Our Hydrophone amplifiers are for professional use in underwater acoustics with high performance and quality. We have several models with different features and sensitivity. The more sensitivity the more the cost. Define your purpose to determine which model is best for your project.
Hydrophone amplifiers. Overview (1 channel). Find the models on this page.
PD 1102. Pinger detector and underwater Listening amplifier
A1101. Hydrophone Amplifier for detection of Sonars and Pingers. Envelope detector
A1001. Hydrophone Amplifier. Low noise. Low cost version
B1501. Hydrophone Amplifier with high- and low pass filters and buffered output
PA1001. Power Amplifier for passive hydrophones and underwater loudspeakers
Models with several channels (2,5 or 8 channels) are covered on a separate page:
click to go there (opens in a new page): Multi-channel hydrophone amplifiers
hydrophone amplifiers Categories in regards of use.
Fisheries inspection and control. Hydrophone amplifiers for detection of acoustic pingers in regards to: The council Regulation EC No 812/2004: "the mandatory use of acoustic deterrent devices to deter Cetaceans from bottom set gillnet and entangling net"
The highest sensitivity. Tested and recognized by german fishery authority.
Underwater acoustics research and sound recordings.
Marine biology research institutes.
Cetaceans sound recordings and research. Monitoring of sonar and communication sounds signals from
dolphins, porpoises and whales.
Models with highest sensitivity
Models with less sensitivity but also cheaper
Models that specifically detect the clicks by dolphins and porpoises. Click detector
Fishermen.
Detection of acoustic pinger. Fishermen wanting to check whether he has active pingers on the nets.
We developed a cheaper model for this purpose.
xPD 1102 Pinger Detector - Sonar Detector
PD 1102 (etec) Pinger detector or Sonar Detector is the ultimate Underwater hydrophone Listening Amplifier and Acustic Alarm Detector. Also called Pinger Detector or Click Detector.
A high sensitive high gain ultra Low noise amplifier with frequency detector and automatic gain control. State of the art in hydrophone amplifying.
The PD1102 Pinger Detector Hydrophone amplifier is developed especially for detection of acoustic pingers for fishery authority control in regards to: The council Regulation EC No 812/2004: "concerning incidental catches of cetaceans in fisheries and amending Regulation
(EC) No 88/98"
The PD1102 Pinger Detector is tested and recognized by german fishery authority.
The PD1102 Pinger Detector is easy to use and operate.
A unique feature with this instrument is to monitor pingers directly from the inspection vessel.
The effective low frequency filters in conjunction with the Automatic Gain Control may under moderate weather conditions offer the unique possibility of monitoring pingers aboard even with the engines slow running and/or the vessel in slow drift.
LEDs are optical indicator for ultrasound frequencies received close-by. The pinger detector is equipped with 3 operating modes and 4 noise filters. Amplifies original hydrophone signals and alllows recording of all signals. Convert ultra sound signals into audible frequencies. mix both modes
Filters reduce low fequencies of background noice e.g. coming from vessel engines and seawaves.
PD1102 Pinger Detector System overview the pinger detector system consists of :
etec PD1102 Pinger Detector Amplifier
Shoulderbag for the pinger detector
optional WITH or WITHOUT TC4033 Reson hydrophone
A set of closed aerodynamic headphones
loudspeaker for presentation of the testresults (pocket loudspeaker A100)
Complete system packed in a watertight suitcase, type PeliCase1500BK
Controls and features - the unit will monitor the frequency range from 700Hz to 160kHz
- Includes frequency converter for monitoring sounds above the audible range
- the unit may also be used as a conventional underwater listening amplifier
- build in Automatic Gain Control for optimum signal strengh
- High Pass Filters for attenuation of Seawaves and Engine noise
- Gain hold function for suppression of background noise and transients
- Switchable monitoring between full range hydrophone signal and frequency conversion
- Low Noise Charge Input Amplifier will handle all passive piezoelectric transducers
Technical data
- Extremely high signal gain of 80dB maximum
- Switchable High Pass Filter Settings : 700Hz, 1500Hz, 3300Hz, 7000Hz
- Alternative unit High Pass Filter Settings : 7Hz, 70Hz, 700Hz, 2kHz, 7kHz, 20kHz
- Output for headphones with standard 3.5mm mini jack
- Audible frequency range 20 to 20kHz with volume control
- Full range hydrophone signal output with BNC connector and fixed signal level for measuring purpose
Sensitivity considerations In general this amplifier has been developed in order to monitor pingers at a very long distance
Analog pinger frequency 8 - 12 kHz up to 400 m.
Digital pinger frequency 10 - 120 kHz up to 200 m.
The build in frequency detector will detect various frequencies at a distance up to 50meters
The maximum detection range is greatly influenced by the weather conditions and the general back ground noise
By operating the low frequency seawave filters and the automatic gain control function the user can obtain good sesitivity even in rough weather
View details for PD1102 Pinger Detector
Presentation. Click to view PPT powerpoint.
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technical details. Click to view PPT powerpoint.
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German initial test report. Click to view PPT powerpoint.
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PD1102 Pinger Detector Amplifier system with hydrophone
System packed in a watertight suitcase with Hydrophone and cable. Weight is appr. 7.5kg
system includes:
- PD1102 pinger Detector Amplifier
- Hydrophone type RESON TC4033
- Headphone type Monacor MD5000-DR
- Pocket Speaker type Saitek A-100
- Battery charger type Monacor PSS-800
- Shoulderbag type PacSafe MetroSafe 200
- Watertight Suitcase PeliCase 1500BK
Click detector The Click detector decodes changes of signal level above the audible range. This is done on both the posive and the negative edge. The original frequency information is not available with this detector. Only the changes in amplitude level will be audible.
Envelope detector The Envelope detector decodes changes of signal level above the audible range. This might be either the posive or the negative edge single sided. In this case the negative edge.The original frequency information is not available with this detector.
Divider detector The Divider detector actually divides the received signal with a fixed or variable frequency. The audible signal will be a division of the received signal. Not all will be audible. Some of them will fall outside the audible range.
Mixer detector The Mixer detector mixes a fixed or variable frequency of 5 to 8 khz together with the received hydrophone signal. The audible signal will be the sum and difference components of the mixed frequencies.
An acoustic pinger is a signalling device used to protect marine mammals (cetaceans) from fishing gear -- and vice versa.
Bycatches are considered the most serious threat to harbour porpoises and dolphins worldwide.
Acoustic pingers are helping to reduce bycatch of porpoises and dolphins, but may also deter cetaceans from critical habitats.
Pingers (acustic pingers or acustic alarm, acoustic dolphin deterrent, acoustic transmitter) are used to alert Dolphins and Porpoises to the presence of gillnets, driftnet and other fishing equipment, reducing the losses (drowning) significantly. (foto spinner dolphin drowned)
There are different types of acoustic pingers and digital or analog models. They emit 10 KHz tonal acoustic signals (bips) or 20-160 KHz sweeps, 130-150 dB with duration 300 millisec and with 4 sec intervals. (Ultrasound > 20KHz).
Pingers are used on nets with interval 100 meters (analog) and 200m (digital). The use in EU countries is mandatory: The council Regulation EC No 812/2004: "concerning incidental catches of cetaceans in fisheries and amending Regulation."
Implementation of EC regulation-812/2004 in North Sea: Report
4 pinger types length: 15-20 cm
a. Seawave
b. Airmar
c. Aquamark
d. Fumunda
xA1101 Pinger & Sonar detector
A1101 Pinger & Sonar detector with Envelope detector.
Hydrophone amplifier with high input impedance, envelope detector and build-in batteries for Acoustic detection of pingers and sonar
Applications:
Amplifier with Highpass filter and Gain settings may be operated on the frontpanel and the internal batteries can be tested for the charge condition.
The unit contains an envelope or "click" detector which has a seperate output so the hydrophone signal and the envelope signal may be monitored simultaniously.
Description A1101
- Hydrophone Voltage Amplifier.
- Very low noise. Extreme high input impedance
- Wide frequency bandwidth.
- Includes Highpass filter and Gain controls.
- Input for Piezo ceramic transducer
- Insert calibrate
- Low frequency filter to take off seawaves
- Gain control in 10dB steps
- Hydrophone output
- Click" detector output
- BNC connectors In and Out.
- Not water or splash proof.
- for use in laboratory environments and protected areas.
- Power On/Off switch and Battery Test
- optional External power supply
- The battery test lamps also function as a signal peak indicator for monitoring the signal level to prevent overloading of the following equipment.
Internal powered with 2 pcs. build-in 9volt PP3 batteries
This unit may also be powered by an external 12Volt battery or by a +/- 12Volt dual power supply. The unit has a very low current consumption and the maximum opration time is appr. 24 hours on a set of full charged batteries.
View details:
A1101 Pinger & Sonar detector. Details & Technical data
Click to view word doc (opens in a popupwindow) - or rightclick here to download
A1001 Hydrophone amplifier with high input impedance. Low cost.
Small Hydrophone amplifier with high pass filter. Intended for building in together with a small battery like a 9Volt PP3 or a 12 accu. Powersupply cable is delivered with the unit.
Highpass filter and Gain settings can be preset internally with a screwdriver.
Applications:
Description A1001
- Hydrophone Voltage Amplifier
- Very low noise. Extremely high input impedance.
- Includes presets for High Pass filter and Gain controls.
- High Pass filter to filter off seawaves
- Input for Piezo ceramic transducer
- GAIN control in 10dB steps
- Wide frequency bandwidth
- Low current consumption.
- Small and handy version.
- BNC connectors In and Out.
- Water splash proof.
- for use in the field or for building in together with a battery
View details:
A1001 Hydrophone amplifier. Details & Technical data
Click to view word doc (opens in a popupwindow) - or rightclick here to download
B1501 Hydrophone amplifier and cable driver with high- and low pass filters and buffered output.
Designed for stationary use in rough climatic invironments or for building into equipment which does not require frequently access to the amplifiers internal controls. All control buttons are placed inside the box in order to make the unit more watertight.
Description B1501 - Hydrophone Voltage Amplifier.
- Very low noise. Extreme high input impedance.
- Wide frequency bandwidth.
- Includes Lowpass filter, Highpass filter, Gain control, Input impedance controls.
- High Pass Filter for filtering off low-freq. seawaves.
- Water splash proof.
- Intended for stationary use in rough invironments or for monitoring use in laboratory and research invironments
- variable input Resistance and capacitance to setup filtering and/or attenuation directly on the transducer input terminals.
- special controls on the transducer input terminals in order to handle extremely high signals coming from picking up of underwater explosions or for filtering of heavy sea-waves.
- buffered at the signal output and may drive very long cables up to 1000 meters
- BNC connectors In and Out.
- build-in 2 pcs. 9Volt PP3 batteries. Low power consumption. It may also be powered by an external 12 to 24Volt battery or a laboratory supply.
View details:
B1501 Hydrophone amplifier. Details & Technical data
Click to view word doc (opens in a popupwindow) - or rightclick here to download
PA1001 Power amplifier for passive hydrophones and underwater loudspeakers.
Power amplifier for driving an underwater loudspeaker and a high input impedance hydrophone amplifier.
This amplifier is a stand alone unit with a power amplifier and a hydrophone reciever amplifier complete with buildin envelope or "click" detector and batteries and charger supplied all together in a watertight suitcase.
Description PA1001 This amplifier is designed for driving an underwater piezoceramic loudspeaker like the Reson type TC2130 or eq.
It also contains a high input impedance hydrophone amplifier and an envelope or "click" detector for monitoring, recording or listening.
- High impedance preamplifier
- 10mAmp Loop for hydrophones
- Balanced input
- Input amplifier and Gain selector
- Input SeaWave filter
- Liniar input amplifier
- Hydrophone Output signal
- Detector Output signal
- Left and Right Line Inputs
- Source selector
- Output Level Left and Right
- Output Selector
- Power output terminals
- Right channel power output
The Amplifier is capable of driving 90volt peak to peak of signal power up to 300kHz in a capacitive load of 10nF maximum with a caracteristic impedance of 100ohm.
The amplifier is supplied in a watertight suitcase with 4pcs.12volt batteries.
Operating time is appr.12hours on a set of fully charged batteries.
View details:
PA1001 Hydrophone amplifier. Details & Technical data
Click to view word doc (opens in a popupwindow) - or rightclick here to download
Hydrophone amplifiers - single channel
