Part #: 822-1111-001
Model: VHF-21C
NSN: |
|
OEM: |
Collins Aerospace |
Desc: |
8.33 VHF Comm |
Part Number :
Select part number above to view pricing and availability.
VHF-21C
Image shown is VHF-22A due to similarities in appearance between units.
FEATURES
- Proline II remote-mounted, multichannel VHF voice transceiver providing AM voice communications in the frequency range from 118.000-135.975 in 8.33 kHz increments
- Intended as direct replacement for VHF-20 and VHF-20A units
- Can be used with Proline II CTL-22C control
- Accept either 2-out-of-5 parallel or RS-422A serial digital tuning data from frequency control unit
SPECIFICATIONS
| Weight: | 4.7 lbs. | Dimensions: | 3.75"W x 3.36"H x 14.0"L |
| FAA TSO: | C37c, C38c | EUROCAE: | ED-23, ED-24 |
| FCC: | Part 15, Part 87 | Environmental: | DO-160A, categories /A2E1/B/JY/ EXXXXXXZ/BZ/AZA, EUROCAE ED-14A |
| Temperature: | -54 to 70C (operational) | Altitude: | 70000 ft. |
| Frequency Stability: | +-0.0015% | Frequency control: | CSDB or ARINC 2-out-of-5 |
| Power Requirements: | Receive- 0.5A (14W) at 27.5 VDC; Transmit- 6.0A (165W) at 27.5 VDC | Output Power: | 16W minimum into a 52 ohm resitive load |
| Modulation: | 85% modulation capability with less than 15% distortion; 95% limiting | Sidetone: | 100 mW into 600 ohm load |
| Duty cycle: | 1-minute transmit; 4-minute receive | Receiver Sensitivity: | 3 uV for 6dB (s+n)/n |
| Receiver Selectivity: | Typical 6dB at +-8 kHz, 60dB at +-17 kHz | AGC: | 3dB max variation, 5uV to 1V |
| Part Number | VHF Communications Transceiver Description: |
|---|---|
| 822-1111-001 | See details above |
| Serial # | 5709 |
|---|---|
| Condition | OH |
| Mods | 1-5,9-11,13-17,19,21,26,29 |
| Tag Date | 11/17/20 |
| Shop | Southeast Aerospace Inc. |
822-1111-001
- 8.33 VHF Comm
| Price | Condition | Status |
|---|---|---|
| $3,150.00 | OH OUTRIGHT | 1 IN STOCK |
| $1,295.00 | OH EXCHANGE | 1 IN STOCK |
Click on a question below to see the answer. If you have a question about this model that is not answered below, please contact questions@seaerospace.com
What is the 8.33 in relation to avionics?
8.33 refers to the kilohertz (kHz) channel spacing for VHF communications radios required in certain types of airspace. Normal channel spacing for VHF comm radios is 25 kHz. Currently, 8.33 kHz channel spacing is only required above FL195 (19500 ft.) in the ICAO European region as of 15 March 2007.
8.33 channel spacing was introduced and implemented to help reduce VHF communication overlap and congestion in high traffic areas in Europe. With dividing 25 kHz by 3 (thus 8.33), many new communication frequencies were created. Only very specific radio equipment is capable of channeling, transmitting, and receiving in 8.33 kHz increments. Some of the more popular systems include the Rockwell Collins VHF-21/22/422/C/D and Bendix/King KX-165A (-0201), KY-196B. The Garmin GNS-430/530 series systems are capable of 8.33 also.
8.33 channel spacing was introduced and implemented to help reduce VHF communication overlap and congestion in high traffic areas in Europe. With dividing 25 kHz by 3 (thus 8.33), many new communication frequencies were created. Only very specific radio equipment is capable of channeling, transmitting, and receiving in 8.33 kHz increments. Some of the more popular systems include the Rockwell Collins VHF-21/22/422/C/D and Bendix/King KX-165A (-0201), KY-196B. The Garmin GNS-430/530 series systems are capable of 8.33 also.
What unit replaces the VHF-20A for 8.33 kHz requirements?
