[Kenwood] Kenwood AT-230 Manual Antenna tuner PEP limit

Kenneth G. Gordon kgordon2006 at frontier.com
Fri Jun 20 16:44:46 EDT 2014


On 20 Jun 2014 at 13:53, Terry Clinard wrote:

> Can anyone advise me if the specs. on the AT-230 manual torroid tapped inductors
> / variable capacitors, can withstand 450watts PEP when on SSB?  The manual
> states that it is rated at 100 watts CW carrier and 200 watts PEP.  If the load
> conditions do not allow for arcing, then it seems possible to do this once you
> use the tuner and determine at what wattage it will begin arcing at.  Maybe it
> will withstand 350 watts PEP.  Is there any way to test prior to using it with
> higher wattage than what it is rated at? 

I, most certainly, would never attempt that....

It isn't so much a matter of arcing as burning up components due to the RF 
current. Over-saturating the toroids, etc. Forget it.

Ken W7EKB


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