CR77 Receiver - Microphone SAMSON - Free user manual and instructions

Product Type	UHF True Diversity Receiver for wireless microphone system
Brand	Samson
Model	CR77 Receiver
Category	Microphone
Reception Type	True Diversity with two antennas (A and B)
Display	RF Meter (6 segments) and Audio Meter (6 segments)
Controls	Volume, Squelch (adjustable), Power On/Off switch
Audio Outputs	Balanced XLR (600 Ω) and unbalanced 6.35 mm jack (5 kΩ)
Output Level	Unbalanced: 0 dBV; Balanced: -20 dBm (line) or -40 dBm (mic)
Frequency Band	Band K (477-492 MHz) or Band E (863-865 MHz) depending on region
Oscillation Type	PLL (Phase Locked Loop)
Power Supply	12 V DC ±10% via included power adapter (160 mA consumption)
Consumption	160 mA (all LEDs on)
Sensitivity	18 dBm (@ 2% THD)
Signal-to-Noise Ratio	90 dB (with IHF-A filter)
Audio Frequency Response	50 Hz - 15 kHz (± 3 dB)
Total Harmonic Distortion	< 1% (@ AF 1 kHz, RF 46 dBu)
Residual Noise	90 dBV (IHF-A filter)
Operating Temperature	0 °C to 50 °C
Maintenance and Cleaning	Clean with a dry cloth; do not use water or solvents
Safety	Follow FCC guidelines (part 15) and safety warnings (avoid water, heat, etc.)
General Information	Professional or home use; requires a compatible transmitter (AH7)

Frequently Asked Questions - CR77 Receiver SAMSON

How to power on the CR77 receiver?

Use the POWER button on the front panel. The power LED lights up red.

What type of batteries to use for the AH7 transmitter?

Use a standard AAA alkaline battery. Typical battery life is 8 hours. Ni-Cad rechargeable batteries are possible but last less than 4 hours.

How to adjust the receiver output volume?

Turn the VOLUME knob on the front panel. The reference level is obtained fully clockwise (position 10).

What do the ANT. A and ANT. B LEDs mean?

They indicate which antenna is active. The green LED lights up for the antenna receiving the strongest signal (diversity)

How to adjust the transmitter input gain?

Use the included screwdriver to turn the GAIN control on the AH7. Adjust so that the CR77 audio meter shows 0 dB in normal operation and up to +3 dB for peaks.

Why is the sound distorted?

This may be due to too high input gain on the transmitter (the +6 dB segment of the audio meter lights up). Reduce the gain using the screwdriver.

How to wear the Qe Fitness headset?

Place the headset over the ears, like glasses. The microphone should be directly in front of the lips. Do not cover the capsule with your hand to avoid feedback.

What to do if the range is reduced?

Check that the receiver antennas are fully extended and in a vertical position. You can also adjust the SQUELCH control with a screwdriver, but it is best to leave it at the factory setting.

How to maintain the receiver?

Clean it with a dry cloth. Do not use water, chemicals, or solvents. Ensure good ventilation around the unit.

Where to find the serial number?

The receiver serial number is indicated on a label on the back or bottom of the unit. Write it down for any after-sales service requests.

USER MANUAL CR77 Receiver SAMSON

Black SAMSON audio recording device with earphones and control knobs (no visible text or symbols on main body)

OWNER'S MANUAL

Important Safety Information

1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at the plugs, convenience receptacles, and at the point where they exit from the apparatus.

11. Only use attachments/accessories specified by the manufacturer.

12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

1. Unplug the apparatus during lightening storms, or when unused for long periods of time.

2. Refer all servicing to qualified personnel. Service is required when the apparatus has been damaged in any way, such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

3. This appliance shall not be exposed to dripping or splashing water and that no object filled with liquid such as vases shall be placed on the apparatus.

4. Caution-to prevent electrical shock, match wide blade plug wide slot fully insert.

5. Please keep a good ventilation environment around the entire unit.

6. The direct plug-in adapter is used as disconnect device, the disconnect device shall remain readily operable.

7. Batteries (battery pack or batteries installed) shall not be exposed to excessive heat such as sunshine, fire or the like.

If you want to dispose this product, do not mix it with general household waste. There is a separate collection system for used electronic products in accordance with legislation that requires proper treatment, recovery and recycling.

Private household in the 28 member states of the EU, in Switzerland and Norway may return their used electronic products free of charge to designated collection facilities or to a retailer (if you purchase a similar new one).

For Countries not mentioned above, please contact your local authorities for a correct method of disposal.

By doing so you will ensure that your disposed product undergoes the necessary treatment, recovery and recycling and thus prevent potential negative effects on the environment and human health.

Copyright 2019, Samson Technologies Corp. v3

Samson Technologies Corp.

278-B Duffy Avenue

Hicksville, NY 11801

www.samsontech.com

Important Safety Information

FCC Rules and Regulations

Samson wireless receivers are certified under FCC Rules part 15 and transmitters are certified under FCC Rules part 74. Licensing of Samson equipment is the user's responsibility and licensability depends on the user's classification, application and frequency selected.

This device complies with Part 15 of the FCC rules Class B and RSS-210 of Industry & Science Canada.

Operation is subject to the following two conditions:

(1) This device must not cause harmful interference, and
(2) This device must accept any interference received including interference that may cause undesired operation. Suitable for home or office use.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced Radio/TV technician for help.

WARNING: Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

This equipment is intended for use in wireless microphone applications.

Equipment is intended for sale in: AT, BE, CH, CY, CZ*, DK, EE, FI*, FR*, DE*, GR*, HU, IE, IS, IT, LV, LT*, LU, MT*, NL, NO*, PL* PT, RO, SK, SI, ES, SE, UK

*Subject to license. Please contact your national frequency authority for information on available legal use in your area. Any changes or modifications not expressly approved by Samson Technologies Corp. could void your authority to operate the equipment.

Hereby, Samson Technologies Corp., declares that this CR77 and AH7 is in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU. The declaration of conformity may be consulted at:

http://www.samsontech.com/site_media/support/manuals/AirLine77_AH7_DOC.pdf

Introduction

Welcome to Samson AirLine, the original micro-wireless microphone systems. Wireless microphone systems were originally developed to eliminate cables, providing unparalleled freedom of movement. AirLine takes this concept to a new level with transmitters so small, lightweight and ergonomic, they are nearly invisible, providing a completely hassle-free user experience. To create the world's smallest wireless transmitters, we developed new proprietary technology featuring miniaturized circuitry and the ability to operate on a single tiny AAA battery (with 8 hours typical battery life). The AirLine System combines the lightweight AH7 headset transmitter with a Samson Qe Fitness or DE10 low profile headset microphone.

In these pages, you'll find a detailed description of the features of the AirLine Wireless System, as well as step-by-step instructions for its setup and use. If your wireless system was purchased in the United States, you'll also find a registration card enclosed—don't forget to follow the instructions so that you can receive online technical support and so that we can send you updated information about this and other Samson products in the future. Also, be sure to check out our website www.samsontech.com for complete information about our full product line.

We recommend you keep the following records for reference, as well as a copy of your sales receipt:

Receiver Serial number: ____

Transmitter Serial number: ____

Date of purchase: ____

If you have any questions or comments regarding the AirLine Wireless Microphone System or any other products from Samson, do no hesitate to contact us at [e-mail].

With proper care and maintenance, your AirLine Wireless System will operate trouble-free for many years. Should your AirLine Wireless System ever require servicing, a Return Authorization (RA) number must be obtained before shipping your unit to Samson. Without this number, the unit will not be accepted. Please visit www.samsontech.com/ra for an RA number prior to shipping your unit. Please retain the original packing materials and, if possible, return the unit in its original carton. If your AirLine Wireless System was purchased outside of the United States, contact your local distributor for warranty details and service information.

Guided Tour - CR77 Receiver / Front Panel

SAMSON ANT. A VOLUME CR77 UHF 0 10 25 50 75 1600-130-6-5 ANT. A RF METERAUDIO METSOKB B CR77 UHF TRUE DIVERSITY RECEIVER MIN MAX SGUELCH POWER 1 3 4 1 2 5 6 5 7

1. Antennas (A and B) - The antenna mountings allow full rotation for optimum placement. In normal operation, both antennas should be placed in a vertical position. The antennas can be folded inward for convenience when transporting the CR77.
2. VOLUME control - This knob sets the level of the audio signal being output through both the balanced and unbalanced output jacks on the rear panel. Reference level is obtained when the knob is turned fully clockwise (to its "10" setting).
3. AUDIO METER - This display indicates the strength of the incoming audio signal. When the "O" segment is lit, the incoming signal is optimized at unity gain; when the "+6" segment is lit, the signal is overloading. When only the left-most "-20" segment is lit, the incoming signal is at just 10% of optimum strength. If no segments are lit, little or no signal is being received.
4. Squelch control - This control determines the maximum range of the CR77 before audio signal dropout. Although it can be adjusted using the supplied plastic screwdriver, it should normally be left at its factory setting.
5. ANT. A/B Antenna Indicators - When signal is being received, one of these will be lit green, showing you whether the (left) "A" or (right) "B" antenna is currently being used.
6. RF METER (Radio Frequency) - This display indicates the strength of the incoming radio signal. When the “100%” segment is lit, the incoming RF signal is fully modulated and at optimum strength. When only the second most left-most “10%” segment is lit, the incoming signal is at just 10% of optimum strength. If no segments are lit, little or no signal is being received.
7. Power switch - Use this to turn the CR77 power on and off. When the receiver is on, the internal Power LED is lit.

Guided Tour - CR77 Receiver / Rear Panel

NOTICE THIS DEVICE COMPLIES WITH PART TO OF FCC FIGURE OPERATING IS SUBJECT TO THE FOLLOWING 3 CONDUCTORS. 1-TIME DEVICE MUST NOT CAUSE NAMOUNT INTERFERENCE. 2-TIME DEVICE MUST ACCEPT ANY INTRODUCTION PROCESSED. INCLUDING INTERFERENCE THAT MUST CAUSE UNLESS RED OPERATION POWER DC IN + - 12 VOLT (160mA) BALANCED OUTPUT 1 GND 2 HOT 3 COLD MIC/LINE -40dBm -20dBm UNBALANCED OUTPUT SAMSON RECEIVER MODEL CR77 SVERITY RECEIVER FECC CE TOLERANCE CONTROL VS. POWER TOLERANCE POWER VS. POWER BEANS FOR CHINA

1. DC Input - Connect the supplied power adapter here, using the strain relief as shown in the illustration below. WARNING: Do not substitute any other kind of power adapter. Doing so can cause severe damage to the CR77 and will void your warranty.

2. BALANCED OUTPUT* - Use this electronically balanced low impedance (600 Ohm) XLR jack when connecting the CR77 to professional (+4 dBu) audio equipment. Pin wiring is as follows: Pin 1 ground, Pin 2 high (hot), and Pin 3 low (cold).

3. MIC/LINE Switch - Sets the audio output level attenuation of the balanced output to -20 dBm (line level) or -40 dBm (mic level).

4. UNBALANCED OUTPUT* - Use this unbalanced high impedance (5 kΩ) 1/4" jack when connecting the CR77 to consumer (-10 dBV) audio equipment. Wiring is as follows: tip hot, sleeve ground.

*If required, both the unbalanced and balanced outputs can be used simultaneously.

Technical diagram showing three stages of a power connector with labeled components and wiring connections.

Using the strain relief: Gather up a loop of wire and pass it through the strain relief, then pass the adapter plug through the loop in order to create a knot.

Guided Tour - AH7 Transmitter

SAMSON 2 1 3 4 5

1. Power switch - Press and hold this switch to power on and off the AH7 transmitter (to conserve battery power, be sure to turn the AH7 off when not in use). To eliminate the possibility of an audible pop, mute the audio signal at your external mixer or amplifier before turning the AH7 power on or off.

2. Power / Battery LED - This LED flashes once when the AH7 is first turned on and lights steadily red when there is less than 2 hours of battery power remaining, indicating that the battery needs to be changed.

3. Battery compartment - Insert a standard AAA alkaline battery here, being sure to observe the plus and minus polarity markings shown. We recommend the Duracell type battery. Although rechargeable Ni-Cad batteries can be used, they do not supply adequate current for more than four hours.

WARNING: Do not insert the battery backwards; doing so can cause severe damage to the AH7 and will void your warranty.

1. Antenna - This permanently attached flexible antenna should be fully extended during normal operations.

2. Input Gain Control - This control adjusts the transmitter input sensitivity (gain). For optimal performance, using the included screwdriver, set the input Gain control to where you see the CR77 AUDIO METER level at 0dB during normal performance and reaching +3dB under high levels. If your level is at +6dB, the audio signal will be distorted and the input Gain control should be turned down.

Wearing the AH7 Headset Microphone

As shown in the illustration, the correct way to wear your Qe fitness headset microphone, is over the ears, as you would wear a pair of eyeglasses. Because the Qe microphone is specially designed to be used up close, be sure to position the microphone directly in front of your lips. To avoid feedback problems, take care not to cover the microphone capsule with your hand.

Position the headset over your head so that the body of the transmitter is behind your head. Adjust the headset so that it fits comfortably on your ears and is secure against your head.

Note: If wearing glasses, it is recommended to put the AH7 transmitter on first than place glasses over the transmitter.

For added comfort and fit, the headset includes an adjustable headband. To fit the headband, pull elastic strap over the ear hooks and locate in front of the stop point (A). For larger sizing, the headband can be moved behind the stop point (B) or completely removed by sliding the elastic band over the ear hooks and microphone capsule.

Note: When removing the headband, first take off the microphone windscreen.

Diagram showing a person's ear with a device labeled 'SAMSON' pointing to the ear's mouth, with a microphone attached.

Technical diagram of a mechanical device with labeled parts A and B, showing handle and base components.

DE10 Headset

Fitting the DE10 Headset

Diagram of a medical or surgical device with attached tubing and connectors, showing directional arrows (no text or symbols)

The DE10 headset can be sized by sliding the ear hooks to fit snug around your head. If the DE10 is loose and will not stay in place, slide the ear hook wires back for a tighter fit.

Line drawing of a medical or surgical device with attached tubing and connectors, showing no text or symbols.

Adjust the microphone position by holding the left ear hook wire and slide the boom forward or back. For optimum performance the microphone should be close to the skin and towards the corner of the mouth, approximately a half inch away.

Position the moisture guard ring as close to the capsule as possible.

For outdoor use and to help reduce p-popping, use the included windscreens.

Mic Positioning

Side profile line drawing of a woman's face and ear (no text or symbols)

Position the DE10 microphone element about 0.25" – 1" behind the corner of your mouth. Since the DE10 is an omnidirectional capsule, the end of the microphone does not need to be facing your mouth. To avoid breadth noise and p-pops, do not place the microphone directly in front of your mouth.

Side profile line drawing of a human head and ear with a medical device symbol (no text or labels)

If the microphone is too far away from your mouth you will need to increase the gain and reduce isolation.

To minimize additional noise, do not locate the microphone tight against your cheek.

Specifications

AH7 Transmitter

Operating Power Voltage 1.5V Typical, 1.05V Minimum, 2V Maximum

Current Consumption 60mA Typical

Battery Life 8 Hours (AAA size battery)

RF Output Power (5mW) -4dB Minimum, +3dB Maximum

THD < 2% (1 kHz deviation 15kHz)

Audio Frequency Response 50Hz - 15kHz (±3.5 dB)

Controls Internal Power Switch

Indicators Power On (LED Flash)

Low Battery (LED On)

CR77 Receiver

Oscillation Type PLL

Antennas 1/4 Wavelength Rod

Indicators Receiver A/B (Green), Power On (Red),

AF Level (6 segment), RF Level (6 segment)

Level Control Audio Level Volume, Squelch Level Control

Operating Temperature 0°C / 50°C

Operating Voltage 12 Volts ±10%

Current Consumption 160 mA (all LED lights illuminated)

Sensitivity 18 dBm (@ THD 2%)

Squelch Sensitivity 0 - 40 dBm (Adjustable)

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

S/N Ratio (Overall) 90 dB (w/IHF-A Filter)

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

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

Unbalanced: 0 dBv

Balanced: -20 dBm (Line), -40 dBm (Mic)

Unbalanced: 5 kΩ

Balanced: 600 Ω

At Samson, we are continually improving our products, therefore specifications and images are subject to change without notice.

Channel Plan

K-Band E-Band*
Ch Frequency Ch Frequency
K1	489.050 MHz E1 863	.125	MHz
K2	490.975 MHz E2 863	.625	MHz
K3	492.425 MHz E3 864	.500	MHz
K4	477.525 MHz E4 864	.875	MHz
K5	479.100 MHz
K6	480.475 MHz

* Not for use in the USA and Canada. For questions regarding available channels in your area contact your local Samson distributor.

NOTICE THIS DEVICE COMPLIUS WITH PART TO OF PCS, FIGURE OPERATING IS DIRECT TO THE FULLWING 2 CONSTRUCTION. 3-TES DEVICE MUST NOT CABLE RANOFF 100% COVERAGE. 4-THE DEVICE MUST ACCEPT ANY INTERFERENCE PROCESSED INCLUDING INTERFERENCE THAT MAY CAUSE WINDS AND OPERATION POWER DC IN 12 VOLT (160mA) BALANCED OUTPUT +40dBm -20dBm MIC/LINE UNBALANCED OUTPUT SAMSON RECEIVER MODEL CR72 DIVERSITY RECICULAR FE CE INTRODUCTION WITH MEASURE STANDARD FLOWING OR OTHERS MAX 100AΩ

Diagram showing three steps of electrical connection: power switch, battery, and plug connections with Chinese labels.

Diagram showing a person's ear with a device labeled 'SARDO' and a magnifying glass pointing to the ear's mouth.

Technical diagram of a device with labeled parts A and B, showing mechanical components and connectors.

Casque DE10

Diagram of a medical or laboratory device with attached tubing and connectors, showing directional arrows indicating movement (no text or symbols present)

Line drawing of a medical or surgical device with attached tubing and connectors, showing no text or symbols.

Line drawing of a human head profile with ear and earlobe (no text or symbols)

Side profile line drawing of a human head and ear with a medical cross mark on the ear (no text or symbols)

Three-step diagram illustrating the connection between a power supply device and its internal components, labeled in Chinese.

Diagram illustrating facial recognition using a device labeled 'SARSOA' to address the ear of a human head.

Technical diagram of a medical device with labeled parts A and B, showing tubing and connectors.

Headset DE10

Diagram of a medical or surgical device with attached tubing and connectors, showing directional arrows indicating movement (no text or symbols present)

Line drawing of a medical or surgical device with attached tubing and connectors, showing no text or symbols.

Side profile line drawing of a woman's face and ear (no text or symbols)

Side profile line drawing of a human head and ear with a medical device symbol (no text or labels)

Diagram showing three steps of a power supply or measurement device with labeled components and wiring connections.

Diagram illustrating facial recognition using a device labeled 'SARROK' to interact with a human face, showing signal path and ear positioning.

Technical diagram of a medical device with labeled parts A and B, showing tubing and connectors.

Auriculares DE10

Diagram of a medical or surgical device with attached tubing and connectors, showing directional arrows (no text or symbols)

Line drawing of a medical or surgical device with attached tubing and connectors (no text or symbols)

Side profile line drawing of a woman's face and ear (no text or symbols)

Side profile line drawing of a human head and ear with a medical device symbol (no text or labels)

Diagram showing three steps of electrical connection: power supply, power cord, and terminal connections with labeled components.

Diagram illustrating facial recognition using a device labeled 'SARROK' to interact with a human face, showing signal path and ear positioning.

Technical diagram of a medical device with labeled parts A and B, showing tubing and connectors.

Cuffie DE10

Diagram of a medical or surgical device with attached tubing and connectors, showing directional arrows indicating movement (no text or symbols present)

Line drawing of a medical or surgical device with attached tubing and connectors, showing no text or symbols.

Side profile line drawing of a woman's face and ear (no text or symbols)

Side profile line drawing of a human head and ear with a medical device symbol (no text or labels)

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