WILW opps I thought that because he said 4228 its a uhf antenna that is normally used for hdtv reception.

I normally sell this antenna for hdtv reception. With a digital signal you either get it or dont. There is no ghost or fuzzy in picture quality but rather with a low signal you get pixelates and drop outs, there is no noise in the picture.

On any installs we never use 300 ohm twin leads because it can easily pick up interference especially if you were to run a rotor wire beside it.

More convient for me to use a shielded 75ohm wire.

You could be correct about the loss as I never used 300ohm and only seen it from old installes in the 70's.

A question how did you test the loss in cables is it something that you can see.