In a message dated 24/01/05 16:49:30 GMT Standard Time,
[hidden email]
writes:
...I built several early production SSB's in which RFC1 and RFC2 were
mounted flat against the bottom of the board, in fact, the silk screening for them
still exists there on the bottom of the latest boards...I don't remember
reading anything about why they were moved to the top, but there must have been a
reason...?...
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Asked Gary at Elecraft only about a week back the same question and he told
me the toroids need to be on the top to prevent interference with the
varactors in the CW IF filter, and to prevent additional signal leakage or signal
pickup.
Have a feeling mine are on the underside as the screen printing shows, so
will move them if they are when next inside the K2. Will also compare the
Spectrogram responses between the two methods to see if there any difference that
can be seen there.
Regards,
Bob, G3VVT
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