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what is SYNCHRONOUS DETECTION AND ZERO BEAT?
rec.radio.shortwave  -  9 posts  -  5 authors  - Last post:  Sep 9, 1996
The short answer: Zero beat is when your BFO is on the same apparent
... zero beat an AM signal, it is called ECSS or exalted
carrier single sideband reception.
http://groups.google.com/g/5537feeb/t/8bb71e4b9ca82298/.../c31230415d0aa717?...

What is zero beat?
rec.radio.amateur.homebrew  -  5 posts  -  5 authors  - Last post:  Mar 5, 2003
This gives an audio response of about 200-400 hz to the filter BW+(200-400hz). It also means you CAN'T
hear the zero beat. It also gives single signal reception ...
http://groups.google.com/g/d5a7ff03/t/b1c34b2742e7f614/.../1378d13667a6f271?...

Trimming a crystal
rec.radio.amateur.homebrew  -  4 posts  -  4 authors  - Last post:  Jan 29, 2000
Zero beating *will* yield the correct frequency if the receiver is set
for SSB reception. However, in a receiver with good SSB filters, the
signal may disappear ...
http://groups.google.com/g/d5a7ff03/t/63ee3b9653a2c07/d/1d754c7b513d7a55?...

How to do ECSS?
rec.radio.shortwave  -  7 posts  -  7 authors  - Last post:  May 13, 2002
It's nearly impossible to zero beat with such coarse tuning. Even
fine tuning adjustments for SSB reception like on the Grundig YB-400
only marginally work.
http://groups.google.com/g/5537feeb/t/b08a6595c9244222/.../43b01a29aed20fe7?...

CW Offset question
rec.radio.amateur.policy  -  62 posts  -  16 authors  - Last post:  Feb 26, 2000
With ANY offset, you can adjust the IF Shift to get single signal reception<
/b> or misadjust it to get both sides of zero beat. There ya go. But the
way it was described, ...
http://groups.google.com/g/0bc7fef4/t/81d00e676fd74159/d/e65aaee71ca06cf6?...

IF oscillates when peaked
rec.antiques.radio+phono  -  15 posts  -  11 authors  - Last post:  Apr 22, 2002
I was able to zero beat on the second harmonic with an AM station at 910
khz. ... I aligned my radio and the reception is much improved,
(Philco 40-95). However ...
http://groups.google.com/g/d117fef3/t/8113da9e7153b7df/d/cc7ae0a0c9c6d9dd?...

Radio theory, tuning a CB
rec.radio.cb  -  27 posts  -  11 authors  - Last post:  Aug 13, 1995
Even if you zero beat a rock solid AM shortwave piano concerto listening
on usb ... of normal SSB reception plus you will hear a
hetrodyne when tuned off center.
http://groups.google.com/g/2be7fef9/t/58d680a20b6be7b7/.../9f8820165926dd59?...

DSP radio
comp.dsp  -  56 posts  -  19 authors  - Last post:  May 17, 2002
... CS nightmare - "were you standing near anyone else with a cellphone when you had this
reception problem, Sir?". Back in the 80s, Multitone had zero beat IF ...
http://groups.google.com/g/0337ff07/t/bdffa5a900f928a0/d/88612cd8fcbe8969?...

AM Broadcast - TWO sidebands??
sci.electronics.design  -  35 posts  -  14 authors  - Last post:  Nov 26, 1998
You will also hear a hellacious howl as you "zero beat" the AM signal's carrier.
The same may be observed, in reverse, if the RCVR is set for LSB reception.
http://groups.google.com/g/2e17feed/t/e7e591e96881519a/.../d6a648c3bc9507cb?...

Emulating Sync Detection on the 398/ATS909
rec.radio.shortwave  -  2 posts  -  2 authors  - Last post:  May 22, 2000
... described as manual sync detection (a true sync detector holds the zero beat ...
It allows better reception of a regular (AM mode) signal, decreasing fading and ...
http://groups.google.com/g/5537feeb/t/6f1ca5a524ceff37/d/b208caae80adddcc?...


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