CMA-100 Countermeasures Amplifier

CMA-100 Countermeasures Amplifier is a high gain audio amplifier used to detect and identify certain types of surveillance devices attached to building wiring such as telephone wiring, LAN and server systems, AC power, and alarm wire. The CMA-100 Countermeasures Amplifier functions employ a sophisticated automatic gain control circuit that is superior to most audio amplifiers.

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SKU: REI-CMA-100

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High Gain Audio Amplifier

Efficiency: large signals can be monitored with minimal distortions and adjustable bias voltage can activate devices that are voltage or current sensitive

Usability: balanced input impedance can withstand being attached to live power lines with voltages up to 250V

Portability: contains a built-in AC/DC digital voltmeter, select-able audio filters, and a wide dynamic range

Features

Balanced input impedance of 50K ohm, can withstand being attached to live power lines with voltages up to 250V, and provides up to 115dB of gain
Unique AGC that has 105 dB of control
Signals as large as 31V peak-peak can still be monitored with minimal distortions
Manual gain control can be set to 0, 25, 50, 75, or 100 dB
Filters can be positioned to FLAT, LOW PASS, HIGH PASS, or BAND PASS.

Applications

Technical Surveillance Countermeasures (TSCM)
Counter Surveillance
Audio Amplification
Wiring Testing
Eavesdropping Detection
Intelligence Protection
Executive Protection
Surveillance Equipment Detection
Electronic Surveillance Detection

Specifications

INPUT IMPEDANCE

50k Ω balanced
Common mode rejection: >75dB
Maximum usable input: 31 Vp-p
Preamp auto attenuator: 0 to -40 dB (with overload warning LED)

BIAS CONTROL

0 to +/-14.5V DC, 5mA max (over current protected, input impedance is reduced to 3.6k ohms when bias is active)

MAXIMUM INPUT VOLTAGE

250V AC/DC
Leakage resistance to case: >10M Ω

AUTOMATIC GAIN CONTROL

Manual gain control: 0, 25, 50, 75, 100 dB
Headphone gain control: 0 - 15 dB
Maximum system gain: 115 dB Manual mode, 120 dB in Auto mode

DIGITAL VOLTMETER

3.5 Digit, auto zero, auto polarity, +/-199.9V AC/DC

FREQUENCY RESPONSE

No filtering: 25 Hz - 44Khz
High pass filter: 320Hz - 44kHz
Low pass filter: 25Hz - 3.2kHz
Band pass filter: 320Hz - 3.2kHz

AUDIO

Headphone audio output
Line-out audio output: 600 Ω

POWER

Power on/low battery LED (LED off @ 6.0V)
Battery: 9V Alkaline (5 - 30 hours typical run time)

MECHANICAL

Unit dimensions: 7.3 in x 2.75 in x 1.75 in (185.4 mm x 69.8 mm x 44.5 mm)
Unit weight: 12.1 oz (343 g)

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Shipping & Returns

*HIDDEN CAMERAS WITH AUDIO PRODUCTS:

Notice: When audio waiver is required, on some items, please allow an extra 3 days for custom build and testing before shipping, which includes next day orders. If this is a problem please call us for speed options and we will do everything in our power to help expedite your order along.

Audio devices may not be used to violate the privacy rights of others. In no way will Spy Associates or its subsidiaries or partners be held responsible for inappropriate use of these products.

*What does Must Sign Audio Waiver Mean?

You'll notice on some products that have an audio option, we require a signed waiver sent back to us once your order is completed, if you are within the United States, and the product is to be used solely by law enforcement, government, or an international shipping location.

FREE Ground Shipping On All Items

Receive free ground shipping on all items we carry. Depending on your location, carrier may vary depending on maximizing delivery speed to your location.

Same Day Shipping - Order By 2pm EST Monday - Friday

Your Order will be given to the shipping carrier the same day you place the order, not including national holidays & weekends. Any order placed after 2pm weekdays or on Saturday / Sunday will be shipped out the next business day.

Some custom built products may require up to 48 hours, which includes custom audio add-ons that may require 72 hours. You will be notified of any delays as soon as possible.

International Shipping & Customs

YES! We ship worldwide. On International Orders, any CUSTOMS FEES are the responsibility of the purchaser NOT SpyAssociates. Every country's import rules are different, so it's impossible to guess how much, and if any fees may apply.

Return Policy

We test all of our products before shipping to ensure they are in working order.

Your Satisfaction Is Our Number One Concern

REQUESTS TO RETURN PRODUCTS MUST BE OBTAINED FROM Spy Associates WITHIN A TEN (10) DAY PERIOD AFTER THE CUSTOMER HAS RECEIVED THE PRODUCT(S).

All products which are special ordered by the person ordering and are NOT subject to cancellations. Due to the nature of our product line, returns will only be accepted for products damaged upon shipment to the customer*. All returns must be authorized by SpyAssociates.com before product(s) is returned. SpyAssociates.com will replace, refund, or credit your account for returned product(s) at SpyAssociates.com's discretion. We have been forced to implement this policy because of the attraction of our products to unscrupulous people who return products after they have profitably gained from the short-term use of the products.

*Special exceptions may be made on a case by case basis determined by SpyAssociates.com. In this event, returns are subject to deductions for shipping costs and a 25% restocking charge and must be returned within a ten (10) day period from date of receipt of product(s). NO refunds will be given for products returned without explicit permission from SpyAssociates.com.

You Are Guaranteed QUICK & ACCURATE Service

Any return must be authorized by a representative of SpyAssociates.com and under no circumstances will returns be accepted otherwise. Authorization and shipping instructions must be obtained from SpyAssociates.com. No returns will be authorized after ten (10) business days of receipt of product(s) by the customer, unless found to be defective, in which case we will replace at no charge once returned with authorized RMA.

We at SpyAssociates.com strive to offer our customers the best products at the best possible prices. Due to the nature of the products, returns will not be accepted unless the product is found to be defective or unless otherwise explicitly stated on the specific SpyAssociates.com product page.

Shipping & Handling Charges Are Non-refundable.

WARRANTY:

Every product receives FREE LIFETIME SUPPORT. We guarantee all SpyAssociates.com products to be free of defects in workmanship and material for 90 days (some manufacturer's warranty is one (1) year or lifetime - please see info on the page for specific product's details) after sale to the customer. We will replace or repair the product(s) at our option providing there is no evidence of customer misuse, or alteration.