7-Mar-19 The EPROM images in this archive are for the Harris RF-350K HF Transceiver, aka the RT-1446 or URC-81, version 604m (the last and latest). To use them, you'll need a set of 27C128-class EPROMs. The files themselves are all in Absolute Binary (Data I/O #16) format. File checksums are as follows. u16-604m.bin: 0xDF4C U17-604m.bin: 0x5E4F U18-604m.bin: 0xFBB3 I'd like to thank the source for these files: Ken Fowler, KO6NO, of the East Bay Amateur Radio Club (ko6no.com). File checksum generation and repackaging by Bruce Lane, KC7GR.