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#1
06-29-2008, 04:41 PM
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Home NTSC Transmitter
I know this subject has been brought up before, but for some reason I can't find it in while searching the site. Does anyone know if anyone makes low power NTSC transmitters for home use? All I want to do is to transmit from upstairs to downstairs on an unused normal TV channel at very low power.
David 
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#2
06-29-2008, 07:48 PM
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This adequately does room-to-room UHF:
http://www.audiokarma.org/forums/sho...08#post1925308 The apartment amp discussed a few posts later could be made to do VHF. This had limited success, your mileage may vary: http://www.audiokarma.org/forums/sho...ghlight=Ramsey
__________________
 Do not attempt to adjust your set.
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#3
06-29-2008, 07:54 PM
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Easier to build than that (and without any FCC worries) would be a device that converts ATSC to NTSC and can re-transmit them via 75ohm cable.
All of my sets are hard-wired to my outdoor antenna. The antenna comes into the basement and then gets split to about 5 different locations. It would be nice to simply add a converter which would constantly be putting out about the 15-or-so ATSC signals we have, plus the worthwhile digital side channels on unused dial space. (Currently, that's just RTN, lol) I even drew this diagram for an electronically inclined friend at work and told him to build it for me! 
__________________
From Captain Video, 1/4/2007 "It seems that Italian people are very prone to preserve antique stuff."
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#4
06-29-2008, 08:03 PM
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Aw hell, for 40 bucks, you too can build your own: http://www.ramseyelectronics.com/cgi...ction&key=TV6C Cheers,
__________________
Brian USN RET 22YRS (Avionics/Cal) CET-Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit!
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#5
06-30-2008, 12:25 AM
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Another Ramsey
Ramsey also shows this little...very little...module. It is capable of RF to cable channel 59 with audio/video.
http://www.ramseyelectronics.com/cgi...tion&key=C2000 A grand 20mw. They have a higher power 100mw unit...video only. Would this transmit to an antenna and then to a cable ready VHS (which I save for the tuner) in the cable mode? I would feed it with a dedicated converter box. I have visions of it in front of a tabletop bowtie or loop feeding everything. And is the cable channel 59 a ham frequency with black helicopters circling above me looking for my pirate station? Dave A
__________________
“Once you eliminate the impossible...whatever remains, no matter how improbable, must be the truth." Sherlock Holmes.
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#6
06-30-2008, 08:30 PM
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#7
06-30-2008, 08:40 PM
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Oh it worked... for all of 7 feet... Could only get a clear picture by setting it right next to the antenna, and it didn't go to Channel 6, or even Channel 5...
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#9
06-30-2008, 10:48 PM
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#11
06-30-2008, 11:15 PM
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is an amplifier designed as a booster for FM 2-way radios. I don't believe that such a product is commercially available, in view of the facts that it could officially be used only by a TV broadcaster. The need for linearity arises from the AM nature of the video signal (actually VSB, but still needing amplitude linearity). P. S.: A cable TV booster could be the thing, but I don't know the power output level of such a beast. Other ideas? Last edited by electroking; 06-30-2008 at 11:16 PM. Reason: added P. S.
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#13
07-01-2008, 02:55 AM
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There is a kit company that already sells exactly what you have described, in the right half of your "converter" block: http://www.northcountryradio.com/Kitpages/vmstr.htm I have built one or two of their amateur-TV kits, and had no trouble making it work properly as described.
__________________
Chris Quote from another forum: "(Antique TV collecting) always seemed to me to be a fringe hobby that only weirdos did."
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Linear Mode
