Samson Concert 77 UHF TD Wireless with LM10 Omnidirectional Lavalier Transmitter

The Concert 77 system is a UHF wireless solution ideal for any professional application. UHF means Ultra High Frequency, which translates to crystal clear operation with no interference, traditionally available on only the most expensive systems. Now UHF performance and reliability are affordable thanks to Concert 77.

The new CT7 beltpack transmitter can be configured as a lavalier, headset, wind instrument and guitar system thanks to the popular locking P3 input connection. The CT7 also features a three-segment battery indicator, separate power and audio on/off switches, adjustable AF level (audio gain), and 12 hours of battery life on a single 9-volt battery.

The CR77 true-diversity half-rack UHF receiver is the core of the Concert 77 system. The new synthesized PLL frequency control circuitry keeps the signal locked and true while dual tuned molded antennas with LEDs monitor the true-diversity operation. The CR77 features a front panel display with large multi-segment audio level and RF level LED meters, and a large rotary volume knob allows easy adjustment of audio output. The rear panel features balanced XLR and unbalanced 1/4-inch outputs allowing flexible connection options. Two CR77 receivers can be rackmounted together in a single-space rack adapter available as an added accessory.

Technical Info

Specifications
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-inch outputs with mic/line level output switch

System
System Channels: 6

Frequency Type: F3

Modulation Type: FM

Noise Reduction Type: Compander/Expander

Distance: 300 feet

Transmitter (HT7, CT7)
Oscillation Type: Direct PLL

Pre-emphasis L 50 ìsec

Antenna:
- HT7: Integral Antenna
- CT7: 1/4 Wave Length Wire (Pig Tail)

Input (CT7): TB3M Switchcraft Connector

Maximum Input Level: 3 V p-p

Battery: Duracell MN1604 9-volt alkaline

Operating Temperature: -20° C / 55° C

Switches and Controls: Power ON/OFF, Audio ON/OFF
- HT7: Mic Level Volume
- CT7: Audio Level

Display (LED): Battery Low/Mid/High (corresponds to <5.3 V / 5.3 - 7 V / >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. (Overall): 0.5% (3% max) (@AF 1 kHz, RF 46 dBu)

AF Frequency Response: 50 Hz - 15 kHz (±3 dB overall)

Battery Life: 12 hours

Receiver
Oscillation Type: PLL

De-emphasis: 50 ìsec

IF Frequency: 10.7 MHz

Antenna: 1/4 Wavelength Rod

Input and Output: DC Inlet, Balanced Output, Unbalanced Output

Display (LED): Receiver A/B (Green), Power On (Red), Peak (Yellow), RF Level (5 pc)

Level Control: Audio Level Volume, Mute Level Control

Operating Temperature: 0° C / 50° C

Operating Voltage: 12 Volts ±10%

Current Consumption: 160 mA (at all LED lights)

Receiving Frequency Range: 801 - 805 MHz

Sensitivity: 18 dBì (@ THD 2%)

Squelch Sensitivity: 0 - 40 dBì (Adjustable)

Selectivity: ±150 kHz (AF Out Ratio -60 dB)

T.H.D. (Overall): 1% Max (@AF 1 kHz, RF 46 dBu)

Signal to Noise Ratio (Overall): 90 dB (w/IHF-A Filter)

Residual Noise: 90 dBv (w/IHF-A Filter)

Band Mute: ±40 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)

Audio Output Impedance - Unbalanced: 5 k Ohms

Audio Output Impedance - Balanced: 600 Ohms