My 40m QRSS transmitter spotted warming up

I put my 40m QRSS transmitter on air over the weekend as I do sometimes and was most intrigued to be sent the following capture.

G6NHU's 40m QRSS transmitter warming up

G6NHU’s 40m QRSS transmitter warming up

Colin, G6AVK who’s in Rayleigh, Essex (not too far from me) had been monitoring at the time and spotted my transmission when it first came on air.  You can clearly see the downwards drift in frequency as my transmitter warmed up.

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