|Map from pskreporter.info at about 4pm GMT 19.2.2012|
I nowadays work US also on 7MHz in the early mornings. The same 10m vertical antenna is used for both 21MHz and 7MHz. It is up 12m and with three 10m radials. For 21MHz the antenna works as a 5/8 wave gp, which has a low lobe; good for dx working.