430MHz SSB/CW Handy Transceiver
NTS-710 Instruction Manual
Thank you for your purchase of NTS-710. The product is manufactured under the strict control of quality, however, we shall appreciate it if you can contact us in case you may find any damage on the product.
Accessories
1)Connecting cord for external power
2)KEY connecting cord for CW (with 10KΩ)
3)AAA battery (6 pcs.)
Specifications
Frequency range 430.00 ~ 430.99MHz
Wave form SSB(USB), CW(With side-tone and semi-break in)
Transmit Output 1W Max.
Oscillator PLL (With 5KHz-FINETUNE and RIT)
Receiving sensitivity Less than 0.3μV (S/N 10dB)
Receiving method Single Super Heterodyne
Power voltage 9 - 12VDC
Current drain RX: Approx. 70mA at no signal
TX: Approx 250 - 700mA
Antenna 50Ω
Dimension 65(W) x 38(D) x 142(H) mm
Weight 500g Approx. (without battery)
Operation
①Thumb-wheel sw. for frequency set (Main dial)
Ex. When setting is 25, it shall be 430.250MHz
②Fine tune dial
It shall fine tuning the frequency by 5KHz set by thumb-wheel sw.
③RIT dial
It can change receiving frequency without affecting transmitting frequency
④Switch and volume dial
Power shall be down at OFF position. Volume shall be louder by turning it right.
⑤Check lamp
The lamp lights to acknowledge transmitting and receiving level.
⑥External speaker terminal(SP) & CW key connecting terminal
This terminal is used for external speaker. In case of CW, connect to the key you have via attached key connecting cord for CW.
⑦External microphone terminal (MIC) & S meter terminal
This terminal is used for external microphone. When stereo plug is connected, top terminal is for microphone and internal terminal is for S-meter output. When current meter with 500μA is connected to S-meter terminal, signal strength is displayed. In case the current range is not matched, resistor or volume (10KΩapprox.) should be put in series.
⑧5KHz UP switch
This switch is to add 5KHz of frequency to that set by thumb wheel switch.
Example 25 = 430.250MHz → it becomes 430.255MHz when switch is ON
When switch is OFF, it returns to original value.
⑨Antenna terminal
50Ωantenna shall be connected. Connector shall be BNC type.
⑩PTT switch
This switch is to change transmission and receiving. When the switch is pressed, it shall be transmission. When released, it shall be receiving.
Ref. CW application
Receiving : RIT shall be zero-in when the dial is right above. In CW, after zero-in, RIT
dial shall be rotated to left side (reverse clock-wise) to receive beat sound.
Transmission : Put attached KEY connection cord for CW to SP jack and connect to
KEY. Then, transmission shall be completed. (Semi break-in
transmission at KEY-ON) There is no switch to change SSB and CW.
(KEY-ON = CW, PTT-ON = SSB)