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121. Re: [TenTec] Voltages on 50 ohm Dummy Load (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Wed, 8 Jun 2005 11:12:32 -0400
That was a long-winded way of saying that if you measure 387 volts peak into 50 ohms, you've got 1500 W RMS, assuming you've got a pure sine wave. (If you have visible harmonics, you've got real trou
/archives//html/TenTec/2005-06/msg00284.html (8,672 bytes)

122. Re: [TenTec] Voltages on 50 ohm Dummy Load (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Wed, 8 Jun 2005 21:04:46 -0400
Bob, If you've got 274 volts sinewave peak-to-peak, that's .707 * (274 / 2) = 96.8 volts RMS. Across 50 ohms, my number is P = 96.8**2/50 = 187 Watts. RMS volts are what you want, and it's the voltag
/archives//html/TenTec/2005-06/msg00297.html (10,111 bytes)

123. Re: [TenTec] Orion panel readibility (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Wed, 15 Jun 2005 22:31:30 -0400
Voids the warranty and ruins the resale value, of course. ;-) Martin -- martin.ewing@gmail.com http://blog.aa6e.net
/archives//html/TenTec/2005-06/msg00416.html (8,784 bytes)

124. Re: [TenTec] Orion panel readibility (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Thu, 16 Jun 2005 22:21:36 -0400
I've experimented with one solution, which is to place a lamp that shines tangentially to the front panel. It makes those raised black characters stand out nicely. Some forward thinking entrepreneur
/archives//html/TenTec/2005-06/msg00455.html (8,761 bytes)

125. [TenTec] QSY to Orion list? (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Fri, 24 Jun 2005 00:39:25 -0400
The tone on orion@contesting.com (and http://groups.yahoo.com/group/orion565/) is positive. Consider using them for Orion technical issues. We might be doing a favor for other TT'ers. The best postin
/archives//html/TenTec/2005-06/msg00645.html (7,389 bytes)

126. Re: [TenTec] Color for the Orion sreen (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Tue, 3 May 2005 15:40:03 -0400
This sounds like fun, but putting a colored filter can't improve the brightness and probably won't improve the contrast. It will also blur the image to some extent. You might get more help with eithe
/archives//html/TenTec/2005-05/msg00037.html (10,881 bytes)

127. [TenTec] Orion ASCII command info (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Wed, 4 May 2005 15:17:29 -0400
There is a new edition my analysis of the Orion serial command set at http://www.aa6e.net/aa6e/blog/ocommands.html . I am happy to take additions, corrections, or other comments. There are still a nu
/archives//html/TenTec/2005-05/msg00056.html (8,704 bytes)

128. Re: [TenTec] Orion ASCII command info (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Wed, 4 May 2005 20:13:49 -0400
Yes, this is a firmware problem, not a problem with the serial interface -- although you might say there should be a mute on/off serial command. You can get the same effect in software by setting the
/archives//html/TenTec/2005-05/msg00061.html (10,224 bytes)

129. Re: [TenTec] Orion ASCII command info (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Thu, 5 May 2005 11:26:12 -0400
A few functions might not be available via the computer port without extra hardware - for example, the power on/off. (It would be handy to have a computer controlled "sleep" mode, though, to save bat
/archives//html/TenTec/2005-05/msg00074.html (9,685 bytes)

130. Re: [TenTec] Orion ASCII command info (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Thu, 5 May 2005 15:50:18 -0400
For computer interfacing, I'd prefer a digital output - after the ADC and DSP filters (?), but before detection. I suppose a USB ADC card connected to the analog IF would work, if you could find one
/archives//html/TenTec/2005-05/msg00076.html (10,163 bytes)

131. Re: [TenTec] Orion ASCII command info (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Fri, 6 May 2005 00:30:37 -0400
Steve, KB3MM, asks what would you do with a digital IF output on the Orion. Fair question. I've put some thoughts on my blog -- http://blog.aa6e.net . Didn't want to take up bandwidth here, but I'd l
/archives//html/TenTec/2005-05/msg00082.html (9,284 bytes)

132. Re: [TenTec] Orion ASCII command info (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Fri, 6 May 2005 10:25:52 -0400
S/PDIF = Sony/Philips Digital Interconnect Format See http://en.wikipedia.org/wiki/S/PDIF . I believe the IC-7800 supports it FWIW. -Martin
/archives//html/TenTec/2005-05/msg00088.html (8,916 bytes)

133. Re: [TenTec] ORION BCI (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Fri, 27 May 2005 14:01:51 -0400
I'm not sure what you mean by "inline". The Orion attenuator comes after the diode switching matrix and voltage limiting (+/- 5 V) diodes, some of which are being driven nonlinear IMO. If other commo
/archives//html/TenTec/2005-05/msg00490.html (10,102 bytes)

134. Re: [TenTec] ORION BCI (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Fri, 27 May 2005 15:07:36 -0400
Stuart, As I read the schematics, the Orion should be OK up to about 10 Vpp of RF, before the clipping diodes start conducting. (They are reverse biased.) Maybe something else will go nonlinear first
/archives//html/TenTec/2005-05/msg00494.html (10,720 bytes)

135. Re: [TenTec] ORION BCI (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Fri, 27 May 2005 16:52:18 -0400
Steve, I don't doubt your reports. Vacuum tubes are the best for strong signals! Can you measure the actual BC voltage at the antenna terminals? 73 Martin AA6E -- martin.ewing@gmail.com http://blog.a
/archives//html/TenTec/2005-05/msg00499.html (9,834 bytes)

136. Re: [TenTec] orion firmware (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Sat, 28 May 2005 19:35:46 -0400
Except someone referred to 1.373beta that they were testing! -- martin.ewing@gmail.com http://blog.aa6e.net
/archives//html/TenTec/2005-05/msg00545.html (8,403 bytes)

137. Re: [TenTec] orion problems (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Tue, 31 May 2005 11:29:40 -0400
Orion users are more verbal and passionate! 73, Martin, AA6E -- martin.ewing@gmail.com http://blog.aa6e.net
/archives//html/TenTec/2005-05/msg00622.html (8,843 bytes)

138. Re: [TenTec] ORION BCI (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Tue, 31 May 2005 16:39:11 -0400
Some people have trouble with BCI on the Orion, but most people don't. Of course, if you've got it, it's important to you. What would be very helpful, at this point, are some simple engineering tests
/archives//html/TenTec/2005-05/msg00647.html (9,188 bytes)

139. Re: [TenTec] Orion CW operation (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Tue, 31 May 2005 16:51:21 -0400
Great QSK, but no QSOs! Would it be better if the rig inserted "band noise" matched to your current condx when you are in Tx? A sudden switch from band noise to noiseless monitor tone is bound to be
/archives//html/TenTec/2005-05/msg00649.html (8,198 bytes)

140. Re: [TenTec] Inrush Current Protection? (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Fri, 1 Apr 2005 14:37:16 -0500
Minor downsides: power use, temperature & voltage stress reducing lifetime, fire hazard. All are small effects, but non-zero. I leave my power supply on, anyway. -- martin.ewing@gmail.com http://blog
/archives//html/TenTec/2005-04/msg00007.html (7,668 bytes)

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