Samson Technologies was founded 20 years ago when they introduced some of the first affordable wireless technology ever. The latest line of wireless gear in that tradition: Concert 77. UHF quality diversity wireless that anyone can afford.
CR77 Wireless Receiver
This true-diversity half-rack unit with PLL frequency control works with all Concert 77 wireless systems. Rugged, durable and crystal clear with incredible range. UHF (Ultra High Frequency) means clearer frequencies with less interference. Diversity reception means no dropouts. Concert 77 represents sophisticated wireless technology at great prices.
CT7 Belt-Pack Transmitter
For use with all other Concert 77 Systems. This compact and simple-to-use belt-pack has on/off and level control.
Headset System
Concert 77 is the perfect affordable wireless system for fitness instructors, public speakers, anyone who needs a hands-free microphone. Includes the Samson Qv Vocal headset for performance.
Qv Microphone
The Qv headset mic allows drummers, keyboardists and other musicians to perform "hands free" vocals without affecting their playing technique. It produces a full-range sound with a enough definition to ensure that every word is heard clearly, even at higher volume levels.
Qv Features:
Sophisticated condenser mic element
Hypercardioid pattern helps eliminate feedback
50 Hz to 18 kHz frequency response for a balanced, full-range sound
Withstands high sound pressure levels
Lightweight and comfortable design
Adjustable metal gooseneck for easy mic positioning
Locking detachable P3 connector reduces cable/connection problems
Features
True Diversity UHF Wireless System with PLL Frequency Control
Multi-segment Audio level, RF level and A/B Antenna Operation LED meters
Squelch control eliminates carrier signal noise and RF interference
Tuned molded antennas for accurate reception
XLR and unbalanced 1/4 in. outputs with mic/line level output switch
Technical Info
Channel Frequencies
Channel U1: 801.375 MHz
Channel U2: 801.875 MHz
Channel U3: 803.125 MHz
Channel U4: 803.750 MHz
Channel U5: 804.500 MHz
Channel U6: 804.750 MHz
Receiver (CR77)
Type of Reception: Single Superheterodyne, True Diversity
Oscillation Type: Synthesized PLL Frequency Control
D-emphasis: 50 sec
IF Frequency: 10.7 MHz
Antenna: 1/4 Wavelength Rod
In/Out: DC Inlet, Balanced Output, Unbalanced Output
Display (LED): Antenna A/B (Green), Power On (Red), Peak (Yellow), RF Level (5 pc)
Level Controls: Volume, Squelch
Operating Voltage: 12 Volts + 10 %
Current Consumption: 160 mA (at all LED lights)
Receiving Frequency Range: 801 - 805 MHz
Sensitivity: 18 dB @ THD 2%
Squelch Sensitivity: 0 - 40 dB (Adjustable)
Selectivity: 150 kHz (AF Out Ratio -60 dB)
S/N Ratio (Overall): 90 dB (w/ IHF-A fi lter)
Residual Noise: 90 dBv (w/ IHF-A fi lter)
Band Mute: 50 kHz / 100 kHz (RF IN: 46 dBu EMF)
AF Frequency Response: 50 Hz - 15 kHz ( 3 dB overall)
Audio Output Level - Unbalanced: 0 dBv
Audio Output Level - Balanced: -20 dBm (Line), -40 dBm (Mic) Switch
Selectable
Audio Output Impedance/Unbalanced: 5 k Ohms
Audio Output Impedance/Balanced: 600 Ohms
Dimensions: 8.5 in. (w) x 1.75 in. (h) x 4.6 in.(d) 216 mm (w) x 44 mm (h) x 116 mm (d)
Weight: .75 lb / 340 g
Transmitter (CT7)
Oscillation Type: Synthesized PLL Frequency Control
Pre-emphasis: 50 sec
Antenna: 1/4 Wave Length Wire (permanently attached)
Input: TB3M QG (Mini XLR) Connector
Maximum Input Level: 3 V p-p
Battery: Duracell MN 1604 9-volt alkaline
Switches/Controls: Power On/Off, Audio On/Off, AF Level
Display (LED): Battery Low/Mid/High (<5.3V/5.3-7V/7V)
Operating Voltage: 9 Volts +20%/-40%
Current Consumption: 47 mA
RF Power: 10 mW
Frequency Stability: + 20 kHz
Spurious Ratio: 2.5 nW
Deviation: 20 kHz (16.5 kHz-23.5 kHz)
T.H.D. (Typical): 0.5%
AF Frequency Response: 50 Hz - 15 kHz (3 dB overall)
Battery Life: 12 Hours
Personal use items that are used at your mouth or in your ear cannot be returned once opened due to health laws. This includes all microphones, guitar talk boxes, ear plugs, and in-ear earphones. 
