Vintage Radio Shack Micronta 21-525B Field Strength/SWR Tester, Tested & Working

Radio Shack Micronta Field Strength/SWR Tester 21-525B

Micronta Field Strength/SWR Tester, Cat. No. 21-525B Tandy (Radio Shack) Corp

Vintage Micronta Field Strength SWR Tester Electronics By Radio Shack 21-525A

Vintage Radio Shack MICRONTA Field Strength and SWR Tester 21-525B Customized??

Micronta Radio Shack 21-523 Field Strength SWR Tester with box and manual

MICRONTA Field Strength and SWR Tester Model 21-525B