Originally Posted by planatlas
How is possible?
You need to check the aerial on the RX I guess. make sure it's not grounded or touching anything, preferably as straight as possible and not hidden behind electronic or carbon fibre items.
Make sure you use fresh/fully charged batteries... keep away from metal or sources of potential interference/shielding (buildings, pylons, trees, etc...)... check all your connections to the RX as well - make sure they are tight.
Do you have another model to check the D7e range with? If it really is the TX then maybe you can get it replaced under warranty.