500GHz? You must mean 50GHz. Because 1Hz at 500GHz is 2E-12. (You're already there at your goal.) And what frequency counter are you using at half a THz? :- )
(My highest freq 2-way ham contact has been on 403GHz and that took me years to make.) -Brian, WA1ZMS/4 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Bob Albert Sent: Friday, February 21, 2014 1:41 PM To: Chris Albertson; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] New WWVB modulation format receivers (NOT) Well if we are talking about $50 then you have my attention. No I am not afraid to use a soldering iron. Amateur radio is not my main interest here. I have the same compulsion many of you out there seem to have, that if I can get more accuracy I want it. I get that content smile on my face when my counter reads a string of zeroes on a measurement that is supposed to do just that. I am doing a lot better than 1 ppm right now. I have my counter and signal generator agreeing within about 1 Hz at over 500 GHz. When I get one beat in 10 seconds against 20 MHz WWV I have 5 ppb I think. I am close to that but it gets sticky using 20 MHz to communicate, plus the signal is only available in my location for a few hours on most days. I am doing similar things with voltage but you can't communicate voltage over the radio so I don't have that kind of agreement, more like 50 ppm. It's all in fun; I have no legitimate need for this accuracy. Bob _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
