The JSON config for EU868 results in error "packetforwarderconfig can be a maximum of 4096 characters"

You may use the following utility to format the JSON to a smaller size. The whitespace was made of space characters that exploded the character count. There is also an option to remove all spaces.

https://codebeautify.org/jsonviewer

Be aware that the 868 example on multitech.net has in-line comments that need to be removed.

UPDATE: 2017-11-28 - Examples have been updated on multitech.net so that they are all less than 4 KB. AU915, AS923, KR920, IN865 channel plans have been added.