Steve Kostecke wrote: > On 2009-04-30, Nathaniel Homier <n...@universal-mechanism.org> wrote: > >> I would like to know if one can use the line audio out of any old >> portable shortwave radio tuned to a time signal and fed via a line >> audio input. This would be motherboard audio. > > Yes, if your audio system works with the NTP Audio decoder drivers. > > For WWV/H see: > http://doc.ntp.org/4.2.4/drivers/driver36.html > or > http://www.eecis.udel.edu/~ntp/ntp_spool/html/drivers/driver36.html > > For CHU see: > http://doc.ntp.org/4.2.4/drivers/driver7.html > ior > http://www.eecis.udel.edu/~ntp/ntp_spool/html/drivers/driver7.html > >> The primary reason is that I get the impression that ntp radio clocks >> are for sale at very high prices. The most I have to spend is about >> $200. > > As has been mentioned elsewhere, the Garmin GPS-18x LVC is a very good > and inexpensive solution. The receiver is ~$70 (you do need to add a > connector). >
And a power supply! AIRC a 5 Volt DC supply is required. Power may be supplied by the computer or by a separate supply (wall wart). Some wall warts may offer a regulated 5 VDC while others will deliver 5 VDC into a particular load and a greater or lesser voltage to a smaller or a greater load. > For optimal performance you would need to install a serial port card in > your PC to use it. A USB serial port adapter would work but the time > signal stability will be degraded. > >> I already have very nice Sony 7600G HF portable and that gets the time >> freq. from 2.5 to 15 very well. > > Sounds like WWV ... the Type-36 driver is the one you need. > _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions