Legal aspects

strategies not to be caught

manual trunking
irc distant control
glooves while buidlng the radiopis (think also to shave first) > nodnaPi

strategies to be caught

stickers
potatos (stamp and radio)
twitter
RDS

Using a HAM radio licence in Germany aka callsign

Germany is a CEPT country!

If you have a CEPT license (covered by T/R 61-01) or a CEPT Novice license (covered by ECC-Rec. (05)06), you do not require any guest license for your short stay (up to three months) here in Germany. Just make sure that you bring your Amateur Radio license with you. For a list of countries accepting the recommendation, see the ERO web site. What if I have no CEPT license?

Foreign Radio Amateurs without a CEPT license or a CEPT Novice license can apply for a guest license at the telecommunications authority Bundesnetzagentur (BNetzA) in Mülheim a. d. Ruhr. The license will be issued for 3 months and costs (currently) 70 €uros. (BNetzA also issues Guest-licenses for 7 days - free of charge - but only in special cases). Please read and follow all the instructions carefully - it is reported that some CEPT countries

Albania Austria Belgium Bosnia and Herzegovina Bulgaria Croatia Cyprus Czech Republic Denmark Faroe Islands Greenland Estonia Finland Aland Islands France Corsica Guadeloupe Guyana Martinique St-Bartholomew St-Pierre/Miquelon St-Martin Réunion Mayotte French Antarctica French Polynesia & Clipperton New Caledonia Wallis & Futuna Germany Greece Hungary Iceland Ireland8 Italy Latvia Liechtenstein Lithuania Luxembourg Macedonia (FYROM) Monaco Montenegro Netherlands Norway Svalbard Poland Portugal Azores Madeira Romania Russian Federation Serbia Slovak Republic Slovenia Spain Sweden15 Switzerland Turkey Ukraine United Kingdom Isle of Man N. Ireland Jersey Scotland Guernsey Wales

Other infos

Below some "bundes sources" about amateur radio, incl. the method to declare and identify the AR broadcast

on broadcasting in germany

with a link on : "Administrative rule on assigning frequencies for the broadcasting service"

Interesting point about getting a allocated frequency on the FM band for experimental radio project

https://www.bundesnetzagentur.de/cln_1912/EN/Areas/Telecommunications/Companies/FrequencyManagement/Broadcasting/broadcasting_node.html