Amateur Radio Wiki - User contributions [en]

Random Wire Antenna

2011-01-08T16:10:34Z

VE3NGS:

A "Random Wire" antenna is an end-fed antenna that is operated against ground or an artificial ground system - much like a vertical antenna. The "Random Wire" must normally be coupled to the transmitter by an [[Impedance_matching|ATU]] (except if it happens to be in resonance on some amateur band).

A popular length is 7m. This does not provide excessive impedances for the ATU to tune out for bands between 80 and 10m.

Jack Clarke VE3EED adds that for optimum performance, "random length" antennas should not be multiples of half wavelengths in the intended bands. The following table reproduced with permission from his [http://www.jackclarke.net/hamdnld.htm website] details half wave lengths that should be avoided (all measurements are in feet):

<table border="1" cellpadding="6" cellspacing="0" width="58%">
<tr>

<td width="20%" align="center">Frequency
MHz</td>
<td width="20%" align="center">1/2
Wave</td>
<td width="20%" align="center">2nd
Multiple</td>
<td width="20%" align="center">3rd
Multiple</td>
<td width="20%" align="center">4th
Multiple</td>
</tr>

<tr>
<td width="20%" align="right">1.9</td>
<td width="20%" align="right">246</td>
<td width="20%" align="right">492</td>
<td width="20%" align="right">738</td>
<td width="20%" align="right">984</td>

</tr>
<tr>
<td width="20%" align="right">3.8</td>
<td width="20%" align="right">123</td>
<td width="20%" align="right">246</td>
<td width="20%" align="right">369</td>
<td width="20%" align="right">492</td>

</tr>
<tr>
<td width="20%" align="right">7.2</td>
<td width="20%" align="right">65</td>
<td width="20%" align="right">130</td>
<td width="20%" align="right">195</td>
<td width="20%" align="right">260</td>

</tr>
<tr>
<td width="20%" align="right">10.1</td>
<td width="20%" align="right">46</td>
<td width="20%" align="right">92</td>
<td width="20%" align="right">138</td>
<td width="20%" align="right">184</td>

</tr>
<tr>
<td width="20%" align="right">14.2</td>
<td width="20%" align="right">33</td>
<td width="20%" align="right">66</td>
<td width="20%" align="right">99</td>
<td width="20%" align="right">132</td>

</tr>
<tr>
<td width="20%" align="right">18.1</td>
<td width="20%" align="right">26</td>
<td width="20%" align="right">52</td>
<td width="20%" align="right">78</td>
<td width="20%" align="right">104</td>

</tr>
<tr>
<td width="20%" align="right">21.3</td>
<td width="20%" align="right">22</td>
<td width="20%" align="right">44</td>
<td width="20%" align="right">66</td>
<td width="20%" align="right">88</td>

</tr>
<tr>
<td width="20%" align="right">24.9</td>
<td width="20%" align="right">19</td>
<td width="20%" align="right">38</td>
<td width="20%" align="right">57</td>
<td width="20%" align="right">76</td>

</tr>
<tr>
<td width="20%" align="right">28.5</td>
<td width="20%" align="right">16</td>
<td width="20%" align="right">32</td>
<td width="20%" align="right">48</td>
<td width="20%" align="right">64</td>

</tr>
</table>

Further calculations by Jack led him to produce the following list of "preferred" list of antenna lengths, to avoid half wavelengths and their multiples (measurements in feet):

29 35.5 41 58 71 84 107 119 148 203 347 407 423

== Advantages and Uses ==
A random wire Antenna is used in conjunction with an antenna tuner to achieve resonance over a range of bands. The advantage being that it can be used without the need to make physical reconfigurations to the antenna system in order to change bands.

== Basic Construction ==
The basic design of a random length wire Antenna consists of a driven wire of a length that does not correspond to the wavelength of the intended Band and a grounded plane of conductive material such as steel. It differs physically from a Vertical in that ???.

{{antennas}}

Twitters

2011-01-08T15:56:39Z

VE3NGS:

* [http://hamfeed.com/ HF hamfeed] ham repeater for Twitter

* [http://twitter.com/ve3osc Ontario Science Centre Amateur Radio Club] Toronto, Canada

{{websites}}

New Zealand - Personal Sites

2011-01-08T15:48:16Z

VE3NGS: Created page with "'''North Island''' [http://neilsanderson.com/?page_id=61 ZL1NZ Auckland]"

'''North Island'''

[http://neilsanderson.com/?page_id=61 ZL1NZ Auckland]

Personal Ham Radio Websites

2011-01-08T15:46:32Z

VE3NGS: /* Please note */

Related wiki pages: [[Websites]]

Please consider adding a link to this wiki on your personal web page. Cross-linking of this sort helps everyone.

== Please note ==

When adding websites to these pages it is much more useful to users if a brief outline of where the page owner is from is included. An alphabetical list of callsigns is next to useless for people searching the site.

[[Australia - Personal Sites]]

[[Canada - Personal Sites]]

[[Ireland - Personal Sites]]

[[Japan - Personal Sites]]

[[Malaysia - Personal Sites]]

[[New Zealand - Personal Sites]]

[[Spain - Personal Sites]]

[[UK - Personal Sites]]

[[USA - Personal Sites]]

{{websites}}

Canada - Personal Sites

2011-01-08T15:43:43Z

VE3NGS: Created page with "'''Ontario''' [http://neilsanderson.com/?page_id=61 VE3NGS Toronto]"

'''Ontario'''

[http://neilsanderson.com/?page_id=61 VE3NGS Toronto]

Clubs/New Zealand

2011-01-08T15:40:09Z

VE3NGS:

* [http://www.nzart.org.nz/ New Zealand Association of Radio Transmitters] The national organisation for hams in NZ

Clubs/New Zealand

2011-01-08T15:37:04Z

VE3NGS: Created page with "New Zealand Association of Radio Transmitters [http://www.nzart.org.nz/]"

New Zealand Association of Radio Transmitters [http://www.nzart.org.nz/]

Clubs/Canada

2011-01-08T15:26:55Z

VE3NGS: /* South */

== National/Regional ==
* [http://www.rac.ca Radio Amateurs of/du Canada]
* [http://www.raqi.ca Radio Amateur du Québec]

== Local clubs ==
=== Atlantic Region===
''See also http://rac.ca/cdn_clubs/region_atlantic.htm ''

Dominion of Newfoundland (VO1, VO2)
* [http://vo1brk.com Baccalieu Amateur Radio Klub], Carbonear (Avalon North)
* [http://www.angelfire.com/nf/SAARA/ Saint Anthony] Amateur Radio Association
* [http://www.sonra.ca Society of Newfoundland Radio Amateurs], St. Johns

Prince Edward Island (VY2)
* [http://www.gov.pe.ca/infopei/index.php3?number=2785&lang=E Charlottetown] Amateur Radio Club, Charlottetown
* [http://www.summersidearc.com/ Summerside] Amateur Radio Club, Summerside

Nova Scotia (VE1)
* [http://personal.nbnet.nb.ca/dmallet Dalhousie] Amateur Radio Club
* [http://lcarc.tripod.com/main.html Lunenburg County] Amateur Radio Club, Bridgewater
* [http://accesswave.ca/~leoadler/darc.html Dartmouth] Amateur Radio Club, Dartmouth VE1YO
* [http://www.sdickson.com/tarc Truro] Amateur Radio Club, Debert
* [http://qcarc.ve1cfy.net Queens County] Amateur Radio Club, Greenfield
* [http://www.kcarc.ns.ca Kings County] Amateur Radio Club, Kentville
* [http://nsara.ve1cfy.net Nova Scotia] Amateur Radio Association, Mahone Bay
* [http://www.qsl.net/ve1mrs/index.html Marconi] Amateur Wireless Society, Sidney
* [http://www.yarmouthweb.com/yarc/ Yarmouth] Amateur Radio Club, Yarmouth

New Brunswick (VE9)
* [http://www3.nbnet.nb.ca/ve9nd Fredricton] Amateur Radio Club
* [http://www.unbf.ca/clubs/ham/ University of New Brunswick] Amateur Radio Club
* [http://www.marg.8k.com Miramachi] Amateur Radio Club
* Club Radio Amateur [http://www.members.tripod.com/restigouche Restigouche], St-Quentin NB

===Québec (VE2/VA2) ===
''Voir aussi http://rac.ca/cdn_clubs/region_quebec.htm et http://www.raqi.ca/node/5 ''

==== Greater montreal area ====

* [http://www.marc.qc.ca Montréal Amateur Radio Club], Dorval
* [http://www.wiarc.ca West Island Amateur Radio Club], Montréal West Island
* [http://cuarc.ca/ Concordia University Amateur Radio Club], Montréal
* [http://ve2.ele.etsmtl.ca Club Radio Amateur Ecole de Technologie Supérieure], Montréal
* [http://www.qsl.net/ve2pwc Club de Radio Amateurs Pratt & Witney], Longeuil
* [http://ve2ums.ca L’Union Métropolitaine des Sans-filistes de Montréal]
* [http://www.ve2clm.ca Club Radio Amateur Rive Sud de Montréal]
* [http://www.dstarmontreal.com L'Association D-Star Montréal]
* [http://www.ve2cev.qc.ca Club Radio Amateur Sud Ouest], Mercier
* [http://ve2crl.qc.ca Club Radioamateur Laval Laurentides]

==== Sageunay / Lac St-Jean ====

* [http://www.raqi.ca/va2crr Association Régionale Radioamateur], Saguenay - Lac Saint Jean
* [http://www.royaume.com/~crab Club Radio Amateur Baieriverain], Ville de La Baie
* [http://www.raqi.ca/~ve2clt Club de Radio Amateur La Tuque]

==== Centre du Québec ====

* [http://www.9bit.qc.ca/ve2crd Club Radio Amateur de Drummondville]
* [http://www.raqi.ca/~ve2crd Club Radio Amateur de Drummondville]
* [http://www.raqi.ca/~ve2rgm Club Radio Amateurs de Grand-Mère]
* [http://www.hamfest.qc.ca Club Radio Amateur Sorel-Tracy]
* [http://www.ve2cbs.qc.ca Club Radio Amateur Sorel-Tracy]
* [http://pages.infinit.net/ve2ckc Club Radio Amateur de Contrecoeur]

==== Hull / Gatineau ====

* [http://pages.videotron.com/delta/arai/ Association des Radio-Amateurs Independants], Arntfield
* [http://www.ve2reh.net Association des Radio Amateurs Indépendants], Ange-Gardien (Buckingham)
* [http://ve2uqh.uqo.ca Club de Radio Amateur Outaouais], Hull-Gatineau

==== Estrie ====

* [http://raqi.ca/braq Ballon Radio Amateur du Québec], Acton Vale
* [http://raqi.ca/ve2cld Townshippers' Club Radio Amateur], Cowansville-Magog-Estrie
* [http://raqi.ca/ve2crg Club Radio-Amateur de Granby]
* [http://raqi.ca/ve2cvr Club radioamateur de la vallée du Richelieu] VE2CVR
* [http://www.raqi.ca/~ve2rae Club Radio Amateur de l'Estrie], Sherbrooke
* [http://raqi.ca/ve2csp Club de Radioamateur de Portneuf]

===Ontario (VE3/VA3) ===
''See also http://rac.ca/cdn_clubs/region_ontario_no.htm and http://rac.ca/cdn_clubs/region_ontario_south.htm ''
====North/East====
* [http://www.igs.net/~va3aar Almonte] Radio Repeater League
* [http://64.71.55.79/VE3STP/ Champlain Regional Repeater Association], Arnprior
* [http://www.igs.net/~whisper/ve3yyx.htm VE3YYX], Arnprior
* [http://www.qarc.on.ca Quinte] Amateur Radio Club, Belleville
* [http://www.qsl.net/sbrag Strange Brew Radio Amateur Group], Belleville
* [http://www.barc-on.com Brockville] Amateur Radio Club
* [http://tcarc.ca/ Tri-County Amateur Radio Club], Campbellford-Peterborough-Northumberland, VA3TRI
* [http://www.wcarc.on.ca/ West Carleton] Amateur Radio Club, Carp
* [http://www.northumberland.com/harc Heritage Amateur Radio Club], Cobourg-Port Hope
* [http://www3.sympatico.ca/tim.smith2/index.htm Seaway Valley] Amateur Radio Club, Cornwall
* [http://www.cco.ve3xd.com Ontario Contest Club], Garson, VA3CCO
* [http://www.iroquoisarc.ca Iroquois] Amateur Radio Club
* [http://www.ve3kbr.com Kingston] Amateur Radio Club
* [http://www.qsl.net/ve3lgs/ve3knr.htm VE3KNR Group], Kingston
* [http://www.va3kvd.ca/vhara/ Victoria Haliburton] Amateur Radio Association, Lindsay
* [http://www.geocities.com/CapeCanaveral/Launchpad/2552/ Manitoulin] Amateur Radio Club
* [http://www.ve3rix.ca Manotick] Amateur Radio Group
* [http://www.qsl.net/va3pla VA3PLA], McArthur Mills (Bancroft)
* [http://www.qsl.net/ve3min/ Minden] Amateur Radio Club
* [http://ciinet.org/nbarc North Bay] Amateur Radio Club
* [http://www.emrg.ca Ottawa] ARES
* [http://oarc.net Ottawa] Amateur Radio Club
* [http://www.qsl.net/orag Ottawa Region APRS] Group
* [http://www.ovmrc.on.ca Ottawa Valley] Mobile Radio Club
* [http://www.qcwa70.org Quarter Century Wireless Association], Ottawa
* [http://www.magma.ca/~glemire/amradio.html Renfrew County] Amateur Radio Club, Pembroke
* [http://perc.lks.net Prince Edward Radio Club], Picton
* [http://www.zrr.on.ca/ VE3ZRR Repeater Group], Renfrew
* [http://www.qsl.net/algomaarc/index.htm Algoma] Amateur Radio Club, Sault Ste. Marie
* [http://members.shaw.ca/VE3SCA/ Algoma Seniors Electronic Communicators], Sault Ste. Marie, VE3SCA
* [http://www.falls.igs.net/~rlarc Rideau Lakes] Amateur Radio Club, Smiths Falls
* [http://www.ve3srg.com Sudbury] Amateur Radio Club
* [http://www.larclub.net Lakehead] Amateur Radio Club, Thunder Bay
* [http://www.geocities.com/capecanaveral/Hangar/8312/index Timmins] Amateur Radio Club
* [http://www.qsl.net/ve3ytr Trenton] Amateur Radio Club

====South====
* [http://oscarc.com Ontario Science Centre] Amateur Radio Club, Toronto
* [http://amherstburg.hfradio.net Amherstburg] Radio Club
* [http://ve3ba.com Brantford] Amateur Radio Club
* [http://www.harc.on.ca/OrgSite/harc/index.htm Halton] Amateur Radio Club, Georgetown
* [http://www.kwarc.org Kitchener-Waterloo] Amateur Radio Club
* [http://radios345.spaces.live.com Sun Parlour] Amateur Radio Club, Leamington
* [http://groups.yahoo.com/group/london_senior_ARC_Group/ London] Senior Amateur Radio Club
* [http://sort.tripod.com Southern Ontario Repeater Team], London
* [http://www.alslinkwith.com/ve3lsr Lake Simcoe] Repeater Association
* [http://juliet.albedo.net/~gbarc Georgian Bay] Amateur Radio Club, Owen Sound
* [http://www.ve3spc.org South Pickering] Amateur Radio Club
* [http://www.nparc.on.ca/content/home Niagara Peninsula] Amateur Radio Club, St. Catharines
* [http://www.qsl.net/ve3fcg Festival City] Amateur Radio Club, Stratford
* [http://www.ve3we.org Scarborough] Amateur Radio Club
* [http://www3.sympatico.ca/gblair/ssmrc Seven Seas] Maritime Amateur Radio Club, Toronto
* [http://jproc.ca/sarc Skywide] Amateur Radio Club, Toronto
* [http://www.tfmcs.com Toronto FM] Communications Society
* [http://www.ve3jj.com West Side] Amateur Radio Club, Toronto
* [http://qcwa.ca Quarter Century Wireless Association], Waterloo
* [http://home.cogeco.ca/~bcrc/ Border City] Radio Club, Windsor-Détroit
* [http://www.yrarc.com/yrarc York Region] Amateur Radio Club

===Midwest Region===
''See also http://rac.ca/cdn_clubs/region_midwest.htm ''

Manitoba (VE4)
* [http://www.mts.net/~tbarrett Brandon] Amateur Radio Club
* [http://www.mts.net/~dsnydal/austin.html Manitoba Amateur Radio Museum], Brandon
* [http://www.ve4sss.ca/ Triple-S Communications], Selkirk
* [http://www.qsl.net/ve4tg/ Eastman] Amateur Radio Club, Selkirk
* [http://www.mb-repeater-society.ca Manitoba Repeater Society], Southern MB (regional)
* [http://www.mts.net/~warc/ Winnipeg] Amateur Radio Club
* [http://www.winnipegares.ca/ Winnipeg] Amateur Radio Emergency Service (ARES)

Saskatchewan (VE5)
* [http://ve5brc.amateur-radio.ca Battlefords] Amateur Radio Association
* [http://www.qsl.net/ve5qu/ Lakeland] Amateur Radio Association
* [http://www.ve5trf.sasktelwebsite.net/ve5ma/ Moose Jaw] Amateur Radio Club
* [http://sarl.ca Saskatchewan] Amateur Radio League, Moose Jaw
* [http://www.ve5nn.ca Regina] Amateur Radio Club
* [http://ve5aa.dyndns.org/ Saskatoon] Amateur Radio Club
* [http://sarl.ca/mars/old_site/ Meewasin] Amateur Radio Club, Saskatoon
* [http://parc.sasktelwebsite.net Parkland] Amateur Radio Club, Yorkton

===Western Region===
''See also http://rac.ca/cdn_clubs/region_western.htm ''

Alberta (VE6)
* [http://www.eidnet.org/local/tjorgens Brooks] Amateur Radio Club
* [http://www.gwlinton.com/ccc Calgary] Communications Club
* [http://saralink.ca Southern Alberta Repeater Association], Calgary
* [http://www.ve6cnp.com/ Crows Nest Pass] Amateur Radio Society
* [http://narc.net Northern Alberta ] Radio Club, Edmonton
* [http://www.ncaarc.ca/ North Central Alberta] Amateur Radio Club, Edmonton
* [http://www.qcarc.net/ Quarter Century] Amateur Radio Club, Edmonton
* [http://www.fars.ca Foothills] Amateur Radio Society, High River
* [http://www.lloydminster.org/sarc/ SaskAlta] Radio Club, Lloydminster
* [http://mharc.ca Medicine Hat] Amateur Radio Club
* [http://www.qsl.net/ve6voa/ Southeast Alberta] Amateur Radio Club, Medicine Hat
* [http://www.ve6arc.net/joomla/ Peace Country] Amateur Radio Club, Peace River
* [http://www.caarc.ca Central Alberta] Amateur Radio Club, Red Deer
* [http://www.qsl.net/srvc/ Strathcona Radio Volunteers], Strathcona County
* [http://www.eharc.net Eagle Hill] Amateur Radio Society, Vegreville
* [http://www.obsd.com/qcwa-chapter151 Quarter Century Wireless Association]

Northwest Territories (VE8)

Nunavut (VY0)

===British Columbia and Yukon===
''See also http://rac.ca/cdn_clubs/region_pacific.htm ''

British Columbia (VE7)
* [http://www.bcdxc.org British Columbia DX] Club
* [http://www.ve7bar.org Burnaby] Amateur Radio Club
* [http://www.geocities.com/ve7caq Beaver Valley] Amateur Radio Club
* [http://www.ve7rva.ca Fraser Valley] ARES Society
* [http://www.cvham.com Comox Valley] Amateur Radio Club
* [http://www.ve7scc.com Coquitlam] Amateur Radio Club
* [http://www.deltaamateurradio.com Delta] Amateur Radio Society
* [http://www.cvars.ca Cowichan Valley] Amateur Radio Society
* [http://www.gfarc.ca Grand Forks] Amateur Radio Club
* [http://www.rainbowcountry.bc.ca/harc Hope] Amateur Radio Club
* [http://www.karc.ca Kamloops] Amateur Radio Club
* [http://ocarc.linsati.com Orchard City] Amateur Radio Club, Kelowna
* [http://www.qsl.net/ekarc East Kootenay] Amateur Radio Club
* [http://www.dmorehouse.com VE7EDA], Kootenay
* [http://www.langleyamateurradio.com Langley] Amateur Radio Association
* [http://www.ve7rmr.ca Maple Ridge] Amateur Radio Club
* [http://records.viu.ca/~mcars/mcars1.htm Malaspina College] Amateur Radio Society
* [http://www.ve7na.ca Nanaimo] Amateur Radio Association
* [http://www.nwarc.org New Westminster] Amateur Radio Club
* [http://www.nsarc.ca North Shore] Amateur Radio Club
* [http://www3.telus.net/oarc Oliver] Amateur Radio Club
* [http://www.mira-orca.ca Mid-Island] Radio Association, Vancouver Island
* [http://www2.vip.net/~bcox/seniorcl.htm Penticton Seniors] Radio Club
* [http://www.arrowsmitharc.ca Arrowsmith] Amateur Radio Club, Port Alberni
* [http://www.pgarc.org Prince George] Amateur Radio Club
* [http://www.rarclub.ca Richmond] Amateur Radio Club
* [http://www.pemo.ca Peninsula Emergency Measures Organization], Saanich Peninsula
* [http://www3.telus.net/ve7sar Surrey] Amateur Radio Club
* [http://terraceamateurradio.net Terrace] Amateur Radio Club
* [http://www.horizon.bc.ca/~varpa Victoria] Amateur Radio Packet Association
* [http://www.rainbowcountry.bc.ca/vapo Vancouver Area] Packet Organization
* [http://www.wrarc.ca White Rock] Amateur Radio Club
* [http://www.bcfmca.bc.ca British Columbia FM Communications] Association
* [http://www.vectorradio.ca Vancouver Emergency Community Telecommunications Organization]
* [http://www.ve7rcn.ca Base] Amateur Radio Service, CFB Esquimalt, Victoria
* [http://www.islandnet.com/~jyoung/FARSC Friendship] Amateur Radio Service Club, Victoria
* [http://www3.telus.net/ve7ia VE7RBA], Victoria
* [http://www.microsec.net/vcc.html Victoria] Communications Club
* [http://www.ve7vic.ca/ Westcoast] Amateur Radio Association, Victoria

Yukon (VY1)
* [http://www.yara.ca Yukon] Amateur Radio Association

== Repeater councils ==
''See also http://www.rac.ca/opsinfo/coordina.htm ''

* [http://www.bcarcc.org British Columbia] Amateur Radio Co-ordination Council
* [http://www.mts.net/~warc/marcc Manitoba] Amateur Repeater Co-ordination Council
* [http://www3.nf.sympatico.ca/ken.diane/director.htm VO] Amateur Radio Association, Newfoundland
* [http://www.ciinet.org/repeater/index.html Northern Ontario] repeater list
* [http://www.slvrc.org St. Lawrence Valley] Repeater Council, Eastern Ontario
* [http://www.wnysorc.org Western New York - Southern Ontario] Repeater Council, Toronto-Niagara-Buffalo
* [http://www.ccfq.net/node/12 Comité de co-ordination de fréquences], RAQI Québec
* [http://www.marine-electronics.net/ve1aic MARCAN], Prince Edward Island
* [http://sarl.ca/saskatchewan-repeater-directory.php Saskatchewan] Amateur Radio League

== QSL bureaux ==
* RAC [http://www.magma.ca/~ve3exy/qsl_tips.html outbound], [http://www.rac.ca/service/qsl1.htm incoming (by province)]
* RAQI [http://raqi.ca/qsl_partante/Bureausortant.htm outbound], [http://cafe.rapidus.net/jacqdube/index.html incoming]

== See also ==

* [[Clubs]]
* [[Associations]]

{{organisations}}