Are there 5 or 6.....forgot where I saw it (FAJ?) but thought there was mention of a Satellite 6.....thought there were only 5, one for each borough. If there is a 6th (or 7th) what borough has it.

Just curious......

There was a Sat 6 working at the 10 Alarm. My bet is on 6.

There are 6. Brooklyn has two Satellite Units. Other Boroughs have 1. Satellites are NOT manned. They are operated by the crew of the Engine Company they are housed with. Most up to date list I know of.
Sat 1 - Eng 9 - Manhattan
Sat 2 - Eng 72 - Bronx
Sat 3 - Eng 294 - Brooklyn
Sat 4 - Eng 324 - Queens
Sat 5 - Eng 159 - Staten Island
Sat 6 - Eng 207 - Brooklyn