My second visit in the Nature Reserve Rodachtal located along the former German border. I experienced very poor propagation on the bands, that's why I only made 2 QSOs on 20m. The 40m band behaved a little bit better.
This time I had a little bit different set up from what I am usually running. The rig was an SGC-2020 powered by a 3S 5Ah LiPo Battery. After one hour of operation, people heard chirp on my signal.
At home I could confirm the reports and found my signal to be very chirpy. The SGC needs more than the 11.1V of the LiPo to operate chirp free. ( clean signal with 12V )