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References: [ +from:jim@n7us.net: 28 ]

Total 28 documents matching your query.

1. Topband: Gamma matching crank-up tower (score: 1)
Author: jim@n7us.net (Jim McDonald)
Date: Wed, 23 Oct 2002 21:37:14 -0700
I now have an inverted vee hung at the top of my motorized US Tower 89' crank-up (the one that is rated at 30 square feet in a 50 mph wind). I know I should have a modeling program, but I don't, so I
/archives//html/Topband/2002-10/msg00124.html (7,950 bytes)

2. Topband: MFJ-1026 noise canceller (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Tue, 30 Dec 2003 06:57:13 -0700
Any opinions on the MFJ-1026 noise canceller? Fast enough TR switching for QSK? TR switching relay noise? I tried a JPS ANC-04 and didn't like it, primarily due to the fixed (via resistor) TR delay t
/archives//html/Topband/2003-12/msg00281.html (6,479 bytes)

3. Re: Topband: Key Clicks (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Mon, 5 Jan 2004 06:33:04 -0700
What has K7JA said about the FT-1000D/MP/MARK-V key click problem? Has he responded at all or just provided lip service? Does he read this and the MP reflector? If he and the factory are aware of wha
/archives//html/Topband/2004-01/msg00038.html (6,749 bytes)

4. [RTTY] Visalia rooms (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Sat, 17 Apr 2004 21:56:43 -0700
I have two extra rooms for the International DX Convention in Visalia, CA next weekend. The Holiday Inn, the convention hotel, is fully reserved. The other room is at the John Jay, next door. Both ro
/archives//html/Topband/2004-04/msg00138.html (7,413 bytes)

5. Re: Topband: Mystery signal on 1805 (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Tue, 29 Jun 2004 05:53:00 -0700
The station has an interesting web site: http://www.wwrb.org/ Jim N7US ...Your station is incredibly strong That what it is. They were strong and clear when they gave their ID tonight. I tuned up to
/archives//html/Topband/2004-06/msg00090.html (8,654 bytes)

6. RE: [RTTY] 160 RTTY Contesting (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Sat, 1 Jan 2005 09:03:37 -0700
Why not float these ideas for a 160 RTTY contest on the Topband reflector? Jim N7US Floyd et all, Happy New Year 2005 to all! Whether we are talking "regions" or countries/entities the end result is
/archives//html/Topband/2005-01/msg00004.html (12,867 bytes)

7. Re: Topband: 160 AM BCB filter (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Sat, 20 Aug 2005 20:35:02 -0500
With .7 or .8 dB insertion loss, the power dissipation is something like 15%. The writeup seems to claim it can be used in the transmit path. It would get fairly warm in a contest at 150W, and probab
/archives//html/Topband/2005-08/msg00050.html (7,668 bytes)

8. Re: Topband: 160 AM BCB filter (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Sun, 21 Aug 2005 08:52:14 -0500
I don't see any mention of the 'NQN BCB High Pass Filter (http://www.arraysolutions.com/Products/BCB%20RF%20Filters.htm#top%20of%20pa geon) on the web page. The discussion of the W3NQN product is of
/archives//html/Topband/2005-08/msg00056.html (8,248 bytes)

9. Re: Topband: 160 mtr low signal - CW Pitch (score: 1)
Author: Jim McDonald <jim@n7us.net>
Date: Wed, 29 Nov 2006 10:43:38 -0700
One benefit of a low pitch is the relative difference of pitches when operating in the presence of QRM. If you are listening to a pitch of, say, 300 Hz, and the QRM is 100 Hz from the station you are
/archives//html/Topband/2006-11/msg00195.html (9,190 bytes)

10. Topband: WA0RCR Saturday evening "new" broadcasts 1860 (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Sat, 1 Mar 2008 19:08:40 -0600
Have others heard the WA0RCR amateur radio "news" broadcasts every Saturday on 1860 AM? From his qrz.com listing: Founded the "Gateway 160 Meter Net" on 1,860 KHz in May of 1979. The Gateway 160 Mete
/archives//html/Topband/2008-03/msg00000.html (6,890 bytes)

11. Re: [RTTY] 160 (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Tue, 25 Nov 2008 06:02:13 -0600
I like and operate both RTTY and 160. I agree with Joe. I think his last sentence is particularly interesting. 160 is a special band. It's the narrowest of the non-WARC HF bands. Even SSB seems to be
/archives//html/Topband/2008-11/msg00207.html (8,914 bytes)

12. Re: Topband: BCB Filter (related to Antenna Analyzer question) (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Wed, 14 Oct 2009 17:56:57 -0500
What about W3NQN's filters? http://www.arraysolutions.com/Products/BCB%20RF%20Filters.htm Jim N7US _______________________________________________ Topband mailing list Topband@contesting.com http://l
/archives//html/Topband/2009-10/msg00157.html (8,105 bytes)

13. Re: Topband: Dealing with the rotor on a driven tower (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Tue, 13 Jul 2010 21:36:54 -0500
I have a G-2800SDX. I don't feed the tower, which is a crank-up, though I have used quarter-wave slopers for 80 and 160 with no problems. Jim N7US --Original Message-- I spoke with Yaesu on this ques
/archives//html/Topband/2010-07/msg00065.html (7,786 bytes)

14. Re: Topband: The AM Brick Wall (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Fri, 26 Nov 2010 20:09:46 -0600
I've used the BCB filters from ICE and was satisfied with their performance in my situation. http://www.iceradioproducts.com/filtersrf.html#bcb Jim N7US --Original Message-- I have a 50 kW BC station
/archives//html/Topband/2010-11/msg00117.html (8,180 bytes)

15. Re: [TowerTalk] Topband: your opinion about ICE RF limiter (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Wed, 30 Mar 2011 22:40:57 -0500
I used one and noticed no noise at all. Jim N7US --Original Message-- Hello, What do you guys think about ICE RF limiter (http://www.iceradioproducts.com/reconly.html#rflimiter)? I need to protect my
/archives//html/Topband/2011-03/msg00083.html (7,772 bytes)

16. [CQ-Contest] W9DXCC Convention Sep 16-17, 2011 (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Sun, 17 Jul 2011 20:36:44 -0500
Please consider joining us at the Midwest's best known DX convention, W9DXCC, to be held Friday-Saturday, September 16-17, at the Holiday Inn in Elk Grove Village, IL. The hotel is conveniently locat
/archives//html/Topband/2011-07/msg00015.html (7,877 bytes)

17. Re: Topband: GAP VERTICAL QUESTION (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Tue, 11 Dec 2012 20:45:44 -0600
I had a GAP Voyager when I lived in Albuquerque. My subjective opinion was that it worked well on 80 and 40, was a dud on 20, and was very inefficient on 160, where I was lucky to work east of the Mi
/archives//html/Topband/2012-12/msg00318.html (9,198 bytes)

18. Re: Topband: 'Re: fine whiskey is a daylight beverage (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Tue, 7 May 2013 15:19:24 -0500
I suppose that "We do it in the dark" wouldn't go over very well, right? 73, Jim N7US --Original Message-- "offensive?" How about "Tuesday?" Is THAT offensive too? sheeeeeesh! -- Original Message --
/archives//html/Topband/2013-05/msg00040.html (7,264 bytes)

19. Re: Topband: 'Re: fine whiskey is a daylight beverage (score: 1)
Author: "Jim McDonald" <jim@n7us.net>
Date: Thu, 9 May 2013 10:50:48 -0500
How about? "Topband gets hopping once the sun goes down." 73, Jim N7US --Original Message-- Gotta debate that one, Jim. Hi!Hi! ... Topband signatures ... anything with "Beverage" or type of ... is FB
/archives//html/Topband/2013-05/msg00069.html (8,699 bytes)

20. Re: Topband: 50 ohm direct burial coax cable (score: 1)
Author: "Jim N7US" <jim@n7us.net>
Date: Tue, 3 Jun 2014 09:49:27 -0500
http://www.davisrf.com/buryflex.php 73, Jim N7US --Original Message-- Does anyone know of a source for 50 ohm "RG-8" type direct burial coax cable? I can find many sources for CATV and Satellite 75 o
/archives//html/Topband/2014-06/msg00023.html (8,879 bytes)


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