The University of Nevada, Reno
Nevada Space Grant
Student
High-Altitude Ballooning

NV SGC
This program is generously supported by the Nevada Space Grant Consortium


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   Garmin 18
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   Garmin PC 25
   Garmin PC 35
   Lassen SQ
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   AvMap G5
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Missions

 

Size: 2.22" (w) x 3.79" (l) x 1.05" (h) (56.4mm x 96.3mm x 26.7mm)

Weight: 3.88 oz. (110 g), not including cable

  • Operating Temperature: -30C to +80C (internal temperature)
  • Storage Temperature: -40C to +80C

Typical current draw: 80 mA @ 12 VDC

 

This is the GPS we used to use on our secondary communication payload.  It's lightweight, waterproof and durable.

There are multiple models of the GPS 35.

We went for the HVS ($189) model because the bare wire ends allow you to solder on what you want (i.e. plugs, power adapters.)

We no longer use it because the Garmin 18 is lighter by almost 50% (the weights claimed by Garmin are not correct).

Pros

Has a built in antenna. So you don't need to include a trailing antenna like you do with the GPS 25 models.

Lightweight because it's just the GPS circuit board and an antenna. No LCD or battery.

Takes anywhere from 3.6-6 VDC unregulated

Cons

Hard to tell if and when it's working because their is no LCD.