ARC-620/E Airborne Radio Communication System

New generation of airborne radios are designed based on the SDR (Software Defined Radio) technology. Benefiting from the technology an appropriate infrastructure is provided for data transmission and establishing data link networks as well as improving technical specifications and stability in comparison with the old radios. ARC-620 is a VHF/UHF airborne Software Defined Radio in a way that it can be substituted with the ARC-1400 old radio properly. This radio can be installed inside various jetfighters, cargos, and helicopters. Proportionate to the plane, there are several different remote control systems installed inside the cockpit to perform control commands remotely

General specifications
Frequency range	UHF: 225-399.975MHz, VHF: 108-173.975MHz
Channel spacing	8.33KHz/12.5KHz/25KHz
Modulation type	AM:A3E, FM:F3E, ECCM:FSK
Data transmission	16kbps rate in the ECCM mode
Transmitting specifications
Output power	AM and FM modes: 20W ± 1dB
	ECCM mode: 100W peak ± 1dB
Input audio	Local:
	Unbalanced with 150Ω impedance and
	-35dBm to +10dBm power with
	capability of microphone bias
	Line:
	Balanced with 600Ω impedance and
	-15dBm to +10dBm dynamic range
Modulation factor	AM mode: at least 80%
	FM mode: ±5KHz frequency deviation in 25KHz
	channel spacing ±2.5KHz frequency deviation
	in 12.5KHz channel spacing
Modulation distortion	maximum 5%
	in environmental test condition:
	maximum up to 10%

Audio frequency response	300 to 3400 Hz
Side tone	in the AM mode: audio sampling from the
	antenna RF output signal
	In the FM and ECCM modes: control signal
	sampling from the antenna RF output signal
Harmonic rejection	better than -55dBc
Spurious signals	better than -80dBc
Output power stability	up to VSWR<2.5 against mismatch
Receiving specifications
Receiving sensitivity	AM mode: -103dBm for more than 10dB SINAD
	in detecting the 1KHz signal modulated with
	30% modulation factor
	FM mode: -108dBm for more than 10dB SINAD
	in detecting the 1KHz signal modulated with
	2.5KHz deviation
	ECCM mode: -90dBm for maximum 4×10-2 bit
	rate error
Squelch sensitivity	setting the squelch ON/OFF point is
	Accomplished in the range of 5 to 25dB output
	SINAD
Image frequencies rejection	-80dB
IF frequency rejection	-80dB
Selectivity	WIDEBAND: spurious signal rejection for
	±25KHz frequency offset is at least 60dB
	NARROWBAND: spurious signal rejection for
	±12.5KHz frequency offset is at least 40dB
Audio distortion	maximum 5%
Audio frequency response	300 to 3400 Hz
Receiver input protection	Receiver input is protected against applying
	1W (+30dBm) signal in/out of the band
	permanently
Environmental Specifications
Operating temperature	-40°C to +65°C
Humidity	according to the MIL-STD~810F method
	(4 and 507)
Vibration test	casual vibration in the range of 15~2000Hz for
	T/R with 0.03g2/Hz vibration amplitude in the
	range of 300 to 1000 Hz according to the
	MIL-STD-810F
Mechanical shock test	according to the IDS810-17 and IDS1371 Iran
	Defense Standard
Electromagnetic compatibility	MIL-STD-461E
Height test	according to the IDS810-17 and IDS1371 Iran
	Defense Standard

Catalog

Attachment	Size
chapter 6-11(9)_268.pdf	442.18 KB
chapter 6-11(10)_269.pdf	181.54 KB

No.

268