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Re: LF: Radio signals

from [M0FMT] [Permanent Link][Original]
To: "[email protected]" <[email protected]>
Subject: Re: LF: Radio signals
From: M0FMT <[email protected]>
Date: Wed, 11 Sep 2013 10:10:43 +0100 (BST)
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Hi
 
Non linearity in the first RX stage? Caused by a fault in the stage or over driving of the stage.Or some very bad corrosion in the joints of the antenna leads. etc etc. Check your RX,  try fitting an attenuator in the antenna lead or shorten your antenna.
 
73 es GL Pete M0FMT IO91UX

From: edgar <[email protected]>
To: "[email protected]" <[email protected]>; "[email protected]" <[email protected]>
Sent: Wednesday, 11 September 2013, 6:03
Subject: LF: Radio signals

Hi Group,

What is the mechanism for the way radio signals combine in the air?

For example

1.There are two transmitters each sending out the same fixed frequency
sine wave signal.

2. There are no other signals in space, and no background noise.

3. There are no propagation factors modifying the signals.

e.g. buildings, ionosphere layers.

4. Both transmitters are the same distance from the receiver.

5. Both signals have the same polarisation.

How have the signals combined when they reach a receiving antenna at a
reasonable distance from both transmitters?

It the process addition, multiplication or some other process?

Regards, Edgar
Moonah, Tasmania.








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