Hi,
Just a note the thanks to all who helped with the info on the above
gpsdo and the gps engine manuals. Now in the rack and seems rock solid
compared to a 10MHz gpsdo.
Looking at the Trimble manual, looks like a standard Trimble protocol.
Will connect a serial analyser inline to find out
Where I worked we had a few of a later model Rapco 1804 (1804 L26 D2) which
had an LPRO Rubidium inside, and gave out 10MHz. That had an eight-channel
Trimble receiver, but I'm afraid I can't remember the model number.
I wasn't very impressed by the disciplining algorithm which, once it had
Hi Chris,
I posted a manual to mediafire some time back, have just checked and the link
is still working..
http://www.mediafire.com/file/5evbveha6pccc1l/Rapco_1804M_1882M.pdf/file
This is a combined manual for the 1804M MK2 GPSDO and 1882M2 MK2 distribution
amp, both black
fronted
Hi,
The 1804M was produced in different versions.
Is your unit merely called 1804M, or perhaps 1804M MK2, or 1804M3?
BR
Ole
Den 26-10-2020 kl. 16:45 skrev Chris Quayle:
Hi,
Looking for the user manual for the above gpsdo. At power
up, keeps repeating gps status and time, whereas there
is an
Hi
Normally a date roll over bug is a non-fixable item in these older
devices. The basic GPS modules simply did not start to have the
“smarts” to handle this until at least a decade after they went out
of production.
Simple answer is to leave it as is and just use the frequency output.
If you
Hi,
Looking for the user manual for the above gpsdo. At power
up, keeps repeating gps status and time, whereas there
is an internal control mode for setup. Works fine and
locks to gps, but the year is stuck at 2001, suggesting
a date rollover bug.
Internal GPS engine a a (Trimble ?) TNL22880
