Reference quiet field reception - VK3QN

The geomagnetic field has again been dead quiet (Kp=0) over the past day, affording a useful opportunity to create a 14MHz reference WSPR reception curve for VK3QN, beaming 130 long path to Europe.

Dead quiet field.

 

14MHz reception of VK3QN, WSPR (5W).  TX: fixed 12 ele (130 degrees).  RX: vertical delta loop.

The first peak at around 06:30UT is when I have just emerged into the greyline, with VK3 still in afternoon daylight, and represents the longpath signal:

06:30UT  Image: DX Atlas, with permission.

The second peak about 09:00UT is when VK3 goes into his evening greyline.  Proppy HF shows that this situation is most likely to be a weakening long path signal, supplemented with a fair degree of shortpath leakage from the back of the beam:

09UT

The irregular, weakest peak at 11-12UT is now probably solely shortpath leakage from the rear of the large 12 element array.  At 12:40UT, the signal from VK3QN is lost altogether:

12UT