[time-nuts] TrueTime AL-AK GPS receiver help

Bill Hawkins bill at iaxs.net
Thu Apr 30 15:34:01 EDT 2015


Very interesting that the signal is down-converted to 4.092 MHz to match
the ancient XL-AK receiver.

They are intended to be sold as pairs, but it may be possible to get
only the down converter. The source of the 16 MHz LO seems to be on the
down side, which is OK, A separate power cable is required. So is some
discussion of the application with the manufacturer.

Bill Hawkins


-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Alex
Pummer
Sent: Thursday, April 30, 2015 12:56 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] TrueTime AL-AK GPS receiver help

I am not so sure that it is applying to that case, but there are GPS
antenna cable  extenders which converting down the incoming GPS signal
to frequencies at which the cable attenuation see here: 
http://www.microsemi.com/products/timing-synchronization-systems/accesso
ries/government/l1-gps-antenna-down-up-conv
http://www.gigatest.net/symmetricom%20TT&M/GPS%20&%20Time%20Code%20Instr
umentation/ds_gps_antenna.pdf
73
KJ6UHN Alex





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