Am I pigeonholed in my career?

Graduated a couple years ago and went into industry. I was plopped onto oscillator designs and dubbed as an RF engineer. I haven’t taken any RF classes in school. For the last couple years I’ve been tweaking and optimizing a very specific oscillator. If I look for a new job, will companies be turned off that I’ve only been doing oscillators and don’t really know about big RF topics?

Am I just stuck at this place or can only get a new job that deals with oscillators?