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Old 30th Aug 2011, 11:15 am   #5
julie_m
Dekatron
 
Join Date: May 2008
Location: Derby, UK.
Posts: 7,735
Default Re: Easy UHF RF modulator

1980s-era home computers usually contained an Astec UM1286 modulator (capable of sound and vision) even if the speaker was on the motherboard. And some years ago, I obtained very cheaply from a surplus store a tunable modulator box which was meant for use with a home CCTV system (the modulators could be daisy-chained, allowing you to select one of several cameras as easily as changing channel). With the addition of a pair of plugs cut from an old audio lead and an old mobile phone charger as a power supply, it made a nice little self-contained unit.
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