Ive invoked the Decca amp (thanks Crawley club!) and it needs a bit of
tweaking, but we are running close to 30-35A aerial current into the loop as
is and nothing cap/toroid wise is getting warm - final power will be around
1Kw when ive done the final tweeks to the coils in the PA.
Ground wave tests whilst mobile using an E probe and FT817 and XDW at 180W
with the MRF amp (12 amps AEI) had the signal CW audible to 500 miles whilst
drive on I40, so it looks, even given the diminutive size relative to
lambda, that these things radiate quite well .-3dB points look like 110 deg
on this one, and Eu is around 1-1.5dB down on the main lobe - Northern
Africa gets the biggest theoretical signal towards the East.
Let the games begin.
Laurence KL1X/5 Okie
Beacon status
http://myweb.cableone.net/flow
_________________________________________________________________
Get ready for school! Find articles, homework help and more in the Back to
School Guide! http://special.msn.com/network/04backtoschool.armx
|
