Hi Larry, When it comes to lightning all bets are off. All you can ever hope to do is protect the equipment with all the proper techniques and devices available.
No... in the specific case I mentioned the preamplifier simply goes into normal relay bypass mode when the internal rf detection circuit finds enough energy to switch. An "example" might be a very nearby radio transmitting at or near the repeater receive antenna. Sometimes by accident... sometimes not. The relay bypass function will probably not a big help in the case of lighning. The preamplifer is installed in the receive side of the antenna system. In the case of lighning... all you can do is protection, prevention and hope/pray. cheers, s. > Larry Rappaport <[EMAIL PROTECTED]> wrote: > I'm a little confused, Skipp (nothing new there!). Are you > saying that the preamp detects lightning by the rf bypass > switching? After all, a repeater always transmits when it > is receiving. I am assuming that you place the preamp between > the duplexer and the receiver. > 73, > Larry, W1HJF > > > > I replaced the last blown preamp with a similar spec unit that > > contained internal rf bypass switching when transmit power is > > detected in the coax line.
