APRSWiki - User contributions [en]

VoiceAlert

2010-08-09T18:46:40Z

K0NGA:

== Concept ==

Voice Alert is quite simply setting your (Kenwood) APRS rig to PL tone squelch 100.0 Hz (for North America) (See notes for PL tone frequancies used in other countries) with the volume turned up to mid range.

This is particularly easy on APRS-enabled rigs (such as the Kenwood [[TH-D7A]](g) handheld, the [[TM-D700]]/[[TM-D710]] mobiles and the [[Yaesu FTM-350R]]) since they can mute the speaker with a PL tone squelch while still receiving packets. Other rigs which use the 6 pin mini-din packet connector are also suitable for this mode because they allow the [[TNC]] to connect to the radio ahead of the PL tone decoder. The speaker jack of the radio is not a suitable connection for two reasons:
# The audio will not be heard because a plug is plugged into the speaker jack, and
# the PL tone decoder will prevent the TNC from decoding most packets.

'''''No digipeater should ever transmit a 100.0hz PL tone!'''''

'''''Only stations with a live operator present should transmit a PL tone of 100.0hz'''''

The concept is really simple. If there is an operator present at an aprs station, the radio should transmit a 100.0 Hz PL tone with each packet. Any other Voice Alert APRS station within simplex range will hear the packet and know that they are within range of another station. If one wishes to talk to the other, he simply calls on the APRS frequency using the PL tone. The idea here is to keep it short - just state the person's callsign and ask them to QSY to a voice frequency. Keep in mind that most digipeaters do not stand down for non packet signals, so it is likely that any voice traffic on the aprs frequency will end up doubling with other packets.

What makes Voice Alert so intriguing is that it allows a traveler to conveniently listen for other live stations. Can you imaging calling CQ CQ every minute on 146.52 while traveling? With the voice alert system, your aprs station's normal position beacon becomes a "sonar ping" to other nearby people.

It has also been suggested that if a non-standard PL tone were to be used, it would be like a private voice alert.

Non-standard PL tones have also been used on various digipeaters to verify local coverage areas. The trick here is to put a different PL tone on each of the local digipeaters and tune your PL tone squelch to one of them as you travel around town. You'll hear every packet the digipeater transmits and can assess the signal quality without having to take your eyes off the road.

== Alternate Notification ==

The [[Yaesu FTM-350R]] has a "Bell Ringer" feature (menu option J01 in the Signaling section) that will emit a "bell" sound when the radio receives a signal encoded with the [[CTCSS]] tone or [[DCS]] code set for the receiver. This setting is independent for the left and right side receivers. This feature could be use to detect an APRS transmission with the PL tone with a "bell" sound rather than packet noise.

== No APRS Gear? ==
Tune your 2 meter FM transceiver to 144.390 MHz and configure encode and decode [[CTCSS]] 100 Hz. When APRS stations configured with voice alert are near, their packets will be passed to the radio's speaker, letting you know that someone is in range and probably listening. You won't know their call sign, but give a general CQ, or "calling APRS Voice Alert Stations" on the frequency to make contact, then change to another simplex frequency.

== Notes ==
* The Voice Alert PL tone used in Australia (VK) is 91.5 Hz
* The Voice Alert PL tone used in Europe is 136.5 Hz

== Links ==
* [http://www.aprs.org/VoiceAlert3.html Voice Alert page at APRS.ORG]

Talk:Yaesu FTM-350R

2010-08-09T16:59:11Z

K0NGA: New page: I cannot upload files. When I click the "Upload file" link, it gives me an error that the directory isn't writable.

I cannot upload files. When I click the "Upload file" link, it gives me an error that the directory isn't writable.

Hardware

2010-08-09T16:42:06Z

K0NGA: /* APRS-capable Transceiver */

== APRS-capable Transceiver ==
* [[Alinco]]
** [[Alinco DR-135]] plus [[T2-135]] S/M [[TNC]] which fits inside Alinco
** [http://www.alinco.com/Products/DR-620/ Alinco DR-620T] (Discontinued)
** [http://www.alinco.com/Products/DR-635/ Alinco DR-635T]
* [[Bionics]]
** [http://www.byonics.com/microtrak/mt-tt4.php Micro-Trak TinyTrak4]
** [http://www.byonics.com/microtrak/mtaio.php Micro-Trak AIO (All In One)]
* [[FC-301/D]] - 5-watt transceiver includes an integrated [[Tracker2]] [[TNC]] board.
* [[Kenwood]]
** [[Kenwood TH-D7A]], [[TH-D7A]](G), [[TH-D7E]]
** [[Kenwood TH-D72]] - [http://www.rigpix.com/kenwood/thd72.htm link]
** [[Kenwood TM-D700]] (Discontinued)
** [[Kenwood TM-D710]]
* [[Yaesu]]
** [[Yaesu VX-8R]]
** [[Yaesu VX-8DR]]
** [[Yaesu VX-8GR]]
** [[Yaesu FTM-350R]]

== TNC, Digipeaters and Modems ==
* [[AEA TNC PK-232MBX]] (see TimeWave)
* [[Alinco EJ-41U]] - original TNC for [[Alinco DR-135]]
* [http://www.byonics.com/microtrak/mt-tt4.php Byonics Portable Digipeater/Tracker]
* [[DRSI DPK-2]]
* [[DRSI DPK-9600]]
* [[Kantronics]]
** [[Kantronics KAM-98]] -- (Discontinued)
** [[Kantronics KAM-XL]]
** [[Kantronics KPC-3]] -- (Discontinued)
** [[Kantronics KPC-3+]] -- Packet Communicator, Full-function TNC/digipeater
** [[Kantronics KPC-9612]] -- (Discontinued)
** [[Kantronics KPC-9612+]] -- Packet Communicator
** [http://www.kantronics.com/products/kwm1200.html Kantronics KWM-1200+ Wireless Modem]
** [http://www.kantronics.com/products/kwm9612.html Kantronics KWM-9612+ Wireless Modem]
** [[Kantronics MT1200]] -- Wireless Modem with optional embedded [[GPS]]
* [[Kenwood RC-D710]]
* [[MFJ]]
** [[MFJ-1270]] -- TNC-2 Packet Controller
** [[MFJ-1276]]
** [[MFJ-1278]]
** [http://mfjenterprises.com/Product.php?productid=MFJ-8621 MFJ-8621]
** [http://mfjenterprises.com/Product.php?productid=MFJ-8621X2 MFJ-8621X2]
* [http://www.usmartdigi.com/ µSmartDigi(tm) Digi and D-STAR Gateway]
* [http://www.paccomm.com/ Paccomm]
* [[PacComm PicoPacket]]
* [[SCS DSP-TNC/TRACKER ROBUST Packet Digipeater/Tracker]][http://www.scs-ptc.com/datasheets/scs_datasheet_tracker_english.pdf]
* [http://www.tapr.org/ TAPR]
* [http://www.timewave.com/ TimeWave]
* [[TinyTrak4]]
* [[TNCX|TNC-X]] -- Kiss-only TNC
* [[Tracker 2]] Kiss-only TNC/digipeater/tracker/anti-tracker (NEW)
* [[USB micro TNC PLUS]]
* [http://www.ir3ip.net/iw3fqg/uidigi.htm UIDIGI] -- Digipeater firmware for TNC2 (and compatible) TNCs

== APRS Trackers ==
* [http://www.aprs.pl/deluxe.htm APRS Deluxe] - ex: FoaPack from SQ2FOA
* [http://www.aprs-navigator.com/ APRS Navigator] (NEW)
* [http://ezkits.illumicon.nl/en/aprstracker.shtml Aprstracker2] (uses PIC16F690)

* [http://www.bigredbee.com/beelinegps.htm BeeLine GPS]
* [[DMATrak]]

* [http://www.foxdelta.com/products/foxtrak.htm FoxTrak] (uses PIC 16F84A)
* [[FreeTrak]] Open source B.I.Y.S.(NEW)
* [http://www.hamhud.net HamHud] Open source heads-up display for APRS (NEW version coming soon)
* [[KF161Tracker|KF161-Tracker]]
* [[KF163Tracker|KF163-Tracker]]
* Micro-Trak
** [[Micro-Trak 200 FA]] - [http://www.byonics.com/microtrak/mt200fa.php a frequency agile 2-meter FM transmitter combined with a TinyTrak 3 controller chip]
** [[Micro-Trak 300]] - Original 300mW Micro-Trak, without the 8 watt amplifier
** [[Micro-Trak 8000]] - [http://www.byonics.com/microtrak/mt8000.php An 8 watt version of the Micro-Trak 300]
** [[Micro-Trak 8000 FA]] - [http://www.byonics.com/microtrak/mt8000fa.php An 8 watt, frequency agile Micro-Trak]
** [[Micro-Trak AIO]] - [http://byonics.com/microtrak/mtaio.php Micro-Trak All-In-One portable Tracker]
** [[Micro-Trak BFT]] - [http://www.byonics.com/microtrak/mtbft.php 35 watt Micro-Trak transmitter]
** [[Micro-Trak TT4]] - [http://www.byonics.com/microtrak/mt-tt4.php TinyTrak4 with a radio transceiver]

* [http://home.wi.rr.com/n9uur/mim.html MIM] and another link: [http://web.usna.navy.mil/~bruninga/mim22.html MIM]
* [[OpenTracker]]
** [[OpenTracker Rev 1]]
** [[OpenTracker Rev 2]]
** [[OpenTracker Rev 3]]
** [[OpenTracker Rev 4]]
** [[OpenTracker+]] aka [[OpenTracker+|OT+]] aka [[OpenTracker+|OT1+]]
** [[OpenTracker1+ SMT]] aka [[OT1+ SMT]] - [[OpenTracker+|OT1+]] w/receive capability

* [http://www.aargang64.dk/aprs/docs/txtrack.html OZ4HZ's Tracker] with 5w transmitter
* [[PocketTracker]] (Discontinued)
* [[RTrak]] - All In One Tracker

* [[MicEncoder|TAPR Mic-Encoder]] (Discontinued)
* [http://www.tapr.org/kits_pic-e.html TAPR Pic-Encoder] (Discontinued)
* [[TinyTrak]]
** [[TinyTrak|TinyTrak 1/2/3/3a]]
** [[TinyTrak3+]]
** [[TinyTrak4]]
** [[TinyTrak4D]] - A [[TinyTrak4]] with a 20x4 display and keyboard port
** [[TinyTrak SMT]]
* [[TigerTrak]]
** [[TigerTrak TM-1]] - [http://www.tigertronics.com/tm1.htm link]
** [[TigerTrak TM-1+]] - [http://www.tigertronics.com/tm1.htm link]
* [[Tracker2]]
** [[Tracker2 model OT2m]] aka [[OpenTracker 2m]] aka [[OT2m]] - [http://groups.yahoo.com/group/tracker2/ link1] or [http://www.argentdata.com/products/tracker2.html link2]
** [[Tracker2 model T2-135]] aka [[T2-135]] - Tracker for [[Alinco DR-135]]
** [[Tracker2 model T2-301]] aka [[T2-301]] aka [[FC-301/D]] - [[Tracker2]] [[TNC]] board includes 5-watt transceiver

* [http://www.navcom.co.nz/zares/zpac.html ZPac] OpenTracker inside Handheld radio's battery pack
* [[SCS DSP-TNC/TRACKER ROBUST Packet Digipeater/Tracker]][http://www.scs-ptc.com/datasheets/scs_datasheet_tracker_english.pdf]

== Weather Sensors ==
*[http://www.aagelectronica.com/ AAG] (One-wire)
*[http://www.columbiaweather.com/WeatherStations.html Columbia Weather Systems] (Capricorn Weather Stations)
*[[DallasSemi|Dallas Semiconductor]] (One-wire)
*[http://www.davis.com Davis]
*[http://www.xpondr.com/041202/flood_advisor.html Flood Advisor]
*[http://www.thunderheadtech.com/Id5001.html Heathkit/Questech]
*[http://www.weathermatrix.net/wxstation/WMR-918/ Huger]
*[http://www.weathermatrix.net/wxstation/WMR-918/ IDT Weather Station info]. Sold by Huger/Oregon Scientific/Radio Shack
*[http://www.lacrossetechnology.com/ LaCrosse]
*[http://www.maximum-inc.com/ Maximum Weathermax]
*[http://www.mtechsystems.com/ MTECH Systems]
*[http://www.oregonscientific.com/ OregonScientific]
*[http://www.peetbros.com/ Peet Bros.]
*[http://www.allweatherinc.com/ Qualimetrics]
*[http://www.radioshack.com Radio Shack]
*[http://www.texas-weather.com Texas Weather Instruments] (One-wire and Serial)

== Radio Direction Finding Equipment (RDF) ==
*Agrelo (discontinued)
*[http://www.byonics.com/dsp-rdf/ DSP-RDF] from Byonics
*[http://www.qsl.net/ve2emm/pic-projects/doppler3/doppler3-e.html Montreal Doppler III]

== Other APRS Hardware ==
* [[AntiTracker]]
* [http://users.rcn.com/carlott/avr_projects.html AVR-based TNC]
* [http://www.linksys.com/servlet/Satellite?c=L_Product_C2&childpagename=US%2FLayout&cid=1115416906769&pagename=Linksys%2FCommon%2FVisitorWrapper Linksys NSLU2] plus [http://www.wetnet.net/ HamSlug] or other alternate firmware
* [http://www.asus.com/products.aspx?l1=12&l2=43&l3=0&model=1121&modelmenu=1 WL-500GP v1] running [http://www.aprs4r.org/cgi-bin/trac.cgi/wiki/WikiStart APRS4r firmware]
* [[SiteAlert]] Remote Site Monitor
* [[SoundCardInterfaces|Sound Card / Radio Interfaces]]
* [[WhereAVR]]
* [[GpsPlot]] Open source B.I.Y.S. - Decodes / displays to a GPS (NEW)
* [http://www.ringolake.com/pic_proj/t_trak/data_trak.html DataTrak] Telemetry firmware for Tiny Trak 3 (NEW)
* [[Telit EZ10 GSM/GPS module]] - [http://www.zs6cey.dyndns.org/ GSM APRS Based Unit with Open-source firmware/software]

== APRS Compatible GPS Units ==
*[[HandHeldGPS|Hand Held GPS]]
*[[VehicleGPS|Vehicle GPS]]
*[[HockeyPuckGPS|GPS without Display]]

== GPS Loggers ==
* [[Kantronics KML-5000]] - [http://www.kantronics.com/products/passivetracker.html Logger aka Passive Tracker]

== Summary of APRS Devices ==
* [http://www.eskimo.com/~archer/aprs_device_capabilities.html APRS Device Capabilities Chart]

[[Category:Hardware| ]]

Yaesu FTM-350R

2010-08-09T16:41:24Z

K0NGA: New page: '''Yaesu FTM-350R''' - VHF/UHF Mobile FM Transceiver with APRS capability == General Features == * Two Separate Receivers with Individual Volume Control * GPS / APRS® / Bluetooth® Featu...

'''Yaesu FTM-350R''' - VHF/UHF Mobile FM Transceiver with APRS capability

== General Features ==
* Two Separate Receivers with Individual Volume Control
* GPS / APRS® / Bluetooth® Features
* 144/430 MHz 50 W FM Dual Band Transceiver (220 MHz 1W in USA Version)

== Links ==
* [http://www.yaesu.com/indexVS.cfm?cmd=DisplayProducts&ProdCatID=106&encProdID=33C814E3D04C92310507ECDE68CC3C01&DivisionID=65&isArchived=0 Official Site Yaesu FTM-350R]

[[Category:Hardware]]

Hardware

2010-08-09T16:28:43Z

K0NGA: /* APRS-capable Transceiver */

== APRS-capable Transceiver ==
* [[Alinco]]
** [[Alinco DR-135]] plus [[T2-135]] S/M [[TNC]] which fits inside Alinco
** [http://www.alinco.com/Products/DR-620/ Alinco DR-620T] (Discontinued)
** [http://www.alinco.com/Products/DR-635/ Alinco DR-635T]
* [[Bionics]]
** [http://www.byonics.com/microtrak/mt-tt4.php Micro-Trak TinyTrak4]
** [http://www.byonics.com/microtrak/mtaio.php Micro-Trak AIO (All In One)]
* [[FC-301/D]] - 5-watt transceiver includes an integrated [[Tracker2]] [[TNC]] board.
* [[Kenwood]]
** [[Kenwood TH-D7A]], [[TH-D7A]](G), [[TH-D7E]]
** [[Kenwood TH-D72]] - [http://www.rigpix.com/kenwood/thd72.htm link]
** [[Kenwood TM-D700]] (Discontinued)
** [[Kenwood TM-D710]]
* [[Yaesu]]
** [[Yaesu VX-8R]]
** [[Yaesu VX-8DR]]
** [[Yaesu VX-8GR]]
** [[Yaesu FTM-350R]] - [http://www.yaesu.com/indexVS.cfm?cmd=DisplayProducts&ProdCatID=106&encProdID=33C814E3D04C92310507ECDE68CC3C01&DivisionID=65&isArchived=0 link]

== TNC, Digipeaters and Modems ==
* [[AEA TNC PK-232MBX]] (see TimeWave)
* [[Alinco EJ-41U]] - original TNC for [[Alinco DR-135]]
* [http://www.byonics.com/microtrak/mt-tt4.php Byonics Portable Digipeater/Tracker]
* [[DRSI DPK-2]]
* [[DRSI DPK-9600]]
* [[Kantronics]]
** [[Kantronics KAM-98]] -- (Discontinued)
** [[Kantronics KAM-XL]]
** [[Kantronics KPC-3]] -- (Discontinued)
** [[Kantronics KPC-3+]] -- Packet Communicator, Full-function TNC/digipeater
** [[Kantronics KPC-9612]] -- (Discontinued)
** [[Kantronics KPC-9612+]] -- Packet Communicator
** [http://www.kantronics.com/products/kwm1200.html Kantronics KWM-1200+ Wireless Modem]
** [http://www.kantronics.com/products/kwm9612.html Kantronics KWM-9612+ Wireless Modem]
** [[Kantronics MT1200]] -- Wireless Modem with optional embedded [[GPS]]
* [[Kenwood RC-D710]]
* [[MFJ]]
** [[MFJ-1270]] -- TNC-2 Packet Controller
** [[MFJ-1276]]
** [[MFJ-1278]]
** [http://mfjenterprises.com/Product.php?productid=MFJ-8621 MFJ-8621]
** [http://mfjenterprises.com/Product.php?productid=MFJ-8621X2 MFJ-8621X2]
* [http://www.usmartdigi.com/ µSmartDigi(tm) Digi and D-STAR Gateway]
* [http://www.paccomm.com/ Paccomm]
* [[PacComm PicoPacket]]
* [[SCS DSP-TNC/TRACKER ROBUST Packet Digipeater/Tracker]][http://www.scs-ptc.com/datasheets/scs_datasheet_tracker_english.pdf]
* [http://www.tapr.org/ TAPR]
* [http://www.timewave.com/ TimeWave]
* [[TinyTrak4]]
* [[TNCX|TNC-X]] -- Kiss-only TNC
* [[Tracker 2]] Kiss-only TNC/digipeater/tracker/anti-tracker (NEW)
* [[USB micro TNC PLUS]]
* [http://www.ir3ip.net/iw3fqg/uidigi.htm UIDIGI] -- Digipeater firmware for TNC2 (and compatible) TNCs

== APRS Trackers ==
* [http://www.aprs.pl/deluxe.htm APRS Deluxe] - ex: FoaPack from SQ2FOA
* [http://www.aprs-navigator.com/ APRS Navigator] (NEW)
* [http://ezkits.illumicon.nl/en/aprstracker.shtml Aprstracker2] (uses PIC16F690)

* [http://www.bigredbee.com/beelinegps.htm BeeLine GPS]
* [[DMATrak]]

* [http://www.foxdelta.com/products/foxtrak.htm FoxTrak] (uses PIC 16F84A)
* [[FreeTrak]] Open source B.I.Y.S.(NEW)
* [http://www.hamhud.net HamHud] Open source heads-up display for APRS (NEW version coming soon)
* [[KF161Tracker|KF161-Tracker]]
* [[KF163Tracker|KF163-Tracker]]
* Micro-Trak
** [[Micro-Trak 200 FA]] - [http://www.byonics.com/microtrak/mt200fa.php a frequency agile 2-meter FM transmitter combined with a TinyTrak 3 controller chip]
** [[Micro-Trak 300]] - Original 300mW Micro-Trak, without the 8 watt amplifier
** [[Micro-Trak 8000]] - [http://www.byonics.com/microtrak/mt8000.php An 8 watt version of the Micro-Trak 300]
** [[Micro-Trak 8000 FA]] - [http://www.byonics.com/microtrak/mt8000fa.php An 8 watt, frequency agile Micro-Trak]
** [[Micro-Trak AIO]] - [http://byonics.com/microtrak/mtaio.php Micro-Trak All-In-One portable Tracker]
** [[Micro-Trak BFT]] - [http://www.byonics.com/microtrak/mtbft.php 35 watt Micro-Trak transmitter]
** [[Micro-Trak TT4]] - [http://www.byonics.com/microtrak/mt-tt4.php TinyTrak4 with a radio transceiver]

* [http://home.wi.rr.com/n9uur/mim.html MIM] and another link: [http://web.usna.navy.mil/~bruninga/mim22.html MIM]
* [[OpenTracker]]
** [[OpenTracker Rev 1]]
** [[OpenTracker Rev 2]]
** [[OpenTracker Rev 3]]
** [[OpenTracker Rev 4]]
** [[OpenTracker+]] aka [[OpenTracker+|OT+]] aka [[OpenTracker+|OT1+]]
** [[OpenTracker1+ SMT]] aka [[OT1+ SMT]] - [[OpenTracker+|OT1+]] w/receive capability

* [http://www.aargang64.dk/aprs/docs/txtrack.html OZ4HZ's Tracker] with 5w transmitter
* [[PocketTracker]] (Discontinued)
* [[RTrak]] - All In One Tracker

* [[MicEncoder|TAPR Mic-Encoder]] (Discontinued)
* [http://www.tapr.org/kits_pic-e.html TAPR Pic-Encoder] (Discontinued)
* [[TinyTrak]]
** [[TinyTrak|TinyTrak 1/2/3/3a]]
** [[TinyTrak3+]]
** [[TinyTrak4]]
** [[TinyTrak4D]] - A [[TinyTrak4]] with a 20x4 display and keyboard port
** [[TinyTrak SMT]]
* [[TigerTrak]]
** [[TigerTrak TM-1]] - [http://www.tigertronics.com/tm1.htm link]
** [[TigerTrak TM-1+]] - [http://www.tigertronics.com/tm1.htm link]
* [[Tracker2]]
** [[Tracker2 model OT2m]] aka [[OpenTracker 2m]] aka [[OT2m]] - [http://groups.yahoo.com/group/tracker2/ link1] or [http://www.argentdata.com/products/tracker2.html link2]
** [[Tracker2 model T2-135]] aka [[T2-135]] - Tracker for [[Alinco DR-135]]
** [[Tracker2 model T2-301]] aka [[T2-301]] aka [[FC-301/D]] - [[Tracker2]] [[TNC]] board includes 5-watt transceiver

* [http://www.navcom.co.nz/zares/zpac.html ZPac] OpenTracker inside Handheld radio's battery pack
* [[SCS DSP-TNC/TRACKER ROBUST Packet Digipeater/Tracker]][http://www.scs-ptc.com/datasheets/scs_datasheet_tracker_english.pdf]

== Weather Sensors ==
*[http://www.aagelectronica.com/ AAG] (One-wire)
*[http://www.columbiaweather.com/WeatherStations.html Columbia Weather Systems] (Capricorn Weather Stations)
*[[DallasSemi|Dallas Semiconductor]] (One-wire)
*[http://www.davis.com Davis]
*[http://www.xpondr.com/041202/flood_advisor.html Flood Advisor]
*[http://www.thunderheadtech.com/Id5001.html Heathkit/Questech]
*[http://www.weathermatrix.net/wxstation/WMR-918/ Huger]
*[http://www.weathermatrix.net/wxstation/WMR-918/ IDT Weather Station info]. Sold by Huger/Oregon Scientific/Radio Shack
*[http://www.lacrossetechnology.com/ LaCrosse]
*[http://www.maximum-inc.com/ Maximum Weathermax]
*[http://www.mtechsystems.com/ MTECH Systems]
*[http://www.oregonscientific.com/ OregonScientific]
*[http://www.peetbros.com/ Peet Bros.]
*[http://www.allweatherinc.com/ Qualimetrics]
*[http://www.radioshack.com Radio Shack]
*[http://www.texas-weather.com Texas Weather Instruments] (One-wire and Serial)

== Radio Direction Finding Equipment (RDF) ==
*Agrelo (discontinued)
*[http://www.byonics.com/dsp-rdf/ DSP-RDF] from Byonics
*[http://www.qsl.net/ve2emm/pic-projects/doppler3/doppler3-e.html Montreal Doppler III]

== Other APRS Hardware ==
* [[AntiTracker]]
* [http://users.rcn.com/carlott/avr_projects.html AVR-based TNC]
* [http://www.linksys.com/servlet/Satellite?c=L_Product_C2&childpagename=US%2FLayout&cid=1115416906769&pagename=Linksys%2FCommon%2FVisitorWrapper Linksys NSLU2] plus [http://www.wetnet.net/ HamSlug] or other alternate firmware
* [http://www.asus.com/products.aspx?l1=12&l2=43&l3=0&model=1121&modelmenu=1 WL-500GP v1] running [http://www.aprs4r.org/cgi-bin/trac.cgi/wiki/WikiStart APRS4r firmware]
* [[SiteAlert]] Remote Site Monitor
* [[SoundCardInterfaces|Sound Card / Radio Interfaces]]
* [[WhereAVR]]
* [[GpsPlot]] Open source B.I.Y.S. - Decodes / displays to a GPS (NEW)
* [http://www.ringolake.com/pic_proj/t_trak/data_trak.html DataTrak] Telemetry firmware for Tiny Trak 3 (NEW)
* [[Telit EZ10 GSM/GPS module]] - [http://www.zs6cey.dyndns.org/ GSM APRS Based Unit with Open-source firmware/software]

== APRS Compatible GPS Units ==
*[[HandHeldGPS|Hand Held GPS]]
*[[VehicleGPS|Vehicle GPS]]
*[[HockeyPuckGPS|GPS without Display]]

== GPS Loggers ==
* [[Kantronics KML-5000]] - [http://www.kantronics.com/products/passivetracker.html Logger aka Passive Tracker]

== Summary of APRS Devices ==
* [http://www.eskimo.com/~archer/aprs_device_capabilities.html APRS Device Capabilities Chart]

[[Category:Hardware| ]]

VoiceAlert

2010-08-09T16:20:11Z

K0NGA:

Voice Alert is quite simply setting your (Kenwood) APRS rig to PL tone squelch 100.0 Hz (for North America) (See notes for PL tone frequancies used in other countries) with the volume turned up to mid range.

This is particularly easy on APRS-enabled rigs (such as the Kenwood [[TH-D7A]](g) handheld, the [[TM-D700]]/[[TM-D710]] mobiles and the Yaesu FTM-350R) since they can mute the speaker with a PL tone squelch while still receiving packets. Other rigs which use the 6 pin mini-din packet connector are also suitable for this mode because they allow the [[TNC]] to connect to the radio ahead of the PL tone decoder. The speaker jack of the radio is not a suitable connection for two reasons:
# The audio will not be heard because a plug is plugged into the speaker jack, and
# the PL tone decoder will prevent the TNC from decoding most packets.

'''''No digipeater should ever transmit a 100.0hz PL tone!'''''

'''''Only stations with a live operator present should transmit a PL tone of 100.0hz'''''

The concept is really simple. If there is an operator present at an aprs station, the radio should transmit a 100.0 Hz PL tone with each packet. Any other Voice Alert APRS station within simplex range will hear the packet and know that they are within range of another station. If one wishes to talk to the other, he simply calls on the APRS frequency using the PL tone. The idea here is to keep it short - just state the person's callsign and ask them to QSY to a voice frequency. Keep in mind that most digipeaters do not stand down for non packet signals, so it is likely that any voice traffic on the aprs frequency will end up doubling with other packets.

What makes Voice Alert so intriguing is that it allows a traveler to conveniently listen for other live stations. Can you imaging calling CQ CQ every minute on 146.52 while traveling? With the voice alert system, your aprs station's normal position beacon becomes a "sonar ping" to other nearby people.

It has also been suggested that if a non-standard PL tone were to be used, it would be like a private voice alert.

Non-standard PL tones have also been used on various digipeaters to verify local coverage areas. The trick here is to put a different PL tone on each of the local digipeaters and tune your PL tone squelch to one of them as you travel around town. You'll hear every packet the digipeater transmits and can assess the signal quality without having to take your eyes off the road.

== No APRS Gear? ==
Tune your 2 meter FM transceiver to 144.390 MHz and configure encode and decode [[CTCSS]] 100 Hz. When APRS stations configured with voice alert are near, their packets will be passed to the radio's speaker, letting you know that someone is in range and probably listening. You won't know their call sign, but give a general CQ, or "calling APRS Voice Alert Stations" on the frequency to make contact, then change to another simplex frequency.

== Note ==
The Voice Alert PL tone use in Australia (VK) is 91.5 Hz