[Central-Electronics] CE 458 VFO Output Level

[Tom Hankins]

Ditto--the Band Hopper is definitely worth looking for as they are head and
shoulder above in stability and accuracy compared to the 458s. I have had 3
of them and still have one.  Had more than 20 of the 458s including one I
built up back in 1959 from a new surplus transmitter. Get  one and keep
it!!!
Tom H
K0EOA

-----Original Message-----
From: central-electronics-bounces at mailman.qth.net
[mailto:central-electronics-bounces at mailman.qth.net] On Behalf Of George
Maier via Central-Electronics
Sent: Monday, August 05, 2019 8:25 PM
To: W9RAN at oneradio.net; 'Paul Christensen';
central-electronics at mailman.qth.net
Subject: Re: [Central-Electronics] CE 458 VFO Output Level

You may be aware of this already, but there is a vintage VFO out there that
solves the problem; the Lakeshore Bandhopper. It uses the same oscillator
tuning capacitor found in the 458, but adds a crystal controlled mixing
scheme for 40, 15, and 10M.  Admittedly, it's not a CE product, but it picks
up where the 458 left off, and many 20A owners used them back in the day.
I've had one for quite a few years and I know that Jim, WD5JKO, also has one
has one, and other list regulars may have one as well.  They are not as
plentiful as 458VFO's , but worth looking for.  
73, George - W1LSB


-----Original Message-----
From: central-electronics-bounces at mailman.qth.net
<central-electronics-bounces at mailman.qth.net> On Behalf Of Robert Nickels
Sent: Thursday, May 23, 2019 12:22 PM
To: Paul Christensen <w9ac at arrl.net>; W9RAN at oneradio.net;
central-electronics at mailman.qth.net
Subject: Re: [Central-Electronics] CE 458 VFO Output Level

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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