We have detected the following malfunction:
Each time we are transmitting with the radio in a channel centered in 409 MHz, we find problems with the GPS. We have reduced the output power of the radio, and the problem disappears. We do not have problems between the radio and the GPS in other channels, separated 50 MHz between them. The GPS is using L2 band (1227.60 MHz). The length of the GPS cable is 10 meters and the gain of the preamplifier of the GPS antenna is 20 dB. The cable insertion loss is 0.5 dB per meter.
Which proposals can solve this problem?
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