The V4 – our smallest 180 kHz tag
Smaller Fish, More Species
Weighing just 0.24 grams in water (0.42 grams in air), the V4 tag is the latest addition to VEMCO’s line of miniature coded transmitters. The V4 and V5 (0.38 grams in water, 0.65 grams in air) enable researchers to track and monitor smaller fish and a broader range of species than ever before!
Why 180 kHz Frequency?
The V4 and V5, operating at 180 kHz, are designed to work well in both fresh and salt water. Choosing this frequency enabled VEMCO to develop a small, lightweight tag that would still operate well in marine environments. Tags with operating frequencies greater than 200 kHz are less effective in salt water. Depending on the conditions of your location, the V4 and V5 can have 150-200 metres range.
Detect More Tags
Researchers can now tag and release many more fish simultaneously due to the detection capabilities of our new tag transmission systems – High Residence (HR) and Pulse Position Modulation (PPM).
VEMCO Tag Activator (VTA)
The V4 and V5 do not have an activation magnet as is the case with larger transmitters. The tags are activated using a handheld unit, the VTA, that is exclusive to the 180 kHz line of transmitters only.
For more details, see Downloads section.
Tag Family Length (mm) Height (mm) Width (mm) Weight in Air (g) Weight in Water (g) Power Output (dB) Battery Life V4-180 kHz 11 mm 3.6 mm 5.7 0.42 0.24 134 Please see datasheet V5-180 kHz 12.7 mm 4.3 mm 5.6 0.65 0.38 143 Please see datasheet
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