APRS In Your Pocket on the trail
The 2015 May edition of QST features my article on using your android powered phone as part of a tiny full-featured APRS station that includes your favorite HT paired with a tiny packet TNC.
In this photo I am using my Blackberry Z30 (it runs Android apps) running APRSDroid, and communicating via Bluetooth with the UV-3R/Mobilink TNC attached to my pack and being charged by the solar panel.
Because the station is controlled from my phone via Bluetooth, the UV-3R/Mobilinkd TNC remains attached to my pack as shown.
This also locates the UV-3R with its antenna in the optimum operating position for communicating with the digipeater mounted in my mobile.
This very compact APRS station does keyboard messaging, mapping, logging, individual station tracking, the works, and all via RF.
The Blackberry Z30 provides the GPS information required for the TNC, so it makes for a nice tidy cable free package.
In this photo I am running offline open-street-maps loaded on the SD card of my phone, as I am not able to connect to the cell network on this day due to the very deep valley that I am hiking in.
The APRS ADS-WS1 weather station mounted in the cargo bay of my mobile, along with its companion OT3m Tracker 3 becomes part of the solution in this case, as the OT3m has on-board digipeater capability.
With the digipeater enabled I am able to readly have the packets from my APRS In Your Pocket station forwarded to the APRS Network.
If I require the need of the digipeater and the digipeater is shut off, I can enable the digipeater of the OT3m by sending it an APRS message from my BB Z30 via the Mobilinkd TNC/UV-3R commanding the digi on.
If you look close at my pack, you can see the charging cables routed between the solar panel and the UV-3R/Mobilinkd tnc.
This solar panel is capable of charging both devices simultaneously while on the trail.
Lashed on the other side of my pack is my take-down yagi that nicely increases the range of my HT's as required.
Here is information on operating the APRS In Your Pocket station without being connected to cell service with your phone.....
Click on the photo for a closer look.....