KAT-500 Power Rating in Bypass

[Michael Tope]

 From the KAT-500 owners manual the power ratings are as follows:

3—30 MHz 600W into 5 Ω to 500 Ω (10:1 SWR).
          1000W into 16 Ω to 150 Ω (3:1 SWR).

1.8-2.0 MHz 600 W into 10 Ω to 500 Ω (5:1 Low Impedance, 10:1 High
Impedance SWR).

Does anyone know what the power rating is for 160 meters when the tuner
is in bypass mode?

I would like to put my Alpha 87A in front of the KAT-500 and run the
KAT-500 in bypass mode on 160 meters at 1500 watts, and then at reduced
power on the other bands where I am actually using the tuner to match
the antenna. This is for a remote setup, so it is not convenient to
physically take the tuner out of amplifier's output path on 160 meters.

Thanks,

Mike W4EF...............



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[Jim Brown-10]

Hi Mike,

I have a pair of KAT500's in my SO2R station. They're currently fed by a
pair of 87As, and before that, a pair of TenTec Titans. Both are legal
limit amps using the same tubes. My antennas are all close enough to
resonance that I can use the tuners in bypass mode and use the
amplifier's output network to keep the tubes happy.  I have an LP100A
inline with both amps, and, for legal limit contests, I keep the power
right there. The KAT500s are happy with that arrangement. They were NOT
happy in Man mode above about 1 kW, and the level at which they got
unhappy was reduced increased mismatch.

73, Jim K9YC

On 1/25/2018 10:31 PM, Michael Tope wrote:
> Does anyone know what the power rating is for 160 meters when the
> tuner is in bypass mode?


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