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21. [TowerTalk] Ameritron Remote Controlled Switches (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 9 Nov 1998 08:14:31 +0000; This topic was discussed on the AMPS list quite recently. In practice, N connectors are *current* limited. Their center pin is quite small, basically similar to a BNC. They will handle several ampere; /archives//html/Towertalk/1998-11/msg00224.html (10,496 bytes)
22. [TowerTalk] Ameritron Remote Controlled Switches (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 10 Nov 1998 20:51:57 +0000; Given your expertise and diligence with assembling N connectors, you probably haven't been taking many chances, especially at HF. Perfect N connectors will handle 1.5kW ICAS at 432MHz (Reference: K1F; /archives//html/Towertalk/1998-11/msg00271.html (12,245 bytes)
23. [TowerTalk] Neat tramming trick (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sun, 4 Oct 1998 08:56:10 +0100; The British Navy show off this technique every year in a race between crews from two different bases. The aim is to transport a complete field gun through a wall, over a wall and across a "ravine". T; /archives//html/Towertalk/1998-10/msg00061.html (8,001 bytes)
24. [TowerTalk] MFJ-259B at VHF (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 5 Oct 1998 19:23:36 +0100; You don't need another meter - just a good, small dummy load. How accurately does the meter indicate a good 50 ohm load, at 144MHz and at lower frequencies? My guess would be that the meter isn't too; /archives//html/Towertalk/1998-10/msg00082.html (8,561 bytes)
25. [TowerTalk] Multiple Antennas on One Tower (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 7 Sep 1998 13:20:49 +0100; There is information on my web site about stacking VHF/UHF antennas, and basically the same principles apply to HF/VHF. You're unliekly to see much effect from the VHF antennas on the C4XL; but if yo; /archives//html/Towertalk/1998-09/msg00176.html (9,190 bytes)
26. [TowerTalk] return loss (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 29 Sep 1998 07:40:25 +0100; Thank you - I just learned something. If you're using a return loss bridge (three resistors and a diode, details in QST etc) you see a very sharp, deep null in the reflected signal. The better the ma; /archives//html/Towertalk/1998-09/msg00738.html (8,498 bytes)
27. [TowerTalk] Trap loss measurements? (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 24 Aug 1998 22:27:47 +0100; About a year ago, a Towertalkian described how he had estimated the losses in traps by measuring the temperature rise. Please can someone point me to the archive article? (All I could find were the e; /archives//html/Towertalk/1998-08/msg00784.html (7,426 bytes)
28. [TowerTalk] Trap loss measurements? (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 25 Aug 1998 22:36:55 +0100; Thanks to everybody - I have a copy now. 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.demon.co.uk/g3sek -- FAQ on WWW: http://www.conte; /archives//html/Towertalk/1998-08/msg00824.html (7,649 bytes)
29. [TowerTalk] All-thread U-bolts? (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Fri, 28 Aug 1998 07:48:26 +0100; A friend whose engineering company has a U-bolt bender suggested that a solution to the problem of U-bolt slippage is to bend the whole U-bolt out of threaded stock. Even at moderate tightness, the t; /archives//html/Towertalk/1998-08/msg00939.html (7,595 bytes)
30. [TowerTalk] Cage Antenna Construction Hints? (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Fri, 28 Aug 1998 07:31:24 +0100; For even larger diameters, someone years ago wrote about making spreaders out of lightweight alloy rims from racing bike wheels. Rejects from the local bike shop should be very cheap, and they come c; /archives//html/Towertalk/1998-08/msg00940.html (8,977 bytes)
31. [TowerTalk] Cage Antenna Construction Hints? (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Fri, 28 Aug 1998 17:51:12 +0100; I did say the magazine article was "years ago" - it might even have been before Hula Hoops... and that's a *very* long time! 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist fo; /archives//html/Towertalk/1998-08/msg00952.html (9,083 bytes)
32. [TowerTalk] Info handling - thanks (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Wed, 1 Jul 1998 13:18:17 +0100; Here's another thought: use e-mail software that automatically handles and classifies reflector mail. My wife and I are subscribed to 16 reflectors for work and hobbies, but the Turnpike mail/news so; /archives//html/Towertalk/1998-07/msg00031.html (8,422 bytes)
33. [TowerTalk] MFJ259B: Vers. 6F0 vs. 6F1 ? (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 16 Jul 1998 07:30:55 +0100; Maybe we're being spoiled by these modern slow-tuning transceivers. It's perfectly possible to set the 259 to 10kHz at 7MHz, which is closer than almost any real antenna system could recognise. There; /archives//html/Towertalk/1998-07/msg00475.html (10,076 bytes)
34. [TowerTalk] Re: 259B (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sun, 19 Jul 1998 21:18:26 +0100; If Tom says otherwise, then that was indeed misinformation from me about the 259B; but it did appear to have been true of the AEA. 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' column; /archives//html/Towertalk/1998-07/msg00557.html (7,161 bytes)
35. [TowerTalk] 9913 in rotating app (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 20 Jul 1998 22:41:00 +0100; If you're going to use this cable, you have to treat it as "consumable", and expect it to fail after a certain total amount of flexing... but that could be a long time, depending on your operating ha; /archives//html/Towertalk/1998-07/msg00597.html (9,132 bytes)
36. [TowerTalk] An Interesting Experiment (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Wed, 22 Jul 1998 19:11:08 +0100; It goes into rec.radio.amateur.antenna to be argued about forever! Please, please, not here too... 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist for RadCom (RSGB) http://www; /archives//html/Towertalk/1998-07/msg00695.html (8,534 bytes)
37. [TowerTalk] PL-259's at VHF (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Fri, 24 Jul 1998 15:59:02 +0100; The problem is more than the dB loss of individual connectors. The loss of a PL-259 is mainly due to a small impedance bump - it isn't a constant-impedance 50 ohm connector. The reflection from one P; /archives//html/Towertalk/1998-07/msg00809.html (9,523 bytes)
38. [TowerTalk] Reflections, Conjugate Matching and Jim Reid's comments (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Wed, 29 Jul 1998 09:09:38 +0100; Trying to expand and clarify this... It makes practical sense for amplifier manufacturers to specify a maximum SWR, because customers can measure SWR but not true R-X impedance. However, in an engine; /archives//html/Towertalk/1998-07/msg00928.html (10,706 bytes)
39. [TowerTalk] How Many Elements in a Yagi? (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 30 Jul 1998 13:45:40 +0100; But that is only for LONG yagis with typically >10 elements. It does not apply to the (electrically) small yagis that are used on HF. 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' col; /archives//html/Towertalk/1998-07/msg00961.html (8,605 bytes)
40. [TowerTalk] Lewallen's Scramble Wound Chokes (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 30 Jul 1998 22:20:29 +0100; Lewallen coined that name, but then discovered that far from being pseudo, they are very much "the real thing". He then started calling them "current baluns" and that seems to be the name that has st; /archives//html/Towertalk/1998-07/msg00990.html (7,616 bytes)

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