Thank you for your purchasing our product. This product is made under the stringent quality control. Should
there be any breakage in transit, please do not hesitate to contact the shop you purchased this product.
For your safety, read this manual carefully for proper handling and operation before using.
Precautions for using
● Keep the transmitting power at 10W or less to protect a transceiver from the reflected power.
● Do not input 250W or more, otherwise it causes a serious damage.
● Tune the antenna first in case the antenna SWR is outside 15-200.
● Never attempt to apply 15V or more to External Source Terminal. Failure to follow this might cause
breakdown.
● Appearance & Components
① Display Meter For indicating FWD, REF and SWR.
② TR TUNE (430MHz) Variable Capacitor for Impedance on the transceiver side.
③ X TUNE (430MHz) Variable Capacitor for Impedance on the Antenna side.
④ Power Range button for changing the max power of FWD.
⑤ AVG/PEP Switch AVG reads Average Voltage and PEP reads Peek Envelop Power.
⑥ TR TUNE (144MHz) Variable Capacitor for Impedance on the transceiver side.
⑦ X TUNE (144MHz) Variable Capacitor for Impedance on the Antenna side.
⑧ ANT Connector SO-239 type Connector for the Antennas or Dummy Loads.
⑨ TR Connector SO-239 type Connector for the Power of Antenna
⑩ External Source Terminal For connecting Stabilized Power Supply for Display illumination.
● CAT-283 covers a freq range 144MHz/430MHz. It handles up to 250W. The built-in
duplexer helps tuning of each 144/430MHz separately.
● Cross Needle Display shows FWD, REF and SWR simultaneously. Also, separate meter
for convenient placement.
● Beautifully illuminated when connected to the power supply.
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