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 500 and 600 Handsets, cellphones, dated 6-91.

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 Handset with Hands-free microphone, cellphone, dated 7-91.

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 Challenger Mobile Slide-in Locking Mount, dated 9-87.

E. F. Johnson Company Product in the Field. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the two car antennas shown magnetically mounted on trunk of a Chevrolet Monte Carlo, Minnesota license plate year 1983; background shows student apartments of University of Minnesota-Waseca campus.

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 circuit board of a two-tone sequential decoder.

E. F. Johnson Company Product. Circuit Board. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, the circuit board of a Multi-Channel Call Guard, part of the Mobile Series Options; 16 channel capability, PROM Programmable, Synthesizes all 32 EIA CTCSS tones, RF immunity to all frequency bands, Optional scan with tone,

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 Monitor 320407, a desktop microphone.

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 Monitor (no number), a desktop microphone.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, an Astron Power Supply, dated 9-94; shown is a black metal box with toggle switch.

E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Battery Eliminator for the 8180 CX, dated 2-97.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Battery Eliminator, for the 8150 SI, dated 2-97.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Battery Eliminator, for the 8150 Avenger SI, dated 2-97.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Slimline Rapid Charger, dated 3-94

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Single-Unit Rapid Charger, dated 3-94.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Multi-Unit Charger, dated 3-87.

E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Rapid Charger for the LTR 8790, dated 10-86

E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, an earphone adapter for the 8500 and 5876 Handhelds, shown in place on the handheld, dated 12-94

E. F. Johnson Company Product. 4 1/2" x 3 1/2" black and white photograph of an E. F. Johnson Co. radio product, an earphone adapter for the 8500 and 5876 Handhelds, a close-up view of the accessory, dated 12-94

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Vehicular Adapter mounting rail and interface unit, shown on white background, dated 12-94.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Vehicular Adapter mounting rail and interface unit, shown attached to a Viking CL Handheld, on white background, dated 12-94.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of E. F. Johnson Co. radio products, an array of Vehicular Adapter with other accessories, dated 12-94.

E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Vehicular Adapter, dated 12-94.

E. F. Johnson Company Product. 7 1/2" x 9 1/2" black and white photograph of an E. F. Johnson Co. radio product, a Vehicular Adapter shown attached to a Viking CL Handheld, dated 12-94.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio products, an array of LTR Accessories including chargers, speakers, desktop microphones, handheld microphones, brackets, earphones, etc., dated 3-88.

E. F. Johnson Company Product. 9 1/2" x 7 1/2" black and white photograph of an E. F. Johnson Co. radio products, an array of LTR 8790 Accessories including chargers, handheld microphones, brackets, earphones, etc., dated 2-86 to 11-89.