• Effective immediately we will be deleting, without notice, any negative threads or posts that deal with the use of encryption and streaming of scanner audio.

    We've noticed a huge increase in rants and negative posts that revolve around agencies going to encryption due to the broadcasting of scanner audio on the internet. It's now worn out and continues to be the same recycled rants. These rants hijack the threads and derail the conversation. They no longer have a place anywhere on this forum other than in the designated threads in the Rants forum in the Tavern.

    If you violate these guidelines your post will be deleted without notice and an infraction will be issued. We are not against discussion of this issue. You just need to do it in the right place. For example:
    https://forums.radioreference.com/rants/224104-official-thread-live-audio-feeds-scanners-wait-encryption.html

Replacement SD Cards

Status
Not open for further replies.

UPMan

Uniden Representative
Premium Subscriber
Joined
Apr 19, 2004
Messages
13,287
Location
Arlington, TX
#1
We will be switching our production from using 8GB TLC type SD cards to 4GB MLC type SD cards (we actually originally provided 4GB TLC cards then did an unadvertised change to 8GB).

All devices will eventually wear out an SD card (if it does any writing at all). I typically have to replace my dashcam's 2 cards every 3 months or so. It is just the nature of the SD technology.

The benefit of MLC, and what makes it worth us changing even though it will be at a lower (but still the advertised) capacity, is that MLC NAND memory has a tremendously longer life. It is recommended for use in dashcams, security video cams, and other devices that do intense data writing. They advertise up to 12,000 hours of continuous video writing before failure (in 64GB cards).

So, when you go to replace your card, we are now highly recommending you get an MLC type card. They are typically advertised as "industrial" or "high endurance." Here is an example of one on Amazon: https://www.amazon.com/Transcend-In...F8&qid=1474011547&sr=8-1&keywords=mlc+sd+card

For the capacity, the price isn't unreasonable, either.
 

DSC45

Member
Premium Subscriber
Joined
Jul 24, 2009
Messages
691
Location
Central Jersey
#2
Lucky with original SD cards

I have the original 4gb Micro SD Cards in my three 536HP's. Lucky, I guess! One of my scanners was purchased on the original offering. I know many of the forum members have had there share of bad luck with their sd cards.

I can't explain why, but I can tell you I don't use the record option on my scanners, as a matter of fact I have turned that option off since available. I also connect the scanners to surge protectors. I've read on the forum that some contribute sd card failure to the recording option.
 

bee

Member
Premium Subscriber
Joined
Jan 5, 2003
Messages
1,049
Location
Belmont, Ms.
#3
I have had my "HP 1" 5 years with no problems. My "HP 2" 2 years with no problems

What causes the SD card, failure?
 
Joined
Jun 20, 2007
Messages
4,112
Location
Anne Arundel County, MD
#4
I have the original 4gb Micro SD Cards in my three 536HP's. Lucky, I guess! One of my scanners was purchased on the original offering. I know many of the forum members have had there share of bad luck with their sd cards.

I can't explain why, but I can tell you I don't use the record option on my scanners, as a matter of fact I have turned that option off since available. I also connect the scanners to surge protectors. I've read on the forum that some contribute sd card failure to the recording option.
The replay option is the same as recording. It continuously records the last x seconds of activity in a loop. Same or worse impact to the card.

Mark
WS1095/536/436/996P2/HP1e/HP2e/996XT/325P2/396XT/PRO668/PSR800/PRO652
 

Jay911

Member
Premium Subscriber
Joined
Feb 15, 2002
Messages
9,114
Location
Bragg Creek, Alberta
#7
Any time the scanner is writing to the card. If you tell it to save a found CTCSS/DCS/NAC/CC, if you shut the scanner down (and it writes the scanner status to the card), if you are receiving a signal and either instant-playback or long-term recording is enabled, etc.
 

troymail

Silent Key
Joined
Dec 19, 2002
Messages
9,977
Location
Supply (Lockwood Inlet area), NC
#8
Cards can also fail from time to time if the radio isn't powered down properly and/or release properly from your PC. Some have also suggested that simply removing and re-inserting the card frequently will also affect the life of the card.

I can't say if that's true but I can say that I record all of the time, usually remove the card(s) from radios to transfer to my PC, and update programming and library data quite often. I learned very early on to be more careful about both properly powering my radios down, releasing the card after inserting it into my PC and avoiding touching the contacts.

My radios typically run 24/7/365 and, based on experience, keep many spare/new cards on hand (and order new ones when I see sales) just to be ready for failures .... I've seen lots of failures.
 
Joined
Sep 11, 2002
Messages
1,047
#9
The SD cards are good for 10,000s of read write cycles. card failure should not be a real issue unless a cheap card is used. Either way I recommend reading and saving the card contents regularly. Since the cards are cheap I have 2 for the main favorite list that i use just in case. I also use different cards for different uses this lets me have a card for DMR searching etc while not having to worry about selecting and deselecting favorite lists etc.
 

N9JIG

Sheriff
Moderator
Joined
Dec 14, 2001
Messages
3,878
Location
Far NW Valley
#10
It is a proven fact that failure rates are reduced to almost zero merely by the presence of a programmed spare on hand. The only time I had an SD-Card failure was when I had no spare available...:D

Back to reality here: When I travel I always do keep a spare card. I do not use the replay option so I shut that off to reduce the amount of writes to the card.
 

KK4JUG

Member
Premium Subscriber
Joined
Dec 13, 2014
Messages
2,360
Location
GA, AL, TX, OK, KS, AR, NC, or MI
#13
I guess "wear out" is a relative term. A good quality SD card should be good for 100,000+ cycles. A lesser quality card will quit performing sooner because, well, because it's lesser quality.

So, yes, they'll wear out but the better the quality, the longer the life span.
 

kandrey89

Member
Premium Subscriber
Joined
Dec 11, 2009
Messages
308
Location
San Ramon, CA USA
#20
We will be switching our production from using 8GB TLC type SD cards to 4GB MLC type SD cards (we actually originally provided 4GB TLC cards then did an unadvertised change to 8GB).

All devices will eventually wear out an SD card (if it does any writing at all). I typically have to replace my dashcam's 2 cards every 3 months or so. It is just the nature of the SD technology.

The benefit of MLC, and what makes it worth us changing even though it will be at a lower (but still the advertised) capacity, is that MLC NAND memory has a tremendously longer life. It is recommended for use in dashcams, security video cams, and other devices that do intense data writing. They advertise up to 12,000 hours of continuous video writing before failure (in 64GB cards).

So, when you go to replace your card, we are now highly recommending you get an MLC type card. They are typically advertised as "industrial" or "high endurance." Here is an example of one on Amazon: https://www.amazon.com/Transcend-In...F8&qid=1474011547&sr=8-1&keywords=mlc+sd+card

For the capacity, the price isn't unreasonable, either.
UPMan, should stop using ****ty cards then.

I use Samsung EVO (TLC) cards in my dashcams for over 1.5 years and have had no problems.
Similarly, only because BCD436HP cannot accept anything larger than 32GB or a certain number of recorded folders, the only card I had was a SanDisk 32GB, but I hate SanDisk, because of performance and reliability issues, and even then I write all the time to that card, and it's been working fine for 2 years.
Don't know about Transcend, never used them, since they don't own their own fab, can't believe their stock from the fab is any better than SanDisk or Kingston, or others.
 
Status
Not open for further replies.
Top