View source for Working with Scanners with Secure Digital (SD) Cards

Welcome to scanners with microSD cards article. This page on [https://en.wikipedia.org/wiki/Secure_Digital Secure Digital] cards from Wikipedia has a great deal of useful information and explanations on the various terms. If a particular tip is specific to a particular model, please be sure to mention that in the description. '''Details Matter''' - the more details you supply, the better this article will become. This article should be a repository for hints, tips, known issues and fixes regarding: use, formatting, loading and other issues that involve scanners utilizing Secure Digitals - microSD cards:

{| border="0" width="60%" align="center"
!GRE
!Radio Shack
!Uniden
!Whistler
|-
|[[PSR-700]]
|[[Pro-18]]
|[[HomePatrol-1|HP-1]]
|[[WS1080]]
|-
|[[PSR-800]]
|[[Pro-107]]
|[[HomePatrol-2|HP-2]]
|WS1088
|-
||
|[[Pro-668]]
|[[BCD436HP]]
|[[WS1095]]
|-
||
||
|[[BCD536HP]]
|WS1098
|-
||
||
|[[SDS100]]
|[[TRX-1]]
|-
||
||
|[[SDS200]]
|[[TRX-2]]
|- 
|}


In addition the following receivers use SD Cards;
* AOR [[DV1]]
* AOR [[DV10]]
* Icom [[IC-R30]]
* Icom [[IC-R8600]]


If you wish to replace your SD card, see the {{Thread|uniden-tech-support|340206-replacement-sd-cards.html|Replacement SD Cards}} 


==General Tips and Information==
; YouTube Video
* [https://www.youtube.com/watch?v=KqF4l3jLeVU&ab_channel=TheScannerGuys SD Cards and What You Need to Know (The Scanner Guys)]


;ALWAYS unmount / eject!
*The computer sees your scanner as a USB memory drive/device. After reading from/writing to the scanner make sure to unmount or "eject" the drive before unplugging it from the computer. Failing to do so can corrupt the card, requiring a reformat and reinstall of the scanner system.


;My microSD Card has failed or I want to replace it with a larger capacity secondary card, or make a back-up card.  What microSD cards are compatible? Generally, How do I format the microSD card for use?


*Some types and/or brands of microSD cards, up to 32GB, are supported. For GRE/RS/Whistler as long as it is formatted correctly:
** 2GB or smaller: FAT16, 32kB clusters
** larger than 2GB: FAT32, 32kB clusters
** SanDisk and Transcend cards from Class 2 to 6 and up to 32 GB are known to work correctly. Some 4 GB PNY cards have worked while others have not. Other brands have been known to cause issues and could not be recognized by the GRE/RS/Whistler PC based OOS.
** Larger capacity memory cards (16-32 GB) have been reported to take longer for the  GRE/RS/Whistler PC based OOS to read, boot up and become operational. 
** The SD association recommends using their SD memory card format tool. They say Windows does not properly format SD cards. Their tool can be found [https://www.sdcard.org/downloads/formatter_4/index.html here]


; How do I reformat my card?
* See the [https://tinyurl.com/2d9jmd85 Uniden Bearcat Home Patrol Scanners - Reformatting the SD card]  video via Bing


; My scanner's keypad is slow to respond to a keypress or key-presses, what should I do.
* Invest in a faster class of microSD card, though a bigger card may not be utilized to it's full potential, the speed of boot may indeed be faster, without the boot speed hit GRE/RS/Whistlers take for bigger cards.


; What may be a cause of the scanner rebooting itself, acting weird or strange?
* MicroSD Cards have a so-called "FAT File Limit"; they're issues related to the amount of files (not size) to be saved, before a larger card is filled: i.e 5Gb of a 16Gb card w/ between 55k and 65k files written. This may cause these scanners to begin to show signs that the data may be corrupt and the scanner reboots itself. See the question above for information on replacing SD cards.

==GRE / RS / Whistler==
;Many of you have questions about Boot/Load times of the GRE/RS/Whistler microSD card scanners
*At boot, the code looks through the entire File Allocation Table, counting “free” clusters. This is necessary so that we know how much free space is available on the card at startup. The number of clusters that must be counted is directly related to the size of the card. As a result, a change in card capacity at a minimum will impact the “Init SD FileSys” time. In addition to card size, the “Verifying Data” time is dependent on the usage of the card and is heavily dependent on file system fragmentation, used space, etc. ''Thanks WhistlerWendy''


==Uniden==
; What is the maximum size SD card supported by these radios?
* See the {{Thread|uniden-tech-support.248|440839-sds200-100-maximum-sd-card-size.html|SDS200-100 Maximum SD Card Size}}


; What do I do about a SD Card File error Use Sentinel Clear User Data message?'''
* See the {{Thread|uniden-tech-support.248|448130-sds-100-message-clear-user-data.html|SDS100 Message Clear User Data}}


; Can I turn off the constant writing to the microSD card? (436 /536)
* Yes, you can. The "Replay" option is what is always writing to the SD card. It is writing continuously so the last received audio (how much depends on your setting) can be replayed. In order to do this, it is constantly recording to the SD card. As of firmware 1.09.02, Uniden added an "Off" option to the list, which disables this feature entirely. The downside - you can't replay missed audio. The upside, is it's not writing to your SD card ALL THE TIME. To turn this off, do the following:
#Click "Menu"
#Scroll to "Settings" and select it.
#Scroll to "Replay Options" and select it.
#Select "Set replay Duration".
#Scroll to "Off" and select it.
#Press "Avoid" to quickly back out of all the Menus. <small>thanks Dsaloman</small>


;Im getting a SD Card Access Error (SDS200). How do I resolve it? 
* See the {{Thread|uniden-scanners|385090-sd-card-access-error.html|SDS200 SD Card Access Error}}



; How can I reduce the chances of a database corruption?
* Always turn off the power switch, wait about 10 seconds then unplug it
* Use recording and the replay options as little as possible
* Periodically reformat the SD card
* I am getting a corruption message.  My favorites are in (French, Spanish, etc.)
** Make sure that the Regional Setting in Windows is set correctly.
* Here is another method to restore your database and the date on the database is the same as the one being downloaded
# Look in C:\ProgramData\Uniden\BCDx36HP_Sentinel\Updater\   (note the ProgramData directory may be hidden. Use ''View'' and make sure ''Show Hidden Files'' is checked
# Remove the GZ file in that folder
# In Sentinel select ''Update --> Update Master Database''.

==Videos==
===Scanner Master===
* [https://www.youtube.com/watch?v=j-JPx_vTU5M&ab_channel=ScannerMaster Reformatting SD Card]








[[Category:GRE Scanners]]
[[Category:Uniden Scanners]]
[[Category:Radio Shack Scanners]]
[[Category:Whistler Scanners]]