[Elecraft] RFC1 & RFC2

[G3VVT at aol.com]

In a message dated 24/01/05 16:49:30 GMT Standard Time,  wa2dkg at earthlink.net 
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