[Hammarlund] Authentic, deluxe SSB adapter for your SP-600 or R-390

[Craig Roberts]

 From time to time, someone will comment about the SP-600's (or R-390's) 
lack of a product detector -- thus making the reception of SSB signals a 
challenging exercise in patience and manual dexterity -- and lament the 
scarcity and expense of such remedies as the TMC and Hammarlund sideband 
adapters.

Modern substitutes for these rare devices are available, of course, and 
many circuits have been published to accomplish SSB reception with 
varying degrees of success.  But what if you're a purist and wish to 
replicate a ca. 1950's sideband adapter?  And what if you want it to be 
a high-end device with the versatility and performance of, say, the 
formidable TMC CV-491A?

Well...for the truly ambitious -- or masochistic -- homebrew addict with 
a broadband connection, I've posted complete construction details for a 
high-performance SSB receiving adapter on my website. It's an 8-page 
article from the November-December 1948 issue of GE Ham News., and it's 
a beaut!  Go to www.aerialacts.com/SSB_adapt.pdf and then go get a cup 
of coffee -- or supper.

I scanned the article in high resolution, full-size PDF format in case 
anyone actually wants to build this thing. Therefore, the file size is 
huge -- almost 30 MB. For those who don't wish to download this massive 
piece, I'll be happy to print it out for you. Just send me a large, 
self-addressed, stamped envelope and I'll get it to you.  I'm "good" on 
QRZ.COM or you can find my address on the contact page of 
www.aerialacts.com.

73,

Craig
W3CRR