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1. [TenTec] FSK (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Mon, 8 Jun 1998 11:15:32 -0400; To me, a 170 kHz or 200 kHz shift seems excessively wide. By three orders of magnitude. Most RTTY and Packet uses 170 Hz and 200 Hz shifts. Indeed, shifts larger than 1 kHz are prohibited by the FCC; /archives//html/TenTec/1998-06/msg00110.html (7,433 bytes)
2. [TenTec] dual VFOs in OmniVII (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Tue, 9 Dec 97 14:33:40 -0500; Actually, what you describe is not typically done. What usually happens is an operator will use a computer program or voice keyer to transmit a CQ on one rig, while tuning for stations on the other r; /archives//html/TenTec/1997-12/msg00099.html (9,055 bytes)
3. [TenTec] R-7000 Vertical Experience (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Tue, 21 Oct 97 12:30:42 -0400; Yes, I've had one for about a year. Hmm. I wouldn't recommend trying to hike out in the boonies with one. It is fairly bulky. If you could pull it off a truck and put it up, that would be OK. Also, a; /archives//html/TenTec/1997-10/msg00195.html (9,018 bytes)
4. [TenTec] Interfacing David Clark Headset mic to Omni 6 (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Wed, 17 Sep 97 10:30:19 -0400; The problem with all aviation headset is *NOT* that they are amplified. Aviation headsets used to be all carbon microphones, which require a bias current in order to work. All subsequent headsets are; /archives//html/TenTec/1997-09/msg00095.html (7,926 bytes)
5. [TenTec] Re: Request for comments about 238 tuner (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Mon, 22 Sep 97 14:38:57 -0400; No, it uses a T network. This is a very common circuit. (I think the SPC uses the same) One capacitor from the input to the inductor, another cap from the inductor to the antenna. The other leg of th; /archives//html/TenTec/1997-09/msg00135.html (11,876 bytes)
6. [TenTec] Re: Request for comments about 238 tuner (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Tue, 23 Sep 97 08:13:32 -0400; the Mea cupla -- you're correct. T-match and Ultimate match (and I assume the SPC) circuits do tune in a similar fashion. Bill Coleman, AA4LR, PP-ASEL Mail: aa4lr@radio.org Quote: "Not in a thousand; /archives//html/TenTec/1997-09/msg00142.html (8,858 bytes)
7. [TenTec] Transmatches/Tuners/Etc. -Reply (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Tue, 23 Sep 97 10:08:27 -0400; Open wire or ladder line have very SMALL losses compared to coax. Twinlead (a type of double wire line with insulation between the wires along its entire length) has greater losses than open wire or; /archives//html/TenTec/1997-09/msg00145.html (9,427 bytes)
8. [TenTec] "Tuning" antennas; baluns (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Tue, 23 Sep 97 11:44:11 -0400; Not quite. In my book, a transmatch produces a "matched" or resonant condition on the antenna "system" -- which includes the transmission line. The resulting conjugate match is just as resonant as an; /archives//html/TenTec/1997-09/msg00149.html (10,660 bytes)
9. [TenTec] "Tuning" antennas; baluns (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Tue, 23 Sep 97 11:48:02 -0400; Proximity to the ground (and other objects) affects the electrical characteristics of the antenna, hence changing its resonance. long wire, You are correct. Such a condition is known as a conjugate m; /archives//html/TenTec/1997-09/msg00150.html (9,216 bytes)
10. [TenTec] Resonance and more (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Tue, 23 Sep 97 16:02:52 -0400; Sounds good to me. resonance. OK. Now, what if you took those elements and squeezed them back through the transmission line until you got to a box just before the transmitter. Voila! An antenna tuner; /archives//html/TenTec/1997-09/msg00165.html (14,434 bytes)
11. [TenTec] "Tuning" antennas; baluns (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Tue, 23 Sep 97 22:14:37 -0400; (within It if transforms the impedance to something that is 50 ohms or so, then it WILL be resonant. The problem with a tuner-fed screen door, gutter or long wire (hey a long wire might not be bad) h; /archives//html/TenTec/1997-09/msg00178.html (12,302 bytes)
12. [TenTec] "Tuning" antennas; baluns (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Tue, 23 Sep 97 22:59:01 -0400; still just Got an ARRL Handbook? (No ham should be without one) Mine is the 1991 ARRL Handbook, page 16-11. The section titled "The Conjugate Match and the Z(0) Match" I'll quote a bit: "If a generat; /archives//html/TenTec/1997-09/msg00180.html (18,718 bytes)
13. [TenTec] RE: 301 construction (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Fri, 26 Sep 97 17:12:13 -0400; "A man convinced against his will, is of the same opinion, still." -- proverb No matter what you call it, it still creates a conjugate match, which resonates the antenna system. Bill Coleman, AA4LR,; /archives//html/TenTec/1997-09/msg00210.html (7,321 bytes)
14. [TenTec] My last words on tuners/antennas- (maybe?) (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Mon, 29 Sep 97 17:03:09 -0400; Well, this might be my last posting, if people would stop confusing resonance with efficiency. It is an easy mistake to make, since the hobby is full of myths about it. See, you're confusing the issu; /archives//html/TenTec/1997-09/msg00235.html (13,013 bytes)
15. [TenTec] Computereceivers (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Wed, 30 Jul 97 11:07:47 -0400; Yeah, and what about us folks who use Macs. Bill Coleman, AA4LR, PP-ASEL Mail: aa4lr@radio.org Quote: "Not in a thousand years will man ever fly!" -- Wilbur Wright, 1901 -- FAQ on WWW: http://www.con; /archives//html/TenTec/1997-07/msg00205.html (7,869 bytes)
16. [TenTec] Computereceivers (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Wed, 30 Jul 97 11:35:14 -0400; You know, I was going to write something humourously caustic about this comment, but instead I'll just gently point out that the Intel PC world has struggled mightily to emulate the Macintosh since 1; /archives//html/TenTec/1997-07/msg00207.html (8,014 bytes)
17. solid state kit (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Fri, 3 Jan 97 12:59:47 -0500; Who says you have to use 13.8 volts? Why not 24, 28 or 50 volts? (Provided the high-power transistors can handle it) As for transformers -- can you say switching power supplies? That solves part of; /archives//html/TenTec/1997-01/msg00017.html (7,732 bytes)
18. HF amp kit (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Wed, 4 Dec 96 16:33:20 -0500; Sounds reasonable. How about an HF linear amplifier kit that uses safe, low-voltage solid-state components? After all, Ten-Tec got much of its start producing early solid-state devices, no? Bill Col; /archives//html/TenTec/1996-12/msg00042.html (7,442 bytes)
19. HF Amp (score: 1): Author: aa4lr@radio.org (Bill Coleman AA4LR); Date: Thu, 5 Dec 96 10:56:21 -0500; AH, you mis-interpret. Lawsuits of this nature don't usually come from the victom of injury, but rather their family. If someone accidentally electrocutes himself on an amplifier HV line, his FAMILY; /archives//html/TenTec/1996-12/msg00051.html (7,608 bytes)

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