At 09:36 AM 7/22/04, you wrote:
>My very old Measurements Model S-1319A RF signal generator has finally
>started to act up. The deviation meter is showing wide fluctuations and the
>output signal fades in and out with the fluctuations. The output frrequency
>apears to still be stable. Has anyone encountered this problem with the
>S-1319A? The small manual I have for the unit doesn't have any
>troubleshooting diagnostics. Any help/suggestions are most welcome.
>
>Doug VA7DD
If it's built like my old Model 70 the attenuator physically moves as you
twist the dial. Check the coax around the attenuator - a known failure
mode is that the coax fails internally sooner or later. And use HIGH
quality double shielded.coax to replace it... the second shield will
lower the leakage some over the original stuff. I forget if it's the size of
RG-174 or RG-58... if it's the 58 size use RG-400
Mike WA6ILQ
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