HHKJ2000T Transceiver

HHKJ2000T Transceiver represents the latest generation of VHF air-ground communication equipment designed independently by our company. Possible applications range from civil aviation air-ground communication to air traffic control system. The transceiver is an important unit in the multi-transmit and multi-receive communication command system apart from VHF filter, antenna spliter, antenna combiner, and VHF co-pole antenna.

General characteristics

Frequency range	118 MHz ～ 144 MHz（118 MHz ～ 156 MHz optional）
Frequency error	±1×10-6
Channel spacing	25 kHz/12.5 kHz /8.33 kHz
Modulation type	AM（A3E）
Work mode	semi-duplex
Antenna connector	N female，50Ω，common TX/RX antenna； BNC female，50Ω，separate RX antenna
Power supply	AC 220 V±22 V，50 Hz±5 Hz； DC 24 V±2.4 V
Operating temperature	-20 ℃ ～ +55 ℃
Storage temperature	-30 ℃ ～ +70 ℃
Relative humidity	95%， at +40 ℃±2 ℃
Dimensions	482 mm×133 mm×536 mm（with handles）
Weightn	18 kg

Receiver

Receive sensitivity	≤1.5 μV
Selectivity	±7.5 kHz/6 dB，±25 kHz/80 dB
Squelch	setting range （S+N）/N 8 dB ～ 15 dB
Image frequency rejection	≥80 dB
Intermediate frequency rejection	≥100 dB
Adjacent channel rejection	≥75 dB
Intermodulation response rejection	≥70 dB
Oscillator reradiation	≤-90 dBm
Desensitization rejection	≥80 dB
AF response	-3 dB ～ +1 dB
Audio distortion ≤5% AF outputs Line output	0 dBm±1.5 dBm nominal,-12 dBm ～ 0 dBm settable

Transmitter

RF carrier power	50 W（10 W ～ 50 W settable）
Modulation depth	30% ～ 90% ，limiter at 99%
AF response	-3 dB ～ +1 dB
Modulation distortion	≤5%
Harmonic emission	≥80 dBc
Spurious emission	≥90 dBc
Adjacent channel power	≤-60 dBc
Spurious frequency offset	≤2 kHz
Carrier noise level	≤-45 dB