Calibrate Local Oscillator in my 6400M

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Staying at home like everyone else I decided to Cal the local oscillator as per the user manual pg 130. It does not say but I will assume that this is done in the AM mode as WWV transmit AM.
I set the Cal frequency at 15 mhz as it gave me a signal of S8&9. The Offset came back as -953.
Is that -953 hz in parts per billion? Manual does not say.
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Andy W3LI

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Posted 2 months ago

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HCampbell WB4IVF

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Official Response
Yes, its ppb, and from what I recall if you're not getting an error msg it's within specs.