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1. Radio communication (score: 1): Author: Bryan Savage <basavage@earthlink.net>; Date: Wed, 12 Feb 2003 07:18:11 -0800; Radio communication, including telemetry, from the car doesn't work well based on what I've seen / heard. I don't know why, maybe someone on the list knows. Bryan (I have a weak theory) cameras? ///; /html/land-speed/2003-02/msg00184.html (7,920 bytes)
2. RE: Radio communication (score: 1): Author: "Albaugh, Neil" <albaugh_neil@ti.com>; Date: Wed, 12 Feb 2003 10:09:04 -0600; Those X-10 cameras are intended for only about 100ft transmission so they aren't suitable for remote video transmission. It is possible to do voice, video or data telemetry over any distance that's; /html/land-speed/2003-02/msg00186.html (8,892 bytes)
3. Re: Radio communication (score: 1): Author: W S Potter <wester6935@attbi.com>; Date: Fri, 14 Feb 2003 07:53:42 -0700; I'm late getting in on this thread ... my computer just visited the doctor for a physical. General Motors brought some very sophisticated telemetry with the pickup truck they ran on the salt. There w; /html/land-speed/2003-02/msg00219.html (10,188 bytes)
4. RE: Radio communication (score: 1): Author: Ralph Forsythe <rf-list@centerone.com>; Date: Thu, 13 Feb 2003 11:11:49 -0700 (MST); Neil, I had a moment of inspiration on this and think I have a possible solution... Ham Radio. It's very easy to transmit slow-scan video and packet data (i.e., da-da-da, telemetry) bidirectionally u; /html/land-speed/2003-02/msg00225.html (9,672 bytes)
5. Re: Radio communication (score: 1): Author: Bryan Savage <basavage@earthlink.net>; Date: Fri, 14 Feb 2003 12:00:57 -0800; That sounds very interesting Ralph. RF communication with a car seems to work fine up to about 140-180 MPH when the S/N ratio appears to drop towards 1. I have no idea what the xmit power input was i; /html/land-speed/2003-02/msg00226.html (10,328 bytes)
6. Re: Radio communication (score: 1): Author: Ralph Forsythe <rf-list@centerone.com>; Date: Fri, 14 Feb 2003 15:56:44 -0700 (MST); Yeah, I'm thinking legally blast enough RF to get it through. I don't know why speed would affect the signal strength since that is more based on distance and environmental characteristics. I'm not f; /html/land-speed/2003-02/msg00233.html (9,339 bytes)
7. RE: Radio communication (score: 1): Author: "Albaugh, Neil" <albaugh_neil@ti.com>; Date: Fri, 14 Feb 2003 16:45:12 -0600; It sounds like that would work if you transmitted the data as FSK, etc. I'd guess that in that band(s) only a Technician class license would be necessary. Regards, Neil ex-N7BBN, W8TKF, DL4CU, AE1CU; /html/land-speed/2003-02/msg00234.html (10,239 bytes)
8. Re: Radio communication (score: 1): Author: Bryan Savage <basavage@earthlink.net>; Date: Fri, 14 Feb 2003 15:52:43 -0800; Ralph, I wonder if the metal car, supported by insulators, develops a charge when the round insulators are spinning 2,000 - 3,000 RPM inside a partially confined space? I sure don't know what's going; /html/land-speed/2003-02/msg00236.html (10,140 bytes)
9. Re: Radio communication (score: 1): Author: Ralph Forsythe <rf-list@centerone.com>; Date: Fri, 14 Feb 2003 18:04:30 -0700; Potentially, I suppose, sure. :) Actually a metal car will definitely build up a charge at those speeds, that's why aircraft have wires about 3-4" in length hanging from the trailing edge of the wing; /html/land-speed/2003-02/msg00238.html (9,423 bytes)
10. RE: Radio communication (score: 1): Author: "Albaugh, Neil" <albaugh_neil@ti.com>; Date: Fri, 14 Feb 2003 16:50:07 -0600; Bryan; Hmmmm....maybe the airflow was pushing the short whip antenna down flat? Otherwise, I can't see any good reason that it should be speed-dependent. It sure ain't Doppler shift at 180MPH! Regar; /html/land-speed/2003-02/msg00260.html (8,188 bytes)
11. RE: Radio communication (score: 1): Author: "Jon Wennerberg" <jonw@up.net>; Date: Tue, 18 Feb 2003 08:56:44 -0500; Why not just use a horizontal antenna? Can't get pushed out of vertical if it's horiz. to start. As long as the receive and xmit antennas are the same the radio waves won't care. Jon --Original Messa; /html/land-speed/2003-02/msg00290.html (8,323 bytes)
12. RE: Radio communication (score: 1): Author: "Albaugh, Neil" <albaugh_neil@ti.com>; Date: Tue, 18 Feb 2003 09:59:53 -0600; Lots of different types of antennas have been developed for high speed aircraft and missiles but many wouldn't be very suitable for our application. The short "blade" or "scimitar" antenna is aerody; /html/land-speed/2003-02/msg00294.html (8,888 bytes)
13. RE: Radio communication (score: 1): Author: "Jon Wennerberg" <jonw@up.net>; Date: Tue, 18 Feb 2003 08:38:10 -0500; We've been gone to the Dealer Motorcycle show in Indy for a coupla days -- just chewing my way through the 92 or so emails on the list. I read 'em from oldest to newest, so maybe this'll be old by th; /html/land-speed/2003-02/msg00308.html (10,340 bytes)

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