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21. Re: [TenTec] Antenna measurements (score: 1): Author: shristov <shristov@ptt.rs>; Date: Sat, 20 Apr 2013 00:27:38 +0200; This is incorrect and misleading. Whenever an AC current flows on a wire, there is an accompanying and inseparable AC electromagnetic field surrounding the wire. And the said AC field propagates in a; /archives//html/TenTec/2013-04/msg00198.html (9,824 bytes)
22. Re: [TenTec] Built in SWR meter bannans (score: 1): Author: shristov <shristov@ptt.rs>; Date: Mon, 22 Apr 2013 10:10:02 +0200; In theory, yes, provided that the choke impedance is much higher than antenna impedance. In practice, this means choke impedance >=10 kOhm, which can be achieved only with special attention, and the; /archives//html/TenTec/2013-04/msg00224.html (9,417 bytes)
23. Re: [TenTec] Let's try the message again (score: 1): Author: shristov <shristov@ptt.rs>; Date: Mon, 22 Apr 2013 23:19:29 +0200; Could you, please, pinpoint the place in the book? No, that's wrong. But let's first see what is Kraus actually saying. 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec; /archives//html/TenTec/2013-04/msg00239.html (7,442 bytes)
24. Re: [TenTec] Built in SWR meter bannans (score: 1): Author: shristov <shristov@ptt.rs>; Date: Wed, 24 Apr 2013 11:22:16 +0200; Heat is produced in both the wire and the core. A lossy core wound with a small number of turns, and subjected to substantial common mode VOLTAGE will overheat. 73, Sinisa YT1NT, VE3EA _____________; /archives//html/TenTec/2013-04/msg00282.html (10,379 bytes)
25. Re: [TenTec] Built in SWR meter bannans (score: 1): Author: shristov <shristov@ptt.rs>; Date: Wed, 24 Apr 2013 11:29:15 +0200; ... Steve's analysis is correct. The same analysis repeated for a high impedance antenna will quickly reveal difficulties of using a ferrite chokes with antenna impedances in the hundreds of Ohms ran; /archives//html/TenTec/2013-04/msg00284.html (10,096 bytes)
26. Re: [TenTec] Built in SWR meter bannans (score: 1): Author: shristov <shristov@ptt.rs>; Date: Wed, 24 Apr 2013 19:42:58 +0200; All cores are lossy, and their loss manifests itself by heat generation within the core whenever there is an RF field inside the core. This has nothing to do with wires. running 1.5kW through a chok; /archives//html/TenTec/2013-04/msg00299.html (11,281 bytes)
27. Re: [TenTec] Built in SWR meter bannans (score: 1): Author: shristov <shristov@ptt.rs>; Date: Wed, 24 Apr 2013 21:35:11 +0200; Jerry's treatment of choke baluns has a serious shortcoming: he tested his choke baluns in transmission mode only (i.e. as transmission lines), entirely neglecting the critical aspect of common mode; /archives//html/TenTec/2013-04/msg00302.html (10,090 bytes)
28. Re: [TenTec] Orion 565 tuning encoder (score: 1): Author: shristov <shristov@ptt.rs>; Date: Sat, 21 Jun 2014 16:41:29 +0200; It's OAK GRIGSBY part number 94Q 125-02-00606 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/lis; /archives//html/TenTec/2014-06/msg00175.html (6,897 bytes)
29. Re: [TenTec] Orion 565 tuning encoder (score: 1): Author: shristov <shristov@ptt.rs>; Date: Sat, 21 Jun 2014 19:23:13 +0200; I had the same problem. VFO B encoder had a supply voltage of only 4.66 V. After tightening 4 fixing screws on the A9 board, the voltage at encoder rose to 4.77 V and it started workig. 73, Sinisa __; /archives//html/TenTec/2014-06/msg00177.html (7,344 bytes)
30. Re: [TenTec] Orion 565 tuning encoder (score: 1): Author: shristov <shristov@ptt.rs>; Date: Sun, 22 Jun 2014 00:08:49 +0200; Could you power the VFO B encoder by external +5.0 V? 73, Sinisa _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo; /archives//html/TenTec/2014-06/msg00181.html (8,397 bytes)
31. Re: [TenTec] Orion 565 tuning encoder (score: 1): Author: shristov <shristov@ptt.rs>; Date: Sun, 22 Jun 2014 04:10:15 +0200; Such a drop is certainly excessive. By providing +5.0 V from an external suuply directly to the encoder you can distinguish between a bad encoder and a bad supply, and then make the repair as needed.; /archives//html/TenTec/2014-06/msg00189.html (8,805 bytes)
32. Re: [TenTec] Orion tuning rate (score: 1): Author: shristov <shristov@ptt.rs>; Date: Wed, 09 Jul 2014 22:33:59 +0200; The only thing that you can set separately is "Encoder Rate" in "Others" menu. It should be set to "Fast" for both internal and external encoders, providing 250 steps or 2.5 kHz per rotation with 10; /archives//html/TenTec/2014-07/msg00295.html (7,696 bytes)
33. Re: [TenTec] ESR vs Leakage (score: 1): Author: shristov <shristov@ptt.rs>; Date: Thu, 10 Jul 2014 04:51:01 +0200; No, there is no direct relationship between ESR and DC leakage. 73, Sinisa YT1NT, VE3EA _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesti; /archives//html/TenTec/2014-07/msg00326.html (6,952 bytes)
34. Re: [TenTec] Rigs at WRTC (score: 1): Author: shristov <shristov@ptt.rs>; Date: Sat, 26 Jul 2014 22:14:44 +0200; Well, those graphs are not about TX wideband noise at all. They just show clicks. Are there any graphs that show the TX noise across the entire band, and even other bands? The levels are expected to; /archives//html/TenTec/2014-07/msg00701.html (10,353 bytes)
35. Re: [TenTec] THANK YOU AND APOLOGY - for Billy (score: 1): Author: shristov <shristov@ptt.rs>; Date: Mon, 28 Jul 2014 10:08:23 +0200; The usual practice is this: * TX on, say, 14 MHz, transmits through a 14 MHz bandpass filter, which attenuates the TX noise on 21 MHz. * RX on, say, 21 MHz, receives through a 21 MHz bandpass filter,; /archives//html/TenTec/2014-07/msg00810.html (8,504 bytes)
36. [TenTec] Reliable 4.5 kHz Sweep Needed for Orion 565 (score: 1): Author: shristov <shristov@ptt.rs>; Date: Tue, 05 Aug 2014 10:17:42 +0200; Can somebody recommend a 565 firmware version that has a reliable Sweep operation with 4.5 kHz Sweep Range? It will operate simultaneously with serial communication. It may slow down the things, but; /archives//html/TenTec/2014-08/msg00098.html (9,006 bytes)
37. Re: [TenTec] repairs (score: 1): Author: shristov <shristov@ptt.rs>; Date: Wed, 29 Oct 2014 07:33:54 +0100; PBT (with constant filter bandwidth) is easily done with single conversion and single filter. Just vary VFO and BFO frequencies simultaneosly to keep the resulting carrier frequency unchanged. 73, Si; /archives//html/TenTec/2014-10/msg00309.html (7,704 bytes)
38. Re: [TenTec] repairs (score: 1): Author: shristov <shristov@ptt.rs>; Date: Wed, 29 Oct 2014 08:50:36 +0100; ... Well, the terminology isn't standardised well enough. Orion's PBT works exactly as "IF Shift" in your description, and I'd guess that Palstar rig does the same, judging from LSB and USB marks aro; /archives//html/TenTec/2014-10/msg00312.html (11,221 bytes)
39. [TenTec] Orion 565, board A0, diode D115 (score: 1): Author: shristov <shristov@ptt.rs>; Date: Fri, 04 Sep 2015 00:29:41 +0300; Does anybody know the location of diode D115 on rear I/O board A0, Orion 565? Diode type is CMR1-10, marking C10, 1 A, 1000 V, case SMB. This diode is connected anti-parallel with 13.8 V DC input, af; /archives//html/TenTec/2015-09/msg00007.html (6,880 bytes)
40. Re: [TenTec] Scads of used Icom IC-7300 (score: 1): Author: shristov <shristov@ptt.rs>; Date: Sun, 11 Sep 2016 02:04:00 +0200; 5 mW, not 5 W. 73, Sinisa YT1NT _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec; /archives//html/TenTec/2016-09/msg00144.html (9,590 bytes)

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