E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Challenger ZX with speaker mic; dated 11-90
E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. product, the Scorpion handheld, VHF and UHF, dated 11-91.
E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. product, the Scorpion Handheld, VHF, dated 11-91.
E. F. Johnson Company Product. 6 1/2" x 8 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Philips BC34, or Philips PFX handheld and charger.
E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Transcom 4563 Base
E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Transcom 4563, desktop public address system.
E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Transcom 4563, desktop public address system.
E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Transcom 4563, desktop public address system.
E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the Transcom 4563, desktop public address system.
E. F. Johnson Company Product. 7 1/2"" x 9 1/2"" black and white photograph of an E. F. Johnson Co. radio product, the RSDL Base Station, public address system, dated 9-85.
E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the RSDL Desk Side Base, a close-up view of control panel, dated 3-85.
E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the RSDL Desk Side Base, a view of the interior, dated 3-85.
E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the RSDL Desk Side Base, a view of the front exterior, dated 3-85.
E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the RSDL Desk Side Base, a view of the interior circuits, dated 3-85.
E. F. Johnson Company Product. 9 1/2"" x 7 1/2"" black and white photograph of an E. F. Johnson Co. radio product, the 600 Desk Top Repeater.
E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the PPL 6000, CB radio and microphone.
E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the PPL 6000, CB radio, a view of the interior circuits.
E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the PPL 6000 control station, a CB radio.
E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the PPL 6060 intercom; a view of the interior circuits.
E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the PPL 6050 intercom; a close-up view of the interior circuits.
E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the PPL 6050 intercom; a close-up view of the interior circuits.
E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the PPL 6060 intercom; a close-up view of the interior circuits.
E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the PPL 6060 intercom; a view of the interior circuits.
E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the PPL 6060 intercom; a view of the interior circuits, with back microphone jack
E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, the PPL intercom; a view of the interior circuits, with side microphone jack, dated 9-85.
