[time-nuts] Nutty time-nuttery with WWVB

[William H. Fite]

It sure would. FCC has just given up on 11M. Guys in Florida with
generators and radios in their pick-em-up trucks driving on the beach and
emitting 2KW.

On Thu, Nov 10, 2016 at 12:51 PM, Van Horn, David <
david.vanhorn at backcountryaccess.com> wrote:

>
> Enforcement.. It would be nice.
>
>
> -----Original Message-----
> From: time-nuts [mailto:time-nuts-bounces at febo.com] 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
> > <csteinmetz at yandex.com>
> > 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
> >>
> >>
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> >>
> >
>
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-- 
Intelligence has never been proof against stupidity.