[time-nuts] Datum 9390 issues & Spectracom 8195a woes

[Didier Juges]

I knew what you meant :)

Didier

Rob Kimberley <robkimberley at btinternet.com> wrote:

>That should have said: is it drawing any current...
>
>Rob
>
>-----Original Message-----
>From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>Behalf Of Rob Kimberley
>Sent: 11 June 2013 11:40
>To: 'Discussion of precise time and frequency measurement'
>Subject: Re: [time-nuts] Datum 9390 issues & spectracom 8195a woes
>
>Didier,
>
>Is it taking any current?
>
>Rob
>
>-----Original Message-----
>From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>Behalf Of Didier Juges
>Sent: 10 June 2013 18:56
>To: Discussion of precise time and frequency measurement
>Subject: Re: [time-nuts] Datum 9390 issues & spectracom 8195a woes
>
>Rob, 
>
>I have 50 feet of RG-6 in excellent condition, which is the same cable
>I
>used to test the other antennas. I have thought it may be bad, but
>there are
>so few components inside that it is hard to imagine any failure mode
>other
>than flat dead, yet it is not dead, just a few dBs short.
>
>Anyhow, I have a Symmetricom antenna driving a Symmetricom active
>splitter
>obtained from someone on the list, may have been John A, which works
>very
>well, so the Bullet is taking a rest :)
>
>Didier
>
>
>Rob Kimberley <robkimberley at btinternet.com> wrote:
>
>>Didier,
>>
>>The 9390s were supplied with Trimble Bullets and were usually very 
>>sensitive as long as you watch cable length/attenuation.
>>It sounds like you Bullet is faulty.
>>Rob
>>
>>-----Original Message-----
>>From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]
>On 
>>Behalf Of Didier Juges
>>Sent: 09 June 2013 19:42
>>To: Discussion of precise time and frequency measurement
>>Subject: Re: [time-nuts] Datum 9390 issues & spectracom 8195a woes
>>
>>My own Trimble Bullet, and others as far as I can tell by reading this
>
>>list, is not very sensitive in general. I get much better results with
>
>>a Symmetricom than with the Bullet. For that matter, I also see more 
>>satellites with a cheap mag-mount GPS active antenna than with the 
>>Bullet.
>>It is working, but not well.
>>However, if you don't see any satellite with it and it is mounted 
>>reasonably well, it may be broken.
>>
>>Didier
>>
>>
>>On Sun, Jun 9, 2013 at 12:15 PM, Tammy A Wisdom
>><tammy-lists at wiztech.biz>wrote:
>>
>>> Hi all
>>> I have a datum 9390 that will pick up GPS and get the date etc but 
>>> will not go into oscillator lock state. Anyone have any suggestions
>>on
>>this?
>>>
>>> Next up is the spectracom 8195a I have. Allegedly it was working
>when
>>
>>> removed from an American tower site. Sadly it doesn't see any GPS 
>>> satellites. I'm guessing when it was removed someone cut the antenna
>>coax.
>>> It still has 4.5v dc on the antenna port but never sees any
>>satellites.
>>> This device uses oncore gps module. Does anyone know if a) if I 
>>> replace said oncore module will it actually work & b) is there 
>>> anything goofy they did with the antennas on these units?  & c) is
>it
>>
>>> possible they blew the front end of the oncore?  I'm using a trimble
>
>>> bullet antenna with both devices
>>>
>>> That all said. If you have a working 9390 or 819x gps reciever that 
>>> you would consider parting with please let me know. I'm trying to
>put
>>
>>> together a ntp server for my collocation facility.
>>>
>>> Thank you
>>> Tammy A Wisdom
>>>
>>>
>>> Sent from my iPhone
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