Thanks, Gary:
According to Tao Qu (eBay tquchina) in the Yahoo redsun-shortwave-radios group, Message# 2374, the Redsun RP2100 is at end of life:
"Hi All,
The RP2100 is EOL because the main chip is stop production...
Regards,
- Tao Qu"
Presumably this applies to the CCRadio-SW as well, which is currently on sale at C. Crane for $125.
Use of specialized chips that go out of production will prevent some repairs on newer radios, while many vintage radios using discrete components can be repaired indefinitely.


This looks like an interesting book: "Hello Everybody! - The Dawn of American Radio"
http://radio-timetraveller.blogspot.com/2010/09/hello-everybody-dawn-of-american-radio.html#links
It's available from Amazon in both hard cover and Kindle formats.
Posted by: Gary | September 27, 2010 at 05:29 PM
Updated link:
http://radio-timetraveller.blogspot.com/2010/09/hello-everybody-dawn-of-american-radio.html
Posted by: Gary | September 27, 2010 at 05:35 PM
Now I'm very curious about the guts of the s450dlx. DSP?
Posted by: Chris | September 28, 2010 at 10:15 PM