Technical information

Diplexers, Filters & Passives
For indoor use only.
FP/FM
Fracarro FM Filter >-50dB to -55dB.
M-F PAL 9.5mmØ connectors.
FS/FM
Fracarro Masthead Filter, >-40dB to -50dB. Screw
and saddle terminals.
Eliminate FM radio interference. Amplifiers increase
harmonics with harmful 88–108MHz harmonics often falling
in TV band 3.
FM (88–108MHz) REJECTION FILTERS
FM50FV >-50dB FM filter, 88–108MHz, F type connectors.
NOTCH FILTERS
Tech Tip:
SF4/SF5 can be used to stop local broadcasts not required from interfering
with UHF modulator channels, Analogue or Digital.
SF4 Band 4, 2 x -20/30dB notches, user tunable.
SF5
Band 5, 2 x -20/30dB notches, user tunable. Power
pass SF5 only!
Two independent filters within each SF permit either 2
frequencies to be attenuated or twice the attenuation on
one frequency. Tuning is easiest with a noise generator and a
meter with a spectrum function.
FILTER HOUSINGS
FH1
Empty case with PAL Male and Female
connectors, 7mmØ trimmer hole. Build your own
filters etc.
FH2
Empty case with 3 x F Female connectors. Highly
screened suits use with higher power levels. Build
your own mixers.
Catalogue 106
85