Telex Model 200 Vacuum Tube Hearing Aid Telex, Inc. of St. Paul (Minneapolis), MN manufactured the Telex Model 200 vacuum tube hearing aid in 1949. The Telex Model 200 vacuum tube hearing aid measured 3¼” by 2⅜” by ¾” (8.3 x 6.0 x 2.0 cm) and weighed 4½ oz. (128 g) without its batteries. |  | Click picture for larger view | | | | | |
| Front view of the Telex Model 200 vacuum tube hearing aid. It was a plain, yet elegant-looking, hearing aid with it's silver-colored (possibly silver-plated) case with gold-colored pocket clip that doubled as the microphone grill.
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| Top view of the Telex Model 200 vacuum tube hearing aid showing the on/off volume control wheel (left), the 3-position tone switch (center) and the receiver cord jack (right) Note the "Telex" name on the top of the pocket clip (lower center). |  | Click picture for larger view | | | |
| Close-up of the elegant pocket clip which doubled as the external (pass-through) microphone grill of the Telex Model 200 vacuum tube hearing aid. |  | Click picture for larger view | | | |
| Close-up of the "real" microphone grill (a circle comprised of 6 slots) hidden away under the pocket clip of the Telex Model 200 vacuum tube hearing aid. |  | Click picture for larger view | | | |
| Rear view of the Telex Model 200 vacuum tube hearing aid showing it's plain back. |  | Click picture for larger view | | | |
| The whole back of the Telex Model 200 vacuum tube hearing aid swung open from the bottom to reveal the battery compartment (left) and cover for the tubes (right). |  | Click picture for larger view | | | |
| Inside rear view of Telex Model 200 vacuum tube hearing aid. The plastic cover at the top hid the 3 vacuum tubes . This hearing aid had a plastic printed-circuit board. |  | Click picture for larger view | | | |
| Close-up of the battery compartment of the Telex Model 200 vacuum tube hearing aid. This hearing aid took a 15 volt "B" battery such as the Eveready No. 411-E (upper position) and a 1½ volt "A" battery such as the Eveready 1015E (same size as AA batteries) (lower position). Note the arrows for correct polarity. |  | Click picture for larger view | | | |
| Close-up of the unusual (and distinctive) plug and jack of the Telex Model 200 vacuum tube hearing aid. Instead of separate prongs, the "prongs" were flat and molded to the plastic center shaft. |  | Click picture for larger view | | | |
| Close-up of the receiver cord plug of the Telex Model 200 vacuum tube hearing aid shown here plugged into the jack. |  | Click picture for larger view | | | |
| Close-up of the Telex Model 200 vacuum tube hearing aid receiver and plug (shown here unplugged). |  | Click picture for larger view | | | |
| Another close-up of the Telex Model 200 vacuum tube hearing aid receiver and plug. Notice how the plug was shaped to fit neatly to the curvature of the edge of the receiver. |  | Click picture for larger view | | | |
| Side view of the receiver and ear tip of the Telex Model 200 vacuum tube hearing aid. The ear tip were stock tips rather than tips specifically molded to fit the wearer's ear canal. |  | Click picture for larger view | | | |
| The stock tip of the Telex Model 200 vacuum tube hearing aid receiver just snapped onto the receiver (shown here unsnapped). |  | Click picture for larger view | | | |
| The Telex Model 200 vacuum tube hearing aid had a green felt pouch to protect it from scratches, etc. |  | Click picture for larger view | | | |
| The Telex Model 200 vacuum tube hearing aid in it's felt pouch. |  | Click picture for larger view | | | |
| The Telex Model 200 vacuum tube hearing aid in its original case. |  | Click picture for larger view | | | |
| Close-up of the Telex logo on the lid, inside the case of the Telex Model 200 vacuum tube hearing aid. |  | Click picture for larger view | | | |
| The outside of the the original case for the Telex Model 200 vacuum tube hearing aid. |  | Click picture for larger view | | |
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