Ok ok ok lore idea.
On RTL SDR. There is a thing called an upconverter. Where basiclly yoi attached it inbetween the antenna and the receicer. And since a normal receiver cant read lower frequencies, like 20 mhz and below but the antenna does. So the upconverter picks up the lower frequencies and converts them to a higher frequency so you can read them.
My idea, mental comprehension upconverter. Its a device of sorts, that you put on your head for temporary or in your brain for a more permenant version. And it upconverts what your brain/mind can comprehend. Say goodbye to pesky works spoken by higher beings driving you and your loved ones mad! No more will you need to deal with gazing upon the infinite vastness of oblivion and worry about your brain melting in your skul!
Have an eldritch friend that you cant talk to because their native tongue is incomprehensible? Well now you can have those friend talks for hours with the Mental Comprehension Upconverter™
For just 23.66◇ Mc you can buy one now and for an extra 50◇ Mc we can permanantly install it into your brain for almost permenant effects!