[Elecraft] How to determine K3 filter type - 5-pole or 8-pole

[Mike Flowers]

Hi Gang,

I recently bought a used K3 which has filters installed in both the main
and sub receivers.

Is there an external way of determining if these filters are 5-pole or
8-pole?

Is the value of FLx FRQ for each filter a clue?

Thanks for your assistance!
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73 de Mike, K6MKF
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