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IFR ATC-600A Transponder Test Set
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Transponder;
Frequency Range:1030MHz+-0.006%,
Level:Variable from -66dBm - -79dBm,+-1.5dBm with 34dB pad or radiated with propererly spaced antenna,
Modes:A/C Altitude or pilot Code,2:1 interlace,or mode A,(B mode available on request),
Pulse Spacing:Mode A P1 to P3 8us+-0.1us,Mode C P1 to P3 21us+-0.1us,
PRF:235MHz+-10%,
SLS Test:+-1.0dB P2 insterted at 0dB or -9dB relative to P2,
Reply Measurements;
Power:10W to 1.5kWpeak,+-20%;direct with 34dB pad,+-3dB radiated with properly spaced antenna,
Frequency check:1086 to 1093MHz,+-0.3MHz,
Altitude Code:Binary and Numerical Readout,-1.0 to 126.7thousand feet,
Pilot Code:Binary and Numerical Readout,000 to 7777,
Percent Reply:0 to 100%,either A/C or A(B) mode,
F2 Pulse Position:Measurement of rising and falling edge +-0.5us from nominal,+-0.05us,
Status Lamp:Ident Pulse,Invalid Altitude Code and No Altitude Code,

Power:102 to 120VAC,50Hz to 400Hz,<10% of the nominal voltage,24W,
Dimentions:290mm(W)-130mm(H)-410mm(D),
Weight:8.1kg

Self Test OK
left LED segment fail
Manual,34dBPAD,Power Code