* Non-Volatile 10 second storage
* Test and Reset Capability
* Field Programmable
* Morse Code or Voice Capability

     Designed for use with FM and TV translators where required by FCC Rules and Regulations #74.1250 (c) (7) (ii) and #74750 (c) (7) (ii). These units are also used on other equipment requiring Morse Code or voice station ID’s. The FCC provides for two basic automatic ID systems, the 30% AM type, or the FSK, (frequency-shift-keying) type. Either of these can be controlled using the TC-2W.
    Storage is accomplished with a non-volatile analog EEPROM. Ten seconds of storage is provided for any voice-quality audio signal. This allows the unit to be encoded with either a Morse code ID or a voice ID. The unit can be programmed by a user or at TEPCO. If a Morse code ID is used the user must have the capability of generating the tones. There are several Morse code computer programs available (generally used by Amateur Radio operators). The EEPROM is socketed so it can be replaced with one with a different ID. The EEPROM can be reprogrammed 10,000 times and will store it’s contents for over 100 years.
    To reprogram the unit, a 1 Volt peak-to-peak  signal (up to 10 seconds) is connected to an internal RCA phono jack. A jumper is then put in place to enable recording. Recording is stopped when the jumper is removed or the memory is filled which ever occurs first. A small internal speaker allows the user to hear the message by pushing the external “TEST” button. The output signal is available at an external RCA phono jack and it’s level is adjustable up to 2 Volts peak-to-peak.
    An accurate crystal controlled microcontroller allows automatic ID every 30 minutes or every 60 minutes (selectable by jumper). The units timer is reset either upon power up or by pushing the “RESET” button on the front.
    Power requirements are 12VDC @ 100 mA which is usually supplied by a standard plug-in-the-wall transformer.
    TEPCO FM translators are designed to use the 30% AM system. This was chosen for many reasons. Most FM receivers will completely reject the AM component because of their design characteristics. This means under normal conditions the average listener will never hear or be able to detect the code. This is desirable since the ID is primarily intended for FCC purposes. Another beneficial attribute of the AM system is found when FM translators are used in a relay type system, as provided in the FCC Rules and Regulations. Based on the fact that each translator will not repeat the AM code of another, each site can identify itself independently; a feature not possible with the FSK approach.
    TEPCO TV translators, on the other hand, use the FSK system. In TV applications it has been found that FSK has the least affect on what the viewer observes. The TC-2W can also be used in this case.
    When ordering please specify the type of equipment with which the coder will be used and your call sign. For further information contact TEPCO.
 
For more information, e-mail us at tepco@rapidnet.com.