HQT TH-2800 Manual

TH-2800 Turn up procedure
It can either use PC program software or manual tuning mode to debugging TH-2800.The
Following method is the latter one. (see"TH-2800 function" , manual tuning mode ）。

1. Equipment:

1． One comprehensive tester
2． One scanner
3． One 3A/10V power source
4． One digital voltmeter
5． One 3A Ammeter

2. User Mode

Press PTT key to transmit, speak to the microphone with normal voice. Please
keep 2.5 to 5 center meters away from your mouth and the microphone.
Release PTT key when receiving.

3. Mode Setting

1. Short-circuit two points of SELF on PCB，turn on the radio, LED flashes red and
green in turns.
2. Choose channel according to its model.
3. Manual tuning function and wired clone function will be switched on
automatically.
4. Press PTT key, then set the current chosen channel, system initialization starts.
Note:
Once the radio has been re-initialized, the pre-stored tuning data and channel
information (frequency, CTCSS/CDCSS) will be erased and some function may changes, too.
Therefore try to avoid this operation unless replacing E PROM and other necessary setting.
2

4. Wired Clone Mode

(1) Press SK2 key on the source radio to turn on it, LED will then flashes twice in red
in 2 seconds, which means the radio entered wired clone mode.
(2) The target radio needs to be enabled with clone mode by pressing PTT key while
the main radio is still in the clone mode. To disable the clone function of the target
radio, press [PTT] key again and the indicator flashes red twice. The clone
function of target radio is disabled as default.
(3) Press SK2 key on the source radio, when the red light starts to flash it means it is
in the process of clone. When it is finished the red light goes off. If it's failed, the
indicator flashes in green instead of red.
Note: The wired clone mode can be disabled through using programming
software.