[time-nuts] HP10811 problem - wrong frequency
jmiles at pop.net
Sun Jan 13 15:22:20 EST 2008
Yes, I don't think a broken oven controller is going to pull the frequency
off by 890 kHz. :-)
-- john, KE5FX
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
> Behalf Of Tim Shoppa
> Sent: Sunday, January 13, 2008 12:13 PM
> To: time-nuts at febo.com
> Subject: Re: [time-nuts] HP10811 problem - wrong frequency
> Jim Miller schrieb:
> >> i have a problem with my HP10811 ocxo. I connected it properly
> to 24V, 12V
> >> and to my counter to measure its frequency. The measured
> frequency is 10.887
> >> MHz, but it should be 10MHz (also noted on the 10811). A 5MHz tcxo is
> >> measured correctly, so i think the counter is okay. Can anyone
> help me ?
> > There is a thermal fuse on the oven control board which sometimes
> > blows due to age, or it vibrates out, or otherwise fails. This causes
> > the oven to not operate and the unit is guaranteed to be off frequency
> > by a large amount.
> Wow, it's interesting to see what "large amount" means to different
> To some, it's a few parts per billion.
> To others, it's nearly 10% (umm, ninety million parts per billion).
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> and follow the instructions there.
More information about the time-nuts