PHONAK INVISITY EAR RECEIVER

The invisity ear receiver by Phonak is the smallest in-ear RF receiver in the world and the perfect choice for presenters and performers who require crystal clear audio prompts.
Invisity is completely wireless, sits invisibly inside the ear canal, and weighs just 1.5g. It offers total freedom of movement and is ergonomically designed for day-long wearer comfort.
Today invisity is used and trusted by broadcasters and filmmakers worldwide.

1 channel (7 MHz range), programmable via the optional invisity programming unit (IPU).

Phonak TX300V
The TX300V (shown left) is the ideal 9.5-inch transmitter for long range use with Phonak invisity.

It features:
    Frequency range of 150-220 MHz
    20 frequency settings
    Remote antenna with mounting bracket    
    2 adjustable length radials
   
The TX300V is fully programmable, fully resistant to temperature extremes and humidity, and available with PTT (with/without VOX function)

Frequency: fixed or programmable (single or multi), 7MHz band
Frequency response: 200 Hz - 4500 Hz
Audio signal output: 94 dBSPL measured in a 1.3 cc ear simulator (Volume 1 default setting), 102 dBSPL measured in a 1.3 cc ear simulator (Volume 2 default setting),
or adjustable on 4-channel model
Noise filter: squelch
Sensitivity: SINAD >17 dB @ E=3mV/m
Channel selectivity: >50 dB (at 200 kHz channel spacing)
Antenna:    magnetic, integral
Spurious emissions: below -57 dBm ERP
Distortion: >5% (depends on volume setting)
Dimensions: 19 x 12 x 12mm (0.74" x 0.47" x 0.47")
Weight: 1.5 g (inc. battery)
Battery life: 13 h (constant reception) using Phonak battery
Power consumption: 3.3 mA
SNR (signal over noise ratio): approx. 41dB in the AGC @ 1 kHz