Hi David, I am not sure where you are at, but your mail server appears to be on the East Coast of the US. I seriously doubt that it is your "in house" 10 MHz that is traveling 3 blocks. If it is then there are some serious issues to contend with. The first being, if you are in the US, that you are exceeding the FCC limits for unintentional radiators as defined under Part 15 of the FCC rules. For what would be considered a more or less sealed system (i.e., your equipment/cables), it is NOT normal to hear "the" signal beyond the first neighbor in any direction from the equipment location.
Are you sure your "old Radio Shack" receiver is working properly ? I can still copy 10 MHz WWV mixed in with the local house standards at my location in the San Diego, California area. Of course I am using much higher quality receiver designed for the Amateur radio market. First I would turn everything off and then see what you hear. Then i would turn on & off each individual item and see how much (if any) contribution the item makes to noise floor in the receiver. After that I would turn on, in succession, the most important to the least significant and see who might be generating the strong signal. Something in that process should give you a clue as to which item may have a serious problem. In the end, if you have a real need to receive WWV on the HF frequencies, I would consider a much better receiver and, of course, an outside antenna. If I may suggest, the is a software defined receiver that appears to be of quality design covering from 500 Hz to 30 MHz for $499.99 that may interest you. Go to http://www.rfspace.com and look at the SDR-IQ model. I talked to someone who has one to test and he thought quite highly of it. It is of a very interesting design and includes software to run it. It plugs into the computer via a USB cable and is powered from that USB cable. The software includes bandwidth settings, a FFT spectrum and a waterfall type display as well. In addition, it handles CW, AM, LSB, USB, wide and narrow FM and perhaps other modes. Don't forget that WWV also transmits on 2.5, 5 and 15 MHz. 15 MHz is good during mid day and 5 MHz is quite good at night time. 2.5 MHz is only good at night and a little tough to copy unless you have a good antenna or are living quite close to it. Bill....WB6BNQ David Welch wrote: > I was wondering with so many 10 mhz sources running.or even a single cesium > and gps receiver running, as I have now..and the 10 mhz is also routed to a > clock driver system (leitch).I cannot receive 10mhz wwv broadcasts at all > anytime,I am using a old radio shack sw radio on batt power..I tried even > almost 3 blocks away and all I get is my 10 mhz carrier..so even a rooftop > ant will not work ..I must have a lot of leakage somewhere to travel for the > signal to peg the radios meter blocks away.. > > ----- Original Message ----- > From: "Matt Ettus" <[EMAIL PROTECTED]> > To: "Tom Van Baak" <[EMAIL PROTECTED]>; "Discussion of precise time and > frequency measurement" <time-nuts@febo.com> > Sent: Wednesday, February 13, 2008 3:17 AM > Subject: Re: [time-nuts] GPS Locked and Unlocked Performance Comparison > > > On Feb 13, 2008 1:03 AM, Tom Van Baak <[EMAIL PROTECTED]> wrote: > > > To prevent, or at least detect, this effect I allow my 10 MHz > > > house reference to drift off-frequency by quite a bit (last > > > month it was 1.7e-12 off). That way there are no on-time > > > or on-frequency sources near the test setup. > > > > Tom, > > > > I think you might be the only person in the world who would consider > > 1.7 parts per trillion to be "quite a bit off" :) > > > > Matt > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.