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301. Re: [TenTec] Centurion is on the Fritz (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Fri, 24 Oct 2014 18:41:48 -0500
One of my trouble shooting tips was to look and see if the tubes are lit. There are two fuses on the filament PC board. One other fuse for the bias circuit is on the QSK board. Both boards are inside
/archives//html/TenTec/2014-10/msg00239.html (15,365 bytes)

302. Re: [TenTec] OMNI VI illness (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Sat, 25 Oct 2014 20:01:08 -0500
Most likely a relay coil open being either K4 and/or K5 on the Low Pass Filter board. Both bands, 17M & 15M, use the same filter section which is switched by those two relays. This is the vertical bo
/archives//html/TenTec/2014-10/msg00243.html (9,137 bytes)

303. Re: [TenTec] OMNI VI illness (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Sat, 25 Oct 2014 20:42:47 -0500
The board will need to be removed from the radio. It is a tight fit between a shield and the back panel. Both top and bottom covers will need to be removed as well as the bracket that supports the sp
/archives//html/TenTec/2014-10/msg00246.html (13,278 bytes)

304. Re: [TenTec] OMNI VI illness (score: 1)
Author: Robert <rmcgraw@blomand.net>
Date: Sun, 26 Oct 2014 08:34:20 -0500
Yes the vacuum desoldering system is great. The board does not plug in. Only cables. The board is held in place by 4 screws. The relay coils are parallel on the board. Applying 12V to one does apply
/archives//html/TenTec/2014-10/msg00250.html (16,583 bytes)

305. Re: [TenTec] repairs (score: 1)
Author: Robert <rmcgraw@blomand.net>
Date: Mon, 27 Oct 2014 14:08:12 -0400
If one has the knowledge and required equipment it's not a problem. Otherwise it might turn out to be a science project with unknown outcome. Bob, K4TAX Sent from my iPhone
/archives//html/TenTec/2014-10/msg00275.html (8,920 bytes)

306. Re: [TenTec] Omni 7 hidden commands? (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Thu, 30 Oct 2014 14:13:07 -0500
The VFO LOCK feature in engaged by pressing and holding the MENU button. The red LED will be on when locked. See the manual, page 13 under "(20)MNU for more details. Yes, I know where there is a "bas
/archives//html/TenTec/2014-10/msg00330.html (9,611 bytes)

307. Re: [TenTec] repairs (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Fri, 31 Oct 2014 11:24:44 -0500
As one that has performed many repairs on the older, less than current, Tentec radios and others, the parts inventory required is astounding. I have some 250 manuals, most all on CD ROM that I access
/archives//html/TenTec/2014-10/msg00341.html (16,470 bytes)

308. Re: [TenTec] repairs (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Fri, 31 Oct 2014 19:00:44 -0500
I can certainly agree on these points. COO is most important to most of us. We have limited funds to spend on our hobby. Thus a $4K radio over 5 years we see the cost is $800 per year or about $67 pe
/archives//html/TenTec/2014-10/msg00349.html (12,115 bytes)

309. Re: [TenTec] TT 940 Power Supply (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Tue, 2 Sep 2014 12:13:08 -0500
Do you have a solid ground wire between the supply and the radio? If not the radio is about 1/8 to 1/4 volt above DC ground. You haven't chopped the 3rd pin ground have you? For safety reasons, it mu
/archives//html/TenTec/2014-09/msg00005.html (11,212 bytes)

310. Re: [TenTec] TT 940 Power Supply (score: 1)
Author: Robert <rmcgraw@blomand.net>
Date: Tue, 2 Sep 2014 13:05:22 -0500
Well I didn't mean to imply "use a solid wire". Should have said "solid ground". In other words the DC negative, as most seem to think, is not adequate for ground connection between the radio and pow
/archives//html/TenTec/2014-09/msg00008.html (13,308 bytes)

311. Re: [TenTec] TT 940 Power Supply (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Tue, 2 Sep 2014 14:21:23 -0500
As many times you will read from my posts that a dedicated ground should exist between the power supply ground and the radio ground. Although Denton seems to confirm adding a ground did correct his c
/archives//html/TenTec/2014-09/msg00010.html (16,370 bytes)

312. Re: [TenTec] TT 940 Power Supply (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Tue, 2 Sep 2014 14:31:33 -0500
You raise a point regarding "industrial grade sine wave ups". I have one of those and in my chasing a noise issue, I opened the case to find the output receptacles each have the neutral terminal {whi
/archives//html/TenTec/2014-09/msg00011.html (15,016 bytes)

313. Re: [TenTec] TT 940 Power Supply (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Tue, 2 Sep 2014 21:48:22 -0500
This is easy to check. With the UPS off and nothing connected to the input or the output, measure the resistance from the neutral terminal on the duplex output to the ground terminal on the duplex ou
/archives//html/TenTec/2014-09/msg00019.html (12,856 bytes)

314. Re: [TenTec] TT 940 Power Supply (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Wed, 3 Sep 2014 15:26:17 -0500
Thanks Stuart for the confirmation. In my configuration, once I lifted the ground strap between Neutral and Ground on the OUTPUT of the UPS being the duplex outlets, there is no continuity between Ne
/archives//html/TenTec/2014-09/msg00023.html (12,927 bytes)

315. Re: [TenTec] RMAs (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Wed, 3 Sep 2014 16:13:34 -0500
Go to the Tentec website, then on the left under Service & Support you will find the necessary info to obtain an RMA. <snip> Repair RMA procedure An RMA is required before sending a product for repai
/archives//html/TenTec/2014-09/msg00026.html (10,210 bytes)

316. [TenTec] Tentec Hamfest REMINDER (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Wed, 3 Sep 2014 16:17:38 -0500
This announcement was posted earlier this year. ** NO TENTEC HAMFEST for 2014** 73 Bob, K4TAX <snip> News about Our Hamfest 2014 Dear Ten-Tec customers and friends, Hamfest at Ten-Tec has been cancel
/archives//html/TenTec/2014-09/msg00027.html (8,760 bytes)

317. Re: [TenTec] RMAs (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Wed, 3 Sep 2014 16:46:53 -0500
Yep and I view better too. I've found from past experience with my former company and me being responsible for service and technical support, one would be amazed as to how many times we received a pr
/archives//html/TenTec/2014-09/msg00029.html (13,563 bytes)

318. Re: [TenTec] Tentec Hamfest REMINDER (score: 1)
Author: Robert <rmcgraw@blomand.net>
Date: Wed, 3 Sep 2014 17:31:59 -0500
Well I'd hate for folks to show up and not realize what has transpired. I booked our campsite in the Smokies before the announcement was made. No problem for me but I'd hate for others to show up....
/archives//html/TenTec/2014-09/msg00033.html (10,537 bytes)

319. Re: [TenTec] Eagle AT slow? (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Sun, 7 Sep 2014 19:37:11 -0500
Well yes, the routine for the Eagle is slower than many other tuners, even the one in the Orion and Omni VII series. Those are different tuners and have their own processor to handle solely the tunin
/archives//html/TenTec/2014-09/msg00050.html (10,884 bytes)

320. Re: [TenTec] Eagle AT slow? (score: 1)
Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Date: Sun, 7 Sep 2014 19:45:33 -0500
Yes, some radios do provide that the ATU will automatically track the transmit frequency. In other cases, the Eagle, the ATU will activate only on user command of pressing TUNE. And every time TUNE i
/archives//html/TenTec/2014-09/msg00051.html (11,074 bytes)

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