[time-nuts] WWV / WWVH / WWVB
Brad Stockdale
brad at shinji.net
Thu Nov 20 20:37:50 UTC 2008
Oh my... The HP 3586 looks like a gorgeous piece of equipment. It'd
look very impressive in my (hopefully) growing rack of time/frequency gear...
I just checked on eBay right now and didn't see any available right
this second, but I will put in a saved search for them so I can get
email alerts...
Do you know of any good (reasonably priced) used equipment dealers
that I should also be looking at for HP test equipment? I know
there's shops that specialize in used test gear, but I just don't
know their addresses... I'll google around right now and see what I
can come up with, but if anyone has any suggestions that they have
delt with before and been satisfied, I'd like to hear.
Thanks for the great idea! I hope I can track one of these down
sooner or later.
Regards,
Brad
At 01:55 PM 11/20/2008, you wrote:
>Brad Stockdale wrote:
>[ ... ]
> > Anyway, on to the reason for this post... I'd like to get some
> > receivers so I can HEAR and USE the WWVB, WWV, and WWVH signals... I
> > know that HEARING them may not be a 'normal' request, but I just
> > would like to monitor the audio as well as being able to decode
> the signals...
>broadcast ranges.
>
>[ ... ]
> > Can anyone suggest a kit, or project listed online with
> > schematics and parts lists, or I guess even reasonably priced
> commercial units?
> >
> > If I can't get radios that have built in decoders for these
> > stations, I'd be happy just receiving their audio and then trying to
> > build my own decoder using a PIC or something...
>
>If you don't mind a big, heavy box, the HP 3586[A,B,C] selective
>voltmeters are absolutely wonderful tools for any sort of LF/HF
>measurement. They tune from 20 Hz to 32 MHz and have narrow 20 and 400
>Hz filter bandwidths, as well as a voice-bandwidth filter (the width
>depends on the model and option). They read amplitude to 0.01 dB and
>can count a received carrier to 0.1 Hz frequency resolution.
>
>They have a speaker and line-level audio output, but no decoder. They
>also have a GPIB connector, so you can use a computer to tune and read
>frequency and amplitude.
>
>The "C" model is the best for lab use, because it has 50/75/600 ohm
>input options, and uses standard BNC and binding post input connectors.
> The A and B models were designed for telco use and have slightly weird
>input impedances and connectors, but nothing to stop them from still
>being very useful.
>
>They sometimes go on eBay for <$200, which is a steal in my book. They
>weigh about 50 pounds, though, so aren't exactly portable.
>
>John
>
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