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's the difference between the ANAN-100D and the ANAN-200D? A. Here are some of the significant differences:
The 200D has a jumperless motherboard, so features and options are software selectable on the 200D where the 100D uses internal jumpers.
The 200D's Cyclone IV EP4CGX150 FPGA sports 150,000 Logic Elements vs the 100D's 115,000 logic elements, leaving room for future expansion.
The 200D has a predistortion feedback network built in, so you save the trouble of adding your own external loop
The 200D uses a more precise 100PPB reference clock
The 200D uses the Orion platform but only uses 2 at this time.(Although the Orion card supports three, a future item.)
Future projects are in the works for multiple computers being able to utilize the 200D at the same time.
Q. I'm not getting full power on all bands with my ANAN radio. What's wrong? A. Here are some tips:
The power output should be measured using an external watt meter terminated into a 50 ohm dummy load.
The power output should be measured using the Tune function and with Tune drive at 100%
Older supplies may have high frequency noise which may trick the voltmeter into not noticing the voltage drop during load.
The gain per band PA calibration will need to be done to achieve 100W on all bands
Check your voltage. Full TX power could draw nearly 35 amps and some power supplies, although rated for that much power may have a voltage drop below 13.8V that reduces the maximum power output of the radio.
Features
Key Features & Specifications :
Max power consumption: Approx 31amp at 13.8VDC on 6m at 100W
Cyclone IV EP4CGX150 FPGA - 150,000 Logic Elements
Two Independent phase coherent 16 bit LTC2208 Front Ends
Supports multiple Independent receivers covering 160M through 6M
160M - 6M All mode Transmitter (limited only by Software)
125dBm Receiver Dynamic Range (All Three Front Ends have identical Dynamic Range)
Supported sampling rates 48/96/192/384 kHz
1.152Mhz of display spectrum with .732 Hz resolution
Software-selectable 31dB input attenuators in 1dB steps
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
-48dB IMD3 @ 14.2Mhz, 100W PEP (with Puresignal enabled)
Automatic 10Mhz internal/external clock switching
Software controlled Mic, Mic Bias and PTT
Onboard 128MB Flash
Onboard 32Mbit Synchronous RAM
Industry Standard TCP/IP network Ethernet interface supports static, APIPA or DHCP IP address
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
Four user-configurable 12 bit analogue inputs (for ALC, SWR etc)
Three user-configurable digital inputs (for linear amplifier over temperature, etc)
Low phase noise (-140dBc/Hz @ 1kHz, 14MHz) 122.88MHz master clock, which can be phase-locked to an internal 10MHz 100PPB TCXO or external frequencyreference.
