Siren Jammer, hitting all 6 active Radio Free Asia Vietnamese language outlets, recorded on July 22, 2011, about 1414 UTC.
In this case it is hitting 12140, 11680, 11605, 9715, 9465, and 7520 kHz all at the same time. 11680 and 9465 kHz jammers are very low jam to signal ratio, so you have to listen closely to hear it on those frequencies. At other times the jammer is strong on those outlets, jsut not when I chose to make this recording.
Note that in several cases the jammer is offset from the center frequency of the jammed outlet. In two cases it appears the jammer is only putting its energy in the USB of the jammed AM signal.
t*
MattExzy 4 months ago
Excellen!
MattExzy 4 months ago