Difference between revisions of "QRP Labs High Performance SDR Receiver"

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== Features ==
 
== Features ==
  
−
* This high performance receiver module uses a Quadrature Sampling Detector (QSD), also known as a Tayloe Detector
+
* Three modules
−
* The mixer is arranged as a double-balanced mixer for maximum performance
+
** Radio Module
−
* The receiver board has a socket for the standard QRP Labs Band Pass Filter kit
+
*** This high performance receiver module uses a Quadrature Sampling Detector (QSD), also known as a Tayloe Detector
−
* There is a transmit/receive switch onboard. Low noise LM4562 op-amps are used in instrumentation amplifier configuration to provide excellent common mode noise rejection
+
*** The mixer is arranged as a double-balanced mixer for maximum performance
 +
*** The receiver board has a socket for the standard QRP Labs Band Pass Filter kit
 +
*** There is a transmit/receive switch onboard. Low noise LM4562 op-amps are used in instrumentation amplifier configuration to provide excellent common mode noise rejection
 +
*** The audio output of the module is isolated using two 600:600-ohm transformers to reduce or eliminate the ground loop problems which can easily occur in SDR systems
 +
*** The module is designed to directly drive a stereo input sound-card
 +
*** The module is sized 80 x 37mm
 +
** Band Pass Filter
 +
*** Switched Bandpass filter board
 +
** Polyphase filter
 +
*** Polyphase network plug-in module kit which cancels the unwanted sideband and produces a single sideband (SSB) output
 
* The receiver requires a local oscillator (LO) input at 4x the receive frequency
 
* The receiver requires a local oscillator (LO) input at 4x the receive frequency
−
* The audio output of the module is isolated using two 600:600-ohm transformers to reduce or eliminate the ground loop problems which can easily occur in SDR systems
 
−
* The module is designed to directly drive a stereo input sound-card
 
−
** For those situations where a PC has only a mono input (many PCs are like this, particularly laptops), there is an optional polyphase network plug-in module kit which cancels the unwanted sideband and produces a single sideband (SSB) output.
 
−
* The module is sized 80 x 37mm
 
  
 
== Radio Links ==
 
== Radio Links ==

Revision as of 14:47, 20 November 2021

Rx bpf poly.jpg

Features

  • Three modules
    • Radio Module
      • This high performance receiver module uses a Quadrature Sampling Detector (QSD), also known as a Tayloe Detector
      • The mixer is arranged as a double-balanced mixer for maximum performance
      • The receiver board has a socket for the standard QRP Labs Band Pass Filter kit
      • There is a transmit/receive switch onboard. Low noise LM4562 op-amps are used in instrumentation amplifier configuration to provide excellent common mode noise rejection
      • The audio output of the module is isolated using two 600:600-ohm transformers to reduce or eliminate the ground loop problems which can easily occur in SDR systems
      • The module is designed to directly drive a stereo input sound-card
      • The module is sized 80 x 37mm
    • Band Pass Filter
      • Switched Bandpass filter board
    • Polyphase filter
      • Polyphase network plug-in module kit which cancels the unwanted sideband and produces a single sideband (SSB) output
  • The receiver requires a local oscillator (LO) input at 4x the receive frequency

Radio Links

Silkscreen

IQ RX PCB.PNG

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