Hello to the group. I have researched the time-nuts archives and the internet for anything on this gps receiver. There has been speculation and comments about the special down converter and frequency scheme for this vintage of a unit. Turns out from the threads that the scheme is different. But I have been able to home brew a converter that does work. The converter is ugly. 13 DB line amp from my general GPS ant, mini ckt mixer, used way beyond its intended frequency, post mixer amp and no filter to the tnc input with dc blocking cap. LO is a HP 8660 locked to 10 MHZ Rb. (Doesn't get much uglier then this.) My unit is receiving the satellites now.
That said I am looking for any operational information on the unit. Two things. Mine is looking for some internal 1 PPS signal. The other thing is that I believe how you operate this unit is nothing like what we might use today. Could be a lot more manual intervention. (By the way I have supplied the ext 5MC and 1 PPS sig it needs and it accepts them and acknowledges them.) I might believe what I am seeing is operational error on my part. I do have a HP 3801 that works fine. But the Austrons quite a nice looking unit. Any help appreciated. Thanks in advance. Paul WB8TSL _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
