The RCR-650A is a TSO'd, solid state, panel mounted ADF receiver. The Collins RCR-650A ADF Receiver is the upgraded ADF for thewell-regarded Collins Microline series. The RCR-650A has a number of modifications from the RCR-650 to boost its sensitivity and reduceinterference.
The Collins RCR-650A ADF Receiver may be used with the following equipment:
- Collins IND-650A ADF Indicator
- Collins ANT-650A Combined Loop / Sense ADF Antenna
- Panel-mounted ADF receiver that provides relative bearing center line of aircraft and selected ground station
- Provides output to aircraft audio system for verifying station identifier and AM reception
- Solid-state band switches
- Digital tuning eliminates the need to "zero beat" tune
- Built-in self-test function
- Internal lighting
- Has single/concentric power/volume knob, ident filter, and mode control
- Used with ANT-650A combined-loop sense antenna
- Used with IND-650/650A single-pointer ADF indicator
- Can be used with ARINC standard RMI with ADA-650 RMI adapter
- Similar to RCR-650 but has product improvement for increased accuracy and reliabilility (RCR-650/650A are not interchangeable due to difference in size)
- FAA TSO: C41c
- Environmental: Category GAPAAAEXXXXX DO-138
- Dimensions: 1.750"H x 6.250"W x 10.82"L
- Weight: 3.0 lbs.
- Altitude: 30000 ft. max.
- Temperature: -15 to +71C (operation)
- Frequency Range: 200-1799 kHz in 1-kHz steps
- Selectivity: 6dB, 2.6 kHz min; 80dB, 14kHz max
- Spurious response: 80dB below reference output
- IF rejection: 80dB min
- Audio response: Not more than 9dB variation from 350-1400Hz
- Audio output: 50mW min intoo 500 ohms
- ADF bearing accuracy: Signal between 70 uV per meter and 0.5V per meter shall produce not more than +-3 deg. bearing error
- Bearing indicator speed: Not more than 7 seconds for 175 deg. bearing rotation for all signal levels between 70 uV per meter and 0.5V per meter
- Output drive level: +-2.5Vdc min into 20.5 +-10% ohm load
- Quadrantal error adjust: +-15 deg. nominal, front panel adjust
