Although international shortwave broadcasts are on the decline, DXing remains popular among dedicated shortwave listeners.
A more common form of QSL card for shortwave listeners to collect verifies the reception of signals from international broadcasting or utility stations.
Both stations were well received by shortwave listeners, but could not make the format successful in the long run.
The shortwave numbers station nicknamed "Atencion" by independent shortwave listeners has been linked to RHC radio transmissions equipment.
Although the Allied government provided similar services, the families usually heard from shortwave listeners first, sometimes as many as 100 at a time.
Others were dedicated shortwave listeners or DXers who maintained an ongoing interest in long-distance radio listening as a hobby.
It went on to say that since there was no assurance of the information's accuracy, the shortwave listeners might cause "needless disappointment and heartache."
SINPO code - code used to describe the quality of radio transmissions, especially in reception reports written by shortwave listeners.
Some estimates have placed the number of shortwave listeners worldwide in the millions.
There are estimated to be millions of shortwave listeners.