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Transponders

ATA · 347 parts

Transponders brings together the parts, hardware, and consumables your maintenance program calls out for this system. Each listing shows its condition and the certification paperwork available for that part, from new PMA/OEM stock to overhauled and serviceable units, so you can confirm airworthiness before buying and request an FAA 8130-3 or manufacturer Certificate of Conformance where one applies.
STX-165 Adapter Plate 306103-00
STX-165 Adapter Plate 306103-00
NE
P/N 306103-00 Sandia
$106.70
Price and availability checked Oct 22, 2026 MST
In stock
Stx 360 Sentinel Mode C Transponder/Uat Ads-B In & Out 306430-00
Stx 360 Sentinel Mode C Transponder/Uat Ads-B In & Out 306430-00
NE
P/N 306430-00 Sandia
$2,962.38
In stock
Alt Encoder/30K/Nano/Narco SSD120-30N(MOD.1)
Alt Encoder/30K/Nano/Narco SSD120-30N(MOD.1)
NE
P/N SSD120-30N(MOD.1) Trans-Cal Industries
$460.75
Price and availability checked Oct 22, 2026 MST
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Nano Encoder/30K/RS232/10FT Resolution SSD120-30N-RS
Nano Encoder/30K/RS232/10FT Resolution SSD120-30N-RS
NE
P/N SSD120-30N-RS Trans-Cal Industries
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SSD120-30N-RS1/Nano Encoder/30 SSD120-30N-RS1
SSD120-30N-RS1/Nano Encoder/30 SSD120-30N-RS1
NE
P/N SSD120-30N-RS1 Trans-Cal Industries
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Encoder/Nano/30K/RS232 SSD120-30N-RS232
Encoder/Nano/30K/RS232 SSD120-30N-RS232
NE
P/N SSD120-30N-RS232 Trans-Cal Industries
$614.98
Price and availability checked Oct 22, 2026 MST
In stock
Encoder/5 Channels RS232/30K SSD120-30N-RS5
Encoder/5 Channels RS232/30K SSD120-30N-RS5
NE
P/N SSD120-30N-RS5 Trans-Cal Industries
$805.10
Price and availability checked Oct 22, 2026 MST
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Encoder/5 Channels RS232/30K SSD120-30NE-RS5
Encoder/5 Channels RS232/30K SSD120-30NE-RS5
NE
P/N SSD120-30NE-RS5 Trans-Cal Industries
$959.33
Price and availability checked Oct 22, 2026 MST
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Encoder/30K/Nano/E/RS232 SSD120-30NE-RS232
Encoder/30K/Nano/E/RS232 SSD120-30NE-RS232
NE
P/N SSD120-30NE-RS232 Trans-Cal Industries
$948.66
Price and availability checked Oct 22, 2026 MST
In stock
Nano Encoder/30K Feet Max altitude, RS232 interface with Mod 1 for Narco transponders models AT-5, AT-5A, AT-6, AT-6A, AT-50 and AT-50A SSD120-30N-RS232 M 1
Nano Encoder/30K Feet Max altitude, RS232 interface with Mod 1 for Narco transponders models AT-5, AT-5A, AT-6, AT-6A, AT-50 and AT-50A SSD120-30N-RS232 M 1
NE
P/N SSD120-30N-RS232 M 1 Trans-Cal Industries
$563.57
Price and availability checked Oct 22, 2026 MST
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Nano Encoder/35K/RS232/10FT Resolution SSD120-35N-RS
Nano Encoder/35K/RS232/10FT Resolution SSD120-35N-RS
NE
P/N SSD120-35N-RS Trans-Cal Industries
$695.49
Price and availability checked Oct 22, 2026 MST
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Nano Encoder/35K/1 FT Resolution SSD120-35N-RS1
Nano Encoder/35K/1 FT Resolution SSD120-35N-RS1
NE
P/N SSD120-35N-RS1 Trans-Cal Industries
$776.00
Price and availability checked Oct 22, 2026 MST
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Nano Encoder/35K/RS232 SSD120-35N-RS232
Nano Encoder/35K/RS232 SSD120-35N-RS232
NE
P/N SSD120-35N-RS232 Trans-Cal Industries
$729.44
Price and availability checked Oct 22, 2026 MST
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Encoder/5 Channels RS232/35K SSD120-35N-RS5
Encoder/5 Channels RS232/35K SSD120-35N-RS5
NE
P/N SSD120-35N-RS5 Trans-Cal Industries
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Encoder/5 Channels RS232/35K SSD120-35NE-RS5
Encoder/5 Channels RS232/35K SSD120-35NE-RS5
NE
P/N SSD120-35NE-RS5 Trans-Cal Industries
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Encoder/35K/Nano/RS232 SSD120-35NE-RS232
Encoder/35K/Nano/RS232 SSD120-35NE-RS232
NE
P/N SSD120-35NE-RS232 Trans-Cal Industries
$1,209.59
Price and availability checked Oct 22, 2026 MST
Backorder
Xpndr #1 Install Sub-Kit 89400018-142 — photo coming soon
Xpndr #1 Install Sub-Kit 89400018-142
NE
P/N 89400018-142 Bendix
$3,359.99
In stock
Xpndr #2 Install Sub-Kit 89400018-143 — photo coming soon
Xpndr #2 Install Sub-Kit 89400018-143
NE
P/N 89400018-143 Bendix
$2,752.01
Price and availability checked Oct 22, 2026 MST
In stock
Nano Encoder/42K/RS232/10FT Resolution SSD120-42N-RS
Nano Encoder/42K/RS232/10FT Resolution SSD120-42N-RS
NE
P/N SSD120-42N-RS Trans-Cal Industries
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Nano Encoder/42K/1 FT Resolution SSD120-42N-RS1
Nano Encoder/42K/1 FT Resolution SSD120-42N-RS1
NE
P/N SSD120-42N-RS1 Trans-Cal Industries
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Nano Encoder/42K/RS232 SSD120-42N-RS232
Nano Encoder/42K/RS232 SSD120-42N-RS232
NE
P/N SSD120-42N-RS232 Trans-Cal Industries
$1,106.77
Price and availability checked Oct 22, 2026 MST
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Encoder/5 Channels RS232/42K SSD120-42N-RS5
Encoder/5 Channels RS232/42K SSD120-42N-RS5
NE
P/N SSD120-42N-RS5 Trans-Cal Industries
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Encoder/42K/Nano/E/RS232 SSD120-42NE-RS232
Encoder/42K/Nano/E/RS232 SSD120-42NE-RS232
NE
P/N SSD120-42NE-RS232 Trans-Cal Industries
$1,509.32
Price and availability checked Oct 22, 2026 MST
Backorder
Encoder/5 Channels RS232/42K SSD120-42NE-RS5
Encoder/5 Channels RS232/42K SSD120-42NE-RS5
NE
P/N SSD120-42NE-RS5 Trans-Cal Industries
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