[Heathkit] Audio filter on HR-10B

[TJRachwal]

Hello all,
	After posting about mods for improving CW selectivity and other mods 
and receiving many responses I decided to follow the advice of adding 
and audio filter rather than making mods to the HR-10B.  It was a 
good move and a very good suggestion.  I opted for the SCAF filter 
from Idiom Press rather than the MFJ much cheaper filter.  The filter 
arrived within three days (Oregon->Mihigan) and in about 15 minutes 
was hooked to the HR-10B.  Wow!  The performance difference is 
amazing!  It wasn't "quite" the same as the 500 hz filter but leaps 
and bounds over the "wide as a barn door" front end in the HR-10B.  I 
could copy CW stations clearly that were down in the mud without the 
filter and not workable.
	Since I didn't have an MFJ to compare it against I can't say the 
SCAF by Idiom press is any better but it has made the use of the 
HR-10B much more enjoyable and I look forward to many FB CW QSOs with 
the DX-60B, HG-10B and HR-10B.  By the way, an xtal calibrator 
(HRA-10-1) is on the way for the HR-10B; station complete!
	HR-10B $80.00; SCAF wired and tested $140.00; enjoyable QSOs, 
memories of days gone by....priceless!  Thanks to all for their 
advice and help.
73....Ted K8AQM


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