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Discussion of precise time and frequency measurement

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latest on the lightsquared 'saga'

MO
Matt Osborn
Mon, Mar 7, 2011 7:59 PM

iLotus has the new TX Oncore timing receiver with a built in saw
filter and -159db sensitivity.  Has anyone had a chance to put it
through its paces?

-- kc0ukk at msosborn dot com

iLotus has the new TX Oncore timing receiver with a built in saw filter and -159db sensitivity. Has anyone had a chance to put it through its paces? -- kc0ukk at msosborn dot com
MF
Mike Feher
Tue, Mar 8, 2011 12:33 PM

That sounds neat. My recollection of SAW filters from many moons ago is that
they have a fair amount of insertion loss. One always has to consider
trade-offs. Do you know if it is placed after the antenna and before the
LNA, or, is it after the LNA? Also, you probably meant -159 dBm of
sensitivity, and, I expect that is on a one Hz basis. 73 - Mike

Mike B. Feher, EOZ Inc.
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960 office
908-902-3831 cell

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Matt Osborn
Sent: Monday, March 07, 2011 2:59 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] latest on the lightsquared 'saga'

iLotus has the new TX Oncore timing receiver with a built in saw
filter and -159db sensitivity.  Has anyone had a chance to put it
through its paces?

-- kc0ukk at msosborn dot com


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That sounds neat. My recollection of SAW filters from many moons ago is that they have a fair amount of insertion loss. One always has to consider trade-offs. Do you know if it is placed after the antenna and before the LNA, or, is it after the LNA? Also, you probably meant -159 dBm of sensitivity, and, I expect that is on a one Hz basis. 73 - Mike Mike B. Feher, EOZ Inc. 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 office 908-902-3831 cell -----Original Message----- From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf Of Matt Osborn Sent: Monday, March 07, 2011 2:59 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] latest on the lightsquared 'saga' iLotus has the new TX Oncore timing receiver with a built in saw filter and -159db sensitivity. Has anyone had a chance to put it through its paces? -- kc0ukk at msosborn dot com _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
MO
Matt Osborn
Tue, Mar 8, 2011 6:42 PM

Mike,

The saw filter is between the antenna and the LNA. You're correct as
to the sensitivity measurement; it is -146 dBm acquisition and -159
dBm tracking.  It also specs 1PPS accuracy of < 22ns, 1 - sigma.

Here is a link to the data sheet:
http://www.ilotus.com.sg/sites/all/themes/zeropoint/pdf/tx/TX%20Oncore%20-%20TDS%20(Ver%203.5.0).pdf

On Tue, 8 Mar 2011 07:33:38 -0500, "Mike Feher" mfeher@eozinc.com
wrote:

That sounds neat. My recollection of SAW filters from many moons ago is that
they have a fair amount of insertion loss. One always has to consider
trade-offs. Do you know if it is placed after the antenna and before the
LNA, or, is it after the LNA? Also, you probably meant -159 dBm of
sensitivity, and, I expect that is on a one Hz basis. 73 - Mike

Mike B. Feher, EOZ Inc.
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960 office
908-902-3831 cell

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Matt Osborn
Sent: Monday, March 07, 2011 2:59 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] latest on the lightsquared 'saga'

iLotus has the new TX Oncore timing receiver with a built in saw
filter and -159db sensitivity.  Has anyone had a chance to put it
through its paces?

-- kc0ukk at msosborn dot com


time-nuts mailing list -- time-nuts@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@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

-- kc0ukk at msosborn dot com

Mike, The saw filter is between the antenna and the LNA. You're correct as to the sensitivity measurement; it is -146 dBm acquisition and -159 dBm tracking. It also specs 1PPS accuracy of < 22ns, 1 - sigma. Here is a link to the data sheet: <http://www.ilotus.com.sg/sites/all/themes/zeropoint/pdf/tx/TX%20Oncore%20-%20TDS%20(Ver%203.5.0).pdf> On Tue, 8 Mar 2011 07:33:38 -0500, "Mike Feher" <mfeher@eozinc.com> wrote: >That sounds neat. My recollection of SAW filters from many moons ago is that >they have a fair amount of insertion loss. One always has to consider >trade-offs. Do you know if it is placed after the antenna and before the >LNA, or, is it after the LNA? Also, you probably meant -159 dBm of >sensitivity, and, I expect that is on a one Hz basis. 73 - Mike > >Mike B. Feher, EOZ Inc. >89 Arnold Blvd. >Howell, NJ, 07731 >732-886-5960 office >908-902-3831 cell > >-----Original Message----- >From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On >Behalf Of Matt Osborn >Sent: Monday, March 07, 2011 2:59 PM >To: Discussion of precise time and frequency measurement >Subject: Re: [time-nuts] latest on the lightsquared 'saga' > >iLotus has the new TX Oncore timing receiver with a built in saw >filter and -159db sensitivity. Has anyone had a chance to put it >through its paces? > >-- kc0ukk at msosborn dot com > >_______________________________________________ >time-nuts mailing list -- time-nuts@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@febo.com >To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there. -- kc0ukk at msosborn dot com