[Elecraft] KAT500 Antenna Selection?

[Joe Subich, W4TV]

 > Not if the operator isn't stupid.

  ... or tired, not thinking clearly, in a hurry to work a "new one",
changing the SO2R radio while concentrating on the run rig, or in a
hurry to work a multiplier on a new band, etc.  It only takes one
time to forget to "tune" the KAT500 - or have something happen to a
normally well behaved antenna - for the KAT500 delay RTTY to a legal
limit amp by 1/4 second so the vacuum relay switches at full power
and end up with heap of trouble.

I'm not saying the RF switching/tuning isn't fine in its place but I
would certainly want to minimize the chances of a failure by using
the band data.  If it were my design, the pass through PTT would not
activate until the input PTT had cycled - that is if the KAT500 had
to take the amplifier off line to retune, the PTT would not activate
until the input PTT had cleared and been asserted again.

73,

    ... Joe, W4TV


On 10/10/2012 4:56 PM, Jim Brown wrote:
> On 10/10/2012 12:15 PM, Joe Subich, W4TV wrote:
>> This only moves the hot switching from the KAT500 to the amplifier.
>
> Not if the operator isn't stupid.  A smart operator will do as I have
> described -- a short burst of RF to let the KAT determine operating
> frequency and recall settings. And with an amp like the Titan, simply
> put it in standby to let the KAT tune if needed.
>
> 73, Jim K9YC
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