Posted by
LA8OKA on
Dec 08, 2011; 1:23pm
URL: http://elecraft.85.s1.nabble.com/KAT500-update-tp7072932p7074222.html
Have you tought about the possibility to combine two of the SO-239 connectors to form a balanced input.
With some relays it is possible to change the configuration in such a way that say selecting Antenna 1 is SO-239 connector 1, selecting Antenna 2 is SO-239 connector 2, selecting Antenna 3 is SO-239 connector 3, selecting Antenna 4 is SO-239 connector 2 senter conductor and SO-239 connector 3 senter conductor with a balun switched in to the circuit by some relais to make the combined inputs of SO-239 connector 2 senter conductor and SO-239 connector 3 senter conductor a balanced input.
It is of coarse not possible to use SO-239 connector 2 and SO-239 connector 3 as unbalanced (coaxial) antenna inputs at the same time as the antenna 4 configuration is used, so due to this the control firmware should be set up in such a way that when Antenna 4 is NOT enabled, the following selections are available:
Ant 1, Ant 2 and Ant 3,
and when Antenna 4 IS enabled, the following selections are available:
Ant 1 and Ant 4.
I think that something like this would give the users a great flexibility.
Martin Storli
LA8OKA
Oslo, Norway
ARCTICPEAK's Radio pages!
http://www.arcticpeak.com/radio.htm________________________________
Fra: Wayne Burdick <
[hidden email]>
Til: Elecraft Reflector <
[hidden email]>
Kopi:
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Sendt: Torsdag, 8. desember 2011 2.22
Emne: [Elecraft] KAT500 update
We originally had two antenna jacks on the KAT500, with one of them
switchable between balanced and unbalanced.
Recently we decided that a third antenna jack would provide greater
utility overall. (In my case, I'll be keeping a dummy load on the
third jack.) All three jacks will be unbalanced (SO239).
We're hoping to add a high-power, high-performance balun to our
product line sometime next year that will serve the needs of those
using balanced lines.
73,
Wayne
N6KR
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