[Elecraft] T1

[Ron D'Eau Claire]

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 !