Hermes Board:

 

 

Hermes Board mit aktiver FPGA Kühlung

 


Hermes has the following features and facilities:

  • Continuous, uninterrupted, receive coverage from 10kHz to 62MHz.
  • Supports Real-Time display of entire spectrum from 0-62MHz (with suitable PC software)
  • Supports 7 fully independent receivers (sharing the same antenna - and with suitable PC software)
  • Each receiver can display 48/96/192kHz/384kHz of spectrum
  • Blocking Dynamic Range (ARRL Method) - no detectable gain compression below ADC overload
  • Dynamic Range typically 125dB
  • 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
  • 500mW RF output on 160 – 10m amateur bands, 350mW on 6m
  • Built-in high performance preamp, with a noise floor typically -135dBm in 500Hz
  • Software-selectable 31dB input attenuator in 1dB steps
  • 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 (-140dBc/Hz @ 1kHz at 14MHz) 122.88MHz master clock,which can be phase-locked to an internal 10MHz TCXO or external frequency reference
  • 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

Nun ich denke mal wenn man diese Technischen Daten liest und auch mal mit einem solchen TRX in der Luft war versteht jeder warum ein normaler TRX kein Land mehr sieht.