Thread: SD Cards for Humminbird

But are you done after you map one lake ? Or do you clear it for the next on. I assume after you upload it to the PC and program. You export to a blank sd card ? I just haven't seen just the card for sale ?

Thanks for all the information. Ill be shopping for SDHC cards tomorrow.

Originally Posted by rnvinc

*HB recommends the Sandisk brand SD Card ...the unit can use SD or SDHC (not SDXC model)...
*SDHC cards up to 32gb can be used in the HB unit...
*SD model cards are made in only Max 2gb ... (And it's unlikely you will even find any)
*Most Card readers (in the PC or thumbdrive type) now days are SDHC...which will read a SD Card or SDHC Card ...
*Older card readers (in the PC or thumbdrive type) are sometimes SD only...meaning that type card reader can read a SD Card ... But cannot read a SDHC Card...
*MMC cards are physically larger that won't even fit in the HB unit card slot ...
*Faster write speed SD Cards can be beneficial when using the unit Snapshot and Recording features ... (Snapshots and recordings are saved directly to the SD Card ... So a faster writing card will allow the processor to get that snapshot and recording data on the card more efficiently)...

*Software updates are usually less than 1mb..

*GPS data (waypoints, routes, tracks) are very small files (I have close to 2800 waypoints backed up in a file size of 265KB...

*Snapshots are usually less than 500KB (the actual .png file snapshot and it's associated .DAT file)...
*Recording file sizes will depend on how many minutes you capture before stopping the recording on the unit....(more bottom coverage means more data to record)...
*A 20 minute recording (and all it's associated files)...is about 200kb...

*I use the SanDisk Extreme III just because I can find them in write speed up to 45mbps...
*Look for sales on smaller SDHC cards 4,8,16gb in faster write speeds of 15, 30, 45mbps...several smaller GB cards are easier for HB file management (and cheaper)...than 1 big GB card with all of the HB files crammed into the card...

I keep a minimum of 6 SD Cards with my unit at all times...
*1 card with all my backed up waypoints..
*1 card with present software version...
*1 card with previous "known stable software version" (in case I don't like the version I'm using presently)..
*1 card with saved Snapshots and Recordings (to playback on the unit for reference)...
*1 blank card for today's Snapshots and Recordings...(if I decide to create either today)..
*1 blank card to back up today's new waypoints created...

You don't have to have this many cards ... But my OCD finds it easier to keep everthing manageable where I know where all my HB data is ...

Rickie

Originally Posted by Gobob

But are you done after you map one lake ? Or do you clear it for the next on. I assume after you upload it to the PC and program. You export to a blank sd card ? I just haven't seen just the card for sale ?

Check your other thread gobob ...

Rickie