Modifications of my Drake Receiver R8 

Description of modification to improve the tone control for a better boost of the bass-response

R8-ToneControl.pdf  (0,5 MB)

Description of modification to install a backup-battery for the internal clock and to reduce
the power-consumption when the R8 is switched off

R8-Clock-Backup.pdf  (0,8 MB)

Description of Notch-Circuit and hints for better alignment = better notch depth

R8-Notch.pdf  (0,2 MB)

5Spice Models for R8-Notch-Circuit (ZIP 2kB)
These models run also in the unregistered DEMO-Version of 5Spice, values can be changed but not saved.
For details please check on www.5spice.com

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