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Total 149 documents matching your query.

1. Re: Topband: Insulated vs. bare wire radials (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 3 Dec 2009 12:55:09 -0600
See this paper by Arch Doty which I put up with his permission several months ago. He makes the case that insulated on or in the ground is better than bare on or in the ground. http://home.fnal.gov/~
/archives//html/Topband/2009-12/msg00034.html (6,971 bytes)

2. Re: Topband: tool for install radials (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Tue, 9 Dec 2014 16:27:34 -0600
That is absolutely not true. There is no difference in performance at any of those depths. 73 Rob K5UJ http://www.antennasbyn6lf.com/files/ground_skin_depth_and_wavelength.pdf _________________ Topb
/archives//html/Topband/2014-12/msg00193.html (8,229 bytes)

3. Re: Topband: tool for install radials (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Tue, 9 Dec 2014 18:45:10 -0600
A few inches is not very deep. The depth issues don't come into play until they are a meter or more down. On the lower end of the medium wave broadcast band, they can be over a meter deep and work fi
/archives//html/Topband/2014-12/msg00201.html (9,011 bytes)

4. Re: Topband: tool for install radials (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 10 Dec 2014 16:48:48 -0600
Lloyd N9LB, you may be correct, but I prefer cited facts and data to back a statement. So to that end I went back and did some reading. In addition to the previous paper I cited, see page 10 here: ht
/archives//html/Topband/2014-12/msg00223.html (10,052 bytes)

5. Re: Topband: Looking for 160m narrow beam RX advice - an interesting com (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 12 Jan 2015 11:39:08 -0600
That won't work. Think about it. You null noise source 1 with one box and feed that to the second box and you use that box to null noise source 2, but noise source 1 is going to come in on the noise
/archives//html/Topband/2015-01/msg00071.html (7,683 bytes)

6. Re: Topband: Brave New World (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 26 Feb 2015 10:57:48 -0600
No offense but I suggest you get some more exciting radio equipment to run. 73 Rob K5UJ _________________ Topband Reflector Archives - http://www.contesting.com/_topband
/archives//html/Topband/2015-02/msg00671.html (8,339 bytes)

7. Re: Topband: Brave New World (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 26 Feb 2015 11:54:03 -0600
I'm calling BS on that one. Tune across the CW bands at night. Very little activity compared to 30 or 40 years ago. Of course, I define CW activity as being real CW operating, i.e. ragchewing, handl
/archives//html/Topband/2015-02/msg00677.html (9,296 bytes)

8. Re: Topband: alternative feedpoint capacitor (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Fri, 7 Aug 2015 16:05:09 -0500
You probably have a current fed vertical so you don't have to worry very much about the voltage on the cap. Any air variable with around 1/4 inch spacing will be fine. It should not be hard to find s
/archives//html/Topband/2015-08/msg00029.html (8,184 bytes)

9. Topband: 2 wl loop, worth the effort? (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 2 Dec 2015 11:53:39 -0600
Hi Gary, It would make a nice receiving antenna. Let's start with a question: Would you put up a loop for 20 meters that is 6 feet off the ground? Height for horizontal antennas must always be though
/archives//html/Topband/2015-12/msg00008.html (7,579 bytes)

10. Re: Topband: 2 wl loop, worth the effort? (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 3 Dec 2015 05:39:33 -0600
I apologize if I ticked anyone off; I'm just trying to help hams understand what is needed to get out. This is not directed at any one person. The topic came up and I have an opinion based on experie
/archives//html/Topband/2015-12/msg00029.html (8,930 bytes)

11. Re: Topband: 2 wl loop, worth the effort? (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 3 Dec 2015 08:46:15 -0600
I should have written "10 dB or more _additional_ noise." This is a serious problem and is on the radar of the medium wave broadcast industry as well: http://www.radioworld.com/article/afcce-symposiu
/archives//html/Topband/2015-12/msg00033.html (8,240 bytes)

12. Re: Topband: QRP (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Tue, 15 Dec 2015 10:09:14 -0600
Two words: Noise and antennas. Noise--yes, millions of cheap junk appliances have destroyed reception. Ever lived next door to a plasma TV? Antennas--Old hams unable to climb or plow in radials and
/archives//html/Topband/2015-12/msg00156.html (7,653 bytes)

13. Topband: Doorknobs (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 21 Dec 2015 12:01:26 -0600
There are doorknobs and there are doorknobs. Most hams know this. But you can't always use just any class 2 RF doorknob, especially in a critical application like a series connection between the tran
/archives//html/Topband/2015-12/msg00295.html (7,725 bytes)

14. Re: Topband: Stew Beef (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Fri, 8 Jan 2016 08:12:31 -0600
I completely agree with Don on this. the incessant and utterly meaningless "599" or "59" because it is programmed in and the operator too lazy to think about a real signal report makes the minimal va
/archives//html/Topband/2016-01/msg00121.html (9,147 bytes)

15. Re: Topband: Am I the only one in step? (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 29 Feb 2016 08:34:34 -0600
Change your complaint to ARRL so it says SSB QRM to digital QSOs and they'll petition the FCC to give you a subband. Rob K5UJ _________________ Topband Reflector Archives - http://www.contesting.com
/archives//html/Topband/2016-02/msg00161.html (7,730 bytes)

16. Re: Topband: Untoward comments on 160 (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 14 Mar 2016 11:45:09 -0500
You are around 35 years out of date. It was harder to get on 160 in the days of the phony "all-band" rigs that covered 10 to 80 meters but now that every plastic box had a button on it for 160 and y
/archives//html/Topband/2016-03/msg00169.html (6,891 bytes)

17. Re: Topband: Untoward (?) comments on 160 (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Tue, 15 Mar 2016 11:36:50 -0500
Larry N7DD, I am sorry you have decided to make this about me. In the future, I suggest you make sure you know your subject before commenting. 73 Rob K5UJ <<<hi rob, 160 meters is all about hearing!
/archives//html/Topband/2016-03/msg00178.html (7,579 bytes)

18. Topband: The band sans noise (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Wed, 20 Apr 2016 08:36:26 -0500
It's a losing battle. You can't stop the imported appliance tsunami that has been going on for years, or consumers buying them and bringing them home and using them. You can run around and try, good
/archives//html/Topband/2016-04/msg00129.html (7,587 bytes)

19. Re: Topband: The band sans noise (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Fri, 22 Apr 2016 11:17:42 -0500
A big complication is that almost everyone's circumstances are different due to variables such as property size. A horizontal loop won't work for me (I tried it) because even though most noise is ve
/archives//html/Topband/2016-04/msg00137.html (9,226 bytes)

20. Re: Topband: The band sans noise (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Fri, 22 Apr 2016 12:42:18 -0500
Throw bricks all you want to the end of time but you'll never change the fact that we tested that antenna and saw its performance first hand; The preamp was designed by Jack Smith at CliftonLabs..I'm
/archives//html/Topband/2016-04/msg00139.html (8,520 bytes)

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