Test Set News and Updates
REPAIR and CALIBRATION SUPPORT
Repair and Calibaration Support
Our Repair & Calibration team is available to assist with factory repair services, calibration scheduling, repair status inquiries, warranty questions, service estimates, and general service-related requests.If you require technical assistance operating your equipment, please visit our Technical Support page.
Complete the form below if you have general questions on the repair and calibration process and a member of our Repair & Calibration team will respond as soon as possible. A confirmation email will be sent upon successful submission of your request.
If you are ready to return equipment for factory repair, calibration, or warranty evaluation, please complete our Return Material Authorization (RMA) Request before shipping your equipment.
Contact the Repair and Calibration Department
T-47M5-4530 Technical Bulletin GPS Roll-Over
Tel-Instrument has posted a Technical Bulletin covering the T-47/M5, TS-4530A and T-4530i IFF Test Sets. The TB details a growing issue with legacy GPS modules which may impact your test set. Please navigate to the Service Bulletins - General Information menu page to download a copy of the Technical Bulletin and further information or click below to go to the page directly:
Service Bulletin - General Information
Service Bulletin - General Information
Technical Bulletin T-47M5 and 4530 Products 10-14-25
To provide owners and operators of the Tel-Instrument Electronics Corp. T-47/M5 and TS-4530A and T-4530i IFF Test Sets of details on an upcoming problem with the Trimble GPS module which may cause a GPS Roll Over that can affect the GPS stored date (year) acquired utilizing GPS as the time source.
May 15 2025 - Update to Tel-Instrument Products
Product Obsolescence Notice. AN/USM-708/719, TR-220, TR-36, TR-100AF, T-47NH, T-47G, AN/APM-480A, TR-420, AN/ARM-206 and T-76/76-2 and effective April 15, 2025.
To our valued customers,
Tel-Instrument Electronics Corp (TIC) is having increasing difficulty in sourcing parts for many of its older commercial and military avionic test sets, most of which were introduced over 20 years ago. Due to the obsolescence of these parts, TIC as a result, will discontinue production on these test sets effective April 15, 2025. We have secured sufficient spare parts for these units to allow for continued product support for an estimated 3-year period.
To our valued customers,
Tel-Instrument Electronics Corp (TIC) is having increasing difficulty in sourcing parts for many of its older commercial and military avionic test sets, most of which were introduced over 20 years ago. Due to the obsolescence of these parts, TIC as a result, will discontinue production on these test sets effective April 15, 2025. We have secured sufficient spare parts for these units to allow for continued product support for an estimated 3-year period.
TB-2100 Discontinuance Notice
Product Discontinuation Notification
October 12, 2017
To Our Valued Customers,
This letter serves as formal notification that Tel-Instrument Electronics Corp. has discontinued support, repair, and parts supply for the following Test Set:
TB-2100 ATC/DME/Mode S Test Set
P/N 90000106
Tel-Instrument Electronics Corp. acknowledges the obligation to promptly inform our customers of the intent to exit products and provide an alternative product exceeding the former Test Sets capability; but at this time there is no direct replacement for the TB-2100.
The TB-2100 Test Set was first introduced in 2003, and due to the age of the existing hardware, many components have been discontinued and no longer available for purchase or repair. As these circumstances are beyond our control Tel-Instrument will still continue to support the TB-2100 if no parts or repairs are needed as follows.
October 12, 2017
To Our Valued Customers,
This letter serves as formal notification that Tel-Instrument Electronics Corp. has discontinued support, repair, and parts supply for the following Test Set:
TB-2100 ATC/DME/Mode S Test Set
P/N 90000106
Tel-Instrument Electronics Corp. acknowledges the obligation to promptly inform our customers of the intent to exit products and provide an alternative product exceeding the former Test Sets capability; but at this time there is no direct replacement for the TB-2100.
The TB-2100 Test Set was first introduced in 2003, and due to the age of the existing hardware, many components have been discontinued and no longer available for purchase or repair. As these circumstances are beyond our control Tel-Instrument will still continue to support the TB-2100 if no parts or repairs are needed as follows.



