Posted by
Craig Smith on
Jul 13, 2011; 1:01pm
URL: http://elecraft.85.s1.nabble.com/KPA500-and-KAT500-Ports-tp6574422p6578916.html
Greetings Ian ...
Yes, your proposed idea would be an acceptable approach for me. As you
point out, the two main things are to have the tuner and antenna switching
at a remote location and to have the control mechanism for all the switching
tightly integrated into the K3/KAT500 or K3/KPA500/KAT500 system. Each band
should have at least two (and preferably 3 or 4) combinations of memorized
tuner settings and relay driver selections similar to the way the current
KAT100 provides for Ant 1 and Ant 2 settings.
I would be comfortable with homebrewing the actual relay switching, antenna
connectors, waterproofing, etc. if Elecraft provides the integrated control
structure and supporting firmware. The user would then select via menu
which of the relay drivers to be activated for each of the (hopefully 4)
antenna selections on a per band basis.
73 Craig AC0DS
<> Please let us hope that one version of the KAT500 will be a bare
<> board-level module that users can package to meet their own
<> environmental requirements.
<>
<> However, there is a half-way solution which could be implemented at
<> relatively low cost. That is to provide a number of open-collector relay
<> drivers within the KAT500, remotely configurable through the control
<> bus. These relay outputs could then be used to create custom antenna
<> switching arrangements outside of the KAT500.
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