Posted by
Igor Sokolov-2 on
Jul 13, 2011; 5:41pm
URL: http://elecraft.85.s1.nabble.com/KPA500-and-KAT500-Ports-tp6574422p6580033.html
IMHO the demand for a solid state linear amp with antenna tuner and
multiple antenna ports can be split into two niches.
1. Fully integrated portable system of PA, antenna tuner, antenna switch
with multiple ports and programmable band decoder all in one relatively
small package. This system has limited flexibility but appeals to portable
shack users, DXpeditions etc. One good example is Expert 1K-FA which has 2
inputs, 4 antenna ports, limited SO2R using separate RX antenna, built in
antenna tuner with huge number of memories for each of the two inputs/
band/antenna port and very nice built in band decoder that supports any type
of transceiver. Expert 2K-FA goes even further having 6 ports and the
possibility to remote the built in antenna tuner.
2) Separate sophisticated programmable band decoder that controls external
(local or remote) antenna switches.
This is applicable for stations with many different antennas because the
system can be tailored to virtually any need. Microham Station Master with
external antenna switches is a good example.
You may ask how does it relates to this reflector? Simple. I use Elecraft
K3 in combo with Expert 1K-FA and have inverted L for 160, inverted V for
80m, 2el Yagi for 40meters and tribander for 20-15-10 (exactly 4 antennas)
My friend R9DX has 7 towers with multiples stacks and at least 4 antennas
for each band. He is using pair of K3s with pair of Microham Station
Masters and different antenna switches in a pretty complicated SO2R
configuration. Pictures can be found here
http://ua9clb.narod.ru/73, Igor UA9CDC
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