^There might be a better way than that, look in Ubisoft\Silent Hunter 4 Wolves of the Pacific\Data\Cfg\Main.cfg and change any radio contacts to a higher number.
If you are using any mods which are active in jsgme have a look in there as well, save the game in the office and then uninstall the mod, make any changes and hopefully it should be OK. I would not use too high a setting though as you just never know what message might be useful to you.
