The actual return loss improvement is twice the attenuation, but I know Paul knows that.
--- On Wed, 4/21/10, Paul Christensen <[email protected]> wrote: > For the same concerns, I think an auto-switched pad engaged > during an input > fault is a good idea. In the case of the SPE amp, I > would not like to have > 30-watts dissipating as heat in the front end of the > amp. The 3dB pad does > improve return loss into the amp input by the same > amount. But, the > effective gain factor of the amp is then reduced by 3dB. > > The pad may assist with improving linearity from the > driving transceiver, > but improving linearity can be accomplished with better > efficiency if the > transceiver has an internal ATU with an auto-tune function > that can be > programmed to limit the transceiver's power during the tune > function. > > Paul, W9AC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
