Dumb antenna question

[old_tv_nut]

Originally Posted by luRaichu

As pictured, this person's UHF TX uses the same cheap chinesium RF amp as mine. At first I thought they had both lowpass+hipass filters attached (bandpass) on the RF input but they may be impedance matching devices?

Honestly I'm not sure if impedance matters on the RF amp input. The mentioned blog post on this amp only mentions output antenna impedance of being particularly important.

They could also be attenuators if the modulator output overdrives this amp.