Way back during the field test one or two fellows pumped about 40 watts through one, but I'm not sure what impedance the T1 was looking into.
The issues with higher powers are: 1 - Saturating the toroid cores with high currents. Need physically larger toroids (like the KPA100/KAT3) to avoid that. 2 - Voltage breakdown ratings of the capacitors used. High voltage capacitors tend to be physically big caps. 3 - Voltage and current handling capabilities of the relays used. Ditto 2 (above). So if you used bigger inductors, bigger capacitors and bigger relays you can probably go as far as you want, but it sure won't look like a T1 any longer - it'll be much, much larger. Of course all of those things vary widely with the SWR too. If a tuner is used to correct nothing more than a 2:1 or 3:1 mismatch such as might be typically seen looking into a nominally resonant antenna (like many tuners built into rigs today), the currents and voltages will be much less than if one tries to load a random wire or multiband doublet. So the moral of the story is that a tuner designed to handle both power and a wide range of impedances is a BIG tuner. Ron AC7AC -----Original Message----- Thanks for your help just the same. I wonder if anyone tried to modify this atu to higher power ratings, say 100 watts ! ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
