L is on a salt marsh on Long Island Sound in Connecticut & I ran two bidirectional 860' beverages over the salt marsh. I had terrible results with the beverages, very noisy and hardly any impr
/archives//html/Topband/2014-02/msg00461.html (11,676 bytes)

12. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: Herb Schoenbohm <herbs@vitelcom.net>
Date: Tue, 25 Feb 2014 18:53:35 -0400
Half wave verticals have been very disappointing to me over the years when I had the tall BC towers in my backyard to play with after midnight on 160. I have had much better result in hanging 1/2 wav
/archives//html/Topband/2014-02/msg00462.html (11,791 bytes)

13. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>
Date: Tue, 25 Mar 2014 18:24:32 -0400
That's not so surprising Gary !! te Way the Beverages and similar slow-wave antennas work is that they depend on the lossy GND underneath for their operation, so a salt marsh would not be a very bene
/archives//html/Topband/2014-02/msg00464.html (12,792 bytes)

14. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: "Tom W8JI" <w8ji@w8ji.com>
Date: Tue, 25 Feb 2014 19:08:22 -0500
Half wave verticals have been very disappointing to me over the years when I had the tall BC towers in my backyard to play with after midnight on 160. I installed a 318 ft insulated base tower in sta
/archives//html/Topband/2014-02/msg00467.html (10,468 bytes)

15. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: "Carl" <km1h@jeremy.mv.com>
Date: Tue, 25 Feb 2014 19:43:32 -0500
Make them shorter and they will often do well over tidal marshes but not over open water. For a 240' tower Id suggest gamma feeding it up at the 1/4 wave point and use 4 elevated radials. It the AM B
/archives//html/Topband/2014-02/msg00468.html (14,499 bytes)

16. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: Ashton Lee <Ashton.R.Lee@hotmail.com>
Date: Tue, 25 Feb 2014 17:47:03 -0700
I thought a bit more about this while a beachfront/salt marsh location might be ideal for building an international broadcast facility, if you were building a station for domestic Haitian audiences y
/archives//html/Topband/2014-02/msg00469.html (12,359 bytes)

17. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: Merv Schweigert <k9fd@flex.com>
Date: Tue, 25 Feb 2014 16:16:23 -1000
Depends on the noise at your location, before I removed the 300 ft towers here I matched one for 160 and ran low power in the Stew Perry a few years ago, ended up number 1 world wide if memory is cor
/archives//html/Topband/2014-02/msg00470.html (10,371 bytes)

18. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Tue, 25 Feb 2014 18:37:16 -0800
Of course. I didn't mean to imply otherwise. But in today's world, it is not safe to assume that any given location will be quiet. I've been to mountain tops that were noisy, thanks to lots of noisy
/archives//html/Topband/2014-02/msg00471.html (10,030 bytes)

19. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: "Tom W8JI" <w8ji@w8ji.com>
Date: Tue, 25 Feb 2014 21:52:17 -0500
Depends on the noise at your location, before I removed the 300 ft towers here I matched one for 160 and ran low power in the Stew Perry a few years ago, ended up number 1 world wide if memory is cor
/archives//html/Topband/2014-02/msg00472.html (9,780 bytes)

20. Re: Topband: AM broadcast tower and 160m dxpedition (score: 1)
Author: "Joshua M. Arritt" <jarritt@vt.edu>
Date: Fri, 28 Feb 2014 20:40:41 -0500
Congrats indeed!! Seconding Rick's comment below -- AM towers make REAL lousy RX antennas. They catch ALL* the front-end-pulverizing noise on 160/80. "Been there, done that..." well, OK, not the dxpe
/archives//html/Topband/2014-02/msg00478.html (10,251 bytes)


This search system is powered by Namazu