JINGTONG JT-208 User Manual

Adelaide Hills Amateur Radio Society short form manual for Jingtong JT-208/JT-308
AHARS - JINGTONG JT-208 / 308 Short Form Users Manual
Common Features:-
• 30 Channels
• 3 operating modes
o Direct frequency entry via keypad
o Memory mode by channel number
o Memory mode by frequency
• Programmable repeater shift
• Programmable repeater offset
• Split frequency operation for Tx / Rx
• Selectable frequency steps of 5/10/12.5/25Khz
• CTCSS operation with 1 of 38 codes on Tx /Rx
• Inbuilt battery saver when muted
• External earphone & microphone operation.
General Specifications :-
• Frequency Range
• Voltage – 7.2V NiMH rechargeable battery
• Channels – 30
• Antenna Impedance 50 Ohms
• Modes – Simplex, Repeater, Split Tx/Rx
• TX Output Power 1.8 – 2.5 Watts
• Modulation FM =< 5Khz Deviation
• Spurious emission <-60dB
• Current on TX =< 600 mA
• Negative Ground
• Dimensions 100 x 50 x 30 mm
Power / Volume control :
Turn clockwise to switch on power, and adjust control for suitable volume level.
Mute Control :
Turn anti-clockwise to un-mute & clockwise to mute receiver.
LED indicator :
When unit is muted the LED is not lit, when receiving a signal the LED will be green and
in transmit mode will indicate red.
Setting Frequency Step size : (DF mode)
This function sets the size of the frequency step when using the up / down keys under the
LCD display. Before the step size can be set the unit needs to be in the 'direct frequency'
mode (DF) by pressing [SET] [1] (this should be the default).
To change the step size press [SET] [4] . Continue to press [4] and you will see the step
size changing in the following rolling sequence :-
Select the step size you require – the default 25 Khz will be adequate for setting most
repeater channels. When you have selected the required step size push [EXIT] button.
by Barry Williams VK5ZBQ 17/7/06
JT-208 136-174 Mhz
JT-308 400-470 Mhz
2
5
RX sensitivity < 0.16 uV (12dB Sinad)
Mute sensitivity < 0.2 uV
Mute sensitivity < 0.2 uV
Intermod rejection 50dB
Audio Power > 300mW
RX current =< 100 mA – muted 20 mA
12 1
5 0 5
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