BG4507 board for 6842 HOPF time server

Time server 6842 is one of the most widely used time servers of the German Hopf brand. This time server has been installed in many projects. Time Server 6842 is installed in a modular way and has many expansion boards. Among these board is the antenna card. The antenna card has GPS and DCF77 antenna inputs. This board is updated based on the development of satellite frequencies for time servers. Versions 4505, 4507 to 4511 are add-on cards for the antenna card, which are replaced with pins on the antenna card. Devices similar to 6842 that do not have good satellite reception or their connection to the satellite has a problem, by replacing this board, the satellite connection will be established accurately and the system will be overhauled. Many collections are thinking of upgrading the firmware software on these cards, which is not accepted by HOPF and has caused many failures in the systems.