439.25Mhz Atv Downconverter Circuit

Posted on Jun 29, 2012

Most ATV (Amateur Television) transmitters transmit a DSB signal and commercial television stations use a VSB (Vestigial Sideband) signal. This fact is made use of in this converter to use the lower sideband. This results in less interference from repeaters that occupy the 440- to 445-MHz portion of the band.

439.25Mhz Atv Downconverter Circuit
Click here to download the full size of the above Circuit.

However, this approach might suffer from VHF image responses from channel 29, if that channel is active in your area.

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