Key Features; Benefits - Apache Labs ANDROMEDA ANAN-7000DLE MKII User Manual

1 Key Features
The ANDROMEDA/ ANAN‐7000DLE MKII i5/i7 Amateur Radio Transceiver is a modern direct‐down‐
conversion [DDC] receiver, and direct‐up‐conversion [DUC] transmitter, Software Defined HF
transceiver plus 6 Meters. ANDROMEDA has a proud heritage from the TAPR Hermes Transceiver
introduced in 2012. It is based upon the established 7000DLE mk2 RF, DSP and PC, plus an integrated
front panel with radio controls and touch screen display.
The ANAN‐7000DLE MKII i5/i7 model is without the Andromeda front panel, it is capable of being
upgraded with the Andromeda Front panel. This model supersedes the previous Integrated PC
ANAN‐7000DLE MKII and includes a number of improvements and upgrades to the hardware.
ANDROMEDA firmware updates can be easily installed via the radio's standard Ethernet connection,
eliminating the need for special mechanical or programming adapters. It is not necessary to open
the ANDROMEDA cabinet to update the firmware. A "Bootloader" switch has been added to the
back panel of the ANDROMEDA for ease of future updates.
The ANDROMEDA transceiver has been designed for the THETIS PC Software Defined Radio program.
THETIS has the latest SDR processing from the OpenHPSDR line and is based on the proven WDSP
libraries. It has full support for dual receivers, antenna diversity and PureSignal TX linearization.
However, other SDR programs could be used including those written for Windows®, Linux,
MacOS/X®, Android, RaspberryPi, and other operating systems. The command interfaced to the
front panel uses simple published CAT commands and other programs could be adapted to support
it.
1.1 Benefits
ANDROMEDA – 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.
The ANDROMEDA 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

Temperature controlled 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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