Need help?Do you have a question about the National NC-57 and is the answer not in the manual?
Provides step-by-step instructions for unpacking and installing the receiver.
Details the function of each control on the front panel for proper operation.
Outlines the procedure for setting controls for optimal voice and music reception.
Details the specific control adjustments required for code signal reception.
Details the procedure for aligning the intermediate frequency amplifier stages.
Provides step-by-step instructions for unpacking and installing the receiver.
Details the function of each control on the front panel for proper operation.
Outlines the procedure for setting controls for optimal voice and music reception.
Details the specific control adjustments required for code signal reception.
Details the procedure for aligning the intermediate frequency amplifier stages.
To Next Page
General