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1. Re: [TenTec] Omni VI - test diodes (score: 1): Author: Stuart Rohre <Rohre@arlut.utexas.edu>; Date: Wed, 10 Apr 2019 12:30:07 -0500; Some newer multi-meters have a separate switch position for diode tests. Using that, you can identify cathode end of the diodes. and a higher reading in the reverse direction, if the diode is not ope; /archives//html/TenTec/2019-04/msg00054.html (7,932 bytes)
2. Re: [TenTec] Omni VI - test diodes (score: 1): Author: Malcolm McLeman <f5vbu@cegetel.net>; Date: Thu, 11 Apr 2019 18:36:33 +0200; Thanks again Stuart. Have replied to all your previous but for some obscure they haven't surfaced. Perhaps the moderators can give an answer? 73 Malcolm F5VBU Some read and display junction voltage,; /archives//html/TenTec/2019-04/msg00056.html (8,767 bytes)
3. Re: [TenTec] Omni VI - test diodes (score: 1): Author: Phil Erickson <phil.erickson@gmail.com>; Date: Thu, 11 Apr 2019 14:03:18 -0400; Hi Malcolm, I have an Omni VI+ and a good cellphone camera. Please contact me off list and I will find the diodes on the board and send you a marked photo. I have the rig open for repairs so it will; /archives//html/TenTec/2019-04/msg00057.html (9,773 bytes)
4. Re: [TenTec] Omni VI - test diodes (score: 1): Author: Stuart Rohre <Rohre@arlut.utexas.edu>; Date: Thu, 11 Apr 2019 14:05:00 -0500; Malcolm, Glad the other guy with Omni VI opened up and offered to photo his diode board, should put you in business to test yours. 73, Stuart Rohre K5KVH _____________________________________________; /archives//html/TenTec/2019-04/msg00058.html (7,923 bytes)
5. Re: [TenTec] Omni VI - test diodes (score: 1): Author: Malcolm McLeman <f5vbu@cegetel.net>; Date: Fri, 12 Apr 2019 06:15:06 +0200; Thanks Stuart... As this is my third venture into O6 LPF receive chain diodes would like to know why this consistent failure to an otherwise superb transceiver with one big design fault aka Achilles; /archives//html/TenTec/2019-04/msg00060.html (8,778 bytes)
6. Re: [TenTec] Omni VI - test diodes (score: 1): Author: Stuart Rohre <Rohre@arlut.utexas.edu>; Date: Fri, 12 Apr 2019 13:07:21 -0500; It is possible they needed a more rugged diode; but one that can switch at a fast RF rate. -Stuart K5KVH _______________________________________________ TenTec mailing list TenTec@contesting.com http; /archives//html/TenTec/2019-04/msg00066.html (8,528 bytes)
7. Re: [TenTec] Omni VI - test diodes (score: 1): Author: Phil Erickson <phil.erickson@gmail.com>; Date: Fri, 12 Apr 2019 14:17:09 -0400; Hi Stuart, Also in play is the diode capacitance (related to switching speed of course) and the forward resistance. The BA482 high speed diodes specified on the BPF board have only 1-2 pF capacitance; /archives//html/TenTec/2019-04/msg00067.html (9,268 bytes)
8. Re: [TenTec] Omni VI - test diodes (score: 1): Author: Stuart Rohre <Rohre@arlut.utexas.edu>; Date: Fri, 12 Apr 2019 16:27:57 -0500; All true diode parameters concerns with the OEM diodes. I wonder if anyone has investigated if the rigs with failing diodes are left plugged into antenna 24/7? It might be accumulation of wind static; /archives//html/TenTec/2019-04/msg00068.html (9,660 bytes)

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