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Sonotronics Inc. ( Sonotronics ) values its users' privacy. This Privacy Policy ("Policy") will help you understand how we collect and use personal information from those who visit our website or make use of our online facilities and services, and what we will and will not do with the information we collect... ONLINE PRIVACY POLICY AGREEMENT March 16, 2023 Sonotronics Inc. ( Sonotronics ) values its users' privacy. This Privacy Policy ("Policy") will help you understand how we collect and use personal information from those who visit our website or make use of our online facilities and services, and what we will and will not do with the information we collect. Our Policy has been designed and created to ensure those affiliated with Sonotronics Inc. of our commitment and realization of our obligation not only to meet, but to exceed, most existing privacy standards. We reserve the right to make changes to this Policy at any given time. If you want to make sure that you are up to date with the latest changes, we advise you to frequently visit this page. If at any point in time Sonotronics Inc. decides to make use of any personally identifiable information on file, in a manner vastly different from that which was stated when this information was initially collected, the user or users shall be promptly notified by email. Users at that time shall have the option as to whether to permit the use of their information in this separate manner. This Policy applies to Sonotronics Inc., and it governs any and all data collection and usage by us. Through the use of www.sonotronics.com, you are therefore consenting to the data collection procedures expressed in this Policy. Please note that this Policy does not govern the collection and use of information by companies that Sonotronics Inc.does not control, nor by individuals not employed or managed by us. If you visit a website that we mention or link to, be sure to review its privacy policy before providing the site with information. It is highly recommended and suggested that you review the privacy policies and statements of any website you choose to use or frequent to better understand the way in which websites garner, make use of and share the information collected. Specifically, this Policy will inform you of the following 1. What personally identifiable information is collected from you through our website; 2. Why we collect personally identifiable information and the legal basis for such collection; 3. How we use the collected information and with whom it may be shared; 4. What choices are available to you regarding the use of your data; and 5. The security procedures in place to protect the misuse of your information. Information We Collect It is always up to you whether to disclose personally identifiable information to us, although if you elect not to do so, we reserve the right not to register you as a user or provide you with any products or services. In addition, Sonotronics Inc. may have the occasion to collect non-personal anonymous demographic information, such as age, gender, household income, political affiliation, race and religion, as well as the type of browser you are using, IP address, or type of operating system, which will assist us in providing and maintaining superior quality service. Why We Collect Information and For How Long We are collecting your data for several reasons: · To better understand your needs and provide you with the services you have requested; · To fulfill our legitimate interest in improving our services and products; · To send you promotional emails containing information we think you may like when we have your consent to do so; · To contact you to fill out surveys or participate in other types of market research, when we have your consent to do so; · To customize our website according to your online behavior and personal preferences. The data we collect from you will be stored for no longer than necessary. The length of time we retain said information will be determined based upon the following criteria: the length of time your personal information remains relevant; the length of time it is reasonable to keep records to demonstrate that we have fulfilled our duties and obligations; any limitation periods within which claims might be made; any retention periods prescribed by law or recommended by regulators, professional bodies or associations; the type of contract we have with you, the existence of your consent, and our legitimate interest in keeping such information as stated in this Policy. Use of Information Collected Sonotronics Inc. does not now, nor will it in the future, sell, rent or lease any of its customer lists and/or names to any third parties. Sonotronics Inc. may collect and may make use of personal information to assist in the operation of our website and to ensure delivery of the services you need and request. At times, we may find it necessary to use personally identifiable information as a means to keep you informed of other possible products and/or services that may be available to you from www.sonotronics.com Sonotronics Inc. may also be in contact with you with regards to completing surveys and/or research questionnaires related to your opinion of current or potential future services that may be offered. Sonotronics Inc.uses various third-party social media features including but not limited to YouTube, Twitter, Instagram, LinkedIn and other interactive programs. These may collect your IP address and require cookies to work properly . These services are governed by the privacy policies of the providers and are not within Sonotronics Inc.'s control. Disclosure of Information Sonotronics Inc. may not use or disclose the information provided by you except under the following circumstances: · as necessary to provide services or products you have ordered; · in other ways described in this Policy or to which you have otherwise consented; · in the aggregate with other information in such a way so that your identity cannot reasonably be determined; · as required by law, or in response to a subpoena or search warrant; · to outside auditors who have agreed to keep the information confidential; · as necessary to enforce the Terms of Service; · as necessary to maintain, safeguard and preserve all the rights and property of Sonotronics Inc.. Non-Marketing Purposes Sonotronics Inc. greatly respects your privacy. We do maintain and reserve the right to contact you if needed for nonmarketing purposes (such as bug alerts, security breaches, account issues, and/or changes in Sonotronics Inc. products and services). In certain circumstances, we may use our website, newspapers, or other public means to post a notice. Children under the age of 13 Sonotronics Inc.'s website is not directed to, and does not knowingly collect personal identifiable information from, children under the age of thirteen (13). If it is determined that such information has been inadvertently collected on anyone under the age of thirteen (13), we shall immediately take the necessary steps to ensure that such information is deleted from our system's database, or in the alternative, that verifiable parental consent is obtained for the use and storage of such information. Anyone under the age of thirteen (13) must seek and obtain parent or guardian permission to use this website. Unsubscribe or Opt-Out All users and visitors to our website have the option to discontinue receiving communications from us by way of email or newsletters. To discontinue or unsubscribe from our website please send an email that you wish to unsubscribe to sales@sonotronics.com. If you wish to unsubscribe or opt-out from any third-party websites, you must go to that specific website to unsubscribe or opt-out. Sonotronics Inc. will continue to adhere to this Policy with respect to any personal information previously collected. Links to Other Websites Our website does contain links to affiliate and other websites. Sonotronics Inc. does not claim nor accept responsibility for any privacy policies, practices and/or procedures of other such websites. Therefore, we encourage all users and visitors to be aware when they leave our website and to read the privacy statements of every website that collects personally identifiable information. This Privacy Policy Agreement applies only and solely to the information collected by our website. Notice to European Union Users Sonotronics Inc.'s operations are located primarily in the United States. If you provide information to us, the information will be transferred out of the European Union (EU) and sent to the United States. (The adequacy decision on the EU-US Privacy became operational on August 1, 2016. This framework protects the fundamental rights of anyone in the EU whose personal data is transferred to the United States for commercial purposes. It allows the free transfer of data to companies that are certified in the US under the Privacy Shield.) By providing personal information to us, you are consenting to its storage and use as described in this Policy. Security Sonotronics Inc. takes precautions to protect your information. When you submit sensitive information via the website, your information is protected both online and offline. Wherever we collect sensitive information (e.g. credit card information), that information is encrypted and transmitted to us in a secure way. You can verify this by looking for a lock icon in the address bar and looking for "https" at the beginning of the address of the webpage. While we use encryption to protect sensitive information transmitted online, we also protect your information offline. Only employees who need the information to perform a specific job (for example, billing or customer service) are granted access to personally identifiable information. The computers and servers in which we store personally identifiable information are kept in a secure environment. This is all done to prevent any loss, misuse, unauthorized access, disclosure or modification of the user's personal information under our control. The company also uses Secure Socket Layer (SSL) for authentication and private communications to build users' trust and confidence in the internet and website use by providing simple and secure access and communication of credit card and personal information. Acceptance of Terms By using this website, you are hereby accepting the terms and conditions stipulated within the Privacy Policy Agreement. If you are not in agreement with our terms and conditions, then you should refrain from further use of our sites. In addition, your continued use of our website following the posting of any updates or changes to our terms and conditions shall mean that you agree and acceptance of such changes. How to Contact Us If you have any questions or concerns regarding the Privacy Policy Agreement related to our website, please feel free to contact us at the following email, telephone number or mailing address. Email: sales@sonotronics.com Telephone Number: 520-746-3322 Mailing Address: Sonotronics Inc. 3169 S Chrysler Ave Tucson, Arizona 85713 GDPR Disclosure: If you answered "yes" to the question Does your website comply with the General Data Protection Regulation ("GDPR")? then the Privacy Policy above includes language that is meant to account for such compliance. Nevertheless, in order to be fully compliant with GDPR regulations your company must fulfill other requirements such as: (i) doing an assessment of data processing activities to improve security; (ii) have a data processing agreement with any third party vendors; (iii) appoint a data protection officer for the company to monitor GDPR compliance; (iv) designate a representative based in the EU under certain circumstances; and (v) have a protocol in place to handle a potential data breach. For more details on how to make sure your company is fully compliant with GDPR, please visit the official website at https://gdpr.eu. FormSwift and its subsidiaries are in no way responsible for determining whether or not your company is in fact compliant with GDPR and takes no responsibility for the use you make of this Privacy Policy or for any potential liability your company may face in relation to any GDPR compliance issues. COPPA Compliance Disclosure: This Privacy Policy presumes that your website is not directed at children under the age of 13 and does not knowingly collect personal identifiable information from them or allow others to do the same through your site. If this is not true for your website or online service and you do collect such information (or allow others to do so), please be aware that you must be compliant with all COPPA regulations and guidelines in order to avoid violations which could lead to law enforcement actions, including civil penalties. In order to be fully compliant with COPPA your website or online service must fulfill other requirements such as: (i) posting a privacy policy which describes not only your practices, but also the practices of any others collecting personal information on your site or service — for example, plug-ins or ad networks; (ii) include a prominent link to your privacy policy anywhere you collect personal information from children; (iii) include a description of parental rights (e.g. that you won't require a child to disclose more information than is reasonably necessary, that they can review their child's personal information, direct you to delete it, and refuse to allow any further collection or use of the child's information, and the procedures to exercise their rights); (iv) give parents "direct notice" of your information practices before collecting information from their children; and (v) obtain the parents' "verifiable consent" before collecting, using or disclosing personal information from a child. For more information on the definition of these terms and how to make sure your website or online service is fully compliant with COPPA please visit https://www.ftc.gov/tips-advice/business-center/guidance/childrens-online-privacy-protection-rule-six-stepcompliance. FormSwift and its subsidiaries are in no way responsible for determining whether or not your company is in fact compliant with COPPA and takes no responsibility for the use you make of this Privacy Policy or for any potential liability your company may face in relation to any COPPA compliance issues.

Sonotronics temperature telemetry transmitters transmit their current temperature by varying the pulse interval time between pings CTT TRANSMITTERS – CODED TEMPERATURE TELEMETRY Sonotronics temperature telemetry transmitters transmit their current temperature by varying the pulse interval time between pings. For example, a tag at 0 deg Celsius may have an interval time of 700ms, and at 25 deg celsius it may have a pulse interval time of 1450ms. Temperature tag instruction sheets are sent with temperature tags. The temperature transmitters have an accuracy of +/-2 deg C and a resolution of.5 deg C. The transmitters can be user calibrated for accuracies greater than +/- 2 deg C. Temperature Telemetry Transmitters CTT: Range up to 1km+ Notes The typical rule of thumb is to use transmitters that have a weight in water that is 1.5 – 2% of the fish weight in air. Weight in O2 (air) is put only as additional reference. -E is the extension denoting external mount, -I denotes internal implant. You must specify internal or external when ordering transmitters. Links: CTT Manual VIDEOS

The ETN, together with industry (being Thelma Biotel, Sonotronics, and Lotek), have worked on the development of new open tag protocols, which are available for all telemetry users across the world. As stated in the compatibility note , it is now clear that encrypted protocols in acoustic telemetry should be avoided by all means. To move forward towards a much-needed pan-European collaborative network that could provide relevant information in support of decision-making processes related to conservation and management, compatibility between brands and agreements on transmission protocols and ID allocation are imperative. Therefore, the ETN, together with industry (being Thelma Biotel, Sonotronics, and Lotek), have worked on the development of new open tag protocols, which are available for all telemetry users across the world - this technology is NOT restricted to Europe. This resulted in two robust and energy-efficient transmission protocols aimed for the aquatic research community, being OPi and OPs, for ID and sensor tags respectively. The Open Protocol: OPi supports over 1 million unique IDs, while OPs supports over 64 000 unique IDs with up to 4096 data points resolution. Both protocols are short and effective to reduce issues with transmission collisions. The protocols are available for all interested manufacturers after agreeing with the terms of references. Opening the infrastructure networks of acoustic telemetry to all manufacturers of different types of sensors and tags will drive innovation, and boost availability of new solutions for future research. The Manufacturers handed over OP to the ETN, who assigned the Flanders Marine institute as a third party to control the ID allocation related to these protocols.

Underwater Acoustic Equipment Tracking - Our pingers have been used to relocate current meters, ROV/AUV/UUV vehicles, deep ocean sites, divers, and many other subsea applications. EQUIPMENT TRACKING Equipment Marking Tracking Products “Recover Your Assets” Sonotronics is the leader in pinger development for a variety of oceanographic needs. Our pingers have been used to relocate current meters, ROV/AUV/UUV vehicles, deep ocean sites, divers, and many other subsea applications. This page provides an overview of our equipment marker pinger product line. Links to specific pages about products are found here. EMT-01 Series Low cost, long life, durable pingers. Lifetimes from months to 4 years. More… Products include: EMT-01-1: 48 month, 1km range, 2.5km depth rating EMT-01-2: 18 month, 3km range, 2.5km depth rating EMT-01-3: 6 month, 4km range, replaceable batteries EMT-AR Series Tilt reporting pingers. Monitor your deployment angle as equipment arrives on the ocean floor in real time. Pinger continues to ping for its lifetime allowing for monitoring and relocating of the equipment. More… Products include: EMT-AR: Angle reporting pingers TILT-Tracker: Complete kit for monitoring tilt angle UDR Underwater Diver Receiver This robust unit is used for locating Sonotronics pingers, even in low visibility environments. The UDR now has a visual signal strength indicator on the display. The UDR is also capable of receiving telemetry from Sonotronics transmitters. More… MANTRAK Kit This is the most common set used for locating and monitoring pingers from a surface vessel. It contains a receiver, hydrophone, test pinger, and all other accessories necessary to locate pingers. More…

MINISURT Sonotronics proudly introduces this new addition to available fisheries research technologies. This small, inexpensive, long life unit allows for tracking of fish passage within its detection area. Strings, arrays, or individual receivers can be utilized depending on the resolution of detection desired in the study. One of the main principles behind the miniSURT is its ability to save valuable field time by simplifying deployments thus reducing project costs. MINISURT Sonotronics proudly introduces this new addition to available fisheries research technologies. This small, inexpensive, long life unit allows for tracking of fish passage within its detection area. Strings, arrays, or individual receivers can be utilized depending on the resolution of detection desired in the study. One of the main principles behind the miniSURT is its ability to save valuable field time by simplifying deployments thus reducing project costs. The miniSURT brings new features and options to the marketplace aiding in the continued development of fisheries research technologies. Applications Include: 1. Site fidelity studies 2. Spawning area detection 3. Animal attachment for social experiments 4. Simple positioning in array configurations 5. Gates for Active tracking boundaries 6. Towable: for area surveys The miniSURT allows simple mooring by using tie-wraps to connect to small rope. Transmitters within the units detection area will be logged to the on board memory along with date and time. The miniSURT may be configured in the field to allow frequency scanning for ACT coded transmitters, or use with rcode transmitters. The miniSURT is designed to allow mounting to an animal as a small (16mm diameter) expendable unit, as a remotely powered, cabled RS232 system, or as a standalone submersible receiver powered by a single AA lithium battery. miniSURTsoft The miniSURT is compatible with Sonotronics integrated software for communications with logging receivers – SURtool, SURsoft, and SURsoftDPC. SURtool or SURsoft may be used to set time and date, download data, configure detection frequency and many other options. The data processing center can be used to process and examine the data obtained from miniSURT’s, saving valuable time in sorting data. Features include examining data by transmitter, processing telemetry data, and viewing a graphic display of activity at a passive receiver. Links: Datasheets miniSURT Software Software Downloads VIDEOS

Frequently Asked Questions | How do I uniquely identify Sonotronics’ transmitters? | What are the source levels for Sonotronics’ transmitters? | What range should I expect when manual tracking? FREQUENTLY ASKED QUESTIONS How do I uniquely identify Sonotronics’ transmitters? Sonotronics uses multiple methods to identify its transmitters. First, the combination of Pulse Interval (PI) and frequency uniquely defines a particular transmitter. Given the availability of over 25 different frequencies, and the allowing 10mS spacing to allow unique intervals from 870mS to 1500mS, this allows for over 1500 simple combinations, and custom intervals and frequencies are available to allow for more than double this amount. In addition, Sonotronics transmitters employ a unique aural code that sounds as a distinct pattern of pings when listening via a receivers’ speaker or headphone. This feature is similar in concept to the use of Morse code in radio communications, allowing for detection and identification under adverse conditions or at extreme ranges. What are the source levels for Sonotronics’ transmitters? Because source level is only a portion of information necessary to evaluate the performance of an acoustic system, Sonotronics quotes achievable ranges rather than source level in most publications. The combination of very narrow band receivers (500Hz total) and directional hydrophones provide for excellent detection ranges with even modest power transmitters. An expression used to predict range is: NL-DI = SL-TL, where NL is the noise level, and is bandwidth dependant, DI is the directivity index of the hydrophone, TL is the transmission loss between transmitter and hydrophone due to range and absorption, and SL is the source level of the transmitter: range is inferred by the distance component of TL. Note that NL is a function of bandwidth (10*logBW) – the difference between an SUR with a bandwidth of 500Hz and a receiver with a 6000Hz bandwidth is over 10db, With that said, the normal source levels (ref 1uPascal @ 1m) of Sonotronics' transmitters are as follows: PT-1 128-132db PT-2,3; IBT96-1,2 134-136db CT-82-2, CT-05-36, EMT-01-1 142-144db CHP87, DT97, EMT01-2 146-149db EMT-01-3 161-167db What detection range should I expect from my SUR? As mentioned in the FAQ above, this depends on several factors, including the losses in between transmitter and receiver, and the transmitter source level. Some real life examples follow: St. Claire River Near Detroit, MI. 6/23/2005: SUR deployed in 5 feet of water near the shore, depth increases to 50m, CT-05 suspended at 1m. Reliable detections at 400m. Lake Pleasant at Cave Creek, AZ: CHP transmitters detected regularly between 400m and 500m with an array of 6 SUR's. What range should I expect when manual tracking? Ranges stated in the Product Guide (up to 1km, up to 3km, etc.) are stated for manual tracking, using a narrow band receiver such as USR-23, and a directional hydrophone such as the DH-4, under ‘reasonable conditions’. These include calm sea states, and waters favorable to acoustic propagation. A few factors that reduce range include: Shallow environments - Environments in less than 10m of water can reduce the range you can achieve from acoustic transmitters. For example, transmitters with a range of up to 3km were detected at around 500m in 3m depth water. Temperature or Salinity stratified environments - When there is a temperature or salinity gradient in the water column where a transmitter is located, there is an effect called ray bending that occurs. Because the speed of sound in water is a function of temperature and salinity, you can end up with "layers" in which the speed of sound is different. Due to Snell's law, the sound signal is bent at the interface between each layer. The end result of this is that sound can be warped downward, reducing range. Additionally, a thermocline (distinct division between two temperature layers) may reduce ranges significantly: under extreme cases, sound may not reach the surface at all. One technique to overcome this is the use of an omnidirectional hydrophone (such as a TH-2) with a long cable to penetrate the thermocline. What is the difference between ultrasonic (acoustic) transmitters and radio transmitters, and when do you use each? Ultrasonic (acoustic) transmitters emit high frequency sound which propagates mechanically, while radio transmitters emit electromagnetic energy. Generally acoustic transmitters are preferred in deep (>5m) and/or conductive waters. Radio transmitters are preferred in shallow water, especially ‘babbling’ waters. What size transmitter should I use on the animals in my study? Common rule of thumb is the weight of the transmitter measured in water should not exceed 1.25% of the weight of the animal measured in air. In other words, taking the published “water-weight” of a transmitter, then multiplying by 80, will indicate the smallest weight animal to be tagged. Do you have any citations to support this data? Please reference the following for supporting data, and for general information: THE LIMITATIOINS OF FISH TRACKING SYSTEMS: ACOUSTIC AND SATELLITE TECHNIQUES . By 1. G. Priede, NOAA Technical Memorandum, published May 1986 D.L. BRUMBAUGH: AFS PRESENTATION ON ACOUSTIC TRACKING SYSTEMS. By D. L. Brumbaugh FISHERIES TECHNIQUES , edited by Larry Nielsen and David Johnson, available from American Fisheries Society

The Manufacture of Underwater Ultrasonic Tracking Equipment Since 1971 - Providing Exceptional Products with Proven Results. COMPANY Marlin Gregor President of Sonotronics, Inc. Goodbye to our best friend, favorite employee, and Sonotronics mascot, Marcus. You will be missed! – RIP Marcus Gregor 2022 <3 The Manufacture of Underwater Ultrasonic Tracking Equipment Since 1971 - Providing Exceptional Products with Proven Results. Sonotronics is a leader in the manufacturing of ultrasonic tracking equipment related to the underwater tracking of marine animals, equipment marking, and other marine applications. Sonotronics offers high performance Active Tracking Systems for real time. Specializing in implementing the latest technologies and providing Simple solutions for customers tracking needs. Sonotronics products include a wide variety of ultrasonic transmitters with various combinations of lifetime, size, range, and telemetry options. Sonotronics offers high performance manual tracking systems for real time determination of animal behavior. Sonotronics also offers automated stations for logging animal detections, including cellular uplink and web technologies.

Sonotronics is featuring the AVAR, Autonomous Vehicle Acoustic Receiver, adding acoustic transmitter detection and logging to unmanned marine vehicles. The AVAR may be operated as an independent unit for short term deployments using its on-board battery, or may be connected for long term power and real-time communications with an external controller. AVAR: AUTONOMOUS VEHICLE ACOUSTIC RECEIVER Sonotronics is featuring the AVAR, Autonomous Vehicle Acoustic Receiver, adding acoustic transmitter detection and logging to unmanned marine vehicles. The AVAR may be operated as an independent unit for short term deployments using its on-board battery, or may be connected for long term power and real-time communications with an external controller. Key specs: 30kHz – 100kHz 235mm x 64mm, 855grams RS232 Data Interface 300m rated 0 – 12VDC with rechargeable NiMH battery

Sonotronics Video Gallery - Videos showing use of Sonotronics equipment in and out of water, fish surgery, active acoustic tracking, and passive acoustic tracking. All Videos All Categories Play Video Play Video 00:23 Equipment Marking Transmitters | Sonotronics, Inc. Play Video Play Video 21:04 Fish Surgery | Sonotronics, Inc. Play Video Play Video 06:06 Unboxing the MANTRAK Kit | Sonotronics, Inc. Play Video Play Video 01:58 Underwater Diver Receiver | Sonotronics, Inc. Play Video Play Video 01:55 Underwater Diver Receiver Direction | Sonotronics, Inc. Play Video Play Video 01:11 Turning On/Off Your Sonotronics Transmitter Play Video Play Video 02:02 Setting up Sonotronics DH-4 Hydrophone Play Video Play Video 01:54 Underwater Diver Receiver Operation | Sonotronics, Inc. Play Video Play Video 03:01 Tracking Equipment Underwater | Sonotronics, Inc. Load More

Sonotronics Image Gallery This is how Sonotronics and Our Customers Are Making a Difference in the World we Share… Sonotronics Image Gallery This is how Sonotronics and Our Customers Are Making a Difference in the World we Share… “Marlin, Thank you for your extraordinary effort in helping us overcome deployment and technological challenges we face in Grand Canyon. Our sonic telemetry project to determine the impact of the March 2008 High Flow Event on rainbow trout movement in Lees Ferry was a success because of your and your staff’s determination. We were able to deploy 90 transmitters in rainbow trout, the smallest of which was 157mm. We detected these tags before and after the flow with manual tracking and by using the submersible ultrasonic receivers. Interestingly, tagged trout did not displace downstream during the high flow. Thank you for your good humor and determination through this challenging project!” — Kara D Hilwig “Just wanted to drop an email to say thanks for all your help with our order! We’re really happy with the tags we received and have just begun our deployments. Thanks again! — Clemency” “… Furthermore I would like to inform you of an AWESOME recent finding. One of the 260cm female lemon sharks that was equipped with a Sonotronics 4 year transmitter was detected on our SUR array in Bimini for multiple days at the end of May this year. This shark was tagged in Bimini on May 19th 2007 and has not been detected since then. This shark was therefore at liberty for 2 years and the transmitter was still working on her return to Bimini – MASSIVE THANK YOU to you and all your team.” — Tristan Guttridge, PhD Student, University of Leeds, UK From another happy Sonotronics Customer – “Thank you for taking my call. I always appreciate how well I am treated by the team at Sonotronics and I look forward to doing more good work with you in the amazing years to come!” “Just received the USR-96 receiver … Looks to be working perfectly… just one more reason why your customer service is top-notch.” “We are honored. #customer service ALWAYS a pleasure”. – Dr. Yannis Papastamatiou, @Dr_Yannis The following information has been submitted by researchers who have used Sonotronics’ products in their studies. We wish to thank the researchers who have contributed, adding to the knowledge base available to Sonotronics’ customers. Columbia River Redband Trout Study – Redband trout tracking in Twin Lakes, Washington conducted by Mike Biggs. Lake Pend Oreille Predation Study – Focuses on pelagic predator population estimate in relation to kokanee densities. Rainbow and Lake Trout. Idaho Dept of Fish and Game, Tom Bassista, Melo Maiolie, Mark Duclos, Bill Ament, Bill Harryman. BRIEF COMMUNICATIONS Acoustic telemetry to assess post-stocking dispersal and mortality of razorback sucker Xyrauchen texanus A. P. KARAM, B. R. KESNER AND P. C. MARSH Native Fish Laboratory, School of Life Sciences, Arizona State University Poster and Abstract presented by David March Morlà at the 2ndINTERNATIONAL SYMPOSIUM ON TAGGING AND TRACKING MARINE FISH WITH ELECTRONIC DEVICES held in San Sebastian in 2007 Letter and picture submitted by Dr. Sam Gruber “Hi Sonotronics” We now have 11- SUR’s and five transmitters ….Underwater receivers and other goodies! Thank you so much for taking care of all of this… We will send the equipment over to Bimini today with a National Geographic Society Team! We are very excited about the SUR’s and look forward to doing a LOT of interesting things. Thank you!!!” “doc” Sam Gruber First Trout below Hoover Dam and the last known Colorado pikeminnow (then known as squawfish) from Lake Mohave, submitted by Tom Burke, LCR-MSCP