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PDA/GPS and PNA Systems
PDA: Personal Digital Assistant (Pocket PCs and Palm devices)
PNA: Personal Navigation Assistant (sometimes referred to as a PND: Personal Navigation Device)

This page includes an overview of soaring PDA/GPS systems, and example systems.

Introduction
PDA/GPS systems (PDA stands for Personal Digital Assistant)  and PNA systems (PNA stands for Personal Navigation Assistant) are a great first step to a complete soaring flight computer system.  They offer excellent moving maps and final glide information.  They even automatically calculate wind speed and direction while you thermal.  It is awesome to be able to glance at the moving map display and see reachable airports highlighted on the screen.  That is powerful information at your fingertips.  I often say that the systems below offer 90% of the functions of the high cost systems.  A PDA/GPS System consists of a Pocket PC or Palm computer and a "Generic GPS" or a PNA with a built-in GPS.  The term "Generic GPS" means a GPS that is designed for general purpose use - not necessarily aviation.  Generic GPS units include devices such as Garmin GPS units, CF Card GPS units, etc.  There are hundreds of GPS brands and types.  The good news is that most GPS units follow the NMEA 0183 data standard which means that they send position and GPS altitude data out their serial port for use by other devices. 

Related Pages

Improved Safety
Pilots that have never flown with a PDA/GPS system think that they will decrease safety because the pilot will be staring at the PDA rather than keeping their eyes out of the cockpit.  It is my opinion that PDA/GPS systems greatly improve safety because the pilot can glance at the display and know instantly whether he/she is within gliding distance of nearby airports.  All soaring flight software available can highlight reachable airports on the moving map.

What PDA/GPS Systems Can Do What PDA/GPS Systems Can't Do
  • Use GPS position and altitude
  • Moving map with waypoints and SUA
  • Final glide calculations
  • Reachable airports highlighted on map
  • Record unofficial IGC flight logs (can't be used for badges or records)
  • Tasks
  • Portable (suction cup mount)
  • No cables (depending on GPS)
  • Flight Statistics
  • GPS altitude used for final glide (not best)
  • Improved safety through quick access to final glide data
  • Wind speed and direction calculated using drift while circling
  • Upgradeable - They can be used with a "Generic GPS" for a low cost
    solution and then used with an IGC approved logger or high end flight
    computer when you can afford one.
  • 90% of what the high cost systems can do
  • Low cost (when compared with $4000 flight computer systems)
  • No Pressure Altitude Data (Pressure altitude is generally preferred for final glide calculations.)
  • Can't record IGC approved flight logs for badges and records
  • No Vario or averager (Actually, SeeYou Mobile can use GPS altitude to display a slow variometer value and vario average.)
  • No Speed-to-fly director
  • Can’t calculate wind speed and direction using airspeed and GPS data while cruising
  • When used with a speed-to-fly vario you must enter MacCready into both devices
  • The color displays on all Pocket PCs are not as readable in sunlight as you would hope.

Example Systems
Below are a few example systems.  I've tried to pull together all the components you need for a complete system.

How to Acquire These Example Systems
Not all the parts listed on this page are available from Cumulus Soaring, Inc.  I don't sell Pocket PCs because they change too rapidly so Pocket PCs and accessories are available through alliances with PC Connection.  In order to purchase all the parts in some of the systems below, you would need to place two orders - one with Cumulus Soaring, Inc., and one with PC Connection.  I can buy them for international customers if you are also buying other parts from me.


Cool Product
The Socket Mobile Power Pack is an awesome accessory for any soaring pilot PDA user.  It is a 5V Lithium Ion battery pack that measures only 102 x 76 x 25 mm (4" x 3" x 1") and yet it is rated at 7.2 Ah.  It fits nicely in to the side pocket of most any glider and provides 24 hours of power for your PDA.  You can keep it connected throughout the flight or just plug it in if the PDAs battery gets low.  I used to recommend only PDAs that have optional large batteries but this product makes it possible to use any Pocket PC.  It sells for $109.  You can see details on the Socket page.


Naviter Oudie PNA - The Ultimate Portable System
The Oudie is a PNA that is nearly perfect for use in gliders.  Many current model PDAs and PNAs suffer from some "gotcha" issue such as the lack of a serial port, or low resolution, screen too small or too large, etc.  The Oudie is the perfect size for use in a glider and offers a built-in GPS and built-in RS-232 serial port - so it can talk to soaring flight computers and flight recorders.  The 5" diagonal screen is a little larger than a PDA, but the overall footprint is much smaller than the existing "high end" soaring navigation displays. Testing has shown that the Oudie is significantly brighter than an iPAQ 310 (which is brighter than most PDAs).  It is not as bright and does not offer the same screen resolution as the NK ClearNav, but it has a much smaller footprint and costs much less.  The screen resolution is 480 x 272 pixels.  That is more than an iPAQ h3900, the same as the Bendix King AV8OR and less than iPAQ 310 or ClearNav.  I have played with an Oudie I was very satisfied with its screen resolution.  The $628 price is very reasonable considering it includes a built-in GPS, suction cup mount, power/data cable with built-in 12V to 5V power converter and a license for SeeYou Mobile that is tied to the Oudie.  I predict that the Oudie (with its built-in GPS) will be popular both for pilots looking for a portable system in club and rental gliders, and pilots looking for a semi-portable mounted system wired into a glider's electrical system and connected to a soaring GPS or flight computer

External Power
I imagine that the internal battery will power the unit for only an hour or 2.  Therefore it will probably be necessary to power the unit either with an external portable battery such as the Socket Mobile Power Pack, or to power it with 12V using its supplied 12V to 5V power converter.  The Oudie works great with the Socket Mobile Power Pack and that standard USB to mini-USB cable (included with the Oudie) can be used to connect them together.  My 5 year old Socket Mobile Power Pack powered the Oudie for just under 12 hours.

Mounting Options
The unit includes a suction cup mount designed for use in a car.  Since it has a mechanism for pulling a strong suction (ideal for use on a glass window in a car) it may or may not be idea for use on an expensive and flexible glider canopy.  I don't recommend using similar devices in gliders because they "dimple" the canopy when in use and may cause crazing over time.  Several mounting options are shown below.

Example System with Naviter Oudie
Naviter Oudie
System
Naviter Oudie  SeeYou Mobile
Soaring Flight
Software
(included in the
price of the Oudie)
Oudie Cradle
with
Oudie Cradle Modification
(included in box with Oudie)
RAM-B-SCMK-RAP-B-201-RAP-B-238
RAM suction cup mount
Socket Mobile Power Pack
The cable used to connect to the Oudie
is included in the box with the Oudie. 

Total: $749.85

Optional
If you want to mount this PNA more permanently, I recommend the Oudie Cradle with Oudie Cradle Modification with a GNeck2-Assy-Panel or GNeck2-Assy-Side gooseneck system, or a RAP-B-Arm-Std-PlBase B-size mounting arm.
with or or


iPAQ hx4705 with Transplant CFGPS

Portable System with large screen and large battery - For Soaring Club Members
This system is designed for quick installation in any glider.  Just attach the suction cup mount to the canopy of the glider and go soaring. It's perfect for club members who want a GPS, graphical moving map with airports and SUAs, differential final glide, reachable airports highlighted, and "unofficial" IGC flight logger that can be used in any glider.  The large 4" screen is the largest available on a Pocket PC - most are 3.5" or 3.8".   In my informal test this large battery powered the 4705 with the backlight on full power and a
Transplant Primum CFGPS GPS for just over 6 hours. This Pocket PC also offers a high resolution screen.  Most Pocket PCs have a screen resolution of 240 x 320 pixels.  This one has a resolution of 480 x 640 pixels.  That doesn't make a major difference in the amount of data that can be displayed because the text has to be large enough to read in the cockpit.  However, it does make the text more sharp and the maps more detailed.  pocket*StrePla and SeeYou Mobile look very nice on the high resolution display.  There are no cables or electrical connections to make to the Pocket PC or GPS.  The iPAQ hx4705 has a serial data port so it can be connected to an external GPS or flight logger using the I38C-x cable.  If you need more battery power you can use the Socket Mobile Power Pack shown below. 

Note: The iPAQ hx4705 is no longer available as new.  Used units are available on ebay and Amazon.com.

Example System with iPAQ hx4705 Pocket PC and Transplant CF GPS
Soaring Flight
Software
hp iPAQ hx4705 Holux GR-271
CF GPS
Nimbus Cradle
with USB "A" connector option
for plugging directly into the
Socket Mobile Power Pack
RAM-B-SCMK-RAP-B-201-RAM-B-238 Socket Mobile Power Pack 

Total: $787.85


iPAQ 210, 211 or 214 with CF GPS

Portable System with large screen - For Soaring Club Members
This system is designed for quick installation in any glider.  Just attach the suction cup mount to the canopy of the glider and go soaring. It's perfect for club members who want a GPS, graphical moving map with airports and airspace, differential final glide, reachable airports highlighted, and "unofficial" IGC flight logger that can be used in any glider.  The large 4" screen is the largest available on a Pocket PC (but smaller than the screen on the iPAQ 310 PND - see below).   This Pocket PC also offers a high resolution screen.  Most Pocket PCs have a screen resolution of 240 x 320 pixels.  This one has a resolution of 480 x 640 pixels.  That doesn't make a major difference in the amount of data that can be displayed because the text has to be large enough to read in the cockpit.  However, it does make the text more sharp and the maps more detailed.  pocket*StrePla and SeeYou Mobile look very nice on the high resolution display.  The built-in battery will power the PDA and CF GPS for only a few hours, so you'll want to include the Socket Mobile Power Pack to power the system. 

Note: The iPAQ 210 does not have a built-in RS-232 serial port, so you will need a Socket Ruggedized Serial I/O CF Card to connect it to a soaring GPS.  A special version of the Nimbus cradle is available to allow an iPAQ 210 to be connected to a Cambridge 302, Goddard PS-5a power converter, etc.

Example System with iPAQ 210, 211 or 214 Pocket PC and Transplant CF GPS
 
Soaring Flight
Software
hp iPAQ 210, 211 or 214 Holux GR-271
CF GPS
Nimbus Cradle
with USB "A" connector option
for plugging directly into the
Socket Mobile Power Pack
RAM-B-SCMK-RAP-B-201-RAM-B-238
suction cup mount
Socket Mobile Power Pack

Total: $737.85


iPAQ 310 (USA), 312, 314, 316 or 318 PNA (Personal Navigation Assistant)

Portable System with built-in GPS and large, high-resolution screen
This system is designed for quick installation in any glider.  Just attach the suction cup mount to the canopy of the glider and go soaring. It's perfect for soaring club members or those who rent gliders who want a GPS, graphical moving map with airports and airspace, differential final glide, reachable airports highlighted, and "unofficial" IGC flight logger that can be used in any glider.  The large 4.3" screen is the largest available in a portable PDA or PNA.   This PNA also offers a high resolution (800x480 pixel) screen.  Most Pocket PCs have a screen resolution of 240 x 320 pixels.  So far SeeYou Mobile is the only soaring software that supports this device.  The unit's internal battery will power the unit with the backlight on full power and the GPS running for just over 2 hours.  I therefore recommend powering it with external power.  The Socket Mobile Power Pack works great with it, but only if you use the special Cable-USBA-mini-USB-Pwr-1 power cable.  A standard USB cable did not seem to allow the Socket Mobile Power Pack to charge the iPAQ 310 - it was indicating that it was receiving external power, but the battery level was slowly decreasing because the unit was not switched to high current charge mode.  The Cable-USBA-mini-USB-Pwr-1 solves that problem.  The Socket Mobile Power Pack is able to power the iPAQ 310 for about 9 hours and 15 minutes.  During the test the iPAQ 310's backlight was at full brightness and the built-in GPS was working.  The test was done with my 3 year old Socket Mobile Power Pack.  A new unit would probably last even longer.

Note: The iPAQ 300 series does have a built-in serial port capability.  However, it is somewhat limited.  It requires a serial voltage level converter, and it works only at 9600 baud or higher.  Therefore it can't be used with a Cambridge 302 or Volkslogger or ILEC SN10.  But it should work great with an EW microRecorder or LX Navigation Colibri.  The K6 Bt BlueTooth Adapter makes it possible to talk to just about any soaring instrument over BlueTooth.  But a cable solution is preferable if possible.

Example System with iPAQ 310
Assembled System SeeYou Mobile
Soaring Flight
Software
hp iPAQ 300 Series (310/312/314/316/318)
Travel Companion
Personal Navigation Device (PND)
Cable-USBA-mini-USB-Pwr-1 Socket Mobile Power Pack RAM-HOL-PD2 with
RAM-B-SCMK-RAP-B-201-RAP-B-238

Total: $759.80

Optional
If you want to mount this PND more permanently, I recommend the RAM-HOL-PD2 cradle with a GNeck2-Assy-Panel or GNeck2-Assy-Side gooseneck system, or a RAM B-size mounting arm.
with or or


Bendix King AV8OR PNA (Personal Navigation Assistant) - The Ultimate Portable System?

Portable System with built-in GPS and large, medium-resolution screen
This system is designed for quick installation in any glider.  Just attach the suction cup mount to the canopy of the glider and go soaring. It's perfect for soaring club members or those who rent gliders who want a GPS, graphical moving map with airports and airspace, differential final glide, reachable airports highlighted, and "unofficial" IGC flight logger that can be used in any glider.  The large 4.3" screen is very nice.   This PNA offers a medium screen resolution (480x272 pixel) screen.  Most Pocket PCs have a screen resolution of 240 x 320 pixels.  The iPAQ 310 has a 800 x 480 pixels - which is much higher.  The screen resolution of the AV8OR is even less than my iPAQ hx4700 (640 x 480 pixels).  However, I thought the screen looked good (better than most PDAs) and I really didn't find the "medium" screen resolution to be a problem.  The screen is the noticeably brighter than my iPAQ 310 and all PDAs I have compared it to.  So far SeeYou Mobile is the only soaring software that supports this device.  The unit's internal 800 mAh battery will power the unit with the backlight on full power and the GPS running for just over 1.5 hours.  A 1600 mAh battery is also available as an option and will power the unit for about 3 hours.  Since that is not really long enough for the most soaring flights (plus the time before and after the flight) I recommend powering it with external power.  The Socket Mobile Power Pack works great with it.  I tested it using my 3 year old Socket Mobile Power Pack and a standard USB to mini-USB cable and it ran for over 10 hours.  The first "Battery Low" warning happened at about 10 hours.  At that time I believe the Socket Mobile Power Pack was dead and the unit's main battery was draining fast.  It is rumored that it can also be powered by a Cambridge 302 or LX1600.

Unlike the iPAQ 310, this device does have a built-in serial port (through the mini-USB connector).  The iPAQ 310 has a serial port, that works at 9600 baud and higher baud rates, with the use of an serial voltage level converter. The AV8OR does not need the voltage level converter and works great at any baud rate.  That means that it will work great with all soaring GPS flight recorders and flight computers.

The price ($650 to $799) is quite a bit higher than the iPAQ 310 ($249), but it does have an RS-232 serial port and built-in general aviation moving map software.  I also offers the brightest screen I've seen in a PDA or PNA and can connect to a Socket Mobile Power Pack using a standard USB cable (the iPAQ 310 needs a custom cable).  I don't currently sell this product.

Example System with Bendix King AV8OR
SeeYou Mobile
Soaring Flight
Software
Bendix King
AV8OR
Socket Mobile Power Pack RAM-HOL-PD2 with
RAM-B-SCMK-RAP-B-201-RAP-B-238

Total: $1149.80

Optional
If you want to mount this PND more permanently, I recommend the RAM-HOL-PD2 cradle with a GNeck2-Assy-Panel or GNeck2-Assy-Side gooseneck system, or a RAM B-size mounting arm.
with or or


Paul E. Remde

8661 Connelly Place
Savage, Minnesota 55378
USA


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