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Bjarne Hansen & Barb Peck Freya
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HF Radio, 2013
HF Reception at Sea● Receivers
● SW Radios, Dedicated Receivers● Where to buy● Powering your radio● Tuning: what's this USB, LSB stuff?
● Antennas● Make your own● Antenna Tuners
● Weather FAX● Images available● Station Selection● Schedules
● Computers● Laptops● Marinized PCs
● Weather FAX Software● Exercise in Using
● Special Stuff● Software Defined Radios (SDR)● Software and Hardware of interest to Cruiser
Bjarne Hansen, S/V Freya , VA7ZIG
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HF Radio, 2013
● How to use HAM radio● Getting a HAM license● Info on Cruisers' Nets● Make you an Electrical
Engineer
What this seminar is NOT:
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● Hunter-Vogel 30' full keel
● No Fridge, No Radar, No Watermaker
● Ham/Marine SSB receive only
● Two Solar panels
● Dive Gear
FREYA
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2004 - 2006 16 919 NM
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HF Radio, 2013
Why have an HF RADIO on board?● Weather FAXes● High-seas Weather Forecasts (voice)● Accurate Time
● Celestial Navigation● International News Broadcasts
● Current Events● Sports● Political Situations
● Cruisers' Nets● “Lurking” on your friends and others
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HF Radio, 2013
Shortwave Receiver Laptop
Earphone Out to
Microphone In
Antenna
Typical HF Radio Setup
Optional
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HF Radio, 2013
Receivers● Shortwave Bands (at least 3 to 30 MHz)● SSB (single side band) tuning● Battery-powered, or low-voltage DC input● Headphone output
nice to have...
● External Antenna input● Station Memory● Backlit screen● Alarm Wake-up
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HF Radio, 2013
Sony ICF-SW7600GR
Amazon$165
4x AA or12V -> 6V adapter
wake-up timer
one Amazon reviewer reported it better than a Grundig YB400
Good discussion of various radios by sailors:http://www.cruisersforum.com/forums/f121/weather-fax-si-tex-nav-fax-200-stand-alone-68317.html
Receivers
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HF Radio, 2013
Grundig G3
Radioworld.ca$100
4x AA batteries,or use adapter
wake-up timerAircraft bandBuilt-in battery charger
Receivers
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HF Radio, 2013
DEGEN DE1103
eBay$50
had a good review compared to SCI-TEX Nav-Fax 200 (which costs $500)
Receivers
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HF Radio, 2013
also check out SANGEAN models (the one we tried the night of the seminar seemed to perform well.)
A good website to read reviews of various receivers is:http://www.eham.net/reviews/products/8
!NEW! info added since seminar
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HF Radio, 2013
Receivers – Basic Use● Attach an Antenna
● Whip is OK, long-wire better (more on this later)● Select mode: FM / AM / SSB
● FM = commercial broadcast band (the-Q, KISM)● AM = most international broadcast voice stations● SSB = data, aircraft, station-station voice
● Select a Frequency● http://support.radioshack.com/support_tutorials/communications/swave-5a.htm
● Lower (< 12 MHz) at night, higher during the day● Fine tune for best reception, least interference
● If receiving data, connect radio to computer (more later)● Other controls
● Wide / Narrow filter● DX / Local attenuation● Low / High tone
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HF Radio, 2013
Antennas● Tuned
● Need a different size for each frequency band
● Can be very directional and efficient
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HF Radio, 2013
Antennas● Long Wire
● Can cover multiple bands● Convenient to string up from masthead● Peaks and troughs in the reception are
affected by length and nearby metal.● Avoid runs parallel to metal (e.g. mast)● Common lengths with good frequency
response in ham bands are: 29 35.5 41 58 feet. (There is so much influence by surroundings, that this should not be taken as your final answer. Try it.)
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HF Radio, 2013
Antennas - Construction●
Backstay
Backstay Insulator
Backstay Insulator
inexpensive expensive
Safety Note:
If you will be Transmitting, keep Antenna away from people
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HF Radio, 2013
An Antenna Tuner matches the impedance of the radio to the antenna.● much like the gears on a bicycle: your
legs work best at a medium speed
An antenna tuner reduces the energy reflected back at the radio / antenna connection.
This is essential when Transmitting – reflecting back 30% of 150 Watts can damage the radio and be a hazard to people.
Increased reflection doesn't cause any damage or hazards when receiving. The only downside is a loss of signal strength, but it isn't worth the effort and cost to get an antenna tuner for a receive-only installation.
Antenna Tuners
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HF Radio, 2013
Weather FAX
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HF Radio, 2013
Shortwave ReceiverLaptop with Weatherfax software
Earphone Out to
Microphone In
Antenna
Weather FAX
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HF Radio, 2013
Weather FAX – types of weather chartsSurface Analysis
Current and FutureUpper Air (500 mB)Current and Future
Sea Surface Temperature
Wind & Wave Height
Warning AreasPhotos
Visible and IR
Significant Clouds
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Weather FAX – Surface Analysis
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Weather FAX – Surface Analysis (tropical)
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HF Radio, 2013
Weather FAX – Upper Air (500 mB) Forecast
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Weather FAX – Surface Analysis (forecast)
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HF Radio, 2013
Weather FAX – Wave Period / Direction fcst
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HF Radio, 2013
Weather FAX – Wind / Wave Forecast
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HF Radio, 2013
Weather FAX – Sea State
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Weather FAX – Warning Areas
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HF Radio, 2013
Weather FAX – Sea Surface Temperatures
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HF Radio, 2013
Weather FAX – Significant Cloud Features
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HF Radio, 2013
Shortwave ReceiverLaptop with Weatherfax software
Earphone Out to
Microphone In
Antenna
Weather FAXNote: check radiomanual for the correct phonoplug size. Also - most shortwavebroadcasts are MONO, so a stereoplug is not essential.
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HF Radio, 2013
Software(Windows)
SeaTTY http://www.dxsoft.com/en/products/seatty/ $49 Windows program to receive weather reports, navigational warnings and weather charts transmitted in RTTY, NAVTEX and HF-FAX (WEFAX) modes on longwave and shortwave bands. It can decode GMDSS DSC (HF and VHF) messages.
JWX http://arachnoid.com/JWX/index.html $free A program to receive WeFAX. Java-based, so it will run on Windows and Linux operating systems. Website has a good technical description of WeFAX.
QSSTV http://users.telenet.be/on4qz/ $free Qt-based program to transmit and receive SSTV (slow scan TV) and WeFAX. Needs compiling to install. Tested – seemed that WeFAX portion was unreliable.
JVComm http://www.jvcomm.de/index_e.html $85 Windows program to receive WeFAX and many other types of HAM data transmissions. Good quality, stable.
Airmail's Weather Fax. http://siriuscyber.net/wxfax/ and http://www.siriuscyber.net/ham/
$free for hams and SailMail subscribers. Windows only. WeFAX capability is available as a standalone program called GetFax, or you can just install the whole Airmail program.
Weather Fax 2000 http://store.xaxero.com/cubecart/index.php $89. Windows, Mac OSX, Linux. Can buy Weather Fax 2000 with hardware demodulator for $199, or get software only, which uses soundcard or Pactor modem. Has 30-day trial on software-only version.
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HF Radio, 2013
JWX http://arachnoid.com/JWX/index.html $free A program to receive WeFAX. Java-based, so it will run on Windows and Linux operating systems, and some Mac systems (if Java hasn't been disabled by the OS). Website has a good technical description of WeFAX.
QSSTV http://users.telenet.be/on4qz/ $free Qt-based program to transmit and receive SSTV (slow scan TV) and WeFAX. Needs compiling to install. Tested – seemed that WeFAX portion was unreliable.
MultiMode http://www.blackcatsystems.com/software/multimode/fax.html $89 Macintosh OSX. Website includes good technical description of WeFAX.
Weather Fax 2000 http://store.xaxero.com/cubecart/index.php $89. Windows, Mac OSX, Linux. Can buy Weather Fax 2000 with hardware demodulator for $199, or get software only, which uses soundcard or Pactor modem. Has 30-day trial on software-only version.
Software(Mac OSX)
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HF Radio, 2013
Apps for Apple
WeatherFAX Iphones & iPads.
Uses the microphone to receive audio from your radio (just place the iPhone next to the speaker or headphone)
Don't know how image quality is affected when underway...it can be very noisy when the wind is up.
Software(Mac OSX)
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HF Radio, 2013
JWX http://arachnoid.com/JWX/index.html $free A program to receive WeFAX. Java-based, so it will run on Windows and Linux operating systems, and some Mac systems (if Java hasn't been disabled by the OS). Website has a good technical description of WeFAX.
QSSTV http://users.telenet.be/on4qz/ $free Qt-based program to transmit and receive SSTV (slow scan TV) and WeFAX. Needs compiling to install. Tested – seemed that WeFAX portion was unreliable.
Weather Fax 2000 http://store.xaxero.com/cubecart/index.php $89. Windows, Mac OSX, Linux. Can buy Weather Fax 2000 with hardware demodulator for $199, or get software only, which uses soundcard or Pactor modem. Has 30-day trial on software-only version.
Software(Linux)
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HF Radio, 2013
Software References
http://www.dxzone.com/catalog/Software/Weather_and_FAX/ ● Amateur radio Resources – a listing of WeFAX programs from various sources.
http://yachtpals.com/how-to/weatherfax ● Description of how to prepare cable to connect receiver to computer. The yachtpals.com website is a wealth of other boating info too!
http://www.morganscloud.com/2011/10/27/weather-fax-for-boats/ ● Article about a cruiser's experience with WeatherFax 2000.
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HF Radio, 2013
Tuning Exercise
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HF Radio, 2013
Tuning Exercise
Good audio level. The tuning was varied between the white-on-black section, the gray-gray section, and thepreferred black-on-white section.
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HF Radio, 2013
Tuning Exercise
Good audio level, good fine-tuning of SSB frequency
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HF Radio, 2013
Tuning Exercise
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HF Radio, 2013
Tuning Exercise
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HF Radio, 2013
Worldwide listing:www.nws.noaa.gov/om/marine/rfax.pdf
Local Pacific stations (frequencies in kHz):
KVM70 (Hawaii)9982.5 (0519Z 1556Z)11090 (all)16135 (1719Z 0356Z)
ZKLF (New Zealand)3247.4 (0945Z 1700Z)5807 (all)9459 (all)13550.5 (all)16340.1 (2145Z 0500Z)
NMC (Pt Reyes, CA)4346 (0140Z 1608Z)8682 (all)12786 (all)17151.2 (all)22527 (1840Z 2356Z)
NOJ (Kodiak, AK)2054 (all)4298 (all)8459 (all)12412.5 (all)
WeatherFAX Schedules
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HF Radio, 2013
Typical Schedule
WeatherFAX Schedules
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HF Radio, 2013
Best Frequencies
● They vary throughout the day & night. Try higher frequencies during daylight, lower frequencies at night.
● Program frequencies into radio's memory so you can quickly scroll through list.
● Try a station from the same area in the same band: e.g. WWV / WWVH on 5, 10, and 15 MHz. WWVH (Hawaii) is the female voice; WWV (Colorado) is the male voice.
● Use a propagation program, like the one built into Winlink / Sailmail.
● Usually what worked yesterday will work today around the same time
WeatherFAX Schedules
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HF Radio, 2013
External● Lightning and other Atmospheric noise● Nearby boats● Cities● Aurora
Internal● Power Bricks● Charge Controllers● Alternators● Some LED lights, especially with dimmers
Radio Interference
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HF Radio, 2013
What will you use it for?● email● composing letters, website blogs● watching movies● weatherfax reception● photo storage and editing● chart plotting, route planning● tracking finances, running boat-based business
How Geeky Are You?● do you want Windows, or do you prefer Linux or Mac
OS?● are you comfortable configuring software?● are you comfortable making cables and adapters?
How much money and power do you have?
Computers
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HF Radio, 2013
Marine
Digital YachtaQua50$550
12V @ 1A
2x NMEA01834x USBEthernet12 GB SSD (solid-state drive)
Ubuntu with OpenCPN
Computers
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HF Radio, 2013
Marine
Digital YachtaQua200$1000
12V @ 1.5A
2x NMEA01834x USBVGA, HDMI12 GB SSD (solid-state drive)audio
Windows
Computers
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HF Radio, 2013
Marine
Stealth.comWPC-525F$1700
12V @ 1.2AIP67 waterproof
1x RS-2324x USB2x EthernetVGA128 GB SSDno audio
Windows (+$200) or Linux
Computers
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HF Radio, 2013
Laptops
Lots of choices.
Save $ and power by not getting the latest/greatest.
online, retail, used$200 and up
3x USB1x EthernetVGA, HDMIWiFi
Computers
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HF Radio, 2013
+ -
12 V
120 V
18 V
Each conversion between differentvoltages is perhaps 85% efficient.
Avoid converting your 12 VDC 115 VAC 18 VDC For each Amp your laptop draws, your battery needs to supply at least 1.3 Amps
X
Computers
Saving Power – Avoid Conversions!
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HF Radio, 2013
Furuno FAX-408
$2500 newused: check eBay
Paper refills $20
Dedicated Receivers/Printers
Other Interesting Stuff...
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HF Radio, 2013
Dedicated Receivers/Printers
Furuno FAX-30
$1000 newused: check eBay
No paperConnects to PC or Furuno NavNet display via ethernet cable
Other Interesting Stuff...
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HF Radio, 2013
Dedicated Receivers/PrintersXaXero WeatherFAX 2000
$200
$99 if used with Pactor Modem
Demodulates the audio in hardware (no sound input on PC needed)
Sends data to PC using USB
can auto-tune some Ham/SSB radios
Other Interesting Stuff...
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HF Radio, 2013
Dedicated Receivers/PrintersXaXero SkyEye
$2000
Windows/Mac/Linux
Tunes actual NOAA weather satellite transmissions, demodulates, and sends sat photo to PC.
Free to receive – no subscription needed.
Other Interesting Stuff...
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HF Radio, 2013
Dedicated Receivers/PrintersXaXero SkyEye – How does it work?
NOAA GOES satellites transmit data on 1691 and 1685.7 MHz. The NOAA polar orbiters use frequencies in the 137-138 and 1698-1707 MHz bands.
Software provides: ● Vessel position● GRIB overlay (needs
GRIB file)● Satellite tracking● Lat/long and coastline
overlay● Image enhancement
Other Interesting Stuff...
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HF Radio, 2013
Software Defined Radio
Other Interesting Stuff...
http://www.oz9aec.net/index.php/gnu-radio/gnu-radio-blog/477-noaa-apt-reception-with-gqrx-and-rtlsdrhttp://sdr.osmocom.org/trac/wiki/rtl-sdr Info on the rtlsdrhttp://noaasis.noaa.gov/NOAASIS/ml/satservices.html Info on satellite services
What is it?
A Digital TV Receiving Dongle, which has been re-programmed to tune anywhere between approx 30 MHz to 2200 MHz. The raw signals are sent to the PC via USB, and software on the PC demodulates the desired signal. The wide frequency range allows reception of many satellite, aircraft, and ship (VHF) transmissions. All you add is an antenna.
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HF Radio, 2013
Apps for Apple
iStuff generally doesn't have the usual electrical connectors useful for marine use, sporting instead a proprietary docking connector. However, there are some workable, even clever, solutions.
The docking connector does include two pins for serial communications, and with a cable and level converter (Redpark RS-232 from Get-console.com), can be connected to RS-232 ports. Software to take advantage of the serial port may require that your iDevice be jailbroken. Google can tell you more...
The Wi-Fi interface is another way of getting around the lack of physical connectors.
Other Interesting Stuff...
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HF Radio, 2013
AIS to smartphone / pad via WiFi
Many AIS apps for portable devices. Note that for AIS operation in areas without cell coverage, you must have an AIS receiver.
Here's a receiver that sends the AIS data to your portable device via WiFi.
Digital YachtZDIGIAIS$470
Other Interesting Stuff...
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HF Radio, 2013
Apps for Apple
A Shortwave station schedule
Other Interesting Stuff...
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HF Radio, 2013
Apps for Apple
Charting
Overall good, butnot all areas covered, Battery drain high,Chart inaccuracies
Read reviews in App Store...
Other Interesting Stuff...
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Water and Electricity Do Mix
Thanks !