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characteristics of the SPIRIT1 do not correspond to document AN4103

Question asked by electronics_engineer on Jun 6, 2016
Hello!
The spectrum of the signal in figure 4 or figure 5 (AN4103. Using the SPIRIT1 transceiver under EN 300 220 at 169 MHz) does not correspond to the real measurements.
Quick on and off of the transmitter generates a lot of harmonics. The result is a bad signal spectrum. I tried to use the ramp feature but got no result.
Tell me how to configure the transmitter, that would not have these outbursts?






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