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101. Re: [TenTec] Orion II roofing filters (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Tue, 27 Dec 2005 14:56:24 -0500
Yes, I could have been clearer. There are different "bands" or passbands to consider. Say you are working CW with the stock 1 kHz roofing filter and you have the DSP BW set to < 300 Hz (assume no PBT
/archives//html/TenTec/2005-12/msg00804.html (10,096 bytes)

102. Re: [TenTec] Best Headphones? (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Tue, 27 Dec 2005 18:15:30 -0500
Thanks to the group for the tip. I got the last pair here in Branford CT @ $9.99. (I also bought a 5 inch black & white TV for $24.99. Cool!) My quick test shows the phones do a pretty good job at ca
/archives//html/TenTec/2005-12/msg00812.html (9,944 bytes)

103. Re: [TenTec] CVS TDE headphones (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Wed, 28 Dec 2005 14:52:39 -0500
In other words, they use traditional lead-based solder, which we have been doing forever in ham radio. The new regulatory environment is making everybody switch to lead-free technologies. This is pro
/archives//html/TenTec/2005-12/msg00870.html (9,066 bytes)

104. Re: [TenTec] Orion II S Meter (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Wed, 28 Dec 2005 15:09:30 -0500
A quick check is to tune in a steady S9 carrier and then switch in 6, 12, and 18 dB attenuation. That should give you S8, S7, S6, respectively. I've found pretty fair agreement on my (classic) Orion.
/archives//html/TenTec/2005-12/msg00874.html (8,349 bytes)

105. Re: [TenTec] Headphones (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Thu, 29 Dec 2005 10:22:04 -0500
They are an interesting toy for $10. Not the best headphones by a long shot, but they could be effective if you have bothersome fan noise. I looked up the Bose headsets for pilots -- a cool $995 prod
/archives//html/TenTec/2005-12/msg00934.html (8,097 bytes)

106. Re: [TenTec] LW receiver (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Sat, 31 Dec 2005 14:13:23 -0500
That would be the image of the 2nd IF = 450 kHz. TT's clever phrase is "specifications apply > 1.8 MHz". I.e., all bets are off below 1.8. The Rx is insensitive, and as you see, image rejection is po
/archives//html/TenTec/2005-12/msg01051.html (8,327 bytes)

107. Re: [TenTec] ORIONII_INTERNAL_AT_TUNER (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Sun, 1 Jan 2006 18:46:17 -0500
The AT gives you some flexibility. My antennas are resonant, too, but I've been able to stretch them. The 80 M dipole does well on 30 M with the AT, and I even manage the occasional contact on 160 us
/archives//html/TenTec/2006-01/msg00027.html (7,720 bytes)

108. Re: [TenTec] SKN results. (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Mon, 2 Jan 2006 10:00:59 -0500
I also dived in for my first SKN. Great fun. It was kind of weird running the Orion and talking to a fellow running a Heathkit DX60. Talk about a distinctive signal! A slight chirp and kind of "shimm
/archives//html/TenTec/2006-01/msg00038.html (8,274 bytes)

109. Re: [TenTec] SKN results - Martin AA6E - I almost called you! (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Mon, 2 Jan 2006 11:14:34 -0500
Hi, Keith, Yes, us "E's" have to hang together. Maybe we need an "echo club" or a "worked all echoes" award? hi It seemed that a lot of people (most?) didn't bother to call CQ SKN. I did, some of the
/archives//html/TenTec/2006-01/msg00042.html (9,081 bytes)

110. [TenTec] Radio Science + QSK = Radar (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Mon, 2 Jan 2006 13:20:32 -0500
When operating QSK at 15-20 wpm, I am running into echoes of my transmissions. These occur on certain azimuth bearings at certain times of day, most often to the SE, which is over water until hitting
/archives//html/TenTec/2006-01/msg00053.html (8,376 bytes)

111. Re: [TenTec] Radio Science + QSK = Radar (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Mon, 2 Jan 2006 14:28:30 -0500
Joel - I usually think of "scattering" as an incoherent process arising from many small scattering centers (density fluctuations). When you hear a clear echo, the response is fairly coherent (with a
/archives//html/TenTec/2006-01/msg00060.html (9,600 bytes)

112. Re: [TenTec] Radio Science + QSK = Radar (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Tue, 3 Jan 2006 00:01:13 -0500
QSK is very helpful, because you hear the echo after every dit or dah. (It's pretty distracting to hear echoes while sending.) I never heard it with my old non-QSK rig with a slow R/T relay. I don't
/archives//html/TenTec/2006-01/msg00095.html (9,485 bytes)

113. [TenTec] Orion Radar early results (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Wed, 4 Jan 2006 10:02:40 -0500
I was fooling around on a "dead" 20 M band last night and got some actual radar data. The Orion works fine, except that there is ~28 msec of dead time between end of Tx and beginning of Rx. This is w
/archives//html/TenTec/2006-01/msg00150.html (7,210 bytes)

114. Re: [TenTec] O2 shipments (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Sat, 7 Jan 2006 15:55:36 -0500
It's probably even better than my old Heathkit AR-3, despite its beautiful copper chassis. 73 Martin AA6E -- martin.ewing@gmail.com http://blog.aa6e.net ______________________________________________
/archives//html/TenTec/2006-01/msg00273.html (8,227 bytes)

115. Re: [TenTec] Orion (1) freq reference setting? (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Sat, 7 Jan 2006 23:50:37 -0500
More at http://blog.aa6e.net/2005/08/orion-frequency-calibration.html and http://blog.aa6e.net/2005/11/orion-recalibrated.html . 73 Martin AA6E -- martin.ewing@gmail.com http://blog.aa6e.net ________
/archives//html/TenTec/2006-01/msg00284.html (9,142 bytes)

116. Re: [TenTec] Orion II Curiosity (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Sun, 8 Jan 2006 22:38:31 -0500
I agree with the previous comments that good speech (hi fi!) will have a very low average power, but should show occasional peaks to 100W. That is part of why you get the good audio reports with the
/archives//html/TenTec/2006-01/msg00311.html (8,930 bytes)

117. Re: [TenTec] Orion II Curiosity (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Mon, 9 Jan 2006 10:31:30 -0500
Careful when running high SP - it makes your mic extremely sensitive. If you use the monitor, it's very easy to get audio feedback & oscillation. On the other hand, your average power shoots up to ne
/archives//html/TenTec/2006-01/msg00322.html (9,217 bytes)

118. Re: [Orion] O2 versus Orion (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Mon, 9 Jan 2006 11:13:15 -0500
Does anyone understand this point? I used to think all the Orion (1) frequencies were derived from the TCXO. I've had reasonable luck tweaking the oscillator for better accuracy, as have others. I ty
/archives//html/TenTec/2006-01/msg00324.html (8,501 bytes)

119. [TenTec] Zerobeat & Radio Features - was O2 vs Orion (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Tue, 10 Jan 2006 22:55:42 -0500
Quite true, the ear is powerful. But I'd like to see a zero beat display - e.g., Lissajous plot of signal vs SPOT or even better, a Fourier transform view that shows phase & freq centered on 0 Hz. Wh
/archives//html/TenTec/2006-01/msg00397.html (8,323 bytes)

120. Re: [TenTec] O2 keyer (score: 1)
Author: "Martin, AA6E" <martin.ewing@gmail.com>
Date: Thu, 12 Jan 2006 14:07:56 -0500
If the "keyer" is the same in O2 as O, there is no keyer hardware - it's entirely a software (firmware) process, except for some inscrutable Xilinx PLA logic. And that accounts for some artifacts - l
/archives//html/TenTec/2006-01/msg00461.html (9,728 bytes)

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