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Total 219 documents matching your query.

21. Re: Topband: TB digital (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Mon, 17 Sep 2012 11:57:18 -0400
Digital modes are the future. It will give those hams who have limited real estate and monetary resources to enjoy the topband. << Mike Digital modes are not new and there are several ways to enjoy
/archives//html/Topband/2012-09/msg00139.html (8,932 bytes)

22. Re: Topband: Small lot (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Mon, 17 Sep 2012 17:57:38 -0400
HI Larry Nice to hear from you. Congratulations!. Yes Gary is doing a great job with the preamps, huge improvements . I am preparing some equipment's to PT0S DX expedition and George always comment a
/archives//html/Topband/2012-09/msg00143.html (8,001 bytes)

23. Re: Topband: The use of digital modes on 160 metres (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Wed, 19 Sep 2012 10:15:05 -0400
Differentiating operating awards? If you are talking DXCC it has been differentiated for years. SSB award, CW award, DIGITAL/RTTY award and MIXED. I know this because I have them all hanging on my w
/archives//html/Topband/2012-09/msg00165.html (10,427 bytes)

24. Re: Topband: The use of digital modes on 160 metres (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Wed, 19 Sep 2012 19:50:20 -0400
Welcome to the digital age... What with hundreds of so-called "friends" on venues like facebook.com, this was surely the next step, & merely reflects a growing (deplorable) trend... Eddy, sure not,
/archives//html/Topband/2012-09/msg00195.html (10,631 bytes)

25. Re: Topband: Vertical dipoles in the real world (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Fri, 21 Sep 2012 14:40:27 -0400
Yes we do, just remember the signal George AA7JV from Mellish reef, Willis or Chesterfield. BUT the antenna near the water in the beach does not work so well, the antenna must be in the water as you
/archives//html/Topband/2012-09/msg00211.html (9,840 bytes)

26. Re: Topband: Monopole Elev Pattern w.r.t. Earth Conductivity (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Thu, 25 Oct 2012 12:02:19 -0400
Herb A good way to test a TX antenna is to listen to one of the many SDR receivers available on line << We can use the reverse beacon network. RBN, select DX spot HF > 160m http://www.reversebeacon.n
/archives//html/Topband/2012-10/msg00345.html (11,193 bytes)

27. Re: Topband: dipole height (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Tue, 30 Oct 2012 15:34:13 -0400
Hi Rick I had full size 160M dipoles (not inverted vees) up at 9 meters and 18 meters for about six months and did a lot of A/B'ing of them. On receive, there was never any difference in audible S/N
/archives//html/Topband/2012-10/msg00369.html (8,579 bytes)

28. Re: Topband: dipole height (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Tue, 30 Oct 2012 22:54:41 -0400
Jim high RDF number with significant lobes off the back that are only 10 dB down from the main signal << There is no high RDF with lobes 10 db down, or one or another, not both at the same time. Rega
/archives//html/Topband/2012-10/msg00378.html (7,877 bytes)

29. Re: Topband: 160m - better at solar max or solar min? (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Tue, 27 Nov 2012 23:22:09 -0500
Carl Now we just went through the deepest solar min in our lifetimes - which also means we were hit with more GCRs than ever in our recorded history (about 19% more than anything we've seen in the pa
/archives//html/Topband/2012-11/msg00416.html (10,053 bytes)

30. Re: Topband: one-way propagation (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Tue, 4 Dec 2012 18:17:35 -0500
Jim Not always, polarization plays a lot on 160m, in special W-E E-W. Sometimes a signal from Africa dive on the QSB and disappear from the Vertical WF and switching to the horizontal WF the signal i
/archives//html/Topband/2012-12/msg00134.html (11,898 bytes)

31. Re: Topband: one-way propagation (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Tue, 4 Dec 2012 19:42:10 -0500
Jim Is your WF horizontal antenna much higher than the vertical? < Yes, the HWF boom is at 116ft and the VWF=BWF as I used to call it , the boon is at 50ft Both antennas has RDF of 11.5 db, the HWF h
/archives//html/Topband/2012-12/msg00140.html (12,831 bytes)

32. Re: Topband: one- way propagation (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Tue, 4 Dec 2012 20:52:05 -0500
Doug Nope, Nope. I am a firm believer in one-way propagation on 160m, having witnessed it many times. Can we agree, that we disagree.? When the signal is going up the polarization does not matter bec
/archives//html/Topband/2012-12/msg00144.html (8,332 bytes)

33. Re: Topband: one- way propagation (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Tue, 4 Dec 2012 21:05:20 -0500
Here some interesting paper about LF MF polarization http://www.ann-geophys.net/22/1705/2004/angeo-22-1705-2004.pdf This paper, High-latitude propagation studies using a meridional chain of LF/MF/HF
/archives//html/Topband/2012-12/msg00148.html (8,267 bytes)

34. Re: Topband: DX window (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Thu, 6 Dec 2012 11:55:48 -0500
Gary You have a god point, if we don't care they don't mind. I think we cc download the RBN file with all callers on the DX window during the contest, it is available in .csv, easy to filter using ex
/archives//html/Topband/2012-12/msg00209.html (9,292 bytes)

35. Re: Topband: DX window (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Thu, 6 Dec 2012 18:12:03 -0500
Art A DL wondered how many DX can coexist in 5kHz. Not many. << I think 5 KHz can hold a lot of DX , CW and 100 Hz BW can do miracles, however just one local CQ machine gun calling CQ stopping only 2
/archives//html/Topband/2012-12/msg00226.html (8,237 bytes)

36. Re: Topband: alternative to vacuum variables (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Fri, 25 Jan 2013 04:14:01 -0500
information? Yes, there is a great solution, I'm using it for almost 10 years. The issue with capacitors in 160m is the dielectric an most capacitors get hot and change the capacitance. I used 19 x 6
/archives//html/Topband/2013-01/msg00192.html (9,163 bytes)

37. Topband: High performance RX antenna at T6LG (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Thu, 14 Feb 2013 13:09:59 -0500
Hi Top-banders I just got this skype IM for Ilian T6LG and I would like to congratulate Ilian for his dedication on all aspects of Ham radio. hi Jose [12:02:50 PM] Ilian: My log is already uploaded o
/archives//html/Topband/2013-02/msg00132.html (13,265 bytes)

38. Re: Topband: High performance RX antenna at T6LG (score: 1)
Author: "N4IS" <n4is@comcast.net>
Date: Tue, 19 Feb 2013 00:42:15 -0500
Hi Arunas I just wondering what is the reason to separate each of CAT5 pairs? <<< The main problem in high noise environment is common mode noise, The unused wires does not help to eliminate common m
/archives//html/Topband/2013-02/msg00150.html (8,440 bytes)

39. Re: Topband: best core material? (score: 1)
Author: "JC N4IS" <n4is@comcast.net>
Date: Mon, 5 Aug 2013 15:49:37 -0400
If you plan to use the antenna on 160m you'll need 73 material. 43 works 3.8 up. Regards JC N4IS I wasn't going to use a binocular core, Tim - I was going to use the Amidon FT-140-43 OR the FT-140-77
/archives//html/Topband/2013-08/msg00059.html (13,452 bytes)

40. Re: Topband: Zo of an individual CAT5 twisted pair (score: 1)
Author: "JC N4IS" <n4is@comcast.net>
Date: Mon, 12 Aug 2013 17:10:18 -0400
Well, Jim, here is what N4IS stated (bolded words my emphasis) - Hi guys Jim is 100% right, balancing both ends is a MUST. But there is more. I would like to share what happened few month ago with a
/archives//html/Topband/2013-08/msg00153.html (12,739 bytes)


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