hey very good day what actually happens when you double your power so if you've got an hf
antenna it's already hf radio and you're doing let's say 100 bucks and you double
it to 200 watts put little amplifier on you get 200 out the other end now we know that doubling
something gives you an extra 3 db now we can can you hear 3 db well here we are could you see 3
db so i've got a balloon here i'm going to blow it up and make it a 100 watt radio right hang on
let's do this let's do this i'll do a half breath i'll try and practice
all right that is a hundred watts let's say so if we double the power and put another half breath in
which is about that size there's not a lot of difference between the two so let's
tie this off and make it a 200 watt visualization program
200 watts let's just blow this up to 100.
i think you would agree it was about there wasn't it
and should we attempt a 400 watt well find out i suppose
should be bigger i'll give it a tiny bit more for the visualization i mean that's maybe 500
right so
so rather than trying to hear the difference in so rather than trying to hear the difference
in terms of signal strength we can now visualize it so here's our 100 watt radio
ts 590 ts2000 897 or you know just a regular radio right next to it is 200 watts so i want
you to imagine that's your antenna pattern if we had an antenna that could only you know it looked
like that basically you put another 100 watts into it you don't get much more do you think
you're going to be substantially different to the other guy the next guy probably not now i want
you to imagine 400 watts next to 100. now there is can you see me there is a bit of difference
but it's not as big as you imagine so one way way way one way leave those blues there one
way of getting more gain is to focus because you can't get once you put you around you once you put
your power down your coax into your antenna you can't get more power you an antenna doesn't make
power what it does it focuses so it might squash it lower to the ground it might focus it more on
that in that direction and that's the only way you could get more power out of your antenna so when
people say if you've got 100 watt radio and people say oh this is a you know some gigantic gain
you know on their antenna how's that actually doing right because let's face it a
a vertical basically looks like a doughnut like that a dipole on the other hand it looks like a
doughnut that's all the way through you can't get any more power off a dipole than there already is
similarly like in the uk we have the foundation license and the intermediate license one is a 10
watts so if you remember that was 100. let's call that 10 now and then when you go to intermediate
you go to 50 and i think we agreed that was somewhere between 400 and 500 there's a factor
of 10 so there's 10 watts there's nearly 50 watts all right there's not a lot in here just a good
way of understanding and visualizing how power will affect your ham radio world all right next
video's coming up here have a great day thanks for tuning in all the best oops bye for now bye