Sound powered phone dynalec sps210. A mounting bracket is also available.
For simplicity and flexibility all headsets are compatible and interchangeable.
Sound powered phone for sale. Does not require any external power source. Constructed for use in the harshest environments. Special capsules transform the acoustic energy of the voice into electrical energy and this one back into acoustic energy.
This company is form england. Dynalec corporation © 2011 all rights reserved 2896026 sound powered phone, kettler alfred h, secretary of the navy, filed:
For use in a simple party line system for up to six stations. This vintage ship’s phone measures 10 inches tall not including any cords that hang down, the phone is only 8 inches wide. England and australia used balanced armature or sound powered units on ships also.
Spc's sound powered telephones are found in industrial plants throughout the country and its system 500 visitation phone system in over 500 correctional facilities in the u.s. This type of telephones are used when a secure and continuous communication is needed, like it is in the military vessels. The thermoplastic handsets are well adapted to hyperbaric, civil and military applications requiring audio communication without any energy.
Two distinct models (looks are the same) ap12501 (australia), ap12591 (england) both of these models may have been used in both england and australia. The silec g813a sound powered phone works only with the energy generated by the voice. The energy needed for the communication comes, only, from the user´s voice.
As an example, a study of the attack on the uss cole in october 2000 concluded that it was a major mistake to not have full sound powered telephone. You can trust brands such as amron This safe and simple communications system requires no power.
Headsets, jumper cords and extension cords operate over a 2 conductor, 20 awg cord. A sound powered telephone network is often the only means of communication available during power failures and is thus hailed as a critical communication link during casualty or stealth conditions. Sound powered phones for common talking/common signaling.
Voice powered systems should not be grounded. Do not put cable in same conduit with electrical wires.