The Sony Mod Kit for DWR-S01D/1820 Digital Wireless Receiver converts the receiver's frequency designation from the original channels 18/20 494 to 518MHz (UHF-TV channels 18, 19, 20 and 21), to channels 22/24 518 to 542MHz (UHF-TV channels 22,23,24 and 25).
Note:
Requires installation from Sony
Mod kit includes filter module and frequency label to reconfigure DWR-S01D/1820 digital wireless receiver's operating frequencies