[time-nuts] WWVB remodulator for the Spectracom 8170...

[paul swed]

See my update I think the xtals no longer going to be an issue


On Sat, Jun 22, 2013 at 10:17 AM, paul swed <paulswedb at gmail.com> wrote:

> Trying to catch up on several hundred work emails. Not exciting.
> I absolutely agree that the 60002 would make a lot of sense.
>
>
> On Sat, Jun 22, 2013 at 1:19 AM, Burt I. Weiner <biwa at att.net> wrote:
>
>> Paul,
>>
>> This is probably why they sell crystals cut for 60,002 kHz and 60,005
>> kHz.  I ordered 10 of the 60,000 kHz crystals from DigiKey for about a buck
>> each.  The 60,002 and 60,005 crystals were only available in lots of a
>> bazillion.  It sounds like when I build the oscillator portion of the
>> remodulator I may to have to play a wee bit to get the new carrier within
>> tolerance of what the 8170 wants to see.
>>
>> Sorry to hear you've been fighting a flu bug.  A lot of folks I know have
>> recently gone through a bought of the flu.  I had it for a week but it was
>> mild compared to what some folks I know went through.  I hope you're
>> feeling 100% real soon.
>>
>> Burt, K6OQK
>>
>> At 09:26 PM 6/21/2013, time-nuts-request at febo.com wrote
>>
>>> Hello to the group
>>> Very good thread. I am recovering from a severe flu. Thats wgy I have not
>>> been around.
>>> This will be brief.
>>> 1Hz off seems to cause an issue.
>>> The 60 khz xtals from mouser all seem to always be low.
>>> So by lowering the drive and I assume loading. The 20K resistor they come
>>> into range.
>>> Don't like this and ordered a few xtals from china. Oh lets say 50.
>>> Nothing says a 6 mhz xtal and divider can't work. Just adds complexity
>>> and
>>> cost.
>>> By the way the MAS 6180 is available but the distro wants an order of 50
>>> at
>>> $4 each.
>>> I can't take on the role of purchasing and distributing the chips.
>>> Regards
>>> Paul
>>>
>>>
>> Burt I. Weiner Associates
>> Broadcast Technical Services
>> Glendale, California  U.S.A.
>> biwa at att.net
>> www.biwa.cc
>> K6OQK
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>
>