Apache Labs ANAN-G2 User manual

ANAN-G2 Manual Page 1 of 35
openHPSDR
ANAN-G2
User Guide
OpenHPSDR radio
With Saturn SDR

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This document contains the words Apache, ANDROMEDA, SATURN, ANAN in reference to the
Apache Labs Transceiver products.
http://www.apache-labs.com
In cooperation with G8NJJ, N1GP,VK6PH, NRØV, W5WC, K5SO, LA2NI, and the OpenHPSDR
Hardware and Software Projects http://openhpsdr.org
All images and manufacturer data is copied here with permission of the owner Apache Labs
Note: Customer is responsible for FEDEX shipping and all local Customs, Tariff, VAT, Taxes and
incidental charges within their delivery [address] Country. Please contact Apache Support
[e-mail] for details regarding your order or shipping charges.
Apache Labs LLC, Inc. - Declarations of Conformity
The ANAN-G2 complies with FCC Part 97 rules for the Amateur Radio Service. It has been confirmed
by the relevant authorities that the ANAN-G2 DOES NOT require FCC certification. Under rule 97
Amateur radio equipment with the exception of amplifiers and scanning receivers are exempt from
certification, however, must conform to rule 97 which states that harmonic and spurious emissions
must be below 43dB of the transmitted out up to 30MHz and 60dB beyond that.
Apache Labs Products CE and RTTE Certified
CE & EC Radio and telecommunications terminal equipment [RTTE] Certification.
We are pleased to announce that the ANAN series HF & 6M SDR transceivers including ANAN-G2 is
now CE and RTTE certified as per EU trade directives, ANAN-G2 is RoHS compliant as well, we ensure
that our products are of the highest quality and meet international standards of quality and
compliance.

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Contents
Contents
1 Key Features.............................................................................................................................. 5
1.1 Benefits.............................................................................................................................. 5
1.2 Architecture....................................................................................................................... 6
1.3 Writing Style ...................................................................................................................... 7
1.4 SATURN Design Team......................................................................................................... 7
2 Controls and Connections .......................................................................................................... 8
2.1 Powering On and Off.......................................................................................................... 8
2.1.1 Radios with front panel controls................................................................................. 8
2.1.2 Radios with no front panel controls ............................................................................ 8
2.2 Touchscreen....................................................................................................................... 9
2.3 Front Panel Connections .................................................................................................. 10
2.4 Rear Panel Connections.................................................................................................... 11
3 Installation............................................................................................................................... 14
3.1 Important Operation tips ................................................................................................. 14
3.2 Heat Dissipation............................................................................................................... 14
3.3 Quick Start ....................................................................................................................... 14
3.4 Getting Started with piHPSDR .......................................................................................... 15
3.5 Getting Started with Thetis .............................................................................................. 16
3.6 Getting started with the Raspberry Pi............................................................................... 17
3.6.1 Desktop Environment............................................................................................... 18
3.6.2 Networking .............................................................................................................. 18
3.6.3 SSH Command Line Access ....................................................................................... 19
4 Linux Applications.................................................................................................................... 20
4.1 p2app............................................................................................................................... 20
4.1.1 p2app Command Line Options.................................................................................. 20
4.2 piHPSDR........................................................................................................................... 21
4.3 Desktop “Helper” Applications......................................................................................... 22
4.3.1 Flashwriter ............................................................................................................... 22
4.3.2 Audiotest.................................................................................................................. 23
4.3.3 Biascheck ................................................................................................................. 24
4.3.4 AXI ReaderWriter ..................................................................................................... 25
4.4 Pre-loaded software......................................................................................................... 25
4.5 Running Software Automatically after Power Up.............................................................. 26

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5 Connecting Accessories............................................................................................................ 27
5.1 Linear Amplifier................................................................................................................ 27
5.1.1 PTT Out .................................................................................................................... 27
5.1.2 ALC........................................................................................................................... 27
5.1.3 Puresignal................................................................................................................. 27
6 Specifications........................................................................................................................... 28
7 Maintenance ........................................................................................................................... 29
7.1 PC Maintenance............................................................................................................... 29
7.2 File Locations ................................................................................................................... 29
7.3 Software Installation........................................................................................................ 29
7.3.1 Driver and SATURN Linux Software........................................................................... 30
7.3.2 piHPSDR ................................................................................................................... 30
7.4 Reflashing firmware ......................................................................................................... 30
7.5 Replacing the File System................................................................................................. 32
7.5.1 Reflashing on-board eMMC memory ........................................................................ 32
7.6 Block Diagrams................................................................................................................. 34
8 Support ................................................................................................................................... 35
8.1 Warranty.......................................................................................................................... 35
8.2 References....................................................................................................................... 35

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1Key Features
The ANAN-G2 Amateur Radio Transceiver is a modern direct-down-conversion [DDC] receiver, and
direct-up-conversion [DUC] transmitter, Software Defined transceiver covering the HF bands plus 6
Meters. It uses the SATURN FPGA board with integrated DSP processing and a Raspberry Pi
processor. SATURN has a proud heritage from the TAPR Hermes Transceiver introduced in 2012. It is
based upon the established 7000DLE mk2 RF, DSP and Raspberry Pi single board computer.
SATURN firmware updates can be easily installed via running a simple linux desktop application,
eliminating the need for special mechanical or programming adapters. It is not necessary to open
the ANAN-G2 cabinet to update the firmware.
The ANAN-G2 transceiver has been designed to work with several client Software Defined Radio
applications. It can be used with:
•piHPSDR, running on the Raspberry Pi itself. piHPSDR was originally written by John Melton
G0ORX and developed further by Christophe Wullen DL1 YCF and Rick Koch N1GP.
•THETIS Software - the latest SDR processing from the OpenHPSDR line and is based on the
proven WDSP libraries. Thetis connects via the Ethernet interface, using the HPSDR
“Protocol 2” interface.
•Both have full support for dual receivers, antenna diversity and PureSignal TX linearization.
•Other SDR programs can be used including those written for Windows®, Linux, MacOS/X®,
Android, RaspberryPi, and other operating systems, using the HPSDR Protocol 2 interface.
1.1 Benefits
ANAN-G2 –Second to none!
•Using Direct Down Conversion with an ultra low phase noise clock yields an RMDR of 116dB
@ 2KHz separation, this means that close in weak signals will not be masked by the
receiver’s phase noise.
•The transmitter specifications are also off the chart, use of a new 16-bit DAC with an ultra
low noise clock source results in transmit phase noise better than any other product
available in the market.
•Use of LDMOS drivers and an optimized final Amplifier stage with adaptive Predistortion
Algorithm (PureSignal) yields transmit IMD of better than 60dB, this is at least 20dB better
than any Class A transmitter and over 30dB better than the competition.
•Use of two 16-bit phase synchronous ADCs allow for advanced applications such as Diversity
reception for ultimate noise mitigation and effects of signal fading.
•Higher FPGA DSP Processing power
•Hardware capable of Remote operation (Future feature set currently not available)
•Stand Alone operation
The ANAN-G2 HF & 6M 100W SDR Transceiver offers top of the line performance in a rugged
package, it is based on the work of the OpenHPSDR community.
The new PA board incorporates the following updates over the previous 100W generation:
•PA Gain redistribution for better IMD
•Thermally compensated Bias
•Current/Voltage/Temp Sensors
•Internal fan and option for external fan
•Independent BPFs and 6M LNAs for each ADC; option to ground ADC2 on TX
•Improved TX SNR and higher duty cycle TX

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1.2 Architecture
1. Your radio hardware provides a transmit/receive path. There are two fully separate RX paths
each with its own signal conditioning, digitising and processing.
2. Received signals are filtered, attenuated then digitised using two high performance
analogue-to-digital converter. The A-D converters cover the whole HF band. Digital
processing in the Field Programmable Gate Array (FPGA) converts a part of the HF band to
zero centre frequency, and transfers the data to the PC via Ethernet. The bandwidth
provided can be selected, but is usually in the range 48KHz –1.536MHz.
3. A Raspberry pi4 Compute Module provides a local, high performance processor. The Pi runs
desktop linux and can host many applications. A high performance PCI Express interface
moves data between the FPGA and the Pi.
4. A client Software Defined Radio application (for example piHPSDR or Thetis) connects to the
receiver data streams and provides further signal processing to reduce noise, to select the
signals of interest and demodulate them. Its user interface provides a view of the band
activity in the downconverted signal is shown, and controls to tune to the required signal
and demodulate it successfully.
5. Received audio is routed to the speaker connectors. Additional PC connected speakers are
also possible.
6. On transmit, the client application provides the initial signal processing to optimise the
transmit signal. Audio processing is available to enhance a voice signal. A CW keyer is
provided. Sampled data is sent to the radio hardware via PCI Express.
7. The radio hardware upconverts the TX signal to the required frequency, sets its signal level,
amplifies and filters it. Amplifier linearization is available: a sample of the signal from the

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linear amplifier is downconverted back through the receiver, and compared with the
“intended” TX signal. The difference is processed by Puresignal algorithm to apply pre-
distortion so that the final output from the linear amplifier has approximately 20dB lower
spurious signal content that a “normal” HF transmission.
1.3 Writing Style
In this manual:
•A control / setting name is highlighted bold
•The user setting for that control is underlined.
•Menu > Equalizer means open the “Equaliser” setting on the program’s menu
•Menu > Setup > DSP > RX2 means open the setup form using Setup on the menu, then select
the DSP tab, RX 2 sub-tab
So for example this instruction would indicate a gain control setting: Set the RX1 AF encoder to 30.
1.4 SATURN Design Team
SATURN is a new DSP board that draws upon previous work from the HPSDR family. Contributors to
its content include :
Laurence Barker G8NJJ
Rick Koch N1GP
Abhishek Prakash
Dr. Warren C. Pratt, NR0V
Kjell Karlsen, LA2NI
Phil Harman, VK6PH
Doug Wigley, W5WC
Dr. Joe Martin, K5SO
John Melton, G0ORX/N6LYT
Adam Farson AB4OJ/VA7OJ

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2Controls and Connections
The front panel provides the first port of call to control your radio. Two version of the radio are
currently available:
A version with no local display: this can be used
with attached monitors for locally hosted client
software such as piHPSDR. It can be used
“headless” to connect to a PC client application
such as Thetis.
A version with a front panel 7” touchscreen
display, rotary controls and pushbuttons. A
touchscreen display provides a PC display from
the PC control application; rotary encoders and
pushbuttons provide access to the most
commonly used controls.
A different display version using the
“Andromeda” display is also planned. This
panel has more controls, and hands off
processing for them to an Arduino
microcontroller to reduce the load on the
Raspberry Pi.
2.1 Powering On and Off
The radio has a “soft” power button on the front panel. This is used both to turn power on, and to
turn it off again. It is important to shut the power down properly using this button: otherwise the file
system in your Raspberry Pi computer will become corrupted. The controls are different depending
on whether you have front panel controls or not.
2.1.1 Radios with front panel controls
To power the radio on: press and release the button. A short press is sufficient. The power LED will
illuminate.
To power the radio off:
1. Shut down the operating system. In PiHPSDR, click Menu and then Shutdown. You may also
click on the Raspberry Pi icon at top left on the screen; select Logout from the menu then
Logout on the Shutdown Options menu.
2. After the computer has completed shutting down, wait for approximately 10-15 seconds and
then press and hold the power button for around 3 seconds until the power switches off.
The front panel LED will go out.
2.1.2 Radios with no front panel controls
The procedure is slightly different as you may not have a computer display available.
To power the radio on: press and release the button. A short press is sufficient. The power LED will
illuminate RED.

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To power the radio off: press and release the power button. The LED will change to WHITE when the
computer has shut down. Wait for approximately 10-15 seconds and then press and hold the button
for around 3 seconds until power turns off completely; the LED will extinguish.
Power switch with Raspberry Pi running
Power switch with Raspberry Pi Off
2.2 Touchscreen
The touchscreen, on those models with front panel controls, is a full function display with capacitive
touch sensing. This is a full function Linux desktop; see Raspberry Pi documentation for more details.
With an attached mouse and keyboard, it presents a full function desktop computer. Additional
displays can be connected to the rear of the radio using HDMI connectors.
The front panel display can provide the front panel display for piHPSDR. In this mode it presents the
front panel for your radio, allowing completely standalone operation.

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2.3 Front Panel Connections
CW Key
3.5mm stereo jack socket. Connect a CW (morse) key: this may be a “straight” key
or iambic keyer. Do not use a mono jack plug: TX mode will be continuously
asserted!
Phone
Connect stereo headphones. This is a standard 3.5mm stereo jack socket. The
internal speakers will be muted when connected.
MIC
3.5mm stereo jack socket.
USB
A USB socket connected to the Raspberry Pi; useful to connect memory sticks etc.
CW Key
Tip = Dit
Ring = Dah
3.5mm Stereo Jack:
Paddle Connections
Tip = Key
Ring = no connect
3.5mm Stereo Jack:
Straight Key Connections
Microphone
Can be set
by your SDR
app to two
possible
connections:

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Use the “audiocheck” desktop app to test your microphone connection.
The microphone carries both microphone audio and PTT signals. Your DSP program (for example
piHPSDR or Thetis) has controls to select how the signals are connected.
•PTT, if enabled, is achieved by connecting the PTT input to Ground
•A DC bias for the audio signal –needed by condenser “electret” microphones –can also be
selected by your client app.
We are aware that some, but not all, PC headsets suffer loss of signal level when connected, because
of the PTT connection. Using an external cable to “break” the wire to the ring will eliminate this.
2.4 Rear Panel Connections
RF
GND
RF earthing stud
ANT 1 - 3
3 independent TX & RX1 Antenna connectors
RF Bypass
RX input bypassing RX filtering. Puresignal feedback input for an external
PA
EXT1
RX input bypassing the T/R switch
XVTR In
Transverter RF input
ADC2
RX2 Antenna input
XVTR
Low power TX signal to Transverter
10MHz in
10MHz reference input
Power
13.8V DC
PowerPole® 13.8V DC, 30A power supply input
Raspberry
Pi
Wi-Fi
Connection to the Wi-Fi antenna connector on the Raspberry Pi computer.
USB
USB2 Type A connectors. A keyboard and mouse can be connected.
LAN
Gigabit ethernet connection: connect to a PC to use Thetis, either directly
or via your network.
HDMI 1, 2
Full function HDMI outputs to connect external displays. Either connector
may be used.
Aux
Radio
OC Out
7 user configurable Open Collector Outputs
Dig In
A 3.5mm jack with User digital inputs 1 & 2
Dig in 1: can be used as active low TX Inhibit
Dig in 2: not currently supported
Line in
A 3.5mm jack with Left and right TX audio line inputs

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PTT In/Out
A 3.5mm jack with connections for PTT in(for example allowing an external
PTT switch) and PTT out (for example to key an attached linear amplifier).
PTT Input: short this signal to ground to initiate PTT PTT output: grounded
if TX active (eg to key external equipment)
L SPK, R SPK
Connection for left and right speakers
XLR
Input for a balanced microphone
CW Key
Duplicates the front panel CW key input
HP
Duplicates the front panel headphone input.
Mic
Duplicates the front panel microphone input
If you have a radio with front panel display, then the CW key, headphones and microphone
connections are duplicates of those on the front panel.
CW Key
3.5mm stereo jack socket. Wiring as described for the front panel connection.
Phone
Connect stereo headphones. This is a standard 3.5mm stereo jack socket.
MIC
3.5mm stereo jack socket. Wiring as described for the front panel connections.
Rear panel
speaker
connectors
External speakers should be wired
between Speaker + and Speaker -.
Use 4Ω or 8Ω, at least 2W speakers.
Open collector
pinouts:
1: GND
2: REF
3: OC7
4: OC6
5: OC5
6: OC4
7: OC3
8: OC2
9: OC1
GND = 0V
OC1-OC7 are separate open collector
outputs. Each connects to 0V when active.
REF should be connected to the highest
supply voltage used by OC1-OC7 (typically
5V or 12V)
PTT
In/Out
Connections for both PTT in and PTT out
are provided using a 3.5mm jack plug.
PTT in: connect to ground to enable PTT
PTT out: this signal is grounded when in
TX; use for keying linear amplifiers etc

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Balanced
Microphone
A connection for a balanced
microphone input is available.
This uses a 6.3mm jack on the
radio, and a cable can be made
to connect to an XLR socket.
If you have a balanced microphone terminating in an XLR plug, you will need to make a cable to an
XLR socket. Wire pin 1 to Ground, pin 2 to Mic+ and pin 3 to Mic-
Dig In
(two digital
inputs)
CW Key: if connected to
ground, this will key the TX
when in a CW mode
TX Disable: when connected to
ground, this will signal to your
SDR client app to request TX
disable. (In Thetis, this input
has to be enabled in the Setup -
> TX menu).

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3Installation
3.1 Important Operation tips
Do not cover rear or bottom ventilation holes. Proper air circulation throughout the ANAN-G2
Transceiver is necessary to prevent possible overheating and failure.
The radio is factory calibrated to 100W into a 50 ohm Dummy Load. Operating at higher levels will
damage the radio. Please review CCW and ICAS specifications.
Data/AM/FM and other continuous duty modes must be operated at 30W or less to remain within
the operational limits of the radio.
Input voltage must be 13.8vdc +/- 5%, well regulated at 30A Peak and proper POLARITY must be
observed.
DISCONNECT the Antenna during Thunderstorms or when not in use.
Please ensure that you select the correct hardware model during software setup: ANAN-G2 100W.
Install the supplied rubber feet on the bottom of the case for proper cooling.
3.2 Heat Dissipation
ANAN-G2 uses a heavy duty Aluminium heat sink to dissipate heat with temperature controlled
internal and optional external fan.
ICAS [100W] operation
SSB, CW and all ICAS modes [Intermittent Commercial/Amateur Service] 100W PEP
The Power Amplifier MOSFET transistor has characteristics that far exceed the needs of normal
Transceiver operation.
3.3 Quick Start
Make sure that you have the following equipment and accessories:
•A 13.8v 30A Power Supply
•50 Ohm Dummy load capable of at least 100W load capacity
•DC Power Cable (Supplied)
•Optional Keyboard/Mouse (either USB or Wireless)
With the Radio switched off:
1. Connect the Keyboard/Mouse to one of the USB ports, if required
2. Connect the DC power cable to the PowerPole connector. Please ensure that the RED side
corresponds with the Positive supply.
3. Connect the Dummy Load to the ANT1 connector.
4. Connect an ethernet network cable from the rear panel network connector to your home
network.
5. Switch on the Radio: you should see the power button light up and then the internal PC
booting. Once linux boots and is ready you are ready to launch your SDR client application
(see next sections).
6. Once you have tested basic functionality you may remove the Dummy load and connect the
Antenna ensuring good SWR before you are ready to go on Air!
It is possible to connect additional external displays if required using the rear HDMI connectors.

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3.4 Getting Started with piHPSDR
piHPSDR will automatically launch on startup on the G2 with Display. If you have a radio without a
front panel display, you can still run it but you will need an attached monitor, mouse and keyboard.
Double click the piHPSDR icon
1
. The program will find the available radio hardware and display a
selection form. Click “Start” on the tab showing a connection via XDMA:
If you have a front panel controller, it is configured using the drop-down box marked “no controller”
here. Select G2 Front Panel
When you click Start, piHPSDR begins execution!
1
If you don’t have that icon, see section 7.5.2

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There is a manual for piHPSDR in its software repository here:
https://github.com/n1gp/pihpsdr/tree/master/release/documentation
Note that piHPSDR does not currently have a dialog setting for microphone bias, but it can be turned
on. To enable bias:
1. Run piHPSDR for at least the first time, then exit.
2. Open the file browser from the taskbar.
3. Go to folder /home/pi
4. Find the “xxxxx.props” file.
5. Right click it and select a text editor (eg Geany)
6. Select Search -> Find…
7. Type bias and press Next
8. Edit the line to read mic_bias_enabled=1
9. Select File -> Save and exit your editor
10. Re-run piHPSDR
3.5 Getting Started with Thetis
To use Thetis, you will need your radio connected to the same network as the PC you will run Thetis
from. You can use your pi’s web browser to check the network connection first.
Once your radio is running (from the steps in section 3.3) you are ready to run Thetis.
1. On the G2 with display, close piHPSDR and launch the p2app from the desktop by double
clicking on its icon.

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If you get this screen,
select Execute in
Terminal
(if you want to remove this warning see section 3.6.4)
P2app running in a
terminal window looks
like this:
2. On G2 with NO display this does not need to be done and the p2app will launch
automatically on startup.
3. Start Thetis as normal on your chosen PC
4. Click Setup -> HW Select on the menu.
5. Select Radio Model to Anan-G2
6. Click OK
7. Start Thetis using its on/off button. It will discover and connect to your radio.
There is a manual for Thetis available here:
https://apache-labs.com/download_file.php?downloads_id=1020
3.6 Getting started with the Raspberry Pi
In normal use you will not need to interact much with the Raspberry Pi. However it is a full desktop
computer and you may want to make use of its features from time to time.
The easiest way to do this is with a keyboard, mouse and monitor. If you have a radio with front
panel display, it should already be displaying the Raspberry Pi desktop. If you don’t have a front
panel monitor, plug a PC monitor into one of the two rear panel HDMI connectors. It is also possible
to interact with the operating system using a command line interface through a network connection,
but this is only for those that like command lines!

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3.6.1 Desktop Environment
With a monitor connected, there is a standard desktop environment. You use mouse and keyboard
in the conventional way. On the desktop there is a command prompt, and a file manager window.
Along the top of the screen is the status bar with several icons:
Opens a menu with tabs for a number of pre-loaded programs.
The “preferences” menu allows access to a number of configuration options
There is a “logout” icon on this menu for safe shutting down.
Opens a web browser.
Opens a file manager window.
Opens a command prompt window
Bluetooth options
Network connections. Hovering over this icon gives a summary of connections. Clicking
n it allows you to choose a WiFi access point to connect to.
Adjust computer system volume. Does not affect audio from the radio if connected to
the rear panel speakers, or to the headphone sockets.
Shows the time. Double clicking shows a calendar
3.6.2 Networking
If you have plugged your radio into an ethernet connection: it will have been allocated an IP address
automatically and will be visible on your network. If you have not plugged it in, you may be able to
establish a WiFi connection. WiFi is NOT recommended for use with PC SDR client applications such
as Thetis.
The Raspberry Pi website provides some documentation on setting up your network:

ANAN-G2 Manual Page 19 of 35
https://www.raspberrypi.com/documentation/computers/configuration.html#configuring-
networking
There are many other website will provide help with this.
https://www.seeedstudio.com/blog/2021/01/25/three-methods-to-configure-raspberry-pi-wifi/
https://stevessmarthomeguide.com/configuring-networking-raspberry-pi/
3.6.3 SSH Command Line Access
There is a tutorial on setting up command line access:
https://raspberrypi-guide.github.io/networking/connecting-via-ssh
3.6.4 Suppressing Warning When you Execute Programs
It is simple to remove the warning when you double click desktop icons:
1. Open your file manager from the taskbar
2. Select Edit -> Preferences -> General
3. Tick Don’t ask options on launch executable file
4. Press Close

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4Linux Applications
ANAN-G2 is supplied with some linux applications that may be useful to you. These have been
developed by the open source developer community. You may install further programs as you need
them.
4.1 p2app
p2app is a command-line application that presents a “protocol 2” interface to PC client applications
such as Thetis. p2app is a “middleware” program: it reads samples from the receiver and sends then
to the remote client; it received transmit samples and sends then to the transmit hardware. It
provides audio in and out, and manages all of the register settings to control the radio hardware.
p2app is pre-installed. If you have an ANAN-G2 without front panel, it will be loaded automatically
after power up. That means you can simply power up the radio hardware, and once the operating
system is running you can run Thetis. Thetis will discover the connection to the radio across your
network automatically.
If you need to run p2app you need to use a linux command line. Note that this is case sensitive!
Open a command window giving you a linux prompt. Then type:
•cd github/Saturn/sw_projects/P2_app
•./p2app
The program will start, and display the software and FPGA firmware version information.
4.1.1 p2app Command Line Options
To run for normal use:
./p2app
Or it can be run as ./p2app <optional arguments>
Where <optional arguments> can be:
-f <freq in Hz> Turns on DDC test frequency source for development
-i saturn Identifies board as “Saturn” (default)
-i orionmk2 Identified board as “Orion mk 2”
-m xlr selects XLR microphone input
-m jack selects 3.5mm microphone jack (default)
-s skip checking for “x” button to exit (used when run at startup)
To exit: type x<enter>
(note no text is displayed as you type; just do it!)
The most likely command line option is to select the balanced XLR input. Options to select this from
the client application have not yet been implemented. To run p2app with XLR selected, type
./p2app -m xlr