Just bought an RCA DTA 800. Input is a 75 ohm F-connector, outputs are 75 ohm F (Ch 3/4 selectable) and composite video, with Left and Right channels for audio. There is also an RJ-45 for the smart antenna, which I don't have (does this make it a "B" model with the Broadcom chip?).
Initial testing, with two sets and four antennas (two inside, two outside):
The unit is exceedingly easy to program and control. Sensistivity is good (listed as -83 dbm to -5 dbm), and I was able to pick up KNLC-DT on reverse on one of the outside antennas (neat trick). Easily better performance than my Samsung 4th gen reciever.
I live in front-end overload hell, right under the guns, plus some multipath. Good performance for a first try. I'll try some DX'ing later.
One feature of use to indoor antenna users is an audio tone that allows the installer to check signal stregnth while moving the antenna (no looking/running back to the set). Huge buttons on the remote. Unit is an all-or-nothing program scan, so any channel you want to antenna-test must be captured first. No additional channel update feature. The unit does allow for letterboxing on a 4:3 screen (default is off/4:3).
All output is 480i.
Using any analog tuner with the converter box passing RF (converter unit off) is going to result in seriously degraded signal stregnth. It's DTV or snow...choose. Do not split or chain devices downstream from this unit.
In summary, the box does what it is advertised to do- allow an analog set to recieve DTV.