I got the following information from Bengt, SM6OEW concerning the operation 
from SK6DK:

TX PWR was in the region of 100W.
The receivers in use was an Icom 745 and an Icom R75, none of them with narrow 
filters.
They had brought a frame loop for reception but unfortunately something 
happened with it during the transport and it was not working when they arrived 
at Grimeton. The inv L antenna was therefore used also for reception.

There will be another try on JUNE 26, approx. between 17-19 UTC.

73
Christer
sm6pxj