[Elecraft] K1-4 4 band version gone?

[Mike Morrow]

>> Changing band modules is a special pain for me 
>> because installed the onboard tuner (which is 
>> rarely used) into my K//1/

> The band module resides under the ATU board making 
> such changes something not done without some 
> strong motive.

Tom/N0SS described 14 years ago a simple technique that
makes a filter board change when the KAT1 is installed
much easier.  He cut two segments from a thin rubber band
and placed them inside the spacers that separate the KAT1
and KFL1.  He threaded the screw coming out below the KAT1
PCB into each spacer with rubber strip in it.  That keeps
the otherwise loose spacers in place on the screw threads
as the screws are turned during KAT1 removal/replacement
for subsequent KFL1 swaps.

The K1 MCU remembers the frequency display calibration for
each band that was set by OFS, using a new KFL1 requires only
loosening the two KAT1 PCB screws, removing the KAT1 (the
KAT1-KFL1 spacers will now remain on the screw threads as the
KAT1 is pulled off), swapping the KFL1, replacing the KAT1,
installing the K1 top cover, and assigning b1 and b2 to the
new bands.

OK...so it's *still* a bit of a pain.  But not having to mess
with those two PCB spacers below the KAT1 is *major* improvement!

Mike / KK5F