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141. Re: [TenTec] WTB: 238 tuner enclosure (or 'needs work' unit) (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Sat, 12 Jan 2008 10:28:38 -0600
The "238" should match your Omni V and VI two-tone grey combination. I had one from the 1998 timeframe that matched. I can't recall if the earlier (brown) version had a different part number or not,
/archives//html/TenTec/2008-01/msg00235.html (9,226 bytes)

142. Re: [TenTec] Heil headphones (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Tue, 15 Jan 2008 16:54:13 -0600
My Orion 1 has the same problem reported in the original posting. I have to run the AF gain at about 75% when driving my Heil ProSet, and unplugging the earphones causes the internal speaker to reall
/archives//html/TenTec/2008-01/msg00319.html (9,202 bytes)

143. Re: [TenTec] Heil headphones (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Tue, 15 Jan 2008 17:54:01 -0600
Thanks, Barry - another reason to return to V1 software, I guess. I keep saying I'm going to do it, and it never seems to happen! 73, Duane Duane Calvin, AC5AA Austin, Texas www.ac5aa.com FWIW, for 4
/archives//html/TenTec/2008-01/msg00324.html (8,998 bytes)

144. Re: [TenTec] Heil headphones (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Wed, 16 Jan 2008 16:32:14 -0600
No, this is just one more reason to move back to 1.37x level firmware. Besides, what's the problem? The nice thing about owning an Orion I is the ability to run 1.x or 2.x firmware. At this point, I
/archives//html/TenTec/2008-01/msg00347.html (11,861 bytes)

145. Re: [TenTec] filters (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Wed, 16 Jan 2008 20:49:54 -0600
I don't know, my Omni VI+ worked great with the Ten-Tec (Network Science) crystal ladder filters. Especially the 250Hz 2nd IF (6.3 Mhz) filter - it's amazing in removing noise. 73, Duane Duane Calvin
/archives//html/TenTec/2008-01/msg00354.html (7,552 bytes)

146. Re: [TenTec] Bird Wattmeter Slug Repair (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Sat, 19 Jan 2008 17:01:13 -0600
"H" range slugs must be low-volume production these days. Wow, $155! 73, Duane Duane Calvin, AC5AA Austin, Texas www.ac5aa.com --Original Message-- From: tentec-bounces@contesting.com [mailto:tentec-
/archives//html/TenTec/2008-01/msg00415.html (8,482 bytes)

147. Re: [TenTec] Antenna Tuner 238 (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Tue, 22 Jan 2008 16:57:55 -0600
Can you describe what kind of problem you're having? Can't find a match? There's not much I can't match with mine, although I've found a few that I can't quite bring down to 1:1 SWR. 73, Duane Duane
/archives//html/TenTec/2008-01/msg00486.html (8,282 bytes)

148. Re: [TenTec] Live and Learn (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Sat, 23 Feb 2008 15:43:28 -0600
We're really wandering off the TT thread, but just to add my 2 cents - if you don't have an account at the bank you want to cash the check at, they probably won't cash it for you. Yep, that's right -
/archives//html/TenTec/2008-02/msg00375.html (13,067 bytes)

149. Re: [TenTec] Orion III (was: Orion firmware gripes!) (score: 1)
Author: Duane Calvin <ac5aa1@gmail.com>
Date: Tue, 26 Feb 2008 17:11:03 -0600
With my Orion I, I use the main RX to pull the DX station out of the mud, QRM, jammers, and cops. It's very important to hear him. The subRX is more than sufficient for listening to and placing my si
/archives//html/TenTec/2008-02/msg00462.html (11,674 bytes)

150. Re: [TenTec] [orion565] Orion II won't transmit or receive (score: 1)
Author: Duane Calvin <ac5aa1@gmail.com>
Date: Sun, 2 Mar 2008 11:06:06 -0600
First, try the various resets beginning with a master reset. 73, Duane. AC5AA Sent from my iPod Duane C. _______________________________________________ TenTec mailing list TenTec@contesting.com http
/archives//html/TenTec/2008-03/msg00013.html (10,294 bytes)

151. Re: [TenTec] Omni VI Plus audio (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Sun, 16 Mar 2008 19:19:45 -0500
Tim, As I remember it, there was a fair amount of ripple in the passband on the VI and VI+, and the Inrad mod is a couple (more?) of capacitors that were designed to help flatten that out a bit more.
/archives//html/TenTec/2008-03/msg00199.html (11,869 bytes)

152. Re: [TenTec] New Sherwood Presentation - Powerpoint & Audio (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Tue, 18 Mar 2008 23:23:09 -0500
Uh, isn't that what BDR (blocking dynamic range) is all about? 73, Duane Duane Calvin, AC5AA Austin, Texas www.ac5aa.com Terry, N4TZ/9 has touched on an important point that has long been a priority
/archives//html/TenTec/2008-03/msg00243.html (9,482 bytes)

153. Re: [TenTec] Orion....use of 250 hz filter (score: 1)
Author: Duane Calvin <ac5aa1@gmail.com>
Date: Tue, 25 Mar 2008 17:13:20 -0500
While it is true that the additional amp stage reduces the dynamic range, that does not mean that in all situations a problem will be seen. I've written about this recently here. If your rx is operat
/archives//html/TenTec/2008-03/msg00327.html (11,377 bytes)

154. Re: [TenTec] Orion....use of 250 hz filter (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Tue, 25 Mar 2008 20:08:55 -0500
John, You are correct- the 500 Hz and 250 Hz will work great for anyone who doesn't have an S9+40 signal right next to them in the band. I wrote about this a week or two ago and got the business from
/archives//html/TenTec/2008-03/msg00332.html (11,440 bytes)

155. Re: [TenTec] TenTec Digest, Vol 64, Issue 6 (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Sat, 5 Apr 2008 15:36:16 -0500
(b) No station may transmit with a transmitter power exceeding 1.5 kW PEP. I guess it's a different output power allowed in Canada? 73, Duane Duane Calvin, AC5AA Austin, Texas www.ac5aa.com --Origin
/archives//html/TenTec/2008-04/msg00047.html (8,376 bytes)

156. Re: [TenTec] TenTec Digest, Vol 64, Issue 6 (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Sat, 5 Apr 2008 17:25:49 -0500
Interesting. 2250 PEP SSB = 1590 W RMS. The Alphas are rated 100% duty cycle "brick on key" at 1.5KW, so 2250 SSB PEP should also be pretty much loafing for the Alpha 87, 89, 91b or 99 or the others
/archives//html/TenTec/2008-04/msg00052.html (11,951 bytes)

157. Re: [TenTec] LEGAL LIMIT PLUS AMP ALPHA 77D (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Mon, 7 Apr 2008 17:50:35 -0500
I really like my Alpha 99 - very solid. However a 3-500 "instant on" amp (my old Centurion) is missed for its ability to be powered and ready to transmit in about 5 seconds vs. the 2.5 minutes requir
/archives//html/TenTec/2008-04/msg00065.html (9,345 bytes)

158. Re: [TenTec] Ten Tec 238A settings? (score: 1)
Author: Duane Calvin <ac5aa1@gmail.com>
Date: Fri, 11 Apr 2008 12:25:18 -0500
To understand it better, you might try measuring the reactance changes across one of the bands in question. Also, remember that as a fraction of the frequency (3500 kHz, for example) the width of the
/archives//html/TenTec/2008-04/msg00119.html (11,051 bytes)

159. Re: [TenTec] amp (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Fri, 11 Apr 2008 19:50:18 -0500
John, You'll find a 600W amp probably does about all you want an amp to do. It makes a big difference over 100w, and is only a half S-unit weaker than max legal limit at the other end of the QSO. I l
/archives//html/TenTec/2008-04/msg00131.html (9,462 bytes)

160. Re: [TenTec] Alpha 89 (score: 1)
Author: "Duane Calvin" <ac5aa1@gmail.com>
Date: Mon, 14 Apr 2008 17:43:01 -0500
The Alpha 89 and 87 are keyed with a different circuit using a PIN diode, where the 91B and 99 use the vacuum relay. My '99 also works FB in QSK by tying it into the keying loop. There are mixed repo
/archives//html/TenTec/2008-04/msg00204.html (9,192 bytes)

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