ECM Monolithic Crystal Filters
21.4MHz Series
§ Monolithic Crystal Filters
§ For I.F Selection in VHF & UHF Systems
§ Cost Effective Design
§ Rugged Construction
§ Custom Options Available
Type
F21M08A
F21M08B
F21M08C
F21M08D
FT21M08D
F21M08AU
F21M08BU
F21M08CU
F21M08DU
F21M08DL
FT21M08DU
F21M12BU
F21M12CU
F21M12DU
F21M12DL
FT21M12DU
F21M15A
F21M15B
F21M15C
F21M15D
FT21M15D
FT21M15D2
F21M15AU
F21M15BU
F21M15CU
F21M15DU
F21M15DL
FT21M15DU
Centre
Frequency
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
21.4MHz
Channel
Spacing
12.5kHz
12.5kHz
12.5kHz
12.5kHz
12.5kHz
12.5kHZ
12.5kHz
12.5kHz
12.5kHz
12.5kHz
12.5kHz
20.0kHz
20.0kHz
20.0kHz
20.0kHz
20.0kHz
25.0kHz
25.0kHz
25.0kHz
25.0kHz
25.0kHz
25.0kHz
25.0kHz
25.0kHz
25.0kHz
25.0kHz
25.0kHz
25.0kHz
Number
Of Poles
2
4
6
8
8
2
4
6
6
6
3
3
6
8
8
8
2
4
6
8
8
8
2
4
6
8
8
8
Passband
Width
3dB +/-3.75kHz
3dB +/-3.75kHz
6dB +/-3.75kHz
6dB +/-3.75kHz
3dB +/-3.75kHz
3dB +/-3.75kHz
3dB +/-3.75kHz
6dB +/-3.75kHz
6dB +/-3.75kHz
6dB +/-3.75kHz
3dB +/-3.75kHz
3dB +/-6.00kHz
6dB +/-6.00kHz
6dB +/-6.00kHz
6dB +/-6.00kHz
3dB +/-6.00kHz
3dB +/-7.50kHz
3dB +/-7.50kHz
6dB +/-7.50kHz
6dB +/-7.50kHz
3dB +/-7.50kHz
3dB +/-7.50kHz
3dB +/-7.50kHz
3dB +/-7.50kHz
6dB +/-7.50kHz
6dB +/-7.50kHz
6dB +/-7.50kHz
3dB +/-7.50kHz
Termination
Impedance
900Ω//4pF
1300Ω//2pF
1300Ω//2pF
1300Ω//2pF
910Ω//15pF
900Ω//7pF
900Ω//2pF
900Ω//3pF
900Ω//4pF
900Ω//4pF
470Ω//15pF
1500Ω//2pF
1500Ω//1pF
1500Ω//1pF
1500Ω//1pF
470Ω//15pF
900Ω//5pF
1000Ω//2pF
1200Ω//1.5pF
1200Ω//2pF
910Ω//15pF
910Ω//15pF
1500Ω//2pF
1500Ω//1pF
1500Ω//1pF
1500Ω//1pF
1500Ω//1pF
470Ω//15pF
Case Style
HC49/U
HC49/U x 2
M-104
M-105
M-106
UM-1
UM-1 x 2
M-107
M-107
M-108
M-110
UM-1 x 2
M-107
M-107
M-108
M-110
HC49/U
HC49/U x 2
M-104
M-105
M-106
M-109
UM-1
UM-1 x 2
M-107
M-107
M-108
M-110
ECM Electronics Limited, Penmaen House, Ashington, West Sussex, RH20 3JR, UK
Tel: +44(0)1903 892810: Fax: +44(0)1903 892738. Email: ecm@ecmelectronics.co.uk
Although we have attempted to accurately reflect the products we market. ECM reserve the right without prior notice to
discontinue any product or make design changes we believe necessary.
Issue 1
