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Sound starting transmitter for a super long life
KTLV-400
Outline
- It is catch minute sound transmitter in general use for tapping.
- It is type that wave is released when it catch sound so that the battery life to be continued for 10-30 days, if it is monitored 5-6 hours per day.
- Since the lithium battery is used, unlike a dry cell, regardless of external temperature or use time (inside of tolerance level), it operates in the state where it was always stabilized.
- The available distance is 50-200 meters but, it may be shorter in the place where many houses and buildings are available.If Yagi antenna is used with the receiver, the distance will be extended to about 350 meters.
- 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.
- Prolonged automatic recording is made to the recorder of a commercial sound perception starting system.
Directions
- Since there is a space which is made to slide the lid of a case at the point of the thumb, removes it, and puts a battery (lithium CR12600SE or two dry cells of U5) into an inside, a battery is put in there and a lid is carried out. It is careful of the polarity of a battery to prevent mistakes.
- An electric wave will be sent if the switch beside a case is put into the direction of a red mark. 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.
- The antenna is the screw formula of a screw. An electric wave is transmitted having stood 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, as for an antenna, 1/4 lambda strait wire becomes good somewhat from a helical antenna.
- 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. When there is no sound, please be sure to check whether the recording of a recorder has stopped. 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, more than 10 hours can be recorded continuously, and moreover, it can take in and save and reproduce in a personal computer.
Specification of KTLV-400
Sound starting transmitter with a super long battery life
Moduratin system Narrow-band frequency modulation
Battery voltage 3V
Consumption current About 9mA
At the time of a dispatch stop 0.5mA
Continuation use time
High frequency output About 4mW
Dispatch frequency Three kinds
Unnecessary radiation -50 or less dbs
Antenna 1/4 lambda form memory type strait wire with a screw (18cm),
Outside size 14x20x65mm
Operating temperature -10 degrees C - 50 degree-C
Weight About 53g
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.
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