Airspy HF

 

 

 


 

HF+ vs NetSDR

Introduction

September 28, 2017 Airspy has announced the HF+ as 'a paradigm shift in high performance HF radio design' and this is very true. The HF+ has a target price under $200. Here are some screenshots comparing the HF+ with the NetSDR which is arguably the best HF SDR available today and is the SDR of choice here in the SDR-Radio.com office.

The tests were made using a Wellbrook loop antenna, model ALA1530LNP. the antenna was connected directly to the receivers for tests on VLF and NDB, for higher frequencies a Stridsberg MCA104M antenna multicoupler was used.

Compare the screenshots and decide for yourself just how good the HF+ is.

Note: VHF screenshots for the HF+ will be added later.

  • NetSDR with ultra low noise reflock
  • Airspy HF+

 

Abuse

Here's the HF+ in action, located in the office / playroom / shack.

 

 



VLF / LF / HF Comparison

VLF

HF+

NetSDR

NDB

Non-directional beacons 310kHz to 440kHz.

HF+

NetSDR

40m CW

HF+

NetSDR

41m Broadcast

HF+

NetSDR

Weather Satellites

Overhead Pass

Here's an example of the HF+ receiving the NOAA 18 APT weather satellite, the antenna is a log periodic covering 130 MHz to 1.3 GHz.

Low Angle Pass

Here's an image from NOAA 18 but a much lower angle - 13 degrees. You see noise on the image, but nevertheless an excellent copy.