[time-nuts] Ultralink WWVB receiver manuals?

[John Ackermann N8UR]

Thanks to another list memo, I got the basic manual.  Got it fired up 
and while it does things, I think there's a problem.  The S Meter is 
pinned all the way over to the right (very, very strong signal) and 
stays there no matter how I shield the antenna.  And I never see any 
decoded bits.  I hope the receiver chip (U4226B, unobtanium except from 
China) isn't shot.  Will do more testing when I get some cycles free.

It would be very nice to have a direct NIST time source in the lab 
again, complete with PPS output.

Thanks!
John
----

On 03/29/2018 05:55 PM, Tom Van Baak wrote:
> Congrats on your acquisition. The Ultralink WWVB receivers are very nice. It should still work -- it's an AM subcode (not carrier phase) receiver. If you have more questions let me know. These modules were the darling of precise time at the turn of the century; before mobile phones, before GPS was affordable. Ultralink discontinued the product line within a few years when the market for WWVB-based timing dried up.
> 
> Manuals here: http://leapsecond.com/museum/ulio/
> 
> Good question on the cable. If you don't see it in the manual let me know; I'll dig out my cable and have a look. Note the inner 4 of 6 pins are Vcc, TCO, AGC, gnd.
> 
> /tvb
> 
> ----- Original Message -----
> From: "John Ackermann N8UR" <jra at febo.com>
> To: "Discussion of precise time and frequency measurement" <time-nuts at febo.com>
> Sent: Thursday, March 29, 2018 8:57 AM
> Subject: [time-nuts] Ultralink WWVB receiver manuals?
> 
> 
>> I just acquired an Ultralink WWVB timecode receiver -- more
>> specifically, model 301 receiver and model 333 decoder.
>>
>> I'm looking for documentation on these guys.  Anyone have a manual
>> they'd be willing to share?
>>
>> The key questions are really just two:  (a) is the 6P6C modular cable
>> connecting the receiver and decoder straight, or reversed, and (b) what
>> are the four DIP switches on the back of the 333 used for?
>>
>> Thanks for any info.
>>
>> John
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at 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 at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>