[Elecraft] KAT500 actual radiated power during tuning

[Nr4c]

Don't set to auto tune. Use semi or manual whatever your ATU calls it so the it doesn't retune on its own. 

Sent from my iPhone
...nr4c. bill


> On Nov 6, 2017, at 8:52 PM, Ken K6MR <k6mr at outlook.com> wrote:
> 
> Must be some magic going on in the AH-4.  It specifies “Tuning power required: 5-15 watts”.    Would be interesting to know where the other 14.7 watts is going.  I’m pretty sure the KAT-500 doesn’t have anything like that.
> 
> The other thing you can do with the KAT-500 is specify when a tune sequence is initiated.  I set mine for 1.9:1.  If the SWR is less than that nothing happens.  Allows for some variance in the antennas due to weather conditions.  You can still initiate a tune if you want to manually, but it won’t do it on its own.  The amps are happy below that so no reason to tune.
> 
> Ken K6MR
> 
> ________________________________
> From: E T <etksubs at gmail.com>
> Sent: Monday, November 6, 2017 5:28:16 PM
> To: Ken K6MR
> Cc: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] KAT500 actual radiated power during tuning
> 
> I know the training process, have done it many times on all my tuners, the KX3 and KX2 built-in, KXPA100, also an MFJ-993B and KAT500.  And no, I currently do not have the K3 and the cables to transmit band switching.  But even after training I find that all of these will occasionally perform a full tuning cycle even when close to a programmed frequency.
> 
> So of course given that my antenna is stable I *shouldn’t* need to do a full tune yet there it is.  The tuner behavior is out of my control if it decides to perform a full cycle when I press the tune button after a band or range switch.
> 
> My point is that the AH-4 specs say:
> 
> - 0.3 W RADIATED POWER
>    - Radiated power during tuning is less than 0.3 W, minimizing interference to other stations.
> 
> I’m just asking if the KAT500 has similar capabilities.
> 
>  Erik  W1QED