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Transponders / Encoders

 
Becker BXP 6401–1–01
Becker BXP 6401–2–01
Becker BXP 6402–1R(01)
Trig TT21
Trig TT22
Sandia STX 165
  Becker BXP 6401 Becker BXP 6401 Becker BXP 6402 Trig TT21 TT22 Trig TT21 TT22 STX 165
Nominal Output Power (measured at rear connector)
250 Watts
150 Watts
250 Watts
130 Watts
250 Watts
200 Watts
Altitude Encoder
Requires External
Requires External
Requires External
Built–In
Built–In
Built–In
Mode
Mode S
Mode S
Mode S
Mode S
Mode S
Mode C
Class
Class 1
Class 2
Class 1
Class 2
Class 1
Level
Level 2 es
Level 2 es
Level 2 es
Level 2 es
Level 2 es
Maximum Altitude
50,000′
15,000′
50,000′
15,000′
35,000′
35,000″
Input Voltage
10 to 33 VDC
10 to 33 VDC
10 to 33 VDC
9 to 33 VDC
9 to 33 VDC
11 to 32 VDC
Input Current (standby)
0.22 A at 14 V
0.22 A at 14 V
0.18 A at 14 V
0.15 A at 14 V
0.15 A at 14 V
Input Current (typical)
0.43 A at 14 V
0.43 A at 14 V
0.35 A at 14 V
0.28 A at 14 V
0.28 A at 14 V
Dimensions
61x61x218.5
2.4″x2.4″x8.6″
61x61x218.5
2.4″x2.4″x8.6″
61x61x218.5
2.4″x2.4″x8.6″
Controller: 45 x 45 x 64 mm
Transponder: 62 x 45 x 141 mm
Controller: 45 x 45 x 64 mm
Transponder: 62 x 45 x 141 mm
1.78″ x 3.5″ x 7.34″
(4.52cm x 8.89cm x 18.64cm)
Weight
~800 g 1.76 lbs.
~800 g 1.76 lbs.
~700 g 1.54 lbs.
~440 g .97 lbs
~440 g .97 lbs
~590 g 1.30 lbs.
Certification
EASA, FCC certificated (ETSO–2C112a, Level 2es)
EASA, FCC certificated (ETSO–2C112a, Level 2es)
EASA, FCC certificated (ETSO–2C112a, Level 2es)
ETSO C88A, C112C, C166A and TSO C88b, C112c, C166b, approved for IFR and VFR fligh
ETSO C88A, C112C, C166A and TSO C88b, C112c, C166b, approved for IFR and VFR fligh
DO160F DO 178B Level C DO178B Level C TSO C74d TSO D88b (Encoder)

Transponders are used in general aviation. Wings and Wheels specializes in smaller transponders especially designed for instrument panels with less space. effective February 2012 the glider VFR code is 1202. you have many options to consider before purchasing:
• If panel space is limited maybe consider having a remote head.
• Class 1 or Class 2 depending on altitude requirements (Note: W&W recommends installing a Class 1)
• Integrated or external altitude encoder.
• 1090ES/ADS-B data in and data out capable
• power consumption