Afternoon all,
I recently purchased a duplexer that was advertised as a 6m duplexer.  Well, it arrived.  I put it on the trusty HP network analyzer and it seems to be tuned to 68 to 69MHz range.  I am hoping I can bring it into a useable range (51.9 in / 51.4 out) by modifying the coupling loops...
 
The construction is similar to the dB-4100 series notch filters...  although the seller was convinced it is a Wacom duplexer.
 
I have no information provided with this unit, and wanted to post a few pix to see if they might jar someone's memory...  but the "upload photos" link is not available when I log into the group.  I have been sternly corrected in the past for attaching photos to postings.....   How do I go about getting the photos on the yahoo website?
 
thanks,
Mike
 
 








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