On 4/26/2023 11:17 AM, Richard Karlquist wrote:
Also, how did you arrive at 1836.6 kHz?
WSPR frequencies have been established since 2008, when the software was introduced. Typical power levels are 100mw - 1W. These signals have always been there, but we haven't noticed them. They can be decoded at SNR 15 dB below that of CW with great ops on both ends.
Why not say 1.990 MHz to avoid QRM.
Among other reasons, international frequency allocations and antenna bandwidth.
73, Jim K9YC _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
