Receiver with the remote control function
KRT-800R


Outline
  • It is the same size as a world's smallest three channel receiver (KUR-400), and is the epoch-making product which carried out the condensation internal organs of the transmitter for control and receiver for remote control transmitters (KRT-800T and KRT-800TA).
  • A remote control transmitter and a set use. It is immediately receivable if a power supply switch is set to ON to hear it. If the switch of a receiver is cut when stopping, dispatch of the electric wave of a remote control transmitter will also go out automatically less than several minutes.
  • A remote control transmitter does not send an unnecessary electric wave, and the battery life at the time of standby is also prolonged remarkably. If KRT-800T and a set use, the notification distance of an electric wave is about 200-400m in prospect distance.
  • It can use also as an ordinary three channel receiver. Please do not attach a magnet to a main part. It may break.
  • A possibility of being discovered since the installed remote control transmitter does not always send an electric wave becomes closely that there is nothing.
  • Although the number of standard articles is E, arbitrary frequency can be manufactured if it is between 315Mhz - 320Mhzes. Price increases 30%. Time for delivery is required for one month.
Directions
  • If the battery lid in the rear on the back is pressed down so that it may pinch by the thumb and the index finger, and it is slid back, the battery wearing place of a battery is visible. The dry cell of U5 is used two. If an alkali dry cell is used, it can use for a long time.
  • the antenna terminal of the front of a main part -- an attached helical antenna -- or a wire antenna is put Subsequently, knob of a small slide switch written to be ONOFF of the side It moves in the direction of ON. It will be in a state of operation now. As for electric wave efficiency, about ten percent becomes good [ direction ] having stood the wire antenna straightly.
  • It can use also as a receiver ordinarily independently. However, only when a power supply switch is turned ON at first, it is audible for [ no ] about 3 seconds.
  • When using as a remote control receiver, in a standard article, an internal instruction transmitter becomes only F channels [ one ]. The channel of a remote control receiver is surely set as F. In the case of the frequency of a special order, it unites with the frequency. If a power supply switch is put in, for 3 seconds will send an instruction electric wave to the internal-organs receiver by the side of a remote control transmitter at first. The internal-organs receiver by the side of a remote control transmitter is operating a short time at intervals of about 2 seconds, in order to save a battery. Therefore, sending an instruction electric wave only at the beginning which put in the power supply switch is continued for 3 seconds. Perception of it of the internal-organs receiver by the side of a remote control transmitter begins to send an electric wave, instant. Although the dispatch electric wave by the side of a remote control transmitter is henceforth disconnected at intervals of about 4 minutes, the direction of a remote control receiver side will issue instructions of re-connection at an instant, if the electric wave by the side of a remote control transmitter is disconnected. Therefore, unless the power supply switch by the side of a remote control receiver is cut, it can continue receiving continuously. If the power supply switch by the side of a remote control receiver is cut when stopping, transmission of the electric wave by the side of a remote control transmitter will also be cut automatically less than several minutes.
  • A sound is heard by the attached earphone. It puts in the round hole of the side with a power supply switch. The front volume regulation knob (VOL) is set to zero before putting an earphone, and it turns after putting until it becomes suitable volume. No sound can be heard, if the electric wave is not sent, the channel is not correct or it separates too much with a transmitter. Since a sound powerful at a stretch will go into an ear and will hurt its ear when sound is received if it keeps turned, be careful.
  • When it is cut on the way and it re-connects, once you turn OFF a power supply switch, please turn ON again. If it cuts and it turns ON at an instant, no re-connection may be possible and there may be. Please turn ON after setting between for about 0.5 seconds.
  • When recording combining a commercial recorder, it is used by putting an attached recording code in the earphone terminal of a receiver, and the external microphone terminal of a recorder. A receiver, a recorder, and cases are put together and it is made not to install. When used by sticking, in between, on both sides of paper, a cloth piece, etc., please carry out and insulate and install. Unless cases are insulated, it may not be recorded normally.
  • Since the battery of a main part is exhausted when the voice which has received mixes and hears a strange sound, please replace with a new battery. Moreover, since the battery is exhausted when the sound which can be heard from it having been audible until now becomes more smallish, please exchange a battery.
  • a receivable distance -- if it is a last-minute place, the sound "bhasa bhasa" can be heard In this case, it changes into the state where noise does not go into the sound which approaches a transmitter to a slight degree, or adjusts direction of an antenna or the position of a receiver and has been received. When you do not change, please once cut a power supply switch and put in again.
Specification of KRT-800R
    Receiving part.
      The receiver for narrow-band FM (double superheterodyne system 1ST:10.7Mhz 2ND:455Khz).
      Received frequency Three kinds.
        D channels 320.235Mhz.
        E channels 320.675Mhz.
        F channels 321.135Mhz is one wave either.
      Temperature range -10 degree-C - 50 degree C.
      Receiving sensitivity 0.3microV (-117dbm) S/N 20db.
      Voice output 50mW (earphone 32 ohm).
      Consumption current About 9mA (VOL 0) About 6mA (at the time of standby).
    The dispatch part for remote control.
      Narrow-band frequency modulation type transmission.
      Oscillation frequency E channels 320.675Mhz.
      Instruction signal wave 2.5Khz analog system.
      Consumption current 80mA (build in the voltage stabilization circuit ).
      High frequency output Initial instruction signal discharge time of 30mW 3 seconds.
      Re-connect time 0.05 seconds.
      Antenna output impedance 50ohms.
      Unnecessary radiation Less than [ -50db ].
      Frequency stability Below + - 5 ppm (-10 degree-C - 50 degree C)
    Antenna 50 ohms .
      RCA jack A helical or 1/4 wave strait wire (22cm) (option).
    Power supply voltage 3V (U 5x2).
    Operating temperature -5 degree-C - 50 degree C.
    Outside size 14mmx73mmx26mm.
    Weight 30g (a battery and an antenna are not included).
    Manufacture in the range of 310Mhz- 320Mhz is possible for a custom-made item (channel interval 20Khz).
Notes
  • When not receiving, the switch of a battery is surely cut. When you do not use for a long period of time, please take out a battery and place it. Internal parts are damaged when a battery carries out a liquid leak.
  • Since the inside consists of precision parts, please do not drop it, or do not apply power which is twisted strongly. It carries out as carefully as possible, the desorption of an antenna also having both sides for a root portion with a finger, and turning to right and left little by little slowly.
  • Please do not attach a powerful magnet to a main part. It stops functioning at an instant like a magnetic card. It does not return, unless it readjusts.