WWII U.S. Military TN-18/APR-4 Tuning Unit – 300–1000 MC Radar/Radio Receiver Component DTG This rifle features the standard

This rifle features the standard No

but no major wear visible

with cracking on the white background

(2) unopened

• Post-Civil War Era (1870s)

WWII U.S. Military TN-18/APR-4 Tuning Unit – 300–1000 MC Radar/Radio Receiver Component DTG This rifle features the standardOriginal WWII era U. S. military Tuning Unit TN 18 APR 4 covering the 300 to 1000 MC frequency range. This unit was part of the AN APR 4 radar radio search receiver system, used for high frequency signal detection, electronic surveillance, radar warning, and related wartime early postwar electronic work. The front panel retains its original data plate marked Tuning Unit TN 18 APR 4, Range 300 to 1000 MC, with frequency dial, autosweep manual control,