Reports suggest that jamming stations have been deployed on the lower portion of 40 meters. The jamming appears to be coming from Cuba. The signals, spaced at regular intervals, exhibit a squishy, popping noise. The apparent jamming showed up after anti-government protesters took to the streets in Cuba, followed by a government crackdown. So far, there’s no proven connection between the jamming…
Click here for original story, FCC Investigating Alleged “Jamming” on 40 Meters
Source: ARRL