Adaptive Predistortion for a Super Clean transmitter on the ANAN
The quest for a clean transmitter requires one to either operate in very inefficient Class A mode (at reduced efficiency and power outputs) or invest in a 50v Mosfet design which provides a 10dB improvement in IMD in the best case scenario.
The ANANs has been designed from the ground up to use modern digital predistortion algorithms to mitigate and reduce the IMD created in the transmitter, 50dB IMD3 has been achieved using Dr Warren Pratt’s (NR0V) revolutionary new WDSP engine which implements adaptive predistortion (PureSignal) winner of the 2014 ARRL Technical Innovation Award.
Exceptional transmitter output linearity has been achieved, the results are astounding and far superior to any other Amateur radio transceiver available in the market today.
Diversity Reception
The ANAN-100D and the ANAN-200D can be used for Polarization diversity operations (using two ADCs) to remove QRM and noise far more efficiently than any noise blanker can, Diversity reception is also used to mitigate Faraday Rotation effects and to remove polarization misalignment effects during Rx.
THE ANAN SDRs WILL WORK ON A MULTITUDE OF SOFTWARE PLATFORMS
SUCH AS :
The OpenHPSDR flavours of PowerSDR
cuSDR
Kiss Konsole
GNURADIO- OpenHPSDR
John Melton's (G0ORX/N6LYT) android
application for The OpenHPSDR hardware
GHPSDR3, GHPSDR3-QT
Frequently Asked Questions
Q. Is an Apache Labs radio right for me? A. The Apache Labs software defined radios are built and designed for highly technical operators with a moderate amount of computer and networking experience -- not "appliance users." They are on the cutting edge of radio technology and the radios are continuously improved through user feedback. An Apache Labs radio is right for you if: 1) you are looking for the highest performance and latest technology; 2) you are an experienced radio operator with computer experience; 3) you're willing to work through the resources provided by the Apache Labs community at Yahoo Groups; and 4) you understand the nature of cutting edge technology includes frequent firmware updates and hardware revisions to stay on the cutting edge and to address issues as they are uncovered.
Q. Are Apache Labs radios warrantied and supported just like any other ham radio? A. No. To begin with, the Apache Labs warranty is 2 years -- twice as long as most radio manufacturers. Also, since there's really no interface for this radio aside from third party software, there's not a whole lot to "support." There is a US service center for Apache Labs products should something fail, but most of the time user issues can be resolved with advice from the community, software patches, or firmware updates. Click here for GigaParts' warranty for Apache Labs products.
Q: What is the difference between the Flex 1500 and the ANAN-10? A: Here are some of the significant differences between those two radios:
Flex 1500 has only 1 receiver (48kHz wide). The ANAN-10 has 4 receivers and each receiver can display up to 1152kHz of spectrum!
On the Flex 1500, software options are limited to PowerSDR, but the ANAN-10 is open source and there is a lot of software available.
The Flex 1500 is based on an
older SDR design several generations old while the ANAN 10 is much more
current.
The ANAN-10 has 3 antenna inputs, versus a single antenna port on the Flex
1500
Flex 1500 mds IS -116 vs ANAN-10 -138
The Flex 1500 uses a USB interface while the ANAN-10 uses a Gigabit ethernet interface.
Features
Specifications & Highlights:
Continuous, uninterrupted, receive coverage from 10KHz to 55MHz.
Supports Real-Time display of entire sectrum from 0-55mHz (with suitable PC software)
Supports 7 fully independent receivers (sharing the same antenna - and with suitable PC software)
Each receiver can display 48/96/192/384/1152kHz of spectrum
Blocking Dynamic Range (ARRL Method) no detectable gain compression below ADC overload
Transmit and receiver image rejection > 110dB
Full duplex operation, any split over entire 160m to 6m range.
Transmitter two-tone 3rd order IMD of -50dBc on 20m @ 400mW output
Built-in high performance preamp, with a noise floor typically -135dBm in 500Hz
Software-selectable 31dB input attenuator in 1dB steps
High performance receiver – same specifications as the HPSDR Mercury receiver (ie Dynamic Range typically 125dB)
FPGA code can be updated via the Industry Standard TCP/IP network Ethernet connection
Seven user-configurable open-collector outputs, independently selectable per band and Tx/Rx (for relay control, etc - with sequencing via PC code)
Separate open-collector PTT connection for amplifier control, etc, with sequencer
Microphone PTT jumper-selectable from tip or ring connection
Bias for electret microphones via jumper
Four user-configurable 12 bit analogue inputs (for ALC, SWR etc)
Three user-configurable digital inputs (for linear amplifier over temperature, etc)
Can operate from a 13.8v DC supply or 12v and 5v supplies
Jumper selected in-built low noise and high efficiency switch mode power supply designed by Kjell Karson,LA2NI – less than 600mA (receive - one receiver) from a 13.8V supply
I2C bus connector for control of external equipment
Full QSK operation (performance dependant on associated PC and control software)
Low-level transmitter output for transverter use via user-selectable output attenuator
Stereo audio outputs at line and headphone levels
In-built 1W stereo audio amplifier for directly driving speakers
Direct, de-bounced connections for a Morse key (straight or iambic) and PTT
Low phase noise (-137dBc/Hz @ 1kHz) 122.88MHz master clock, which can be phase-locked to an internal 10MHz TCXO or external fequency reference
Low phase noise (-140dBc/Hz @ 1kHz at 14MHz) 122.88MHz master clock, which can be phase-locked to an internal 10MHz TCXO or external frequency reference
Direct ribbon cable interface to Apollo 15W power amplifier, low pass filters and automatic ATU
Industry Standard TCP/IP network Ethernet interface supports static, APIPA or DHCP IP address
Hermes responds to ping and ARP requests and auto senses network connection speed
Eight (8) Layer PCB design for the most professional, state-of-the-art, design available.
Custom build rugged Extruded Housing for Hermes and the PA (note: no ventilation holes required in .mil style designs)
Mosfet 10W Linear amplifier (160M-6M) gives 15-20W out on HF and 10-15W on 6M
LPFs for the PA harmonic suppression and receiver filtering
Software Configurable Triple antenna ports
SWR Bridge, enables Forward and Reverse Power plus SWR to be displayed using suitable PC software.
T/R, LPF Switching using mechanical relays (gold plated contacts)
Reverse Polarity protection with resettable fuse
All cables, Hardware and instructions to make a complete transceiver with Hermes
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