[time-nuts] Timenoob - Cheap and simple 10MHz reference

[Peter Vince]

Oh Good Lord - not paying attention to the units!  Sorry guys!

     Peter.

2009/12/29 Bruce Griffiths <bruce.griffiths at xtra.co.nz>:
> -185dBW = -155dBm
> so both sensitivity measures are equivalent.
>
> Bruce
>
> Peter Vince wrote:
>>
>> Thanks Ed, yes, I hadn't looked closely enough at the pictures.
>>
>> The "higher sensitivity" I mentioned came from the second line of the
>> "Features" section near the bottom of:
>> http://www.semiconductorstore.com/cart/pc/viewPrd.asp?idproduct=41599
>>
>> "Enables indoor use -173 dBW acquisition and -185 dBW tracking"
>>
>> although admittedly right underneath that in the "Specifications"
>> section is does say:
>>
>> "Track Sensitivity: -155 dBm"
>>
>> A cased of "specmanship"?
>>
>>      Peter
>>
>>
>>
>> 2009/12/29 Ed Palmer<ed_palmer at sasktel.net>:
>>
>>>
>>> The CW-12 consists of the CW-25 mounted on a circuit board with some glue
>>> logic, connectors, etc.  The CW-25 itself is the surface-mount module in
>>> the
>>> middle of the CW-12.  Compare the pictures - you'll see what I mean.
>>>  Both units
>>> are listed as having a tracking sensitivity of -155 dbm.  I don't know
>>> what you
>>> mean when you say that the CW-25 is more sensitive.
>>>
>>> By the way, the CW-12 works great indoors.  Through a typical wood-frame
>>> construction I usually get 7 or 8 satellites with a cheap active patch
>>> antenna.
>>> With a VIC-100 timing antenna, I usually have 10 or more satellites.  1
>>> PPS
>>>  performance is also very good.  Multiple measurements of 1000 periods
>>> shows a standard deviation of<5 ns with a min-max range of<  30 ns.  This
>>> is
>>> without sawtooth correction because this unit doesn't support it - even
>>> with the
>>> Motorola software.
>>>
>>> Ed
>>>
>>> ----- Original Message -----
>>> From: Peter Vince<pvince at theiet.org>
>>> Date: Tuesday, December 29, 2009 10:21 am
>>> Subject: Re: [time-nuts] Timenoob - Cheap and simple 10MHz reference
>>>
>>>
>>>>
>>>> Semiconductorstore.com also have the CW25-TIM at a cheaper price ($64
>>>> vs $89) and it is more sensitive, so can possibly work indoors.  They
>>>> both, apparently, use the same NavSync chips, so does the '25 have
>>>> disadvantages I haven't spotted?
>>>>
>>>>     Peter
>>>>
>>>>
>>>> 2009/12/28 Hal Murray<hmurray at megapathdsl.net>:
>>>>
>>>>>
>>>>>
>>>>>>
>>>>>> Does the factory sell direct in small quantities ?
>>>>>>
>>>>>
>>>>>  From here (California), googling for>Navsync CW12-TIM<  finds:
>>>>>
>>>>>
>>>>
>>>>
>>>> http://www.semiconductorstore.com/pages/asp/supplier.asp?pl=0138&gclid=CL_G5ar>
>>>>  W-Z4CFU1M5Qod1XNWLA
>>>>
>>>>>
>>>>> (Sorry for the line wrap.)
>>>>>
>>>>
>>>> _______________________________________________
>>>> 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.
>>>
>>> ______________________________________________________________________
>>> This email has been scanned by the MessageLabs Email Security System.
>>> For more information please visit http://www.messagelabs.com/email
>>> ______________________________________________________________________
>>>
>>>
>>
>> _______________________________________________
>> 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.
>
> ______________________________________________________________________
> This email has been scanned by the MessageLabs Email Security System.
> For more information please visit http://www.messagelabs.com/email
> ______________________________________________________________________
>