[Elecraft] Diversity Revisited

Michael M. Raskin rask1553 at bellsouth.net
Sun Jul 12 12:53:37 EDT 2009


I asked this same question back in December and received many response.  I 
then summarized the responses and posted that summary on this reflector. 
Now that it's seven months later, I was wondering if anyone wants to share 
any additional experiences.  I use diversity reception with two antennas, 
one for the main and the other for the sub-receiver, on the low bands 
(40-160).  For receive only, I have a K9AY loop and, soon, the DX 
Engineering 4-square receive antenna on a separate lot about 100' away. 
Most of the DX activity on the low bands is on CW, except for 80, where 
there is a considerable amount of SSB activity.  For diversity reception, 
the manual says that the best results are obtained when the filters in the 
main and sub are the same bandwidth and matched.  I am using a pair of 500 
Hz for CW diversity but wondering what others are using for SSB diversity. 
Are the pair of 1.8 SSB filters worth it over the stock 2.7 filters in the 
main and sub?  Also, are the 200 or 250 filter too sharp for CW diversity on 
160 (my primary low band area of interest)?  What are others using for CW 
diversity receive?  Anyone using diversity for other than the low bands? 
How about BC diversity using 2 general receive modules?

Mike, W4UM
Florida Contest Group
South Florida DX Association
Mid-Florida DX Association 



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