John,
The toroids have changed because of the KPA100UPKT.
If you have ordered that kit to update your older kit, you will have two
blue toroid cores. The red cores for use at L15 and L16 will not be
used. No, you cannot use those cores, you must have 15 uHy of
inductance at L16 and RFC1 and it would take more turns on the red cores
than you would want to wind.
Make certain you also have the updated shield kit. If it is current you
will have a shield for the speaker magnet and 3 grounding clips as well
as 2 solder lugs to ground the SO-239 jack directly to the outer side of
the shield.
73,
Don W3FPR
On 2/12/2014 2:11 PM, John Cooper wrote:
Over the years the type of toroids in the kpa100 have changed. Is this because
of availability or other reasons? I have a prewound set of toroids for the
kpa100 but its old enough to not have rfc1. Plus the the ones I have don’t
match descriptions from the latest manual Im working off of. I don’t have the
originals either since I never ordered the kit. Can I modify the L18 I don’t
need anymore to work in rfc1 spot?
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