[time-nuts] Efratom FRT-H Lamp removal and supply schematic

Sebastian Diaz sebas.diaz at gmail.com
Sat Oct 25 12:44:20 EDT 2014


Thanks, Corby!
Followed your advice, and made a 15x2mm screwdriver by grinding down a
carbon steel scraper. A combination of 10min heating on the physical
package, plus the tool and got the rubidium bulb out.
I've had these oscillators running since 8:00 in the morning, doing a
simple XY signal tracing comparing both. The older unit loses lock
semi-periodically, and then relocks after a random time from 4 to 10
minutes. The newer unit hasn't lost lock, but there may be an issue with
the sma connector.

Regards,
Sebastian


On Fri, Oct 24, 2014 at 11:07 AM, <cdelect at juno.com> wrote:

> Sebastion,
>
> Let the unit warm up for 10 minutes, then power down and then try the
> lamp removal.
>
> It turns CCW to remove.
>
> Use a BIG screwdriver!
>
> Cheers,
>
> Corby
>
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