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Posts: 117
| Not sure I follow exactly how you are using the sd card--you can make sonar recordings onto an SD card, this is reallyhelpful for learning how to use the unit among other things. You can also use a recording with birds sonarchart program to create a map of a lake. However, I'm not aware of any need to make a recording for different lakes and store it on the card. Knowing how you'll use it may help someone to recommend a card. I use an 8gig SD card on my humminbirds, I've never made recordings but as an example right now I have the latest software update and about a dozen screenshots on it and it's using a tiny % of the space available--8gigs is a huge amount of data and that's a fairly small SD card by todays standards. If you fill it you can store anything you want to keep on a computer too as long as your PC will either take the SD card or you have a USB/SD adaptor. I don't think (?) there's any reason to NOT use a larger capacity card, but it might actually be nicer to get a couple smaller capacity cards just for ease of use if you'll be putting images or recordings on a PC, that way you can make sure to always have an empty card in your unit.
Not exactly the answer to your question, but hopefully it helps.
Edited by Macintosh 7/17/2015 4:06 PM
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