Received via G8JNJ SDR located in the South West UK. Somebody running eSSB, 4.5 kHz wideband audio, very nice signal, especially for SSB. At first I thought these were the guys who were on 6678 kHz USB and that they had simply QSYed due to QRM from the VOLMET / aeronautical weather transmission on 6676 kHz USB. Nope...those stations are still yakking away. 6685 kHz USB. 6.685 MHz USB. Aeronautical band. 6525 kHz - 6765 kHz. 6685 kHz - 6765 kHz military subband.