Knut,
FWIW I found that the isolation between the ANT 1 and 2 ports of my KAT100
on 15m was only approx 40db. To increase the isolation between ports, not
only did I have to add a relay to ground the port not in use, but I also had
to replace the relay-to-port unshielded wiring with coax.
Sounds as though you could have a similar problem with the KAT500.
73,
Geoff
LX2AO
On January 01, 2013 at 6:53 PM, Knut AB2TC wrote:
Hi,
How did you measure that? They are very different from my measurements.
Here
is what I did:
Put radio TX in Test mode to protect the XG3.
Connect XG3 to antenna 1 at -74dBm on 10m.
Measure:
port 1: -76dBm
port 2: -107dBm (port connected to another antenna switch which presents a
short circuit).
port 3: -110dBm (port connected to dummy load from Ridge Electronics).
The measurements are taken with LP-Pan/NaP3. That's a mere 34dB in the
best
case. BTW the numbers confirm what I can easily observe during normal
operation. What are other people seeing?
AB2TC - Knut
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