iscussion of precise time and
frequency measurement" time-nuts@febo.com
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Data Fri, 08 Sep 2017 08:49:12 +0000
Oggetto Re: [time-nuts] HP 5065 Meter readings after restoration and
adjustments: 2nd Harmonic Problems ?
In message <125529892.249004.1504854237...@mail.yahoo.com>,
In message <881182040.5268197.1504868987...@mail.yahoo.com>, Ulf Kylenfall via
time-nuts writes:
>
>2nd Harmonic level has gone down from 18 to 14 in a few hours.Needle is
>nervous in the way that it wiggles about one needle-widthin a random but slow
>pace.
>All other readings are
2nd Harmonic level has gone down from 18 to 14 in a few hours.Needle is nervous
in the way that it wiggles about one needle-widthin a random but slow pace.
All other readings are stable.
Rotating the knob back and forth restores the previous readings.
I am considering a fault in the 137 MHz
> My intention is to leave the instrument on for severalweeks in order to see
> if it is stable. Right nowmy concern is wether the 2nd harmonic
> readingindicates a wear out of the photo cell.
> When repairing the RFV Cavity, all components weretaken out and carefully
> examined. There wereno
In message <125529892.249004.1504854237...@mail.yahoo.com>, Ulf Kylenfall via
time-nuts writes:
>The meter is not stable and the needle is somewhatnervous. When tapping the
>instrument with a smallscrewdriver, this value jumps up and down.
If the jumps are always the same place on the
Having repaired an old 5065 with help from documentson the KO4BB and this
list, I took it to my workat Onsala Space Observatory where we have two
H-Masers in order to fine tune it.
Initially, the meter readings were close to those listed insidethe protective
lid, dated 1987 when the instrument
