Thanks to kentvw and college student, I went to my local Ace and bought a bad larry. 54" X 3/8. I drilled a hole in the bottom of the box in the wall, fed the auger into the hole and drilled down. In no time at all I was through the baseplate and subflooring and into the basement. I will do the same with the TV in the greatroom, although this wall is at the back of a built-in cabinet so the 54" will come in handy.
Again, thanks for the tip - this tool rocks - and it saved me paying the antenna install guy $300 to do this.
Come to Hidden Content for all your DIY needs
Oh, good to hear it worked out.
Where do I send my consulting fee bill?
hey, I figured you guys would put this on my tab
As it turns out, I went a bit too small on the bit - tried to get by with a 3/8 and should have bought at least a 9/16. bought the small one to save myself a trip across town the the HD. It meant I had to drill up from the basement with a larger spade bit so the coax with string and duck tape would fit. Minor snag, though. It's ready for the antenna guy next week - just in time for some of the new shows!
If anyone knows where the name "bad larry" comes from - I'd love to know.
once again, Thanks to you all!