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1. RE: Topband: 80 Meter L on 160 Meters (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Sat, 20 Dec 2003 22:12:03 -0000; Use open wire line to produce linear loading for 1.8 on the horizontal portion of the L. Ron W9MAF Asked: .....If I install a full-size 1/4 wave 80 meter vertical and also use it for a 160 meter inve; /archives//html/Topband/2003-12/msg00169.html (9,325 bytes)
2. Topband: The answer is $$$$ (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Mon, 5 Jan 2004 20:52:54 -0000; <snip> 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; /archives//html/Topband/2004-01/msg00043.html (7,110 bytes)
3. Topband: k9ay loop gnd? (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Mon, 12 Jan 2004 17:41:02 -0000; Folks, Have just put up a pair of k9ay crossed loops. Too near my power system, evidently, as I have loud pwr line noise pickup. Although I'm seeing SOME f/b and f/s on the array, it's only maybe 10d; /archives//html/Topband/2004-01/msg00121.html (6,662 bytes)
4. Topband: k9ay loops (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Mon, 12 Jan 2004 22:55:09 -0000; Gang, I've had lots of responses. Some individually replied to, but the number is now large. Before I get into this, I must thank Gary, K9AY. Without knowing if I'd bought one of his products, or sim; /archives//html/Topband/2004-01/msg00122.html (6,800 bytes)
5. Topband: antenna bridge (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Wed, 14 Jan 2004 17:49:31 -0000; I have worked with consulting engineers who used a modified ham rig running on 12v. to set the match on individual towers in a multi-tower setup. For single verticals, it should be fairly straightfor; /archives//html/Topband/2004-01/msg00129.html (6,592 bytes)
6. Topband: The Topband Chronicles (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Sun, 1 Feb 2004 18:52:09 -0000; Gents, I've been following this thread with nostalgic interest. But I haven't saved the stories. It occurs to me that there is the makings of an interesting book in here, for someone with a writing f; /archives//html/Topband/2004-02/msg00003.html (7,083 bytes)
7. Topband: Greyline (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Tue, 3 Feb 2004 12:46:34 -0000; Herb, if you looked at greyline program, you'd see that the SW 'skew' path is the probably propagation route. From where you are, the greyline was probably SSW from you. Although I'm topband antenna; /archives//html/Topband/2004-02/msg00018.html (6,995 bytes)
8. Topband: Receivers, Noise Blankers and Key Clicks (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Tue, 3 Feb 2004 17:30:33 -0000; I won't repeat the previous posts on the topic, except for this... "DSP receivers with wide roofing filters can be a problem..." For anyone with a 756PRO, if you haven't modified the receiver, I can; /archives//html/Topband/2004-02/msg00021.html (7,997 bytes)
9. Topband: dynamic range (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Thu, 5 Feb 2004 14:50:21 -0000; After 50 years in the business, I'm either confused or amazed by the BDR and dynamic range discussions. Maybe I've missed something? 1) What's s9? I've got references indicating 50uV or 100uV. The fr; /archives//html/Topband/2004-02/msg00070.html (8,695 bytes)
10. Topband: BDR redux (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Thu, 5 Feb 2004 17:03:58 -0000; Ok, Ok... dB = 20 log (v2/v1) It was early...not enough caffeine, and I swagged instead of calculating. To make matters worse, at some point I switched from dBm to dBv. DUH. Thanks to all who reminde; /archives//html/Topband/2004-02/msg00079.html (7,411 bytes)
11. Topband: exactly! (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Fri, 6 Feb 2004 12:49:30 -0000; S meters are useful for relative comparisons if verified for a dB change so you can give comparisons between two signal levels. Other than that, they are pretty much sources of meaningless informatio; /archives//html/Topband/2004-02/msg00101.html (8,075 bytes)
12. Topband: etiquette (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Sat, 14 Feb 2004 14:25:26 -0000; But I guess my biggest problem when I do hear Europe, most likely so does the entire E. Coast and I hear "Good to see you again Bob, you are stronger than last night". Hey folks, that would be a new; /archives//html/Topband/2004-02/msg00241.html (8,732 bytes)
13. Topband: phase (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Wed, 14 Apr 2004 11:50:18 -0000; How do you distinguish between a 180 degree phase shift, and polarity reversal? Unless you're timing logic edges, or counting cycles, they look the same to me. I was designing a log-periodic stack a; /archives//html/Topband/2004-04/msg00077.html (7,675 bytes)
14. Topband: RE: 160 mode separation (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Tue, 20 Apr 2004 10:19:38 -0000; If you continually ask for regulation,you will surely get it, eventually. It may, however, not be to your liking. Herb said it best, I think...the global complexities on this band are significant, ma; /archives//html/Topband/2004-04/msg00174.html (7,486 bytes)
15. Topband: mode separation...small stn dx oppty (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Tue, 20 Apr 2004 17:09:08 -0000; If you go back to the 60's, when hardy souls worked topband dxcc with 40 watts, we can't really say we had "A" dx window. In fact, we had a system of enforced split operation, which had SEVERAL dx wi; /archives//html/Topband/2004-04/msg00183.html (7,843 bytes)
16. RE: Topband: mode separation...small stn dx oppty (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Wed, 21 Apr 2004 12:40:38 -0000; All true. I'm considering a serious psk31 topband effort next season. Suburban lot. Wire antennas in trees. Inv L, or carolina windom @ 75'(low). As much power as I can cleanly generate from a pw-1.; /archives//html/Topband/2004-04/msg00194.html (10,793 bytes)
17. Topband: psk/digital experiment (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Thu, 22 Apr 2004 12:05:15 -0000; Folks, I seem to have triggered both interest and anxiety, and caused some speculation with my proposal. So, I have three messages to deliver: 1) 1805 +/- is the presumptive QRG, pending review of in; /archives//html/Topband/2004-04/msg00204.html (8,449 bytes)
18. Topband: EU allocation (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Fri, 23 Apr 2004 08:57:13 -0000; I was advised by a G3 on the PSK reflector that Europe doesn't have allocation below 1810, thus rendering the ARRL bandplan inoperative for weak signal dx work on psk. Can anyone on here confirm that; /archives//html/Topband/2004-04/msg00209.html (7,204 bytes)
19. Topband: mode/freq/mds...the last word (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Sat, 24 Apr 2004 16:49:09 -0000; Folks, Responding to several private communications regarding my proposed psk31/cw/mfsk16 experiment...and this IS my last word, until things are ready to go: US domestic contacts will be made around; /archives//html/Topband/2004-04/msg00221.html (7,298 bytes)
20. Topband: RX antennas (score: 1): Author: "Jim Jarvis" <jimjarvis@comcast.net>; Date: Sat, 8 May 2004 16:20:56 -0000; Hej, Osten, Your friend is right about the coax loop vs. simple inverted vee. Except, of course, the ability to get a null. I presently have a pair of crossed k9ay loops, which work almost as well as; /archives//html/Topband/2004-05/msg00009.html (7,384 bytes)

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