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1. Topband: How to File BPL Comments with the FCC (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Thu Aug 7 15:55:23 2003; A good example of a "target" for reply comments are the United Power Line Council (UPLC) comments. http://svartifoss2.fcc.gov/prod/ecfs/retrieve.cgi?native_or_pdf=pdf&id_docum ent=6514284754 In their; /archives//html/Topband/2003-08/msg00029.html (9,802 bytes)
2. Topband: A/B testing K6se etc. (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Tue Jul 1 16:29:49 2003; This is a good point. I can imagine a scenario where there is some BC 3rd harmonic coming in off air, and some being generated in the front-end of the receiver under test. The two components could ei; /archives//html/Topband/2003-07/msg00006.html (7,933 bytes)
3. Topband: A/B testing K6se etc. (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Wed Jul 2 06:19:20 2003; Normally I would agree, John, but Earl was talking about signals that were down in the noise. At these levels one might be hard pressed to distinquish 1:1 versus 1:3 behavior. In this case a hi-pass; /archives//html/Topband/2003-07/msg00012.html (9,816 bytes)
4. Topband: Reminder - Deadline for Comments on Broadband Over PowerlineNOI (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Thu Jul 3 09:43:49 2003; Fellow Reflectorites: Just a quick reminder that the deadline for filing comments in response to the FCC's Notice of Inquiry on Broadband over Powerline (BPL) is this coming MONDAY JULY 7, 2003. If y; /archives//html/Topband/2003-07/msg00024.html (8,531 bytes)
5. Topband: New 4-square (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Thu Jul 17 16:45:51 2003; When I was at Home Depot the other day looking around the lawn sprinkler section, I noticed that the were selling fixtures for tunneling under driveways. I don't know how well they work, but you migh; /archives//html/Topband/2003-07/msg00069.html (8,127 bytes)
6. Topband: Omni VI+ A/B Test Results (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Tue Jun 24 06:11:12 2003; How weak were the signals that you guys were listening to? I am wondering if your ranking is just simply a measure of which receivers have the best noise figure. It would be interesting to repeat the; /archives//html/Topband/2003-06/msg00044.html (8,347 bytes)
7. Topband: RE: Omni VI+ A/B Test results (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Tue Jun 24 15:11:53 2003; Tom, et al: In terms of group delay, there is probably a tradeoff between shape factor and delay. Whereas the 60dB points in a filter don't contribute significantly to noise bandwidth, they have a gr; /archives//html/Topband/2003-06/msg00055.html (10,195 bytes)
8. Topband: RE: Omni VI+ A/B Test results (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Tue Jun 24 21:43:19 2003; Interesting observations, Earl. Sounds like the problem with the Orion isn't group delay in the analog IF filters, but rather some other problem. Maybe it has something to do with the linearity of t; /archives//html/Topband/2003-06/msg00062.html (9,120 bytes)
9. Topband: RE: Omni VI+ A/B Test results (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Wed Jun 25 10:43:56 2003; Yes, I agree that the group delay outside the low attenuation range of the filter won't have much effect on what you hear. But look at the group delay characteristics of a typical chebyshev or ellipt; /archives//html/Topband/2003-06/msg00084.html (10,371 bytes)
10. Topband: RE: Omni VI+ A/B Test results (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Wed Jun 25 11:20:20 2003; Yeah, it would be a real gas for the various ham conventions to have a forum with manufacturers invited to setup their rigs for a test drive. The random CW could be dumped to a printer and then compa; /archives//html/Topband/2003-06/msg00086.html (8,723 bytes)
11. Topband: Re: Pulse response (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Sat May 3 17:48:58 2003; Brad, With the "mushy" preamps, were you using any kind of bandlimiting filters ahead of them. I am wondering if you have any local BC that is loading up the preamps. Your rigs would high pass filte; /archives//html/Topband/2003-05/msg00023.html (9,079 bytes)
12. Topband: Key clicks (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Sat May 10 22:38:22 2003; This same argument ensued in a design review for a radar that I attended a few months ago. This radar was a good analogy to clicky CW as it has a relatively low PRF (e.g. keying speed) and a very fas; /archives//html/Topband/2003-05/msg00078.html (11,498 bytes)
13. Topband: Key clicks (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Tue May 13 09:56:07 2003; I am kinda of going out on a limb here since the fourier transform isn't expressed as a function of time and thinking about the time vs. spectrum relationship always makes my head hurt. I believe the; /archives//html/Topband/2003-05/msg00102.html (8,942 bytes)
14. Topband: Re: 160 Loaded Vertical Antennas (Barry, W9UCW) (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Sat May 17 18:21:14 2003; The other interesting thing to consider is why a center loaded antenna exhibits a current taper across the inductor whereas the inductor in a base loaded antenna would not (I am assuming here that th; /archives//html/Topband/2003-05/msg00117.html (8,764 bytes)
15. Topband: Re: Re:160 Loaded Vertical Antennas(Barry, W9UCW) (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Mon May 19 06:41:47 2003; Barry, Thanks for your reply comments. With regard to your observations of the current taper's dependence on the loading coil's position (base vs. center), did you compare the current taper in the co; /archives//html/Topband/2003-05/msg00123.html (9,108 bytes)
16. Topband: BC Interference (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Sat Apr 12 20:04:43 2003; Herb, I think you meant to say 4 * (1390) KHz / 3 = 2 *(2780) KHz / 3 = = 5560 KHz / 3 = 1853.33 KHz Good catch! Mike, W4EF..........................; /archives//html/Topband/2003-04/msg00022.html (6,942 bytes)
17. Topband: VP6DIA ON 80 AND 160 FOR EUROPE (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Fri Mar 14 11:53:21 2003; -- Original Message -- identified >VP6DAI calling CQ on 1825.9. He was just about Q5. One call and he came right >back to me. Everything has been recorded. I did NOT spot him because I did not >want; /archives//html/Topband/2003-03/msg00041.html (7,945 bytes)
18. Topband: Tower Detuning (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Sun Feb 16 22:08:49 2003; Tree/Tom, et al: I had a question regarding tower detuning. This past weekend Bob, N6ET and I tried detuning the Rohn 45 tower at W6VIO that is adjacent to our K9AY loop array. We used a technique si; /archives//html/Topband/2003-02/msg00064.html (8,660 bytes)
19. Topband: AH3D (score: 189): Author: W4EF at dellroy.com (Michael Tope); Date: Fri Jan 31 14:38:19 2003; listen for a moment up a station now tremendous noise level While running USA stations on 75 meter SSB, Marti OH2BH announced several times for stations to "spread out" as he was having a very hard; /archives//html/Topband/2003-01/msg00299.html (7,361 bytes)

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