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Total 42 documents matching your query.

21. Re: Topband: Rather use N-type (was Re: The answer to PL-259 (score: 1)
Author: <john@kk9a.com>
Date: Sat, 8 Dec 2018 18:43:36 -0500
A BNC connector has a Ø.050 pin and when mated property an N connector has a Ø.120 center pin. John KK9A When you look at an N connector, specifically the center pin - remember that the N connector c
/archives//html/Topband/2018-12/msg00117.html (8,495 bytes)

22. Re: Topband: 4.3 -10 Re: Rather use N-type (was Re: The answer to PL-259 (score: 1)
Author: "john@kk9a.com" <john@kk9a.com>
Date: Mon, 10 Dec 2018 07:35:26 -0500
A few months ago I purchased a few sample 4.3-10 jacks and plugs. I have not tried them yet but the jacks are close in size to N/UHF so replacement should be easy. At the time they were a little diff
/archives//html/Topband/2018-12/msg00125.html (7,518 bytes)

23. Re: Topband: Waller Flag (score: 1)
Author: <john@kk9a.com>
Date: Sat, 15 Dec 2018 22:48:41 -0500
Another RX option that will likely fit on your property is a Pennant. I had one at my Aruba home and while it was no match for those with Beverages it was definitely better than listening on my TX ve
/archives//html/Topband/2018-12/msg00153.html (8,066 bytes)

24. Re: Topband: Topband]Updated K9YC common-mode choke PDF now available (score: 1)
Author: "john@kk9a.com" <john@kk9a.com>
Date: Wed, 23 Jan 2019 14:52:02 -0500
I have been using RG400 to make jumpers for years. It is a nice easy to work with coax that has excellent shielding. RG400 is available surplus for much less than $5/ft. John KK9A Very interesting, J
/archives//html/Topband/2019-01/msg00104.html (7,257 bytes)

25. Re: Topband: [Topband] When is coax 'contaminated' beyond use? (score: 1)
Author: <john@kk9a.com>
Date: Thu, 7 Feb 2019 20:31:01 -0500
It would probably work however Belden 9913 is a poor coax choice for outdoor use. I too have had water pour out of it. I threw all of mine away decades ago and I would suggest you do the same. John K
/archives//html/Topband/2019-02/msg00083.html (7,197 bytes)

26. Re: Topband: 160 portable vertical (score: 1)
Author: john@kk9a.com
Date: Thu, 08 Aug 2019 20:52:46 -0500
Where in the Caribbean? Conditions and antenna requirements are much different depending where you go. As you go south it becomes more noisy and of course you're further from the target areas. One po
/archives//html/Topband/2019-08/msg00203.html (8,465 bytes)

27. Re: Topband: Effect of trees on vertical elements? (score: 1)
Author: john@kk9a.com
Date: Tue, 20 Aug 2019 20:45:58 -0500
I would never consider compromising a TX antenna just to hear better. Perhaps a T vertical with a feedline choke similar to your 80m dipole and feedline radiator footprint would help with any local n
/archives//html/Topband/2019-08/msg00217.html (8,073 bytes)

28. Topband: Hairpin match to inverted L? (score: 1)
Author: john@kk9a.com
Date: Tue, 03 Sep 2019 08:55:25 -0500
A hairpin works great on non-OWA Yagi's so why not use it on a vertical? I used a THHN primitively made hairpin coil on my P40A 160m vertical and it really made the transmitter happy. You will have t
/archives//html/Topband/2019-09/msg00034.html (8,695 bytes)

29. Re: Topband: Protecting an Array Solutions K9AY Loop from Transmitted RF (score: 1)
Author: john@kk9a.com
Date: Fri, 11 Oct 2019 08:50:59 -0500
When I owned my P40A station I had a Pennant very close to my 160m TX vertical. A K9AY preamp was at the RX antenna feedpoint with voltage fed though the coax. If I recall correctly I only shorted th
/archives//html/Topband/2019-10/msg00053.html (8,444 bytes)

30. Re: Topband: Recording Off the Air (score: 1)
Author: john@kk9a.com
Date: Tue, 28 Jan 2020 10:53:35 -0600
I use a Sony ICD-UX560 Its MP3 files names are just numbers with an underscore which are easy to transfer to a PC. It is a tiny 2oz device that takes almost no operating space and it works quite well
/archives//html/Topband/2020-01/msg00342.html (9,547 bytes)

31. Re: Topband: ARRL CW Contest (score: 1)
Author: john@kk9a.com
Date: Sat, 15 Feb 2020 15:32:13 -0600
Perhaps you were on at the wrong time. Most of the 160m contest activity will be for 10 minutes or so after the top of the hour. John KK9A Very curious . . . I came on 160m last night to see what NA
/archives//html/Topband/2020-02/msg00131.html (7,762 bytes)

32. Re: Topband: K9AY Loop Questions (score: 1)
Author: <john@kk9a.com>
Date: Wed, 5 Jan 2022 21:23:12 -0500
I tried an AY loop decades ago, without the Array Solutions adjustable termination controller, and I do not remember it being that useful for RX. The antenna is ground dependant so perhaps it works b
/archives//html/Topband/2022-01/msg00023.html (9,585 bytes)

33. Re: Topband: CQ160 CW - In Memory of Gene Walsh N2AA (score: 1)
Author: <john@kk9a.com>
Date: Sat, 29 Jan 2022 18:57:46 -0500
What a great way to honor your team member. Your 160m team has been around longer than I thought, congratulations. A half century ago N2AA was one of the most recognizable contest callsigns. Good luc
/archives//html/Topband/2022-01/msg00149.html (8,215 bytes)

34. Re: Topband: Antenna check for V31XX (score: 1)
Author: <john@kk9a.com>
Date: Tue, 1 Feb 2022 22:07:27 -0500
LU8DPM may have a very good station however it is summer in Argentina so QRN is likely much higher than Belize. It is ~4000 miles south of Belize. I have spent a lot of winters in Aruba and it was no
/archives//html/Topband/2022-02/msg00017.html (6,826 bytes)

35. Re: Topband: Dipole/remote tuner (score: 1)
Author: <john@kk9a.com>
Date: Thu, 17 Nov 2022 22:22:18 -0500
You can significantly widen the SWR bandwidth that your radio sees on 80m by using a coax match. Connect your dipole to a 1/2 WL multiple of 50 ohm coax and then add a 1/4 WL section of 75 ohm coax.
/archives//html/Topband/2022-11/msg00075.html (8,153 bytes)

36. Re: Topband: Verticals on the beach (score: 1)
Author: <john@kk9a.com>
Date: Tue, 3 Jan 2023 21:55:52 -0500
I'm not sure if this helps but can you put a smaller vertical near the water's edge and then run a top loading wire angled to the tower top? John KK9A Kenny, It's not easy and in fact I haven't done
/archives//html/Topband/2023-01/msg00004.html (7,684 bytes)

37. Re: Topband: RFI tripping GFI breaker on 160m (score: 1)
Author: <john@kk9a.com>
Date: Tue, 3 Jan 2023 21:55:58 -0500
GFI breakers can be finicky. If a GFI is really needed try a different brand breaker. John KK9A I trip a GFI breaker sometimes on 160m, usually in a contest 1500W. Never had a problem when GFI outlet
/archives//html/Topband/2023-01/msg00005.html (6,892 bytes)

38. Topband: CQ World Wide 160-Meter Contest (score: 1)
Author: <john@kk9a.com>
Date: Sun, 29 Jan 2023 22:29:07 -0500
N2AA is the "Loud Is Good Contest Club" so I guess their name is appropriate:) John KK9A The loudest station from the United States was N2AA. -- Nick, UY0ZG _________________ Searchable Archives: htt
/archives//html/Topband/2023-01/msg00133.html (7,070 bytes)

39. Re: Topband: We need better preamps for 160 because FT8 activity (score: 1)
Author: <john@kk9a.com>
Date: Thu, 25 May 2023 22:57:29 -0400
Tim Duffy's AA7JV R.I.B. interview is on Youtube: https://www.youtube.com/watch?v=1XqBhp7M2Uk John KK9A George, Jim, Where can we find George's work for these items ?? -Charlie N1RR _________________
/archives//html/Topband/2023-05/msg00016.html (7,716 bytes)

40. Re: Topband: Radial Attachment Plate (score: 1)
Author: <john@kk9a.com>
Date: Mon, 30 Oct 2023 23:40:17 -0400
I had a DX Engineering radial plate on my P40A 160m vertical and had zero corrosion. You could cut one in half to go around the tower. Rolling up multiple attached wires would likely become a tangles
/archives//html/Topband/2023-10/msg00066.html (8,589 bytes)


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