Need schematic for ANAN-10 (hermes) TCXO daughterboard

[BrianLloyd]

My ANAN-10 stopped using the internal 10MHz TCXO reference, which ends up pulling the ADC clock off by about 100ppm. It works OK using an external reference. I need the schematic (and hopefully board layout) in order to troubleshoot.

I initially suspected how the 10MHz TCXO was soldered to the board and ended up reflowing those connections but that didn't solve the problem. I am able to confirm that the 10MHz from the on-board TCXO is getting onto the board but then it disappears.

I sent email to Apache Labs support mailbox but that bounced with "mailbox full". I remember when someone posted the design for this but it was about 10 years ago and doesn't seem to be in the archives.

Thank you for your help.

[w-u-2-o]

It would appear you did not look at the schematics section of this forum...

https://apache-labs.com/community/viewforum.php?f=35

[BrianLloyd]

Thank you. Before I asked I searched the site. I evidently used the wrong keywords. After much additional effort I did find it referenced in another message. Still haven't found the schematics section. Where might one look for that?

Thank you.

[w-u-2-o]

Brian,

Did you not follow the link I put in my first post above? If not, why not?

73,

Scott

[DH1KLM]

Direct link to the schematic.
https://apache-labs.com/community/downl ... .php?id=18

[BrianLloyd]

Thank you both for the links. Problem located. Bad diode. Diodes on order from Mouser.