Re: Wireless units recommendation
 

Usually the Phantom Power plug-on transmitters are significantly more expensive than the non-powered. plug-on. In the case of the 100 G2/3 system, the compatible 300 and 2000 series plug-on transmitters are in the $700 range. Sony has an 'affordable' Phantom Powered plug-on system, though I don't recall the model #.

Re: Wireless units recommendation
 

UWP-D16 (UWPD16) : Product Overview : Australia : Sony Professional

I have 3 sets and I love them......

Re: Wireless units recommendation
 

While the current recommended phantom power standard is 48 VDC, 24 and 12 volt standards also exist. Some condenser mics are rated to work with lower voltages, on the order of 11 volts phantom power. This includes a number of the AT mics such as the AE5100, AT875R, and AT2035 to name the ones I have used. I have successfully used them with the AT1800 series plug-on transmitter that provides 12 volt phantom power.

Phantom power is designed to work on balanced audio systems and is different from the unbalanced DC bias provided by some systems and body packs.

Sony bluetooth mikes
 

On the strength of Aindreas Lynch's review of the little Sony ECMAW4 Bluetooth mikes, I bought a set; because, oh, heck, I love a gadget. Actually, I am impressed by how well they work at interview distances.
I can see a situation where a spot news shooter could stick one of these on the lapel of the harried fire captain at a news scene and be ready to shoot in, literally, 30 seconds. The transmitter and receiver are each the size of a pocket cigarette lighter and the whole kit could tuck into a small pocket of your kit bag for emergencies.
There is a built in mike that works nicely, and you can plug in a mini-plug mike like the Audio Technica ATR3350 (which I also tried, with good results). Good audio level into my Nikon D7000 (peaks at about minus 9dB on Nikon's auto level system) and a noise floor (which may be includes room tone) of about -50 dB. The set can also work as a cueing system. Cables, earphones, windscreen included. For a backup or quick news shot maybe these Bluetooth gadgets have some value....Lectrosonics? No. Useful? I think so.