Once I "trained" my KAT500 at the middle of each of its segments for
each band and for each antenna usable on that band, I run it in MAN
mode. My understanding is that in MAN, it will fetch the appropriate
values when it first smells RF [or is told on the port to the radio],
but it won't automatically enter a tune cycle. In AUTO, it fetchs the
values from memory and set the relays [almost instantly], but if the
VSWR is above a threshold, it will enter a tune cycle automatically.
This usually isn't so good, especially on SSB.
No matter how I QSY or how far [Big Knob or band change], it never does
an unwanted tune cycle. It selects the preferred antenna for the band
and I transmit. You do have to TX to get it to fetch the right values,
I'm certain that it doesn't follow your receive frequency.
My antennas behave a bit differently when it's raining so I saved two
configurations using the KAT500 Utility. The checklist then is:
1. Go into shack
2. Look out window
3. If it's raining and wasn't last time I was QRV, load Wet Config
4. If it's dry but was raining last time I was QRV, load Dry Config
5. If it's the same as last time I was QRV, call CQ DX :-)
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2013 Cal QSO Party 5-6 Oct 2013
- www.cqp.org
On 9/24/2013 2:46 PM, John E. Reiser wrote:
Bill, W2BLC,
What is the VSWR of your antenna at 3.965? Is the KAT500 stable with
100 watts? That would be a big clue to what is going on.
W2BLC wrote"
KPA500 in the OPER mode.
KAT500 in AUTO (solid on).
K3 set to 25 Watts when running with the amp.
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