On 19 Oct 2005 05:26:32 -0700, "RHF"
wrote:


+ AGC set "Off"

* Global : 122W24 Longitude by 37N78 Latitude

Why no AGC?

David Asks - " Why 'no' AGC ? "

REF - Deutsche Welle (DW) News Link on 690 kHz in English
via CBU in Vancouver, BC = http://tinyurl.com/9s4pv

WHY "NO" AGC ? - - - Why Turn the AGC "Off" ?
http://groups.yahoo.com/group/Shortw...a/message/5914

Sometimes with a very weak signal on the Coax Cable {Shielded}
Loop Antenna where the S-Meter reads a Flat "0" {Zero} with
Fair Audio (No Pre-Amps)

It has been my experience that 'sometimes' by Turning "Off"
the AGC the Listenability of the Radio (RF) Signal will show
improvement with very weak signals. YMMV !

Hence the SIO Code : 3.4.3

S = Signal Strength = Fair for the Consistant Strength
of the Signal not the S-Meter Reading.

I = Interference from other stations like local SF Bay Area
Sports Talk Radio on 680 kHz.
KNBR AM 680 kHz = http://www.knbr.com/

O = Overall Quality = Fair

More about KNBR AM Sports Talk Radio 680 kHz :

FCC Clear Channel 680 A,B,D KNBR @ 50 KW {Unlimited}
San Francisco, CA: Class A (I-B)
http://www.fcc.gov/mb/audio/amclasses.html
http://www.csgnetwork.com/amclearradiotable.html

KNBR @ 50 KW uses a single "ND1" Non-Directional Antenna
http://www.fcc.gov/fcc-bin/amq?list=0&facid=35208

KNBR @ 50 KW is about 25 Miles due South of My QTH.
KNBR TX MAP = http://tinyurl.com/8n4dh

SF Bay Area Radio Stations - presented by TV Radio World
http://www.tvradioworld.com/region1/...ters.asp?m=sfr

SF Bay Area Radio Digest = http://www.bayarearadio.org/blog/

HELLO EVERYONE - So Am I Doing Something Wrong ? - Comments ?

QUESTION - Is Turning "Off" the AGC a valid Listening Technique
when Listening to Weak Radio Signals ? ? ?


hope this helps - iwtk ~ RHF