Fixed value “in line” F connector attenuator
Male F conn to Female F conn (also available in CoAx)
Available in 6dB or 9/10dB values
5 to 1000 MHz
See article on attenuators
Attenuators can be useful in discovering if you have sufficient signal to use a splitter (as opposed to an amplifier). If your signal is still fine with one of these inline (see through loss of splitters) a splitter will be fine, an amplifier is not required.
NOTE : purchasing a 6db and a 10dB fixed value attenuator gives the option of 6db or 10dB or 16dB total attenuation, this is an alternative to a variable attenuator.