NSC - K500 Selection Cipher Machine
   

1. Use with Sel-Call Buoy:
 A. Electricity Save ----- one fifth power of Radio Buoy.
B. Strict Confidential.
C. Low risk of interference and stealing.

2. 99 memories of Sel-Call Buoy.

3. This machine can transmit individually and switch with two SSB.

4. Easy to operate.

Tyunyang Electronic Co., Ltd.
No. 423 Hsin Sheng Rd., Chien Chen Dist.,
Kaohsiung, Taiwan, R.O.C.
TEL¡G886-7-8314266
FAX¡G886-7-8315041

    

   

Operation of NSC-K500


  
1. Power Switch 
Set the power switch to "ON," and the digital panel  
indicates power on. After self-testing, it will go back to zero. 
2. Selection of Transmitter
After turning on, you can use this transmitter if you see 3W instruction light. Press , and it will jump to TX-1. 
That means the code signal has been sent to TX1 transmitter. 
Use the same method of TX2. Set the transmitter by change-over switch 3W ¡÷ TX1 ¡÷ TX2 ¡÷ 3W
3. Temporary Enter Code
For example, the selection No. ( code ) of the radio buoy is 1688. Press 1688 sequently, and the No. will show MEMORY CALL NUMBER. Press Call at this time, and the yellow MEMORY No. will disappear. 
4. Set up Memory No.
Please press or to the memory No. After entering the selection No. ( code ) of the radio buoy, press the key once. At this time, the No. will flash. Press the key one more time, and the flashing No. will stop.
The sequence of the memory entering is as the following: ( For example: group 6: 2698 )



Use the above method, then you finish the memory of group 06. If you need to set up other memory No., please repeat the above method again.
5. Indication of Transmission
After pressing the Buoy Call Button, the Call Red Lamp will flash. This is the output of electric wave. After transmitting, the indicator will extinguish and antenna current will go back to zero.
6. Probe of Sel-Call Buoy
Before pressing Buoy Call Switch, please aim the receiver frequency of the direction finder at the frequency of the radio buoy. After that, pressing the Sel-Call Buoy and it can call the radio buoy to transmit, in order to finish the probe of the radio buoy.