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| 10m LPF |
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| 15m LPF |
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| 30m LPF |
Thursday, February 12, 2026
WSPR Transmitter
Below are images of three of the six filters (10m, 15m and 30m) showing the passband characteristic of each along with the corresponding sinusoidal output. The vertical gray bar indicates the transmission frequency range of each band.
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