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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+Radio\s+signals\s*$/: 8 ]

Total 8 documents matching your query.

1. LF: Radio signals (score: 1)
Author: edgar <[email protected]>
Date: Wed, 11 Sep 2013 15:03:02 +1000
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 othe
/rsgb_lf_group-archives/html/rsgb_lf_group/2013-09/msg00096.html (9,923 bytes)

2. Re: LF: Radio signals (score: 1)
Author: M0FMT <[email protected]>
Date: Wed, 11 Sep 2013 10:10:43 +0100 (BST)
/rsgb_lf_group-archives/html/rsgb_lf_group/2013-09/msg00347.html (12,811 bytes)

3. Re: LF: Radio signals (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Wed, 11 Sep 2013 10:55:14 +0100
Hi Edgar.......Or if the receiver is operating in a linear mode.....then straight addition, but probably only with SSB detection, an AM demodulater diode is non-linear :-)) If you add the signals com
/rsgb_lf_group-archives/html/rsgb_lf_group/2013-09/msg00348.html (14,161 bytes)

4. Re: LF: Radio signals (score: 1)
Author: Markus Vester <[email protected]>
Date: Wed, 11 Sep 2013 06:06:15 -0400 (EDT)
Edgar, straightforward linear addition of voltages. If both transmitters had same power and phase you will get + 6 dB on the receiver. If you had two equally (in)efficient LF antennas on the same pre
/rsgb_lf_group-archives/html/rsgb_lf_group/2013-09/msg00349.html (12,930 bytes)

5. Re: LF: Radio signals (score: 1)
Author: pat <[email protected]>
Date: Wed, 11 Sep 2013 15:32:17 +0100
Hmmm! Interesting one. I have always assumed that the first point at which the signal(s) caused the electromagnetic field(s) to develop into voltages/currents and might then be subject to further pro
/rsgb_lf_group-archives/html/rsgb_lf_group/2013-09/msg00350.html (17,186 bytes)

6. Re: LF: Radio signals (score: 1)
Author: "Graham" <[email protected]>
Date: Wed, 11 Sep 2013 16:57:12 +0100
The short answer is 'No they have not' There is no interference in free space unless you transgress into partial physics and then the theories are held together with string , there is that experiment
/rsgb_lf_group-archives/html/rsgb_lf_group/2013-09/msg00351.html (11,293 bytes)

7. Re: LF: Radio signals (score: 1)
Author: Alex Deligiannis <[email protected]>
Date: Wed, 11 Sep 2013 19:40:25 +0300
...will be the vector sum of the two carriers / time and for a spectrum , then a reference is needed to recover the modulation , CIO , to give freq/amp/time , or a complex w/f / time for a detector a
/rsgb_lf_group-archives/html/rsgb_lf_group/2013-09/msg00352.html (10,982 bytes)

8. Re: LF: Radio signals (score: 1)
Author: "Graham" <[email protected]>
Date: Wed, 11 Sep 2013 18:24:37 +0100
that dose something funny with a low frequency modulation to give a ' rotating ' field , where the phase gives the bearing ? G, ...will be the vector sum of the two carriers / time and for a spectrum
/rsgb_lf_group-archives/html/rsgb_lf_group/2013-09/msg00353.html (11,698 bytes)


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