Why,thank you!
Before any feathers get ruffled,I thought I should mention the antenna I use for higher power experiments,to try and keep -roughly- around the part-15 Limits.
It's your basic "leaky coax" setup... approx. 70-Feet of "cheap-o" 50-ohm coax,with a homebrew 15W dummy-load on the other end..
The dummy load consists of (60) 3K 1/4W carbon comp resistors all in parallel,with a SO-239 socket.
The cable is wrapped half way around the house,hidden behind the shrubs in the flower beds.
I can generally pick up the signal around the house with lower powers without too much fuss.I have driven up to 8-9W into this 'antenna' before,and was able to get a good signal in the car for a few blocks.
This seems comparable to the range of the average Ramsey kit,So I assume it's safe for Part-15 use,at 'medium' powers.
For really high powers,just increase the dummy load's wattage to suit...I'm sure that at some point (100W?) you may be over the Part-15 reg's,no matter what...(Even 1% 'leakage' would be a comparatively large signal,at such power levels!)
If you want to increase the range,You can tie a short wire on the end of the dummyload's center/positive/hot lead.
With 1W into the leaky-coax-antenna,and a 18inch? test-lead clipped to the dummy load,It tossed a good signal for a few blocks easily.
Adjust the length of the wire for the desired coverage.
-Be careful,It's probably pretty easy to go over the Part-15 limits with a longer 'clip-lead' wire at medium to high power!!-
I'll try to get a pic/diagram up.
I also have a Nifty tunable J-pole for lower power use,and also FM DX'ing..It rocks for DX'ing on my Sansui TU-717!
250mw into the J-pole will throw a decent signal about 1/2 to 1-mile. (in theory,of course!
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