News: Spectrum M1+ Kit Specification Upgrade
Group buy initiative - 192 KHz Spectrum for Under £99-
| Overview: The
aim of the group buy is to manufacture the electronics and software for
a DSP Spectrum kit at the lowest possible cost, yet include novel
features and the ability for user-programming with easy remote updates. The original specification included an Arm M4 Cortex 32-bit 80 MHz DSP processor SMT board with 256KB of program memory, 64KB of RAM, 12-bit sampling, and a 320x240 Touch LCD at £78.99. In contrast, the existing Spectrum M2 DSP uses an Arm M4 168 MHz MCU with 1MB of program memory, and 192 KB of RAM. Whilst this was the most economic solution, for an additional £20 we propose to increase the specification to include the latest Arm M7 Cortex 480 MHz DSP processor with 2MB of program memory, 1MB of RAM and 16-bit ADC sampling, which will provide significantly better screen updating, including streamed toAndroid Tablet or PC, and very sensitive DSP audio*. In addition this upgrade would benefit from a unified development platform with the Spectrum DSP M3, which also uses the same Arm M7 core. This would lead to firmware updates with advanced features such as interactive voice control and automatic station search. |
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Above: Configurable formats and USB/WiFi links
to larger screens |
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| Spectrum M1+ Kit
Specifications Arm M7 Cortex 480 MHz DSP processor, > 1020 DMIPS 2MB of program memory, 1MB of RAM 16-bit ADC hardware sampling, and 18-bit over-sampling* Spectrum bandwidth of 48/96/192 KHz and 384 KHz on PC over USB. USB bridge with virtual Com port to connect to PC for Spectrum & logging. Serial port connector for firmware debug and update. Audio channel requires a separate amplifier board. Designed to be fitted inside transceivers: no case is provided. Supplied with documentation and full support. Kit experience level: standard fine soldering skills. Build time: ~1-2 hours. Compatibility: Elecraft, Xiegu, Icom, Yaseu, Kenwood, Alinco, uSDX, QRP Labs and all radios with IQ signals. *16-bit sampling allows IQ signal resolution to below 17uV, under 0.2uV at the antenna dependent on pre-amplification, and exceeding the performance of most professional receivers; see here. Group buy price £98.99 - £1 deposits to join, remainder at start of build. |
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For further information please email us