XIEGU G1M User manual

XIEGU
G1M
HF Four Band Portable SDR Transceiver
Operation Manual
V2.0- beta ver
G-CORE

1
The new generation G1M (SDR version) is a 5W portable QRP model with SDR structure. Its core is based on
16bit-CODEC sampling and has excellent performance. The newly added AM broadcast reception capability allows
you to listen to news broadcasts from around the world; the 800Hz narrowband CW digital filter makes transmission
easier and clearer.
As an entry-level SDR portable, G1M (SDR version) will provide you with as many new technology experiences
as possible.
Basic Features:
High performance SDR core circuit design
New spectrum display function
Added AM broadcast receiving mode
Added CW Trainer function (supports full insertion)
Adaptive speech noise reduction
HF continuous reception
Support for amateur data communication
Support computer online control

2
In order to better experience the Rig, please read this manual carefully before use to fully understand the operation
of G1M.

3
1 Power switch / volume
○Rotate the switch to turn the device on or off;
○After turning the power on, turn the switch knob
to increase or decrease the volume of the
device.
2 MIC interface
External mic interface
3 Multi-function button
Menu functions for the screen;
4 LOCK Lock button
○Light press this button to switch the current menu
page；
○Hold press the button for 2s to lock the button
operation.
5 Display screen
OLED Display screen
6 Frequency knob
○Rotate this knob to change the current
frequency value；
○Light press this knob to turn the current
function menu.
1
2
34
5
6

4
7 Antenna interface
BNC model，impedance 50Ω。
8 ACC interface
Output band voltage signal and PTT signal. See below.
9 COMM interface
PC Communication interface / firmware upgrade interface
10 KEY interface
This interface is a 3.5mm stereo jack (3-pin) for
connecting manual or automatic telegraph keys.
11 SPK External speaker interface
This interface is a 3.5mm stereo jack (3 cord) for
connecting external passive speakers. The interface
definition is as follows.
12 DC IN external DC power interface
This interface is a 5.5*2.5mm DC power socket.
13 Grounding screw nut
Ground connection for equipment.
13
12
11
10
9
8
7

5
1、MIC
Note: The MIC pin has a bias voltage and cannot be
shorted.
2、COMM
3、SPK
4、ACC
5、Telegraph key lead connection method:
TXD
RXD GND
音频信号
音频信号 GND
M IC
PTT GND
波段电压
PTT GND

6
The G1M can use a 13.8V external DC power supply. The DC power supply has a current load capacity of at least 3A. The supplied
power cord can be used to connect radio and DC power.
When connecting the DC power supply, please carefully connect according to the following figure to avoid the polarity of the
power supply being reversed.
The white core wire is connected to the positive pole of the power supply, and the metal
shielded wire is connected to the negative pole of the power supply.
白色线
金属屏蔽线
PO W ER SU PPLY
V O LT A D J
+
-
ON
O FF

7
When the G1M uses an external power supply, in order to prevent external interference from entering the radio through the
power line, and radio frequency interference in the radio radiates outward through the power line, an EMC magnetic ring can be placed
on the power line. Install the magnetic ring as close as possible to the side of the power plug.
When using an external power supply, carefully check the polarity of the power cord to
prevent the polarity from being reversed.
The limited warranty of this radio does not include damage caused by an external power
connection error, or damage caused by abnormal power supply voltage.。

8
The G1M uses the multi-function menu mode for various functions to be used or turned off. All functions are distributed in different
menu pages, and each menu has 5 function options.
The operation is as follows:
Light press the main knob to switch the four-page menu in turn.
The five multi-function buttons at the bottom of the screen correspond to the displayed function menu.
multi-function buttons
main knob

9
Light press the "lock" button to switch the menu page.
Hold press the "lock" button to lock the button operation
Menu
page
Button mode Features
1
MD B- B+ TS A/B
Light press Mode switching Band subtraction Band increase Step bit selection VFO switching
Hold press
Preamplifier
switch Channel storage Clear channel Step back 1 bit Frequency/channel
mode switching
2
KS KM IMB QSK CSN
Light press
Automatic key
rate setting
Auto key mode
setting Iambic A/B select QSK switch Boot call setting
Hold press / CW Sidetone rate
setting Code ratio setting QSK time setting /
3
SCL DIS SPL BP /
Light press
Spectrum SCALE
setting
Display mode
selection
Different
frequency setting
System tone
switch /
Hold press / / / / /

10
The G1M uses an OLED display screen that displays all status information for the convenience of the user. The visual effect in outdoor
sunlight is also very good.
NOTE：收发状态：Transmission status；工作模式：Operating mode: 工作频率显示区：Working frequency
display area；工作状态显示区：Work status display area；频谱 /菜单区：Spectrum / menu area

11
Connection to a computer
The G1M can be connected to a computer and controlled with the associated software.
Connection cable method:
1. Install the driver for the data cable on the PC side.
2. Plug the data cable into the COMM port and connect the G1M to the computer.
3. Run the corresponding computer software.
When using software such as HRD, G1M must be in VFO mode
， cannot be in channel mode, otherwise it will not be able to
connect.

12
Computer control instruction
G1M uses the standard CIV instruction set. You can use the standard
instructions of this instruction set to remotely control the transceiver.
You can also configure the control instructions of other software to control
the G1M.
Band voltage data
G1M's ACC port provides band data for four bands. The band data can control the peripheral device to automatically switch the band or
share the band information with other devices.
Band Voltage Band Voltage Band Voltage Band Voltage
3.5MHz 460mV 7MHz 920mV 14MHz 1380mV 21MHz 1840mV
In the other frequency bands except the above four amateur bands, the band voltage is uniformly outputted at a high level, 5V.

13
Parameters
Receiving frequency：0.5～30MHz（Continuous）
Transmitting frequency：3.5～4.0MHz
7.0～7.3MHz
14.0～14.35MHz
21.0～21.45MHz
Operating mode：SSB/CW/AM(AM Used only to receive broadcasts)
Receiving sensitivity：0.45uV @12dB SINAD
Transmit power：5W @13.8V DC
Spurious suppression：≥45dB
Frequency stability：±1.5ppm （30 minutes after turning on the power）
Audio output power：0.5W
Operating Voltage：12～15V DC
stand-by current：0.5A @Max
Transmitting current：2.5A @Max
Case size:：97*40*155 (mm)

14
Standard packing items
G1M：1 PCS
mic：1 pcs
POWER CABLE：1pcs
User manual：1pcs
Certificate：1pcs
Warranty Card：1pcs

15
Copyright 2018
Chongqing Xiegu Technology Co., Ltd. reserves all rights to this manual, and reproduction of any
part of this manual is prohibited without permission.
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V2.0
1010160206-C