Thanks group for the replies ! Socket is not an issue in my case, since I soldered wires directly to it. I am thinking that main reason for the troubles was the power supply. I was thinking that Vectron 218Y44442 is OK for 12V (I have no documents for that model). And it was OK for period of time. Then it stop to work (after power interruption). And only when I open that can, I spotted 78L12 regulator on PCB. That means, this OCXO needs more than 12V. I am using 15V now. The Austron was manufactured back in 1983. And it seems it was not been in use for many years. Maybe this little mechanical tweak is necessary to wake it up. On 2017-10-17 04:31, Clint Jay wrote: > I was thinking the same as Azelio, I had a Racal 04B OCXO which refused > to > start until I reseated the crystal in the socket. After that, well, > it's in > almost daily use as a reference in a 1992 counter and has never stopped > since. > > On 17 Oct 2017 07:18, "Azelio Boriani" <azelio.boriani@gmail.com> > wrote: > >> The crystal is socketed: the problem might be the socket. >> >> On Tue, Oct 17, 2017 at 1:56 AM, Bob kb8tq <kb8tq@n1k.org> wrote: >> > Hi >> > >> > Welcome to the 1990’s … that’s an *old* design. Since Vectron kept >> building same / same >> > (if you ordered it that way) who knows when it was built. >> > >> > Bob >> > >> >> On Oct 16, 2017, at 4:10 PM, Vlad <time@patoka.org> wrote: >> >> >> >> >> >> Hello, >> >> >> >> I am wandering if anybody observe the behavior for OCXO, when its stop >> to reproduce the signal, and the only way to return it back to >> business is >> little mechanical stress. >> >> >> >> I have TWO of such OCXO. One of them is Austron 11.2 Mhz. And another >> one is Vectron model 218Y4442 9.8304Mhz >> >> >> >> In case with Vectron, I even disassemble it (to whom who brave here is >> a pictures): >> >> >> >> http://www.patoka.ca/Vectron-218Y44442/ >> >> >> >> Then as I connect it to the PS, I realize it start to reproduce the >> signal again ! Before this it was nothing ! I tried different PS >> before to >> open this "can" as a last resort. >> >> >> >> For the Austron - I didn't disassemble it. Instead I just kick it a >> little bit. And immediately after that, it start to produce the signal >> ! >> >> >> >> >> >> -- >> >> WBW, >> >> >> >> V.P. >> >> _______________________________________________ >> >> time-nuts mailing list -- time-nuts@febo.com >> >> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> mailman/listinfo/time-nuts >> >> and follow the instructions there. >> > >> > _______________________________________________ >> > time-nuts mailing list -- time-nuts@febo.com >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ >> mailman/listinfo/time-nuts >> > and follow the instructions there. >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/ >> mailman/listinfo/time-nuts >> and follow the instructions there. >> > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. -- WBW, V.P.