JINGTONG JT-208, User Manual

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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
ƒ
JT-208 136-174 Mhz
ƒ JT-308 400-470 Mhz
•
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 RX sensitivity < 0.16 uV (12dB Sinad)
•
Modulation FM =< 5Khz Deviation Mute sensitivity < 0.2 uV
•
Spurious emission <-60dB Mute sensitivity < 0.2 uV
•
Current on TX =< 600 mA Intermod rejection 50dB
•
Negative Ground Audio Power > 300mW
•
Dimensions 100 x 50 x 30 mm RX current =< 100 mA – muted 20 mA
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 :-
Æ 2
5
Æ 12
5
Æ 1
0
Æ
5
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
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