Can ear infection produce subraclavical node swelling? . 3x1.5 cm. Today another node next to the first found.

Highly unlikely. If you truly have a middle ear infection, including pain, hearing loss and pressure in the ear, it is highly unlikely that a lymph node in the (most likely) supra-clavicular area of that size would be associated with the ear infection. I would be concerned about other diseases. Depending on how long a time you have had this node, a biopsy would be indicated.