I've been playing with a Magnavox TB100MW9 STB I picked up at Walmart this past Friday.
It comes in box that states: "$40 - You can use coupon - The U.S. Government is making $40 rebate coupons available to offset the cost of these boxes at the time of purchase" and "NTIA Coupon Eligible".
Inside the box are the STB, a basic remote control, 2 AA batteries for the remote, owner's manual, an addendum to the owner's manual and a coax cable with push-on type connectors.
After leaving the unit on for a few hours, the plastic case felt slighty warm to the touch, but not excessively hot. The tuner does have ventilation slots in the plastic case but no fan.
It does have:
RF Channel 3/4 and composite video output.
Stereo on the RF Channel 3/4 output - at least that's what my TV display indicates when I used the RF output to hook this unit to my TV.
To setup the channels you do an initial autoscan which scans and saves any OTA channels it detects.
You can go into a setup screen and add or remove channels manually. You can only remove the main channel not individual sub channels.
IT DOES NOT HAVE:
Does not have any buttons on the STB to change the channel. If you lose the remote control, you won't be able to use this STB. The remote has tiny buttons and can't be programmed for TV power or volume. The only switch on the STB is a main power switch that puts it in standby when switched on.
No grid style TV channel guide - Only shows one program at a time. You're not going to get a Tivo or cable /satellite box type EPG with this box. Depending on the channel it looks like you can get up to about 6 hours of PSIP guide information.
It has no on screen time display, I couldn't find any way to display what time the STB was receiving OTA. Also, there is no way to set the time manually in case your local stations are broadcasting the wrong time. The STB has settings for your time zone and daylight savings time.
It has no VCR Timer function, you can't set it tune to specific channel at a specific time.
It has no S-video output and no RF passthrough - I checked this by putting the box between my antenna and TV. No NTSC or Clear QAM tuner - It does have a weird bug - you can try to tune to any channel from 2-99. If this does have a QAM tuner I couldn't find any way to enable it.
Screen caps below:
1 Shows the signal strength indicator when you go into the STB box setup screens
2 Aspect ratio settings in the setup screen
3 Channel Add/Delete functions
4 Channel scan that is part of the intial setup, you can redo the scan through the setup screens
5 Shows what's available in the "Detail" settings screen