Video amplifiers as HF mulitcouplers

[CALNNC]

Video amplification takes a bit of bandwidth, NTSC around 5Mhz or so, 1080, 37Mhz. Has anybody experiments with using a video amp/splitter intended for use with one video source on its input and multiple TV's or recorders on the outputs, and used instead as an amplifier and splitter to feed signals from an antenna into multiple HF receivers? Are the video amp/splitters looking for a certain input signal level, where the common microvolt signal levels on an antenna feedline would not even be seen by the input amp?

[betwixt]

It will work but you would be disappointed with the results. The kind of amplifiers you are talking about are designed to handle video at relatively high voltages, certainly 1V and probably some overhead. A few millivolts of noise would be invisible in a picture so they are not designed to specifically have low noise output. For HF a signal of one microvolt (= 1/1000 of a millivolt) is significant. So you will get the gain you want but you might also drown out weaker signals.

Brian.