Relay Compositions of DTV Relay Stations

Product code: 6847GB/GC/GD/GE

Models

Product code	Type of function	Pet name
6847GB	2 adjacent waves	FI2MF2
6847GC	3 adjacent waves	FI2MF3
6847GD	4 adjacent waves	FI2MF4
6847GE	5 adjacent waves	FI2MF5

Performance

Range of frequency	Specified channel of UHF band Offset:1/7MHz (≈ 143kHz)
Band width	Fc ± 2.79MHz
Insertion loss	5.2dB or less
Pass band ripple	1.0dB or less
Input and output impedance	50Ω
Input return loss	18dB or more
Attenuation feature	10dB or more at Fc ± 4.36MHz
	25dB or more at Fc ± 9MHz
	35dB or more at Fc ± 12MHz
Group delay characteristic	100nsp-p or less
Isolation	Adjacent type : 40dB or more Non-adjacent type :30dB or more.
Coupling for monitor	20dB ± 3dB or less (depends on specification.)
Maximum input power	1W
Environmental requirements	Temperature	-10°C to +45°C (Range for in-spec)
		-20°C to +60°C (Range for spec restorable)
	Humidity	45% to 90%RH (Without dew.)

Structure

[Adjacent 4 waves]

[Adjacent 8 waves]

Connector

Input connector: TNC type FEMALE (nickel plating)
Output connector: TNC type FEMALE (nickel plating)
Monitor connector: BNC type FEMALE (nickel plating)

Externals

480(W) x 49(H) x 400(D) mm: 2 waves to 4 waves
480(W) x 99(H) x 400(D) mm: 5 waves to 8 waves