BANDPASS FILTERS FOR SOUND
TRANSMISSION ON TV LINKS
It is often desirable for operators of video links to utilise the spare bandwidth above the video band
to carry radio or telephony channels. These channels are modulated onto sub-carriers, often in pairs.
The filters offered in this range are for the separation of the sub-carrier channels from the video
band. They are designed on centre frequencies of 6.20, 6.80, 7.02, 7.50, 8.065, 8.59 and 10.70 MHz.
The passband and stopband widths are shown below. The group delay is approximately parabolic in
shape about the centre frequency.
Similar filters with other centre frequencies, bandwidths or impedances may be available on
request.
Order Code
BN0620A
BN0680A
BN0702A
BN0750A
BN0807A
BN0859A
BW0620A
BW0680A
BW0702A
BW0750A
BW0807A
BW0859A
Centre Freq.
MHz
Passband Width
MHz
Stopband
30 dB
Bandwidth
40 dB
6.200
6.800
7.020
7.500
8.065
8.590
6.200
6.800
7.020
7.500
8.065
8.590
0.25
0.25
0.25
0.25
0.25
0.25
0.50
0.50
0.50
0.50
0.50
0.50
0.80
0.80
0.80
0.80
0.80
0.80
1.50
1.50
1.50
1.50
1.50
1.50
1.00
1.00
1.00
1.00
1.00
1.00
2.00
2.00
2.00
2.00
2.00
2.00
Impedance
Temperature Range
Aqueous Washable
Package
75 ohms
0°C to 70°C
No
DR00009B
© Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice
FARA167d
Page 1 of 2
Dec-99(A)
FARADAY [ FARADAY TECHNOLOGY ]
