Error in 17 m dial frequency ?

RPiks / pico-WSPR-tx

WSPR beacon for Raspberry Pi Pico, based on pico-hf-oscillator library. It doesn't require any hardware - Pico board itself only.

MIT License

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Error in 17 m dial frequency ? #8

Closed zanco closed 8 months ago

zanco commented 8 months ago

Hi, In the "quickstart" at number 7 you mention:

"Initialy the operating HF band is 17 meter (WSPR dial frequency is 18106 kHz)."

I think that should read 18104.6 kHz ?

Ben - PE2BZ

RPiks commented 8 months ago

Hi Ben,

Sorry for the belated answer, but I really had the hands full.

The frequency of 18104.6 kHz can be set in wsjt-x or jtdx terminal as dial frequency. However, please look at the wsjt-x's spectrogram carefully: the range of WSPR emission is 1400...1600 Hz. So, you cannot set the TX frequency of your beacon below 18104600 + 1400 = 18106000 Hz. Therefore, the pure dial frequency of WSPR beacon of 17 meter band is 18106 kHz.

With best regards, Roman R2BDY

zanco commented 8 months ago

Understood Roman, thanks for the answer !