Enforcement.. It would be nice.
-----Original Message----- From: time-nuts [mailto:[email protected]] On Behalf Of Alex Pummer Sent: Thursday, November 10, 2016 10:39 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Nutty time-nuttery with WWVB And how about that many, many "radiator" which are moving up and down with their carriers and don't give a damn about FCC Part 15 and radiating radiating day and night with substantial power, I meant that FFC approved and not approved switching mode power supplies, of which every household has a hand full of it? 73 KJ6UHN Alex On 11/10/2016 9:22 AM, William H. Fite wrote: > I heartily second Charles' admonition regarding FCC PART 15 unlicensed > transmissions. Part 15 explicitly states that an unlicensed operator > may not cause interference with any licensed transmission. Because of > the specific purpose of WWV/WWVB transmissions, any discernible > leakage detectable by any other user is prima facie evidence of > unlawful transmission and subject to a heavy fine. I assure you that > any licensed Part 97 user who detects your emissions over the top of > WWVB is quite likely to rat you out to Uncle Charlie. And should, may > I say, because you will be interfering with a public service. "I am > just syncing my clocks" is not going to impress the guys who appear in > your driveway in a white van with RDF antennas on the roof. > > So....be very damned sure that you are not radiating a discernible > signal outside of the immediate vicinity of your clocks. > > Bill > KJ4SLP > > > > On Thursday, November 10, 2016, Charles Steinmetz > <[email protected]> > wrote: > >> Peter wrote: >> >> Could I implement my own personal WWVB transmitter that would >>> be powerful enough to be picked up by the clocks in my house? >>> * * * >>> Has anyone tried this? >>> >> Some on the list have, and I'm sure they will provide the details. >> >> Others have mentioned the potential problems with interference to >> other WWVB users. For starters, make sure you study and understand >> Part 15 of the FCC rules before you put it on the air, or you could >> face a nasty enforcement action. (Even if you are Part 15-compliant, >> you may still screw up other users' reception and get a visit from >> the FCC when they complain. I operate several very sensitive 60kHz >> receivers -- if you live in my neighborhood, I'm almost certain to be >> unhappy about anything you >> deploy.) >> >> Note that the problem with most "atomic" clocks that I've seen is >> actually not insufficient signal (in the wee hours of the morning, >> when they try to synch). It is either excessive QRM, or orienting >> the clock so its antenna has a null toward Fort Collins. Make sure >> the antenna has a major lobe toward Fort Collins (this may require >> relocating the entire clock or bringing the antenna out so you can >> orient it independently), and that it is well clear of the AC mains >> distribution wiring in your house and any other sources of QRM (wall >> warts, CFL lamps, LED lamps, etc. (this may also require relocating the >> clock). >> >> The typical clock using a loopstick antenna has lobes to the front >> and rear, and nulls to the sides. Thus, mounting the clock on the >> western exterior wall (for users on the east coast) is usually best. >> Putting it directly in front of a west-facing window may help. >> >> Best regards, >> >> Charles >> >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] To unsubscribe, go to >> https://www.febo.com/cgi-bin/m ailman/listinfo/time-nuts and follow >> the instructions there. >> > _______________________________________________ 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. _______________________________________________ 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.
