Oops!.. I tought it was a GPS antenna...
For WWVB reception, you better wait at nighttime... I have here a Radio Shack "Atomic" radio controlled clock and during daytime, i have zero reception, but at night i'd say, 4 days out of 5, my clock syncs. I live in Montreal, Canada, so quite far away from Boulder, CO and my antenna is nailed on an inside wall in a bungalow. You probably live closer from WWVB than me, and your antenna looks like an outdoor unit. So good luck! 73 de Normand VE2UM Montreal, Qc. Canada --- Doug Millar <[EMAIL PROTECTED]> wrote: > > Hi Norman, > Thanks for you very complete check out > information. It > worked! The antenna is an active type with a > preamp. I also hooked > it up to a VLF receiver and found it receives very > well from near DC > to 100khz. No obvious peak at 60khz. > Thanks again, > Doug K6JEY > > > > At 03:08 PM 1/5/2007, Normand Martel wrote: > >You could do a simple test: > > > >With an ohmmeter, on Diode test and with reversed > >polarity (Red on shield, black on center pin), > measure > >the DC resistance on the RF connector. If it's a > short > >(< 1 ohm) DO NOT APPLY ANY VOLTAGE ON IT! Your > antenna > >is passive and conducting. > > > >If the ohmmeter indicates a diode reading (about > 0.7V) > >the antenna is active and some bias will be > required > >to have the antenna work. > > > >If the reading is infinite, it is either a passive > >(open) or active antenna. > > > >To further determine the type of antenna, i suggest > >you to use some length of coax (20-50ft) cable to > put > >the antenna away from you, and, using a regulated 5 > >volts power supply with a 1000 ohms SERIES > resistor, > >apply power (forward polarity, e.g. positive on > center > >pin) to the antenna and measure the voltage across > the > >1000 ohm resistor. > > > >If you have some voltage across the resistor, this > >indicates that the antenna preamplifier draws some > >current and, obviously, the antenna is active. If > no > >voltage is present across the 1000 ohms resistor, > >your antenna is passive. > > > >Why the 20-50 foot coax? Simply to put some > isolation > >between you and the antenna. If the preamplifier is > >turned on by the 1000 ohms bias and the antenna is > too > >close from you, the whole thing will start to > >oscillate. > > > >73 de Normand VE2UM > > > >--- Doug Millar <[EMAIL PROTECTED]> wrote: > > > > > > > > Hello, > > > Hope the New Year is going well. I > recently got the > > > above antenna to > > > use on another receiver, but no data. Does > anyone > > > have a description > > > of the interface? Is it just a simple ferrite > > > antenna, or does it > > > have a preamp and need bias, or "other" ? Any > info > > > would be very helpful. > > > Thanks, > > > Doug K6JEY > > > > > > > > > _______________________________________________ > > > time-nuts mailing list > > > time-nuts@febo.com > > > > >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > > > > > > > >__________________________________________________ > >Do You Yahoo!? > >Tired of spam? Yahoo! Mail has the best spam > protection around > >http://mail.yahoo.com > > > >_______________________________________________ > >time-nuts mailing list > >time-nuts@febo.com > >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > > _______________________________________________ > time-nuts mailing list > time-nuts@febo.com > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts