
Black Radios - Home Page	Radio Manufacturers Index	Black Radios Document Index	Historical Roots in Brief
Watkins-Johnson - Home Page	Supporting this Research	WJ & CEI Document Index	Sales & Clearance
WJ-CEI Home Page	My Publications	Research Material Donations	Bio and Contact

Communication Electronics Technology
division of Watkins-Johnson

WJ-CEI Receivers & Tuners	WJ-CEI Signal Monitors	WJ-CEI History	WJ-CEI Catalogs
WJ-CEI Surveillance Systems	WJ-CEI System Accessories	WJ-CEI Related History	WJ-CEI Resources

WJ System Accessory Equipment

WJ-9546 FDM unit - This unit can receive six frequency division multiplex USB or LSB signals. Very sophisticated design that paved the way for DSP radios.

The WJ-9548 is a similar unit but with front panel controls