[Lowfer] Poor man's mw/lw wideband noise reduction

[Andy - KU4XR]

Hey Paul / LOWfers:

That concept also works in the reverse. While trying to get a
better quality of sound out of cheap ( narrow ) A.M. radios,
2 radios can be tuned to a local station, and one tuned slightly
high in frequency, the other slightly low. The high frequency
response will increase noticably, with out losing the bass response.
Seperating the radios apart from one another will give a spatial
effect. And if you really want to play HI-FI; run the output of one 
radio into the left channel of a stereo amp, and the other into
the right channel. Makeshift Wideband A.M. radio that sounds pretty
darned good.

Andy - KU4XR - EM75xr - Friendsville, TN.
LOWfer Beacon " XR " @ 184.322 KHz ( QRSS-60 )
Coordinates:  N:  35* 43' 54" - W:  84* 3' 16"
http://www.myspace.com/beaconxr


--- On Sat, 1/10/09, PAUL DAULTON <k5wms at aristotle.net> wrote:

> From: PAUL DAULTON <k5wms at aristotle.net>
> Subject: [Lowfer] Poor man's mw/lw wideband noise reduction
> To: lowfer at mailman.qth.net
> Date: Saturday, January 10, 2009, 11:23 AM
> I found an article in Elektor magazine feb 2005, which can
> be downloaded
>  from Elektors's site, about
> a noise reduction method.
> Basically two receivers are used.The loudspeaker outputs of
> the two radios
>  are connected in phase while 
> the speaker in the second rec is disconnected. With the
> second receiver
>  tuned a little higher or lower than
> the main one the speaker of the main receiver is fed with
> the difference
>  between the two signals. External
> antennas should be connected in parallel. Using the volume
> adjustment on
>  the second radio a setting can be 
> found that should result in a reduction of noise.
> Sounds good I am trying to figure out how to apply to Argo
> connections.
> Any comments?
> Paul K5wms
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