Radiovibrations - Offset DX
waterfall diagrams received in Handewitt, Germany on 27/01/2015 , 28/01/2015 , 14/11/2009
by Peer-Axel Kroeske, DL2LBP
This is one of the best known frequencies for overseas DX in Europe. 927 KHz is almost free and two strong stations from east Canada can regularly be heard: CJYQ St.John's, NF and CFBC St.John, NB. But this is only the tip of the iceberg. During the night more than 40 carriers appear. Overseas signals can be detected almost all day. Only two hours around noon are quiet. Surprise: a station in the afternoon possibly via grey line effect. Could it be powerful CJCA Edmonton? Not sure because of the slightly unstable carrier. Now in 2015 CJCA seems much more stable.
These are the stronger ones as listed in MWLIST. But it's possible that back in 2009 offsets were a bit different.
929.9972 CJCA, The Light, Edmonton (AB) 50 KW
929.998 CJYQ, St John's (NF) 20 KW
929.9998 CFBC, Saint John (NB), 50 KW
930.0020 WPAT, Paterson (NJ), 5KW
930.0038 WBEN, Buffalo (NY), 5 KW
930.0048 KSEI, Pocatello (ID), 5 KW
930.008 KNSA (AK), Unalakleet, 4.2 KW
930.0097 KYAK, Yakima (WA), 10 KW
f=fast drift, p=propagation effects, : interrupted by night break, w=only at warm up/switch on
view offset frequency list & 24h graph at fmscan.org
all screenshots taken with the superb and free Spectrum Lab software