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Post by dayhiker on Sept 11, 2019 16:30:16 GMT -8
I forgot to mention my iPhone is a 6, so not a larger screen or battery:
The iPhone 6 is powered by an 1,810mAh non-removable battery. so 13000 / 1810 = 7x but I think it isn't able to transfer all that charge or at least one would have to use a partially charged phone and then charge it partially again,
I think it charges my old iPad mini 2 1.5 times, but does not charge my sisters iPad even one time.
EDIT
iPhone XS: 2,658 mAh
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toejam
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Post by toejam on Sept 12, 2019 19:32:52 GMT -8
I've downloaded Avenza a couple of times but got rid of it because you have to find and load files of all the maps yourself. Other than that, it's easy to use. I'm on the fence about which apps I like - can't figure out how to have high-resolution maps & satellite images, import gpx files, and record tracks on a singe app. Probably need the pro version of something rather than the free download.
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driftwoody
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Post by driftwoody on Sept 14, 2019 3:21:05 GMT -8
I use my android phone in airplane mode with the Gaia app. Battery life hasn't been a problem, but I'm never out for more than 3-4 days.
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ErnieW
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Post by ErnieW on Sept 14, 2019 4:13:44 GMT -8
One thing I found about Avenza that might be a little confusing particularly if you use one account on multiple devices is there are two parts to getting maps. First is downloading into you account. The other part is downloading on to the devices. On the device you download from the store into your account it also puts it on that device. On other devices you will have to go into your maps and pull it to that device.
You can remove maps from your device and they will still be in your account. This allows for you to have a large library in your account but only the maps you want, for both size and organization reasons, on a given device.
I plan on my pad at home but take my phone with me.
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tigger
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Post by tigger on Sept 14, 2019 5:11:49 GMT -8
You can remove maps from your device and they will still be in your account. This allows for you to have a large library in your account but only the maps you want, for both size and organization reasons, on a given device. How much space do the maps take up? I would be surprised if you couldn't store half the U.S. on a phone at Quad detail.
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ErnieW
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Post by ErnieW on Sept 14, 2019 5:29:52 GMT -8
How much space do the maps take up? I would be surprised if you couldn't store half the U.S. on a phone at Quad detail. This is a good question. They are not vector maps like on most built in GPS maps. I believe they contain a lot of bitmap info. A USGS quad is about 20Mb and the Harriman map set is 140Mb. So a large library could get hefty. One of the common complains about Avena is that when you get to the edge of one map you have to know what map to call up next. Due to the varied nature of the map sources it cannot do that automatically for you. Since you need to do this is might be best to have only the maps for the hiking area on your phone for that trip to make this easier.
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Post by k9education on Sept 19, 2019 17:09:04 GMT -8
I use my iPhone with Gaia almost exclusively and have for years. I make sure I download all of the maps I could potentially need (including ones in nearby areas in case I get off course by choice or by mistake) for offline usage before i head out. I carry a small battery pack good for about 3 full charges. If I'm really headed deep into the wilderness though, I do sometimes carry a dedicated GPS (an old Garmin 60CSX I think) as it is able to track my position much better than my phone.
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almostthere
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Post by almostthere on Oct 8, 2019 8:21:57 GMT -8
I use a map for real navigation tasks.
The InReach is a backup to the high band radios our crew is issued. A tower went out, resulting in bad reception. If I don't bother using it except when needed to text someone or 911, the battery lasts the duration of the trip. My phone is my camera, I have an Anker that weighs about 10 oz and charges both phone and InReach in the event a cold night zaps the battery or the trip is more than a couple days long. It's also bailed out other people when their device is in need of power.
I spent too many hours in SAR trainings and missions to trust a GPS fully. We spent a lot of time learning how to double check what the GPS said, and I value my time and energy more than to follow one blindly. We used GPS to document our movements, more than anything else.
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Post by ukpacker on Oct 8, 2019 11:45:11 GMT -8
It is probably not relevant to most of you but in Norway where I was backpacking during the summer the Russians jammed GPS signals in the east of the country during a NATO exercise, so something to bare in mind it can happen.
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ErnieW
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Post by ErnieW on Oct 8, 2019 13:22:45 GMT -8
Maybe need to carry a sextant?
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rangewalker
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Post by rangewalker on Oct 8, 2019 18:56:06 GMT -8
Russians jammed GPS signals in the east of the country during a NATO exercise USAF used to prank oil and gas exploration crew radios in North Dakota and Montana during training flights with extreme low level flights.(1980's) A combination of jamming and high RF disruption. And audible giggles. It was dangerous though too as we were handling explosives and triggering the timed blasts through radio tones.
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almostthere
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Post by almostthere on Oct 8, 2019 20:04:41 GMT -8
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almostthere
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Post by almostthere on Oct 8, 2019 20:08:47 GMT -8
Maybe need to carry a sextant?
Too heavy, and the mirror on my orienteering compass helps me keep a clean shave. Multi use wins every time.
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Post by ukpacker on Oct 8, 2019 23:02:38 GMT -8
Russians jammed GPS signals in the east of the country during a NATO exercise USAF used to prank oil and gas exploration crew radios in North Dakota and Montana during training flights with extreme low level flights.(1980's) A combination of jamming and high RF disruption. And audible giggles. It was dangerous though too as we were handling explosives and triggering the timed blasts through radio tones. Just how old were these pilots? In the UK the army allows access to areas of their training lands where no live fire takes place,last year I noticed when walking through such an area that the location service on my Android phone was not working, but then maybe the phone was having one of its moments, no way of knowing did not seem appropriate to walk over to the guard house and ask if they were jamming the signal on that day!
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Westy
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Post by Westy on Oct 9, 2019 6:24:29 GMT -8
Still use maps and in areas I am familiar with, no navigation aids at all. On CT (Colorado Trail) Thru-hike in '15 used an Oregon 600 GPS for navigation with purchased waypoints. Three years later on the CDT used Guthooks and Ley Maps from Avenza on iPhone SE. Since then, just for fun have loaded All Trails. On the AZT last year went strictly Guthooks no maps. Where Guthooks is available, it is most excellent, especially since current beta can be added and updated in real-time on trail by users. Thus, to answer your question. GPS is retired to a desk drawer. As for iPhone SE. Recently section hiked the CDT in Glacier NP. Was on trail 7-8 nights. Using Guthooks and listening to music 4+ hours each day only consumed 20% to 40% of battery. Only recharged SE a couple of times. My standard electronics kit consists of: - iPhone SE w/128 gb
- DeLorme InReach SE PLC
- Petzel Tikka Head Torch w/Core rechargeable battery
- Anker PowerCore 10000
- Anker PowerPort 2
- Anker PowerLine+ 1' Lightning Cable (Red) Double Braided
- Anker PowerLine+ 1' Micro USB Cable (Golden) Braided
If doing multi-day off trail route, it's maps and perhaps a few relevant Pdf notes downloaded on iPhone.
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