Transmitters by Attachment Type
Contact us

Brass Collars

  • Brass Collars

    Sometimes necessary for animals that chew though other materials.

    Collars are the predominant, but not the only, way of radio-tagging mammals. If you feel that none of the materials are appropriate then please contact us to discuss alternatives. Likewise there are a few groups for which collars are not appropriate, for small bats, or when the neck is as large as the head (e.g. mustelids and pigs), so that the collar falls off, or when scent glands are positioned on the neck (e.g. some lemurs).

    Popular for species such as large Lemurs, Rabbits, Possums, Rats, Squirrels, Woylies & Mongooses.

  • Flexibility: Low
    Durability: High, resistant to chewing
    Fastening: Relatively quick, self-locking nut and pre-drilled holes give adjustable fit
    Antenna: Brass loop forms antenna
    Weight: 4.5g – 35g - Relatively heavy compared to cable tie
    Collar Width: 7mm – 11mm, coated in comfortable material

    Sensing options available with these VHF transmitters include Posture Sensing, Activity Sensing and/or Mortality Sensing, or Temperature Sensing, depending on the transmitter type.

  • Transmitter Weight (g) No. cells Battery Length (mm) Width (mm) Height (mm) Estimated tag life -
    20ms/50ppm **
    Estimated tag life -
    12ms/30ppm **
    Light Usual Heavy*              
    Pip 6 8.5 10 1 Ag357 21 13 9 8.4 months 1.5 years
    TW-3 16 19 21 1 10-28 32 18 18 7.6 months 1.5 years
    TW-3 22 24 27 1 1/2AA 39 20 20 1.4 years 3.2 years
    TW-3 27 29 32 1 2/3AA 52 20 20 2.3 years 5 years

    * “Light” “Usual” and “Heavy” refer to the potting, i.e., the protective layer around the transmitter and cell. Tags that might get chewed, or are likely to be submerged, need heavy potting, whereas small birds need tags to be potted lightly, because they are unlikely to damage the tag and it is important to keep the weight down.

    ** All of our radio tags are made to order so the pulse rate (milliseconds) and pulse length (pulses per minute) can be customised for lifespan/detection range. Please see the tag chooser or contact one of our Technical Sales Advisors for more information.

    To see ranges (line of sight, above ground and ground to ground) please use our Tag Chooser.

  • Product sheet

Transmitters by Attachment Type
Contact us
Proud partners with
LotekSirtrackBioSonics Telemetry