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#1
11-01-2004, 12:08 AM
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TV transmitter Kits?
Well I hope this is ok to post here as I am not sure what other category on this web site it might go better in so here goes:
Has anyone built any TV transmitter kits? I've tried the TV transmitter kit from vectronics and it works ok but the signal strength is pretty poor... I practically have to have my tv's antenna sitting right next to the transmitter in order to get a static and interference free signal on my TV... and the Vectronics TV transmitter kit uses a loop antenna and I have heard that loop antennas are pretty poor for transmitting signals, they seem to work good for receiving but are no good for transmitting... in the mid 1990's in my high school electronics class I tried the Ramsey electronics TV transmitter kit and so did another classmate as well as the electronics teacher and none of us could ever get the thing to work at all... and the teacher was no slouch either as he had worked for many years as an electronics teacher at an electronics institute... though now it looks like Ramsey has changed the design of their TV transmitter kit I am kind of gun shy about possibly throwing away my money again if it should turn out as poorly as the first TV xmitter kit I tried from them... So does anyone possibly know of any better TV transmitter kits? I'd love to find a TV transmitter kit that is on par with the SStran broadcast band AM transmitter... That kit is incredable and if I could find a good quality TV transmitter kit I'd be willing to pay about the same price as the SStran kit for it... I would like to find a good kit as I hate to have my VCR sitting on top of my antique TV's when I want to watch leave it to beaver or I love lucy on them as a VCR on top of a 1954 TV just does not look right  any help would be greatly appreciated. thanks, Antonio MN, USA Last edited by huh1948; 11-01-2004 at 12:17 AM. 
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#2
11-01-2004, 12:37 AM
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I betcha one of the main problems with getting a TV transmitter with any kind of decent power is due to FCC regulations that prohibit any sort of real power lest you cause interference within your area.
Seeing as how you'd need to have your TV on whatever channel you're broadcasting on why not just use a VCR and hide it and the cable somewhere? Use a 75ohm to 300ohm adapter to connect the coaxial cable to the screw terminals on the TV. Cheap and easy, just like my dates! Anthony
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#3
11-01-2004, 12:38 AM
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Unless things have changed in the past 22 years ,unlicenced TV Xmitters are limited to 100mw. I was working for a company that dabbled in the things as temporary security units. I belive other companies sell them today as complete units.
We used short rubber whip antennas with decent results. These were B&W Xmitters and cctv cameras. Not much to go on but thats all I have. 
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- Outlaw Main: 9090DB, Snell Type EIII's, Marantz 6100, TEAC PD-D2500 LR: Motorola tubes, EL84 outputs, , Dual 1019 TT, Sony CDP-CE105, Wharfedale Sapphire SP-89's and a 15" GV center in an infinite baffle Home Office: Sansui 6060, Sony CDP-C305, Original Advents
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#4
11-01-2004, 07:59 AM
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Let's just say you lived in the middle of Montana, so interference is not an issue
 ... Couldn't you just build some kind of amplifier for your VCR and "broadcast" over channel 3?
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From Captain Video, 1/4/2007 "It seems that Italian people are very prone to preserve antique stuff."
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#5
11-01-2004, 08:14 AM
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Let's just say you lived in the middle of Montana, so interference is not an issue
... Couldn't you just build some kind of amplifier for your VCR and "broadcast" over channel 3?
__________________
From Captain Video, 1/4/2007 "It seems that Italian people are very prone to preserve antique stuff."
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#6
11-01-2004, 08:36 AM
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__________________
- Outlaw Main: 9090DB, Snell Type EIII's, Marantz 6100, TEAC PD-D2500 LR: Motorola tubes, EL84 outputs, , Dual 1019 TT, Sony CDP-CE105, Wharfedale Sapphire SP-89's and a 15" GV center in an infinite baffle Home Office: Sansui 6060, Sony CDP-C305, Original Advents
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#7
11-01-2004, 08:05 PM
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I have one of the new Ramsey kits. The thing is still terrible. It does transmit a good distance, but converting the audio and video from the VCR to RF frequency it terrible. The only channel I could get to work is channel 5. That's the only channel I could (barely) get A/V sync on the TVs. Very poor gain too. And only my B&W TVs would work with it. Forget about color and modern TVs.
What I am going to do is design and build my own TV transmitter one of these days. Try to build it as powerful as possible within FCC regulations.
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#8
11-01-2004, 08:20 PM
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I know illegal = bad, but
If you're in an area where other people picking up your signal is a slim chance, and you can brodcast on a channel that nobody will ever tune to (i have an old B&W set that can tune up to CH82 on UHF, don't know if that's possible today) could you not build a small amp? (Linear Amplifiers in the CB world, AKA "snowshoes", which are also illegal) that would step up the signal to max FCC ratings, or a smidgen above?
Is that even possible on TV Transmitters? If it can be done on a CB Radio, why not? I know nothing about this, and i've never tried anything of the sort, but this just brought up the idea. just my $0.02
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AgentWinchester Last edited by AgentWinchester; 11-01-2004 at 08:23 PM.
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