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21. Re: [TenTec] OT Antenna Tuners (score: 1): Author: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>; Date: Wed, 23 Jul 2008 08:14:02 -0700; Gerry's analysis is correct -- it's a TRANSFORMER. Depending on the core material (and to some extent, the winding details), it becomes increasingly lossy with increasing frequency. For Fair-Rite #61; /archives//html/TenTec/2008-07/msg00348.html (9,114 bytes)
22. Re: [TenTec] OT Antenna Tuners (score: 1): Author: Marinus Loewensteijn <zl2ml@hotmail.com>; Date: Thu, 24 Jul 2008 03:56:34 +0800; Thank you for correcting the misunderstandings and the information on the toroid material. 73, Marinus, ZL2ML - when I did the replacement of all the byspass capacitors certain boards did not need to; /archives//html/TenTec/2008-07/msg00349.html (10,021 bytes)
23. Re: [TenTec] OT Antenna Tuners (score: 1): Author: "Paul Elliott" <paab@valornet.com>; Date: Wed, 23 Jul 2008 14:08:24 -0800; The L-network, when used as a matching network over wide frequency ranges and/or impedances does have its limitations. When the impedance to be matched approaches 50 ohms, the values of the component; /archives//html/TenTec/2008-07/msg00350.html (9,623 bytes)
24. Re: [TenTec] OT Antenna Tuners (score: 1): Author: Jim WA9YSD <wa9ysd@yahoo.com>; Date: Thu, 24 Jul 2008 14:51:08 -0700 (PDT); With the tuner Marinus built and the no 10M, what happens if one or two tunes were removed and still stay as a 50 : 450 ohm balun? Keep The Faith, Jim K9TF/WA9YSD ____________________________________; /archives//html/TenTec/2008-07/msg00358.html (8,086 bytes)
25. Re: [TenTec] OT Antenna Tuners (score: 1): Author: Marinus Loewensteijn <zl2ml@hotmail.com>; Date: Fri, 25 Jul 2008 18:14:02 +0800; The TenTec design is OK but it would requrie an extra switch and if really getting down to the nitty gritty it is no longer a pure L-match. There was an article in the ARRL Antenna compendium vol 3 t; /archives//html/TenTec/2008-07/msg00360.html (9,640 bytes)
26. Re: [TenTec] OT Antenna Tuners (score: 1): Author: Jim WA9YSD <wa9ysd@yahoo.com>; Date: Sat, 26 Jul 2008 18:29:08 -0700 (PDT); I believe Heath Kit made a bifilar wound open air coil, and it use to match 4:1, 50 to 300 or 75 to 450 ohms coil. Thats before Ferrous type cores were used for you young folk. It was installed in se; /archives//html/TenTec/2008-07/msg00370.html (8,450 bytes)
27. Re: [TenTec] OT Antenna Tuners (score: 1): Author: Ralph Matheny <mathenyr@marietta.edu>; Date: Sun, 27 Jul 2008 10:55:37 -0400 (EDT); Heath had them and B & W did also. I have 2 of the B&W coil sets if anybody is interested. Ralph Matheny K8RYU 207 Gibbons Place Marietta Ohio 45750 mathenyr@marietta.edu ____________________________; /archives//html/TenTec/2008-07/msg00371.html (9,206 bytes)
28. Re: [TenTec] OT Antenna Tuners (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>; Date: Tue, 29 Jul 2008 18:24:30 -0600; But those impedances are 6:1, not 4:1. The DX-60 would load up practically anything including the open coax connector. It wasn't nearly as picky as modern SSB gear. I'm sure I have Heathkit catalogs; /archives//html/TenTec/2008-07/msg00394.html (9,352 bytes)
29. Re: [TenTec] OT Antenna Tuners (score: 1): Author: <n4py@arrl.net>; Date: Tue, 29 Jul 2008 21:44:31 -0400; My first transmitter was DX60. It ran 90 watts input power and about 60 watts output from a single 6146 on CW. Carl Moreschi N4PY 121 Little Bell Drive Bell Mountain Hays, NC 28635 -- Original Messag; /archives//html/TenTec/2008-07/msg00395.html (9,950 bytes)
30. Re: [TenTec] OT Antenna Tuners (score: 1): Author: Jim WA9YSD <wa9ysd@yahoo.com>; Date: Wed, 30 Jul 2008 14:23:27 -0700 (PDT); Yup my first radio was a DX-60A and an NC-190 receiver. I used a 60W light bulb as the dummy load and worked Illinois with it. Keep The Faith, Jim K9TF/WA9YSD ________________________________________; /archives//html/TenTec/2008-07/msg00402.html (8,009 bytes)
31. Re: [TenTec] OT Antenna Tuners (score: 1): Author: "John Cox" <jecox@tri-lakes.net>; Date: Wed, 30 Jul 2008 17:58:07 -0500; My first transmitter was the one shown on page 154 of the 1954 ARRL Radio Amateurs Handbook. A 6AG7 putting out 5 watts. I gave it a few years ago when I moved to Missouri to a fellow aviator that wa; /archives//html/TenTec/2008-07/msg00403.html (10,088 bytes)

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