Re: band changing anomaly

Kriss Kliegle
 

The Airspy Discovery doesn't go up to 70CM (440MHz), the upper limit is 260 MHz. You need to use the Airspy R2, that will give you from 24 - 1700 MHz.

Per the website:
https://airspy.com/airspy-hf-discovery/

Technical specifications

  • HF coverage between 0.5 kHz .. 31 MHz
  • VHF coverage between 60 .. 260 MHz
  • Sensitivity: -140.0 dBm (0.02 µV / 50 ohms at 15MHz) MDS Typ. at 500Hz bandwidth in HF
  • Sensitivity: -141.5 dBm MDS Typ. at 500 Hz bandwidth in FM Broadcast Band (64 – 118 MHz)
  • Sensitivity: -141.0 dBm MDS Typ. at 500 Hz bandwidth in VHF Aviation Band (118 – 260 MHz)
  • Linearity: +15 dBm IIP3 on HF at maximum gain
  • Linearity: +13 dBm IIP3 on VHF at maximum gain
  • Dynamic Range: 110 dB blocking dynamic range (BDR) in HF
  • Dynamic Range: 95 dB blocking dynamic range (BDR) in VHF
  • Selectivity: 150+ dB combined selectivity (hardware + software)
  • Image Rejection: 120 dB (software)
  • Filtering: Polyphase Tracking filters for close range interference suppression
  • Filtering: New High Performance Pre-selector for HF with 4 filter banks (corners at ~DC, 5, 10, 17 and 31 MHz)
  • Filtering: New High Performance Pre-selector for VHF (Air, HAM, Commercial and Military VHF)
  • Filtering: New High Performance Pre-selector for the FM band (Japan, US, EU, OIRT)
  • Up to 660 kHz alias and image free output for 768 ksps IQ
  • 18 bit Embedded Digital Down Converter (DDC)
  • 22 bit Resolution at 3 kHz channel using State of the Art DDC (SDR# and SDR-Console)
  • +10 dBm Maximum RF input
  • 0.5 ppm high precision, low phase noise clock
  • 1 PPB frequency adjustment capability
  • Very low phase noise PLL (-110 dBc/Hz @ 1kHz separation @ 100 MHz)
  • Best Noise reduction of the market using state of the art algorithms
  • 2 x High Dynamic Range Sigma Delta ADCs @ up to 36 MSPS
  • Single RF Input to cover all bands with High Linearity switching
  • Improved input matching down to virtually DC
  • Smart AGC with real time optimization of the gain distribution for Best SNR in all situations
  • No drivers required! 100% Plug-and-play on Windows Vista, Seven, 8, 8.1 and 10
  • Industrial Operating Temperature: -45°C to 85°C
  • Ultra small Form Factor: 45 x 60 x 10 mm
73 Kriss KA1GJU

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