[HomeBrew] A method for wireless CATV
N2EY at aol.com
N2EY at aol.com
Mon Aug 2 07:06:53 EDT 2004
In a message dated 8/1/04 10:42:02 PM Eastern Daylight Time,
serndipity at hotmail.com writes:
> Wanting to watch CATV on the screened in back porch (where running a cable
> extension line would have been very difficult)...I connected the cable box
> output to a 3 stage class A amplifier chain (e.g. 2N5179 / 2N5179 / 2N5109
> I built w/ muliiple feedback at about 25 dB gain per stage) and the output
> to a channel 3 (i.e. 62MHz) dipole. Then w/ a TV set on the porch tuned to
> channel 3...I was able to receive wireless CATV.
By 'broadcasting' channel 3...
>
> Not knowing the output level from the cable box.....I was lucky and obtained
>
> about a 100' wireless range.
The cable folks may not be really happy with that. They go to great lengths
to keep the signal from leaking out - FCC requires it.
What you essentially have is an unlicensed channel 3 transmitter...
>
> Looking for any additional ideas on how I might refine this idea further.
> For example, on further thought....I assume that the cable box output is FM
>
It's not FM. It's a plain NTSC TV signal. Your TV could not decode an FM
video signal.
73 de Jim, N2EY
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