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More tweaks to user Guide.

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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7067 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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Joe Taylor 2016-09-08 20:30:12 +00:00
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2
doc/common/links.adoc
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@ -112,7 +112,7 @@ d). Edit lines as needed. Keeping them in alphabetic order help see dupes.
:bill_somerville: mailto:g4wjs -at- c l a s s d e s i g n -dot- com [G4WJS] :bill_somerville: mailto:g4wjs -at- c l a s s d e s i g n -dot- com [G4WJS]
:dev_mail_list: http://sourceforge.net/mailarchive/forum.php?forum_name=wsjt-devel[WSJT Developers Email List] :dev_mail_list: http://sourceforge.net/mailarchive/forum.php?forum_name=wsjt-devel[WSJT Developers Email List]
:dev_mail_svn: https://sourceforge.net/auth/subscriptions/[WSJT SVN Archives] :dev_mail_svn: https://sourceforge.net/auth/subscriptions/[WSJT SVN Archives]
:devmail: mailto:wsjt-devel@lists.sourceforge.net[wsjt-devel] :devmail: mailto:wsjt-devel@lists.sourceforge.net[wsjt-devel@lists.sourceforge.net]
:devmail1: mailto:wsjt-devel@lists.sourceforge.net[Post Message] :devmail1: mailto:wsjt-devel@lists.sourceforge.net[Post Message]
:wsjtgroup_mail: mailto:wsjtgroup@yahoogroups.com[Post Message] :wsjtgroup_mail: mailto:wsjtgroup@yahoogroups.com[Post Message]
:greg_beam: mailto:ki7mt@yahoo.com[KI7MT] :greg_beam: mailto:ki7mt@yahoo.com[KI7MT]

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doc/user_guide/en/introduction.adoc
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@ -2,9 +2,9 @@
_WSJT-X_ is a computer program designed to facilitate basic amateur _WSJT-X_ is a computer program designed to facilitate basic amateur
radio communication using very weak signals. The first four letters in radio communication using very weak signals. The first four letters in
the program name stand for "`Weak Signal communication by K1JT,`" while the program name stand for "`Weak Signal communication by K1JT,`"
the suffix "`-X`" indicates that _WSJT-X_ started as an extended (and while the suffix "`-X`" indicates that _WSJT-X_ started as an extended
experimental) branch of the program _WSJT_. (and originally experimental) branch of the program _WSJT_.
_WSJT-X_ Version 1.7 offers eight protocols or "`modes`": *JT4*, _WSJT-X_ Version 1.7 offers eight protocols or "`modes`": *JT4*,
*JT9*, *JT65*, *QRA64*, *WSPR*, *Echo*, *ISCAT*, and *MSK144*. The *JT9*, *JT65*, *QRA64*, *WSPR*, *Echo*, *ISCAT*, and *MSK144*. The
@ -15,29 +15,29 @@ and source encoding. JT65 and QRA64 were designed for EME
effective for worldwide QRP communication on the HF bands. QRA64 has effective for worldwide QRP communication on the HF bands. QRA64 has
a number of advantages over JT65, including better performance on the a number of advantages over JT65, including better performance on the
very weakest signals. We imagine that over time it will replace JT65 very weakest signals. We imagine that over time it will replace JT65
for EME use. JT9 is optimized for the LF, MF, and lower HF bands. It for EME use. JT9 was designed for the LF, MF, and lower HF bands.
is 2 dB more sensitive than JT65 while using less than 10% of the Its submode JT9A is 2 dB more sensitive than JT65 while using less
bandwidth. JT4 offers a wide variety of tone spacings and has proved than 10% of the bandwidth. JT4 offers a wide variety of tone spacings
very effective for EME on microwave bands up to 24 GHz. All of these and has proved very effective for EME on microwave bands up to 24 GHz.
"`slow`" modes use one-minute timed sequences of alternating All of these "`slow`" modes use one-minute timed sequences of
transmission and reception, so a minimal QSO takes four to six minutes alternating transmission and reception, so a minimal QSO takes four to
— two or three transmissions by each station, one sending in odd UTC six minutes — two or three transmissions by each station, one sending
minutes and the other even. On the HF bands, world-wide QSOs are in odd UTC minutes and the other even. On the HF bands, world-wide
possible using power levels of a few watts (or even milliwatts) and QSOs are possible using power levels of a few watts (or even
compromise antennas. On VHF bands and higher, QSOs are possible (by milliwatts) and compromise antennas. On VHF bands and higher, QSOs
EME and other propagation types) at signal levels 10 to 15 dB below are possible (by EME and other propagation types) at signal levels 10
those required for CW. to 15 dB below those required for CW.
*ISCAT*, *MSK144*, and optionally *JT9E-H* are "`fast`" modes designed *ISCAT*, *MSK144*, and optionally submodes *JT9E-H* are "`fast`"
to take advantage of brief signal enhancements from ionized meteor protocols designed to take advantage of brief signal enhancements from
trails and other types of scatter propagation. These modes use timed ionized meteor trails and other types of scatter propagation. These
sequences of 5, 10, 15, or 30 s duration. User messages are modes use timed sequences of 5, 10, 15, or 30 s duration. User
transmitted repeatedly at high rate (up to 250 characters per second, messages are transmitted repeatedly at high rate (up to 250 characters
for MSK144) to make good use of the shortest meteor "`pings`". ISCAT per second, for MSK144) to make good use of the shortest meteor
uses free-form messages up to 28 characters long, while MSK144 uses "`pings`". ISCAT uses free-form messages up to 28 characters long,
the same structured messages as the slow modes together with an while MSK144 uses the same structured messages as the slow modes
abbreviated format with hashed callsigns for messages sent after together with an abbreviated format with hashed callsigns for messages
initial contact has been established. sent after initial contact has been established between two stations.
*WSPR* (pronounced "`whisper`") stands for Weak Signal Propagation *WSPR* (pronounced "`whisper`") stands for Weak Signal Propagation
Reporter. The WSPR protocol was designed for probing potential Reporter. The WSPR protocol was designed for probing potential