View source for Beacon variants

This page lists selected [[stator]] variants of the period-2 oscillator [[beacon]], many of which have appeared frequently in [[soup|random starting configurations]].

== Beacon on some induction coil ==

Several [[induction coil]]s with a line of four or six can be added to beacon. Naturally, some of the more common variants are a result of an active region hitting a beacon acting as a [[boat-bit]]; see relevant note for details.

{| class="wikitable sortable" style="margin-left:auto; margin-right:auto; text-align:center"
! colspan="2"| Pattern
! colspan="3"| [[File formats|Identifiers]]
! colspan="3"| [[Natural]] [[List of common oscillators|commonness]]
! colspan="2"| [[Glider synthesis]]
|-
! Viewer
! Name
! [[apgcode]]
! [[Mark Niemiec|Niemiec]] 
! [[Heinrich Koenig|Pentadecathlon]]
! Position in [[Achim Flammenkamp's census]]<ref name="achim">{{citeAchim|accessdate=June 7, 2022}}</ref>
! Position in [[Adam P. Goucher]]'s [[Catagolue]]<ref name="adam">{{citeCatagolueStats|June 7, 2022}}</ref>
! [[Frequency class]]
! Cost in [[glider]]s
! Info
|-
| {{EmbedViewer|pname=cisbeaconontable|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| [[Cis-beacon on table]]
| {{LinkCatagolue|xp2_318c0f9|style=raw}}
| [https://conwaylife.com/ref/mniemiec/12/12bcta1.rle 12bcta1]
| {{LinkPentadecathlonObject|12P2.2|style=raw}}
| 21st oscillator
| 12th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 28|28.7]]
| 5
| -
|-
| {{EmbedViewer|pname=transbeaconontable|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| [[Trans-beacon on table]]
| {{LinkCatagolue|xp2_wbq23z32|style=raw}}
| [https://conwaylife.com/ref/mniemiec/12/12bcta2.rle 12bcta2]
| {{LinkPentadecathlonObject|12P2.4|style=raw}}
| 22nd oscillator
| 11th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 28|28.6]]
| 5
| Found in January {{year|2020}}.<ref name="post88604" />
|-
| {{EmbedViewer|pname=cisbeacononcap|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| Cis-beacon on cap; Up beacon on cap
| {{LinkCatagolue|xp2_318c0f96|style=raw}}
| [https://conwaylife.com/ref/mniemiec/14/14bcct1.rle 14bcct1]
| {{LinkPentadecathlonObject|14P2.5|style=raw}}
| 32nd oscillator
| 22nd period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 30|30.7]]
| 5
| -
|-
| {{EmbedViewer|pname=transbeacononcap|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| Trans-beacon on cap; Down beacon on cap
| {{LinkCatagolue|xp2_318czw3553|style=raw}}
| [https://conwaylife.com/ref/mniemiec/12/14bcct2.rle 14bcct2]
| {{LinkPentadecathlonObject|12P2.4|style=raw}}
| 49th oscillator
| 26th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 32|32.3]]
| 5
| Found in July {{year|2020}}.<ref name="post100652" />
|-
| {{EmbedViewer|pname=cisbeaconuponlongbookend|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| Cis-beacon up on long bookend; Up beacon on up long bookend
| {{LinkCatagolue|xp2_3hu0og26|style=raw}}
| [https://conwaylife.com/ref/mniemiec/14/14bcle1.rle 14bcle1]
| {{LinkPentadecathlonObject|14P2.8|style=raw}}
| 31st oscillator
| 21st period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 30|30.6]]
| 5
| -
|-
| {{EmbedViewer|pname=transbeaconuponlongbookend|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| Trans-beacon up on long bookend; Down beacon on down long bookend
| {{LinkCatagolue|xp2_03lk46z6401|style=raw}}
| [https://conwaylife.com/ref/mniemiec/14/14bcle4.rle 14bcle4]
| {{LinkPentadecathlonObject|14P2.15|style=raw}}
| 49th oscillator
| 31st period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 32|32.6]]
| 5
| -
|-
| {{EmbedViewer|pname=cisbeacondownonlongbookend|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| Cis-beacon down on long bookend; Up beacon on down long bookend
| {{LinkCatagolue|xp2_318c0fho|style=raw}}
| [https://conwaylife.com/ref/mniemiec/14/14bcle3.rle 14bcle3]
| {{LinkPentadecathlonObject|14P2.6|style=raw}}
| 35th oscillator
| 23rd period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 30|30.9]]
| 5
| -
|-
| {{EmbedViewer|pname=transbeacondownonlongbookend|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| Trans-beacon down on long bookend; Down beacon on up long bookend
| {{LinkCatagolue|xp2_w8o0uh3z32|style=raw}}
| [https://conwaylife.com/ref/mniemiec/14/14bcle2.rle 14bcle2]
| {{LinkPentadecathlonObject|14P2.10|style=raw}}
| 40th oscillator
| 25th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 31|31.9]]
| 5
| -
|-
| {{EmbedViewer|pname=beacononcover|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| Beacon on cover; Beacon and two tails; ?16?450
| {{LinkCatagolue|xp2_wbq2sgz32|style=raw}}
| [https://conwaylife.com/ref/mniemiec/14/14bccv.rle 14bccv]
| {{LinkPentadecathlonObject|14P2.17|style=raw}}
| 49th oscillator
| 46th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 34|34.8]]
| 6
| -
|-
| {{EmbedViewer|pname=cisbeaconondock|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| Cis-beacon on dock; Up beacon on dock
| {{LinkCatagolue|xp2_j1u062goz11|style=raw}}
| [https://conwaylife.com/ref/mniemiec/16/16bcdk1.rle 16bcdk1]
| {{LinkPentadecathlonObject|16P2.20|style=raw}}
| 20th oscillator
| 13th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 28|28.7]]
| 4
| Found in January {{year|2020}}.<ref name="post88604" />
|-
| {{EmbedViewer|pname=transbeaconondock|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| Trans-beacon on dock; Down beacon on dock
| {{LinkCatagolue|xp2_03lk453z6401|style=raw}}
| [https://conwaylife.com/ref/mniemiec/16/16bcdk2.rle 16bcdk2]
| {{LinkPentadecathlonObject|16P2.21|style=raw}}
| 30th oscillator
| 18th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 29|29.9]]
| 5
| Found in January {{year|2020}}.<ref name="post86960" />
|-
| {{EmbedViewer|pname=23p2|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| <s>23P2</s>{{refn|group=note|name=names|Name coined in 2009 by LifeWiki editor (see [https://conwaylife.com/wiki/Special:PermanentLink/3580 this talk]), now discarded due to not indicating minimum population as one may expect.<ref name="post126092" />}}; Trans-beacon on bookend siamese table; 	Down beacon on up bookend siamese table; ?17?691
| {{LinkCatagolue|xp2_09v0c813z321|style=raw}}
| [https://conwaylife.com/ref/mniemiec/17/17bcbta2.rle 17bcbta2]
| {{LinkPentadecathlonObject|17P2.47|style=raw}}
| 44th oscillator
| 42nd period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 34|34.1]]
| 6
| -
|-
| {{EmbedViewer|pname=racetrackandorthobeacon|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| Racetrack and ortho-beacon
| {{LinkCatagolue|xp2_04aab96zc813|style=raw}}
| 18-bit P2 #165
| {{LinkPentadecathlonObject|18P2.334|style=raw}}
| -
| 52nd period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 35|35.5]]
| 5
| -
|-
| {{EmbedViewer|pname=cisbeacononanvil|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| Cis-beacon on anvil; Up beacon on up anvil
| {{LinkCatagolue|xp2_0c813z255d1e8|style=raw}}
| [https://conwaylife.com/ref/mniemiec/19/19bcan1.rle 19bcan1]
| {{LinkPentadecathlonObject|19P2.104|style=raw}}
| 24th oscillator
| 15th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 29|29.1]]{{refn|group=note|A possible predecessor of cis-beacon on anvil consists of a [[list of common evolutionary sequences|common evolutionary sequence]] with 13,484 occurrences hitting a beacon in a snake-type catalysis:
{{EmbedViewer
|pname = cisbeacononanvilpredecessor
|position = center
|viewerconfig = #C [[ ZOOM 16 ]]}}
}}
| 5
| -
|-
| {{EmbedViewer|pname=20p2|position=center|viewerconfig=#C [[ ZOOM 24 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| <s>20P2</s>{{refn|group=note|name=names}}; Mango with beacon on dock; Up beacon on down dock w/ down mango; ?21?004
| {{LinkCatagolue|xp2_wgj1u0og26z25421|style=raw}}
| [https://conwaylife.com/ref/mniemiec/21/21bcdkcg.rle 21bcdkcg]
| {{LinkPentadecathlonObject|21P2.1593|style=raw}}
| 34th oscillator
| 24th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 31|31.2]]{{refn|group=note|A possible predecessor of mango with beacon on dock consists of a common evolutionary sequence hitting a beacon:
{{EmbedViewer
|pname = mangowithbeaconondockpredecessor
|position = center
|viewerconfig = #C [[ ZOOM 16 ]]}}
}}
| 5
| -
|}

== Alternative bushing of beacon ==

A common alternative bushing of the [[diagonal on-off]] features a line of five with a terminal dent. When analyzed in [[isotropic non-totalistic]] notation, one of the [[rotor]] cells turns ON via B3a and OFF via -S4q as in the original beacon, but the other rotor cell uses B3j and -S4k. They are shown in the following table.

{| class="wikitable sortable" style="margin-left:auto; margin-right:auto; text-align:center"
! colspan="2"| Pattern
! colspan="3"| [[File formats|Identifiers]]
! colspan="3"| [[Natural]] [[List of common oscillators|commonness]]
! colspan="2"| [[Glider synthesis]]
|-
! Viewer
! Name
! [[apgcode]]
! [[Mark Niemiec|Niemiec]] 
! [[Heinrich Koenig|Pentadecathlon]]
! Position in [[Achim Flammenkamp's census]]<ref name="achim" />
! Position in [[Adam P. Goucher]]'s [[Catagolue]]<ref name="adam" />
! [[Frequency class]]
! Cost in [[glider]]s
! Info
|-
| {{EmbedViewer|pname=mangled1beacon|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| Mangled 1 beacon; Pre-block on very long table w/feather
| {{LinkCatagolue|xp2_c88b9iczw32|style=raw}}
| [https://conwaylife.com/ref/mniemiec/16/16pvtaft.rle 16pvtaft]
| {{LinkPentadecathlonObject|16P2.88|style=raw}}
| -
| 82nd period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 37|37.2]]
| 6
| -
|-
| {{EmbedViewer|pname=xp2_8e1t2gozw23|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| <s>21P2</s>{{refn|group=note|name=names}}; Pre-block on very long table w/tail; ?16?195
| {{LinkCatagolue|xp2_8e1t2gozw23|style=raw}}
| [https://conwaylife.com/ref/mniemiec/16/16pvtatl.rle 16pvtatl]
| {{LinkPentadecathlonObject|16P2.91|style=raw}}
| 38th oscillator
| 27th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 32|32.5]]
| 5
| -
|-
| {{EmbedViewer|pname=1beacon|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| 1 beacon; Pre-block on very long table w/tail siamese feather; ?18?187
| {{LinkCatagolue|xp2_ca9baiczw32|style=raw}}
| [https://conwaylife.com/ref/mniemiec/18/18pvtatf.rle 18pvtatf]
| {{LinkPentadecathlonObject|18P2.465|style=raw}}
| 32nd oscillator
| 16th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 29|29.4]]{{refn|group=note|A possible dirty predecessor of 1 beacon consists of pi + traffic light + blinker:
{{EmbedViewer
|pname = 1beaconpredecessor
|position = center
|viewerconfig = #C [[ ZOOM 16 ]]}}
}}
| 5
| -
|-
| {{EmbedViewer|pname=xp2_caabaiczw32|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| <s>25P2</s>{{refn|group=note|name=names}}; Pre-block on very long table w/tail siamese tail; ?18?651
| {{LinkCatagolue|xp2_caabaiczw32|style=raw}}
| [https://conwaylife.com/ref/mniemiec/18/18pvtatt.rle 18pvtatt]
| {{LinkPentadecathlonObject|18P2.471|style=raw}}
| 49th oscillator
| 39th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 34|34.0]]
| 5
| -
|-
| {{EmbedViewer|pname=xp2_6a88baiczx32|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| <s>24P2</s>{{refn|group=note|name=names}}; Pre-block on very long table w/tail and head; ?18?688
| {{LinkCatagolue|xp2_6a88baiczx32|style=raw}}
| [https://conwaylife.com/ref/mniemiec/18/18pvtath.rle 18pvtath]
| {{LinkPentadecathlonObject|18P2.420|style=raw}}
| 49th oscillator
| 48th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 35|35.4]]
| 5
| [[goldenratio]] found a 9-glider [[synthesis]] of this oscillator on November 10, {{year|2020}},<ref name="message775916757994963016" /> and [[iNoMed]] found an {{gliders|8}} synthesis in {{year|2021}}.<ref name="message840345670954647592" />
|-
| {{EmbedViewer|pname=xp2_69b8baiczx32|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| <s>22P2</s>{{refn|group=note|name=names}}; Pre- block on very long table w/ tail and curl; ?22?238
| {{LinkCatagolue|xp2_69b8baiczx32|style=raw}}
| [https://conwaylife.com/ref/mniemiec/20/20pvtatc.rle 20pvtatc]
| {{LinkPentadecathlonObject|20P2.2254|style=raw}}
| 44th oscillator
| 30th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 32|32.6]]
| 5
| -
|-
| {{EmbedViewer|pname=xp2_69b8b9iczx32|position=center|viewerconfig=#C [[ ZOOM 32 THUMBSIZE 4 GPS 1 AUTOSTART LOOP 2 ]]}}
| <s>26P2</s>{{refn|group=note|name=names}}; Pre-block on very long table w/feather and curl; ?20?423
| {{LinkCatagolue|xp2_69b8b9iczx32|style=raw}}
| [https://conwaylife.com/ref/mniemiec/20/20pvtafc.rle 20pvtafc]
| {{LinkPentadecathlonObject|20P2.2235|style=raw}}
| 49th oscillator
| 44th period-2 oscillator
| [[:Category:Patterns with Catagolue frequency class 34|34.4]]
| 6
| -
|}

==Notes==
<references group="note" />

==References==
<references>
<ref name="message775916757994963016">{{CiteDiscord
|author  = goldenratio
|date    = November 10, 2020
|channel = cgol
|id      = 775916757994963016
}}</ref>
<ref name="message840345670954647592">{{CiteDiscord
|author  = iNoMed
|date    = May 7, 2021
|channel = bots-and-mute-this
|id      = 840345670954647592
}}</ref>
<ref name="post86960">{{LinkForumThread
|format = ref
|p      = 86960
|title  = Re: Soup-based syntheses
|author = Ian07
|date   = January 4, 2020
}}</ref>
<ref name="post88604">{{LinkForumThread
|format = ref
|p      = 88604
|title  = Re: 4 glider syntheses
|author = Ian07
|date   = January 31, 2020
}}</ref>
<ref name="post100652">{{LinkForumThread
|format = ref
|p      = 100652
|title  = Re: Randomly enumerating glider syntheses
|author = Ian07
|date   = July 18, 2020
}}</ref>
<ref name="post126092">{{LinkForumThread
|format = ref
|p      = 126092
|title  = Re: Thread for basic questions
|author = Dave Greene
|date   = March 18, 2021
}}</ref>
</references>

[[Category:Lists of oscillators with specific period|2]]
[[Category:Lists of patterns]]
[[Category:Lists of patterns with synthesis costs]]
[[Category:Oscillators with rotor Diagonal on-off]]