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1. Topband: Shunt Fed Tower Info (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Mon Aug 4 10:45:10 2003; guess antenna I see two problems Bill. First, a half-wave grounded structure is anti-resonant when grounded. Grounding detunes the entire structure. That means you can excite it with current, which; /archives//html/Topband/2003-08/msg00008.html (8,349 bytes)
2. Topband: Shunt Fed Tower Info (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Wed Aug 6 06:32:20 2003; The primary job of a GOOD balun is to present significant series impedance with the feedline for common-mode current. The baluns does this by inserting a high common-mode reactance and loss resistan; /archives//html/Topband/2003-08/msg00019.html (9,126 bytes)
3. Topband: 160/80 antenna (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Wed Aug 6 06:32:21 2003; to 160. Is this practical and does anyone have ideas on constructing the trap ?? Ed, Have a look at: http://www.w8ji.com/traps.htm when selecting a trap. 73 Tom; /archives//html/Topband/2003-08/msg00020.html (6,495 bytes)
4. Topband: Shunt Fed Tower Info (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Wed Aug 6 11:51:22 2003; to carry any Significant amounts of measured data prove otherwise. There is nothing in the article that supports the conclusions of the article. Think about what the article claims. The idea that ma; /archives//html/Topband/2003-08/msg00021.html (8,010 bytes)
5. Topband: Open wire feeder (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Fri Aug 8 11:08:06 2003; Don made a very good point. The longer the low-loss feedline (and higher the SWR) the more rapidly peaks and valleys in impedance occur. I had a 1500-foot open wire line of number 8 solid copper spa; /archives//html/Topband/2003-08/msg00033.html (7,935 bytes)
6. Topband: How to File BPL Comments with the FCC (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Sat Aug 9 15:08:19 2003; Since I work with GEMA (Georgia Emergency Management Agency) and the local Sherriff's department in emergency communications, I'd like to point out another perspective that will help. Red Cross, GEMA; /archives//html/Topband/2003-08/msg00044.html (8,427 bytes)
7. Topband: Help! BPL in Atlanta (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Sun Aug 10 20:42:47 2003; I spent hours searching the web, but can not find where the BPL is installed in a suburb of Atlanta. A local FCC field engineer, in casual conversation about a BC band issue, mentioned they have acti; /archives//html/Topband/2003-08/msg00049.html (6,889 bytes)
8. Topband: Trees as Antennas (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Wed Aug 13 05:39:19 2003; Hi Thomas and all, this >website on using trees for antennas. 100 years ago it seems as though they were shunt >feeding trees allegedly with success on transmit and receive. If trees were even remote; /archives//html/Topband/2003-08/msg00064.html (7,249 bytes)
9. Topband: IC-756pro2 A/B Test Results (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Wed Aug 13 05:39:22 2003; Assuming all of the receivers are limited by external noise and don't have some major flaw, a weak steady carrier in broadband somewhat smooth noise would have a S/N ratio established by selectivity.; /archives//html/Topband/2003-08/msg00065.html (8,477 bytes)
10. Topband: IC-756pro2 A/B Test Results (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Thu Aug 14 06:49:04 2003; Earl is certainly an experienced operator and a great asset to 160. I'm not implying Earl's tests are meaningless, but they cover just one operating condition for one type of listener. Quite frankly,; /archives//html/Topband/2003-08/msg00073.html (8,159 bytes)
11. Topband: How to File BPL Comments With the FCC (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Mon Aug 18 22:02:47 2003; It is important for ANYONE on this reflector who has unresolved or had great difficulty resolving RFI complaints to directly respond to energy companies suggestions they "have no documented complain; /archives//html/Topband/2003-08/msg00091.html (9,059 bytes)
12. Topband: Earl's Evaluation (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Tue Jul 1 09:35:15 2003; (Maybe someone can copy this to the reflectors I am not subscribed to for me.) While I appreciate Earl's efforts to handle a very neglected (but valid) consideration, I'd like to urge everyone to use; /archives//html/Topband/2003-07/msg00003.html (8,627 bytes)
13. Topband: A/B testing K6se etc. (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Tue Jul 1 09:35:16 2003; the would This is a very good point! Earl, how do you know the increase in third harmonic "copy" is not actually from rig defects?? 73 Tom; /archives//html/Topband/2003-07/msg00004.html (8,040 bytes)
14. Topband: A/B testing K6se etc. (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Tue Jul 1 22:20:33 2003; the signals. I noticed the phase noise problem here with one (as I recall it was an Omni 6 someone brought over) when it was side by side with a FT1000D and with my Drakes (which absolutely beat eve; /archives//html/Topband/2003-07/msg00009.html (8,091 bytes)
15. Topband: A/B testing K6se etc. (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Wed Jul 2 07:14:49 2003; should harmonic We should remember this won't likely happen in a typical receiver using an S meter. I've heard many people check S meters at around S-9, put in a pad, and assume since the meter scal; /archives//html/Topband/2003-07/msg00014.html (10,276 bytes)
16. Topband: Using RG-6 for 160m transmission purposes (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Wed Jul 2 12:28:15 2003; effect. However, I RG6 CommScope Cable solid copper center conductor loss vs. copper clad steel (in brackets): MHz dB/100ft 1 .20 (.26) 10 .76 (.81) 50 1.46 (1.46) 100 2.05 (2.05) 200 2.83 (2.83) The; /archives//html/Topband/2003-07/msg00018.html (8,212 bytes)
17. Topband: Using RG-6 for 160m transmission purposes (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Wed Jul 2 14:21:05 2003; The celluar polyethylene dielectric stuff is normally 78%. If you have the type similar to Belden 8215 (double shielded polyethylene dielectric) the VF is 66%. Solid polyethylene is around .66, but f; /archives//html/Topband/2003-07/msg00022.html (8,192 bytes)
18. Topband: Orion receiver optimization doc (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Sat Jul 5 17:44:44 2003; radio. Apparently get Doug and all, I agree the web page makes it sound like a very difficult radio to use, but it doesn't have to be that way. The Orion has the potential to be VERY easy to use, wit; /archives//html/Topband/2003-07/msg00034.html (7,649 bytes)
19. Topband: R4C RF stage modifications (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Fri Jul 11 08:19:02 2003; really lies I wouldn't know what that would be true. If the receiver limits on antenna noise, rather than internal noise, that's all you need in the front end gain or loss. The only other requiremen; /archives//html/Topband/2003-07/msg00048.html (7,977 bytes)
20. Topband: ft1000 mp vs omni 6+ (score: 132): Author: w8ji at contesting.com (Tom Rauch); Date: Fri Jul 18 14:02:04 2003; This is the effect of odd-order IMD. It sounds like the old crowded novice bands with a BFO off, or like random undecipherable CW. Many people dismiss it as "actual sloppy CW signals". The FT1000MP,; /archives//html/Topband/2003-07/msg00077.html (8,260 bytes)

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