[time-nuts] Rapco 1804M manual and Control Mode Access ?

[Ole Stender Nielsen]

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 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 and a manual
> for that would be a help. If the bug is not fixable,
> perhaps a later trimble gps engine could be substituted,
> as the protocol may be common.
>
> This is a 5MHz unit with pps, and useful around the
> lab as a reference for some older test gear...
>
> Regards & Thanks,
>
> Chris
>
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