Smallest most compact RF modulator?

[Findm-Keepm]

I have some Astec modulators from old 70s and 80s stuff, but my favorite is the little Alps modulators used in later VCRs and DVDs. 2X1x1/2 inch or so. You can find larger VCR, Cable and Satellite box modulators for 2 bucks each new, so I no longer scrounge. They even have RF pass through, so I use them on my daily driver with my DTT900 to test video units.

Worst modulator? Some of the early game units (we're not talking Atari, Nintendo, or Sega, but the cheaper/California all-in-one start-up stuff) - all discrete components, and drift like you wouldn't believe.