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101. [TenTec] Enhanced SSB (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Sat Apr 19 14:41:32 2003; Not at all hard to answer, just hard to answer without buckets of sarcasm. The main reason I see is to transmit the "golden" basso profundo radio announcer tones at great expense in transmitter power; /archives//html/TenTec/2003-04/msg00528.html (10,669 bytes)
102. [TenTec] Slightly OT: SSB vs AM (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Tue Apr 22 13:42:06 2003; The carrier and other sideband of AM make for simple detection. E.g. the crystal set, just a diode. The carrier does nothing but bias the diode detector, the other sideband is just the result of the; /archives//html/TenTec/2003-04/msg00598.html (10,493 bytes)
103. [TenTec] Slightly OT: SSB vs AM (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Tue Apr 22 15:27:13 2003; Generally the divide by 10 circuit looses amplitude information. And the spectral compression depends on considering that the SSB signal can be approximated by sampling the instantaneous frequency ev; /archives//html/TenTec/2003-04/msg00600.html (10,998 bytes)
104. [TenTec] My second Ten Tec is a Triton IV. (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Thu Apr 24 17:13:55 2003; Needs some RF filtering else it will trigger on the least amount of RF in the shack. And needs some resistor from SCR gate to ground to accommodate the rounded knee of the standard zener. Often the z; /archives//html/TenTec/2003-04/msg00657.html (9,037 bytes)
105. [TenTec] DSP reports--suggestion/request (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Tue Apr 29 15:53:58 2003; I use my Timewave 599+ with my Corsair II. Its an enhancement even on SSB sometimes. As for AGC, its AGC will overcome AGC pumping in the radio at the cost of bringing up the background noise between; /archives//html/TenTec/2003-04/msg00795.html (8,779 bytes)
106. [TenTec] DSP reports--suggestion/request (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Tue Apr 29 22:28:50 2003; There WILL be distortion of the voice when the signal reaches the DSP with noise a little stronger than the signal. The DSP can't recreate voice components that were under the noise at the D/A conver; /archives//html/TenTec/2003-04/msg00814.html (10,394 bytes)
107. [TenTec] Re: Question about Jupiter/Argonaut v. 746 Pro (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Tue Apr 29 22:28:59 2003; I used an Icom 746 at FD last year. I didn't appreciate a couple of its features. With other stations close by (tens of feet) there was often a low frequency rumble in the headphones as if a train wa; /archives//html/TenTec/2003-04/msg00815.html (8,691 bytes)
108. [TenTec] DSP reports--suggestion/request (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Wed Apr 30 11:27:14 2003; I might be favorably impressed with the Orion's performance, but for VHF/UHF and up, it wouldn't be the limiting factor. So I think money is better spent on antenna arrays and signal frequency amplif; /archives//html/TenTec/2003-04/msg00835.html (9,058 bytes)
109. [TenTec] DSP units (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Wed Apr 30 11:27:35 2003; There have been several editions of the Timewave software. The latest one is distinctly better than the earlier versions in noise reduction and AGC. I find that sometimes the noise reduction and impr; /archives//html/TenTec/2003-04/msg00836.html (8,137 bytes)
110. [TenTec] Group replies vs. personal e-mail (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Wed Mar 5 17:31:59 2003; Before January 27 or 28, the list didn't have the "REPLY-TO" entry. It was down due to server glitches for about three days and came back with REPLY-TO enabled. The list monitor has chosen to not cha; /archives//html/TenTec/2003-03/msg00184.html (9,278 bytes)
111. [TenTec] Century 21 Sticky Controls (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Sun Mar 9 21:55:09 2003; A drop of Labelle #108, lubricant for plastic model trains, usually fixes up any stick plastic switches for me, including keyboards. It should be in your nearest hobby shop. 73, Jerry, K0CQ -- Entire; /archives//html/TenTec/2003-03/msg00381.html (7,753 bytes)
112. [TenTec] Corsair DC connector (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Sun Mar 9 21:55:15 2003; The Tentec 4 pin connector is a Molex MateNLock. Under a couple bucks from Mouser (www.mouser.com), pins and cord anchor separate. There are a couple variations; either will work. I have the part num; /archives//html/TenTec/2003-03/msg00382.html (6,906 bytes)
113. [TenTec] More IP3 Stuff (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Tue Mar 11 00:32:27 2003; To the contrary: 1) Measuring IP3 is a good indication of how a receiver handles strong interfering adjacent frequency signals. Checking at a variety of spacings can show up more receiver design faul; /archives//html/TenTec/2003-03/msg00468.html (8,592 bytes)
114. [TenTec] Airpax breaker (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Wed Mar 12 00:31:55 2003; I use a 16 amp large blade size automotive fuse to protect my Corsair II. So far I've blown two or three, no PA transistors. I built a relay into my power cord for reverse polarity protection and for; /archives//html/TenTec/2003-03/msg00496.html (8,185 bytes)
115. [TenTec] AGC thump (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Wed Mar 12 11:52:59 2003; The Corsair AGC is created at audio and I think after the notch and bandpass filters. Those plus the many poles of cascaded crystal filter add up to a great amount of delay. So by the time the AGC vo; /archives//html/TenTec/2003-03/msg00504.html (7,556 bytes)
116. [TenTec] Astatic D104 mic and Pegasus (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Wed Mar 12 15:47:57 2003; The crystal D-104 needs a very high (> half meg) input resistance else it gives a weird frequency response. That's accomplished by the preamp. If the preamp has too much output, then a step down tran; /archives//html/TenTec/2003-03/msg00512.html (7,813 bytes)
117. [TenTec] Scout headphones (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Fri Mar 14 20:17:29 2003; When there's too much audio in headphones, try a resistor in series with the phones. Say 10 times the impedance rating of the headphones as a start. If that's still too loud go higher by another fact; /archives//html/TenTec/2003-03/msg00577.html (7,487 bytes)
118. [TenTec] Equinox Day (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Sat Mar 15 18:23:43 2003; I've done several sunrise/sunset programs. Refraction is a significant factor and a source of significant uncertainty. The best of the astronomical computation references that I've found says that co; /archives//html/TenTec/2003-03/msg00620.html (9,690 bytes)
119. [TenTec] Equinox Day (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Sun Mar 16 11:17:41 2003; I think my software is looking at the upper limb appearing at sunset and disappearing at sunset. I tested mostly sunset, since sunrise is when I sleep best. Still the greatest uncertainty is from the; /archives//html/TenTec/2003-03/msg00648.html (8,244 bytes)
120. [TenTec] Omni VI & Titan tuning repeatability (score: 1): Author: geraldj@isunet.net (Dr. Gerald N. Johnson, electrical engineer); Date: Sun Mar 16 20:33:12 2003; The plate blocking capacitors should be the least effect at 160 meters because the tube plate C is far less than the tuning C. At 10 meters the tube plate C is a large fraction of the circuit tuning; /archives//html/TenTec/2003-03/msg00668.html (8,984 bytes)

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