neazoi
Advanced Member level 6
the ta7673 is an obsolete TV RF modulator. I am not sute in that band it can operate. This https://www.datasheet4u.com/datasheet-pdf/ETC/TA7673/pdf.php?id=727866 shows a saw resonator, but is it uhf or vhf?
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VHF, but sometimes harmonics are used for UHF.
More information in the data sheet for the KA2981 which is Samsung's direct equivalent.
Brian.
The real question is what do you need it for? They are almost useless for broadcasting because of their 'dirty' output unless you employ substantial filtering. If you need a stable UHF carrier it would be more sensible to generate baseband audio/video and up-mix it it with a PLL stabilized LO. I do that for 23cm (1.24 GHz) ATV links and the circuitry is fairly simple.
Brian.