[EMAIL PROTECTED] wrote: >> I've already breadboarded a "time hack unit" which marries a WWV receiver to >> a tone decoder. At the beginning of each hour, WWV broadcasts 800 ms of a >> 1500 Hz tone. I have a simple tone detector set to key the repeater when it > > I once tried to pick up the 10 MHz WWV signal from one of my sites. No way > - far too much processor noise in the building.
Not us, but another local group built a little setup that gathers up time from WWV (could be GPS nowadays) and via a vertical antenna and a modest radio at one of the tech's houses, they adjust their clocks on their controllers regularly via their control receiver frequency by simply poking a button on the device, or setting it in an automatic weekly mode. It's a microcontroller, a mobile radio, an antenna, a DTMF encoder chip (cleaner than an R2R ladder and sine-waves made from from logic pins), and a WWV receiver. Can CW ID with a DTMF tone at end of transmission, although knowing the designer he probably put a nice sine-wave CW ID in it. Fairly simple lashup. Needed someone familiar with slapping some code in a micro is about all, and that's easily done these days with both pay and free BASIC compilers for these little chips. It even had code in the micro to deal with daylight savings time, and they were joking that it's been so long since they did any changes to it, our changes to daylight savings time's start and stop dates next year will mean it needs work done on it. Nate WY0X
