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July 2025
TCAS-201
VIAVI/Aeroflex TCAS-201, TNC Female Connector, TCAS Transponder Antenna Coupler
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
✔ Free Domestic Ground Shipping
✔ NIST Calibration Available
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
VIAVI TCAS-201 TCAS Transponder Antenna Coupler
The VIAVI TCAS-201 TCAS Transponder Antenna Coupler is a directional RF coupling device for avionics automations. It enables shielded testing of airborne collision avoidance and surveillance equipment in industrial facilities. This antenna coupler supports automated end of line verification of TCAS and transponder systems. The TCAS coupler operates at 1030 MHz and 1090 MHz for interrogation and reply channels. It presents controlled coupling with insertion loss of 15.5 decibels across the operating frequencies. The return loss is accorded as more than 9 decibels to ensure a well-matched interface in certified avionics test equipment. Its isolation is greater than 20 decibels with RF energy within the maintenance area and minimizes external interference.
The TCAS-201 delivers repeatability more than 1 decibel for stable automated measurements. Its performance supports consistent capture of ERP and minimum triggering level data during regulated maintenance procedures. The unit’s bearing accuracy of more than 10 degrees typical supports verification of directional antenna performance under controlled conditions. Its maximum bearing error of 18 degrees provides a clearly defined limit for compliance evaluation tasks. It is designed to accommodates both phase and amplitude type directional antennas used in modern TCAS installations. Its lower antenna adjustable support pole aligns the active aperture with the TCAS-201 coupling structure. The unit accepts antenna diameters up to 9.25 inches and oval spans to 11 inches. It supports maximum antenna height of 2 inches for common commercial TCAS and combined transponder antenna formats.
Mechanical construction of this TCAS-201 supports robust operation in industrial maintenance workflows. Its body has a 19-inch diameter to surround the aircraft antenna footprint during testing. The RF interface of the unit uses a TNC female connector, this connector supports secure attachment of precision coaxial leads between the coupler and approved ramp test sets. Its standard configuration includes attenuator hardware and extension poles suited for varied aircraft geometries and mounting heights. Its optional monopole extension elements support specialized calibration setups defined by strict engineering procedures. The transponder antenna coupler integrates into automated test stands through deterministic performance characteristics. The TCAS-201 transponder supports validation of TCAS and transponder functions without radiating significant power into open air. It simplifies periodic surveillance testing sequences is executed under computer control in industrial maintenance hangars. The unit’s known insertion loss and isolation values allow compensation within test software for accurate field strength calculations.
| Model | TCAS-201 |
|---|---|
| Manufacturer | VIAVI / Aeroflex |
| Part Type | Transponder Antenna Coupler |
| Frequency | 1030 MHz, 1090 MHz |
| Return Loss | 9 dB |
| Bearing Accuracy | ±18° max, < ±10° typical |
| Connector | TNC female |
| Kit with transit case | 24.81 × 24.98 × 14.15 in (63 × 63.45 × 35.94 cm) |
| Weight | 11 lbs (4.9 kg) |
| Isolation | 20 dB |
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