[Elecraft] I want to swap K3 5 pole 500Hz filters to get better match

[Jarmo Blomster]

Hi,

I have a K3 500Hz of the five pole filters for offsets -0.84 and -0.78.
I would like to swap those with somebody so that we both get a better
matched pair for main and sub rx.

Both my filters are quite new, the main rx serial number is 6913 and sub rx
is installed in last week. My fault was not to order matched filter for the
subrx.

73 de oh8kva/oh9vd Jarmo