lets think about this.
how much power is your standard kitchen microwave oven?
Range is 700watts for a small, apartment, bachellor sized oven for zapping 
pizza or left over chinese take out.  Upper range is 11 or 1200 watts for a 
large family sized oven for making serious meals.
On average, acording to wikipedia, a modern microwave oven has an efficiency 
rating of 64 percent...so 64 percent of the total listed rating.
at a 700 watt rating, this would be     about 448W.  At a 1100 watt rating 
its around 704W.
You could probably heat one precooked hotdog in a 700 watt microwave oven in 
about 2 minutes or so....perhaps less, maybe 30 seconds to achieve a nice 
hotdoggish split.
This is precooked, so there is no need to actually cook the meat.
Cooking real meat, like chicken, beef, pork, whatever, probably 20 minutes 
plus to get it properly cooked, though still rare.  this would be at the 700 
watt range.
Now, imagine you have a 1.2GHZ transmitter...there is no cooking cavity to 
bounce the RF around in to consentrate it's radiation towards a central 
point for cooking purposes.  You could use a wave guide to consentrate the 
RF into a narrow beam though.
You would need at least 448 watts of RF, at 1.2GHZ to think about cooking 
the meat, and would have to key down for probably 15 minutes minimum to 
achieve enough heat to cook the inside of the meat...meanwhile, you would 
have to cool the amplifier with a pretty large water cooling system...not to 
mention higher power levels.
The ts2000 puts out 10 watts on 1.2GHZ...
we won't even get into types of modulation and carier and all that kind of 
stuff that doesn't factor in when refering to microwave ovens.
They use a magnatron to convert power from a transformer into RF which is 
then sent through a wave guide into an enclosed cooking chamber.
So, in practical terms, you could never cook anything even with a waveguide, 
and an inch away with 10 watts out of the ts2000....well, perhaps you could, 
but it might take weeks.
it would be like trying to cook a hotdog with your wireless internet router, 
which is close to the same frequencies used by residential consumer level 
microwave ovens.
With high power and a wave guide at 2.4 gigs, you can heat a glass of water 
apparently, but I've never actually seen or read proof of any ham operator 
doing this.
it takes a huge amount of cooling to operate any kind of power on 1.2GHZ 
with a modulated RF signal.
Most guys that use 1.2GHZ amateur frequencies with an amplifier have pretty 
large water cooling systems.
Microwaves use a cooling tube, and the RF is not modulated as we know it in 
communications terms.
So the short answer is, you can't cook a hot dog with an amateur 1.2ghz 
transmitter.
73
Colin, V A6BKX
>  73