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 10 months ago

zanco commented 11 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 11 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 11 months ago

Understood Roman, thanks for the answer !