| Time and Callsign Reference |
| Current Times |
| National Institute of Standards and Time |
| Synchronize your PC with NIST's clock |
| Time Services Department(US Naval Observatory) |
| Time from the US Naval Observatory Master Clock |
| CallBooks |
| International CallSign Prefix Allocations |
| Special Prefixes and Call Signs for Canadian Operators |
| Back to SPARC Homepage |
| If you know of a link not listed here that would be of interest to amateur radio operators, please let us know. Send a note to SPARC. |