New Receiver Code Maps for VEMCO 69 kHz Receivers


The VEMCO standard receiver code map is now MAP-115. This new maps adds in needed sensor tag code spaces that allow us to offer new features and functionality in our tags. Please note that MAP-115, in order to support new tag types, has removed support for older tag types no longer supported by VEMCO. If you have still active tags that use code space A69-1105 (sensors) or A69-1303 (pingers) please discuss the appropriate code map for your studies with your VEMCO sales representative.

Note: Customers in Canada, USA, and Australia will continue with MAP-114 as their default map due to a small number of long life A69-1303 tags that continue to be detected by multiple receiver networks. The new map will be phased into these regions as these older tags die off.

Frequently Asked Questions


What is a Code Map?+

  • A code map, downloaded to the receiver, provides the instructions it needs to detect and decode transmissions from a VEMCO tag. A code map contains a collection of tag code spaces.

What is a Code Space?+

  • A code space is used to describe how information is encoded in a tag transmission. It includes, among other things, the number of pings and the anticipated spacing between those pings. You can determine the tag code space by looking at the detections in VUE under the transmitter heading e.g. A69-1601-123 or A69-9001-123. The code space and ID # form a unique transmitter identifier.

What are A69-1105 and A69-1303 tags?+

  • A69-1105 and A69-1303 are our original legacy code spaces that have been completely exhausted and oversubscribed. A69-1105 was for sensor tags and A69-1303 for pingers. We have not routinely sold these tags for many years. They will be superseded in MAP-115 with newer code spaces that provide more IDs and improved error checking.

Are you selling tags that are only supported on new maps?+

  • No, not yet. We introduce a new code map well in advance of selling any of the new code spaces. We know it takes times, often greater than 1 year, for researchers to update all of their receivers as they are often deployed in remote locations. All tags sold by Vemco today are supported on receivers configured with MAP-113, Map-114, and MAP-115. We will be following up with additional communications campaigns before any of the new tags are sold so that we can be sure that everyone has had ample time to update their receivers.

Should I update to my map now?+

  • Yes, if you are among the vast majority of VEMCO customers who are not tracking any of the older tags (with tags IDs A69-1105-XXXX and A69-1303-XXXX) then we would advise you to update your receivers to MAP-115 at your earliest convenience. There is no need to make a special trip as they can be updated the next time you offload data in the field and initialize your receiver with the latest version of VUE.

    Researchers in North America and Australia who are tracking older A69-1303 tags or collaborating with other researchers who are tracking A69-1303 tags should update their receivers to MAP-114 rather than MAP-115

    Anyone with active A69-1105 tags will need to keep their receivers on MAP-113. Note that new receivers are not shipped by default with support for MAP-113. Please inform your sales rep if you are tracking A69-1105 tags.

How do I update my receivers?+

How does VEMCO support long life tags?+

  • Managing  code maps, and how tag IDs are assigned on code spaces, is particularly important so that we can sell and support long life (up to 10 year) transmitters. The need for long life transmitters puts an additional burden on the availability of unique tag IDs and requires us to ensure that receivers deployed 10 years from now can continue to decode 10 year tags that are sold today. We use our tag database and code maps to carefully manage long life tags and carry support for these long life tags along with each new code map release.
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