[time-nuts] HP5370A vs B version

[Taka Kamiya]

What are the differences between HP5370A and 5370B version?
I have been told A's input ports are rather delicate and it has been better protected on B version.  I found notes on A and B and looked a them side by side but honestly, they are difficult to compare.  Anyone on list who had both and can tell from experience?

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(Mr.) Taka Kamiya
KB4EMF / ex JF2DKG