[Elecraft] K144XV

[Fausto Coletti]

Today I installed the module K144XV. It all works ok but I noticed several spurious signals received, in particular each 12.5 kHz at a level 
of around -140 dbm indicated on P3, plus some pretty strong signals such as at 144.4165 to S7 and others.
Obviously signals are present with the antenna disconnected and with a 50 Ohm load on the antenna connector. 
I exclude the origin from the outside of the transceiver, I disconnected all possible noise sources such as switching power supplies and similar. 
It 's normal or there may be a problem? Any suggestions? 

Fausto IK4NMF