A Note From 
Dave Miller (AA4DF) and Jill Bryant 
at
 
http://www.aa4df.com
 
“Friends don’t let friends pay for free internet download material on eBay” 
 
First, please know that we not only provide free PDFs like this one, we also supply PDF 
documents for profit.  Please know that there is never an extraneous letter (like this one) 
added to PDFs we sell. 
 
This Heathkit SB-220 Amplifier PDF Manual is the low resolution version that we include 
on our “dual res” SB-220 CD.  This is the lowest resolution we currently use.  You will 
notice that it is nevertheless superior in quality to ninety percent of the amateur radio 
manuals currently available, whether by free download, paid CD, or whatever. If you would 
like to have the very high resolution PDF of the SB-220 Manual in order to print the highest 
quality pages possible, please see the SB-220 CD on our web site. 
 
You will see that “leeching” and “marketing” vendors will soon carry this exact same scan 
on eBay and/or their web sites with claims that the material is their own replacing our 
identifiers.  “The Leech” in Houston will carry it along with all the other plagiarized or free 
internet download material on his web site.  NR1DX, a/k/a “The Marketer” in Rochester, 
Minnesota will use very slickly written descriptions that will mislead naïve buyers to believe 
it is his own production of the highest quality (although it’s our lowest).  He does this most 
often with free material he downloads from the Agilent web site, but nothing is immune. 
 
Please support original PDF producers; “leeches” and “marketers” who obtain and sell the 
work of others and/or sell free internet download material to naïve eBay buyers for high 
prices are directly responsible for the scarcity of new material in the scanned manuals 
trade.  Purchase of same along with the “you wash my back I’ll wash yours” attitude 
toward feedback common on eBay are the reason you most likely have equipment you can’t 
find documentation for at any price.  Ham radio manual scans of professional quality are 
few and far between, because we folks who make our living and pay our bills doing this 
know that our investments and efforts will only reward plagiarists like NR1DX, “BAMA”, 
“The Houston Leech”, and other such disreputable entities. 
 
Pass this around all you wish, and please help spread the word about what’s going on in 
scanned manual sales. Here it is in a nutshell:  Over ninety-seven percent of scanned manuals 
sold, especially on eBay, are actually only free download material or are plagiarized! 
 
Even when it’s not free download material, it’s often only the standard resolution scan from 
our ‘dual res’ CDs, often with pages missing due to errors made by ‘leeching’ and 
‘marketing’ vendors while removing our identification. 
 
-Dave Miller and Jill Bryant 
 
http://www.aa4df.com