Long battery life Minute sound hearing transmitter with various functions
KTK-400

Outline
  • (KTK-400) is a multi function and catch minute sound transmitter in general use for tapping.
  • An exclusive antenna is required by which the available distance to be extended 2 times in compare with other type transmitters.
  • This type transmitter is made to change its functions according to the purpose in use. For instance, in case to catch a minute breathing in asleep, the transmitter release wave continuously and set to release wave upon sounding to hear a usual conversation. In setting to release wave upon catch a sound, the battery life is extended to several times and, in a short distance, it can be decreased to release power for wave so that the battery life to be extended furthermore.
  • On the grand without any obstruction and attach a Yagi antenna used exclusively with the receiver, the available distance to be extended to about 400 meters in releasing wave continuously.
  • The (KUR-400) and conventional one for UHF band types sold in the market are available However, an exclusive receiver must be used when to catch a very low voice in whisper. Conventional one has a problem to hear due to noise makes by itself.
  • If it is made sound perception dispatch, prolonged automatic recording will be made to an exclusive receiver at an automatic recorder using an attached recording code. Moreover, automatic recording is made also to the recorder of a commercial sound perception starting system.
Directions
  • The lid of a case is made to slide at the point of the thumb, and is removed, and since there is a space which puts a battery (lithium CR2) into an inside, a battery is put in there. A lid is carried out.
  • It is careful of the polarity of a battery to prevent mistakes.
  • Switch beside a case An electric wave will be sent if it is made ON and V.ON. The rest is only established in a suitable place.
  • Although a 2mm hole is in a power supply switch side, since sound is taken in from the hole, installation which plugs up the hole is avoided.
  • An electric wave is transmitted having stood the antenna efficiently [ direction ] perpendicularly. In the inside of a building, and the place where the house builds and is crowded, how to transmit an electric wave becomes bad and a receivable distance becomes short. Notification distance will become short especially if it is in the state where an antenna adheres to a metal plate etc. Please separate an antenna centimeters [ several ] or more from a metal thing, and install it. Notification distance will become extremely short if it puts into inside, such as a metal box. As for notification distance, the direction of continuation dispatch is extended somewhat.
  • Automatic recording can also be carried out to the recorder with the commercial voice starting recording function using the recording code of attachment in an exclusive receiver (KUR-400). When you make it automatic recording, please be sure to carry out a check of operation. It checks whether make sound with pocket radio etc., an electric wave is made to send, there is no noise in a receiver, and it is finely audible. The recording code of receiver attachment is put with after that in the earphone terminal of a receiver, and the external microphone terminal of a recorder, it sets to sound starting, and a recording button is pushed. Since it is the mechanism recorded only when sound has been noticed, when required, it can be heard collectively later.
  • If the newest digital IC recorder is used, a part for 10 hours can be recorded continuously, and moreover, it can take in and save and reproduce in a personal computer.
Specification of KTK-400
    Continuation dispatch -- or Sound perception type dispatch
          (it sends only at time of sound perception) and
          output strength and weakness change "L","H"
    Moduratin system Narrow-band frequency modulation (maximum frequency deviation +- 10Khz)
    Battery voltage 3V (lithium battery CR-2)
    Consumption current : About 9mA(H) ,6mA(L)
            At the time of a dispatch stop (V. ON) : 0.5mA
    Continuation using time About 90 hours (output:H)
    Dispatch output of electric wave 5mW (H), 2mW(L)
    Dispatch frequency Three kinds
            A channel 398.605Mhz
            B channel 399.455Mhz
            C channel 399.030Mhz One either
    Unnecessary radiation -50 or less dbs
    Antenna with a screw 1/ 4 lambda form memory type strait wire (18cm), With [ screw ] Helical Antenna
    Outside size 33mm long, the side of 25mm, height of 18mm
    Operating temperature -10 degree-C ~ 50 degree C
    Weight About 44g
Notes
  • Be careful of the polarity of a battery to prevent mistakes absolutely. If a switch is turned ON by mistake, internal apparatus is damaged, and if it damages, there is danger of emitting smoke.
  • Please do not attach a magnet in a main part. An electric wave does not become weak or it stops coming out..