We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissable in your locale.

Author Topic: The AirSpyHF+ Discovery, Crossed Parallel Loop Antenna, and WWVB  (Read 1420 times)

Offline ChrisSmolinski

  • Administrator
  • Marconi Class DXer
  • *****
  • Posts: 24428
  • Westminster, MD USA
    • View Profile
    • Black Cat Systems
I ran a fun test this morning, circa 1430 UTC. I connected the AirSpyHF+ Discovery to my 2m by 2m Crossed Parallel Loop Antenna, reference this post https://www.hfunderground.com/board/index.php?topic=38963.0

Note that the antenna no longer has a preamp and is now passive, and is on a rotor.

The combo does a great job of receiving WWVB and is quite directional.  I am about 1,600 miles from WWVB.

Inserting a 400 kHz low pass filter helps things a little, presumably that allows the Discovery to run at a higher gain?

Video here: https://www.youtube.com/watch?v=UzTuU_l8yyc&feature=youtu.be
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 670 ft horizontal loop / 500 ft northeast beverage / 58 ft T2FD / 120 ft T2FD/ 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop / Discone in a tree

Offline dxace1

  • Hero Member
  • *****
  • Posts: 964
  • Potomac MD
  • eQSLs much appreciated to: dxace1@gmail.com
    • View Profile
    • Email
Re: The AirSpyHF+ Discovery, Crossed Parallel Loop Antenna, and WWVB
« Reply #1 on: August 23, 2019, 1519 UTC »
Great video thanks -- I am happy to have the Discovery like others who have received it recently.   Hope to do some testing with it...
Listening to European stations via European SDRs (except when indicated)  eQSL to:  dxace1@gmail.com

Dan in Potomac, MD (USA): Skanti R-8001, WJ 8718A/MFP, JRC NRD-630/301A/93, NRD-545/515, Drake R8B/8, RFT EKD-515, Collins HF-2050, McKay Dymek DR33-C6, AEG 1830/3, RA-1792, Cubic 30