462 MHz UHF Narrow band FM (FRS) Receiver IC
Old FRS radios use a PLL synthesizer and single chip receiver the common chip used was NJM2592 made japan radio corp (link pasted below). You need a few support components like a phase shifter cap/LC and ceramic filter of the FRS bandwidth. It only needs an LC filter input and use the correct impedance conversion and you have a very cheap receiver. This is a design spin off the old motorola MC3357 &amp; MC3362 that was the staple of old two way radios.

http://www.njr.com/semicon/products/NJM2592.html

http://www.njr.com/semicon/PDF/NJM2592_E.pdf