[time-nuts] Downconvertor spec for Quartzlock A8 GPS

Clive Green cgreen at quartzlock.com
Sat Mar 14 19:02:30 UTC 2009


The Quartzlock A8 series GPS T&F reference does use a down-convertor mounted
under the antenna. Contact Nick Law at nlaw at quartzlock.com for details. We
will service any unit, however old (we have never said “no longer supported”
in 45 years) The series were A8-B (bench instrument GPS OCXO) A8-RT, (1U
rack-mount GPS OCXO) & A8-M (2U rack-mount, metrology unit with high stab
rubidium oscillator) disciplined by the 100% carrier phase tracking RX. Most
problems were, as common with many GPS, poor antenna position or
cable/connector assembly, where the cable had been extended or water ingress
to down convertor (bike pump action) if connectors not sealed, we supplied
real of self amalgamating tape with each unit. The cable only carries 90MHz
& 10.23MHz with dc supply from the A8 GPS RX antenna input connector.  uP
now obsolete, so the line was replaced by current E8-X/E8000/E8010-Rb. E8-X
board level OEM units £295. Can replace more expensive A8(£5k….15k) Rb have
3yr warranty. Earlier manuals will be on www.quartzlock.com “soon”. 2nd
users will still have service.

 

Clive Green 

CEO 

Quartzlock 

+ Gothic, Plymouth Road, Totnes, Devon. TQ9 5LH England

(: +44 (0) 1803 862 062 7: +44 (0) 1803 867 962

š:  <mailto:nlaw at quartzlock.com> cgreen at quartzlock.com ü:
<http://www.quartzlock.com> www.quartzlock.com

Skype: clive.green.skype Messenger: cgreen at quartzlock.com

Registered office: Gothic, Plymouth Road, Totnes, Devon. TQ9 5LH England
Registered in England

 P Think Environment, print only if necessary.

 

This is an e-mail from Quartzlock (UK) Limited, its contents (including all
attachments) and any files transmitted with it are confidential and intended
solely for the individual(s) to which it is addressed and may also be
privileged. It may not be copied or printed by anyone other than the
addressee and may not be disclosed or distributed in any way.  If you have
received this e-mail in error please inform Quartzlock (UK) Limited and
delete it from your mailbox or any other storage devices.

 

Although this e-mail and any attachments are believed to be free of any
virus or other defects which might affect any computer or IT system into
which they are received, no responsibility is accepted by Quartzlock (UK)
Limited or any of its directors, staff or associated businesses or contacts
for any loss or damage arising in any way from the receipt or use thereof.

 

Opinions, conclusions and other information expressed in this message are
not given or endorsed by Quartzlock (UK) Limited unless otherwise indicated
by an authorised representative independent of this message.

 



More information about the time-nuts mailing list