[Central-Electronics] CE 458 VFO Output Level

Robert Nickels ranickel at comcast.net
Thu May 23 12:21:52 EDT 2019


On 5/23/2019 6:49 AM, Paul Christensen wrote:
> I now have over 100 pages of CE material that includes abridged manual pages, schematics, block diagrams, notes, and mod instructions.  It's quite a mess.  Unless someone has already put this material into cohesive order, I can take this on as a project when I retire.    Adding to the confusion, I see several evolutionary changes to the 20A over its production life.

I think that would be a very worthwhile project, Paul.   Central 
Electronics had a pivotal role in the development and adoption of SSB 
and it wasn't until the technology evolved to the point where phasing 
could be done in software that the true genius of this approach was clear.

There's a lot of important information tucked into the manual and 
schematic that isn't apparent to the newbie, as well as various tips 
that make alignment much easier nowadays.   Maybe an online wiki would 
be the best way to capture and preserve this information.  I know I 
probably have more pages describing how to modify the 458 VFO than about 
the transmitters!   In time perhaps this effort could be expanded to 
include the 10A/B, 100/200V, and 600L.   I'm sure Nick would have some 
thoughts on that.   It could also be a good place to link information 
from other transmitters that were derived from the Norgaard design, such 
as the "Cheap and Easy" and the terrific new designs by KG7TR, all of 
which provide useful reference information for anyone interested in 
phasing SSB.

73, Bob W9RAN



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