[time-nuts] Austron 2000C
phk at phk.freebsd.dk
Thu Aug 11 14:45:31 EDT 2005
In message <000801c59e9d$f58e1270$9600000a at master>, "EJ Kroon" writes:
>I have an austron 2000C. I like to use this instrument in Europe, but =
>there are only 3 digits to enter the
>repetition rate. For Europe we need 4 digits. I trying to modify the =
>unit so I can use 4 digits (7499).
Make sure you don't waste too much time on this, many of the
transmitters close end of this year.
>Have anyone did this before? I plan to replace the ringcounter using =
>74192 ICs. Using the parallel load
>and count down to zero on a 100 kHz clock. If this works I am able to =
>use the instrument on the Sylt chain.
I have played with it another way: I set the receiver to 7500 and
fed it a 10MHz that was detuned 1 part in 7500 (actually generated
by DDS but you get the idea).
I did think about generating the 4-digit timing with a PIC16 instead,
but never got around to it.
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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