New Equipment! QRPGuys EZ-WSPR Pi

Back in January of this year (2019), QRPGuys announced a new kit: the EZ-WSPR Pi, based on a public-domain circuit by HA7DCD. TAPR also has a fully-assembled surface-mount version. Both are “simply” a combo LPF (low-pass filter) and BPF (band-pass filter) with a buffer (and amplifier) for the clock output of the Raspberry Pi, which is what creates the WSPR signal.

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