Subj : Re: Antenna
To   : Mike Ross
From : James Bradley
Date : Tue Jul 12 2005 08:55 pm

07-12-05  10:13, Mike Ross told James Bradley about Re: Antenna

 How do, Mike?

 MR> "James Bradley" bravely wrote to "Tom Walker" (11 Jul 05  20:37:22)
 JB> 07-10-05  07:15, Tom Walker told Mike Ross about Re: Antenna

 MR> MR>But there is a ground: the operator's body is one plate of a capacitor
 MR> MR>which forms the counterpoise or ground radial.
 
 MR> TW> In my Experience I have seen NO difference in "Recieving", Which
 MR> TW> after al is the TOPPIC of thoe discussion, between a Held Radio and a
 MR> TW> NON held one sitting on a plastic Card Table.
 
 MR>Who am I to argue with your personal experience?
 
 TW> In a lot of things things there  differences between "Pure Theory"
 TW> and the real World.
 TW> I get a laugh about some of the Misconceptions in things.
 
 TW> Like some thinking that if they double the power of their radio they
 TW> will double the range.
 
 JB> We've found a few am skip traces, mostly from Colorado on our travels.
 JB> Last one was when Gulf War I was just tooling up, and they played an
 JB> isolation of Linda McArtney mic. What a floorer. You thought Oko was
 JB> bad?


 MR> James,

Bonjour Montreal!

 MR> When atmospheric conditions are just right, i.e. inversion layers,
 MR> tunneling, etc, AM can go really far. For example, one Sunday around
 MR> 1pm local time I caught an AM station from Pesto, Bolivia over here in
 MR> Montreal. Being a town on the top of a high peak in the Andes I
 MR> suppose the approx. 700K Hz signal must have injected above a cloud
 MR> layer and bounced off this and the ionosphere all those thousands of
 MR> miles. It was a very magical moment. The reciever had highly sensitive
 MR> fet devices, not the typical table top, and the local station was off
 MR> the air. Of course, a little closer are the Havana powerhouses which
 MR> often come through at night but sometimes in the daytime.

With their lack of regulations, or policing of their power, I suppose Havana 
can entertain most of Florida, unless it is jammed at the border.

For me, the Dodge camper-van was wired with a highly sensitive AM only radio, 
and being a '70 vintage, places it squarely in the discreet component (Maybe in 
the FET?) era device. When on the highway, one is always looking for some 
entertainment, and scanning the waves.

It can be quite the hoot to log some of the stations one can find, and how 
moving can affect the signal.



.... James

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