VHF Systems, Medium to Large Size Species (MOD)

MOD-600, MOD-500, MOD-400 and MOD-315
Four fully configured models designed for terrestrial applications

Telonics' standard line of VHF transmitters have a long history of successful performance on animals in difficult environments. The reliable packaging technology Telonics uses when manufacturing these transmitters greatly contributes to this success. Hermetically sealing the transmitter, battery and interconnects into a single hermetically sealed canister is an approach which virtually eliminates the possibility of moisture penetration into the package - this is the same technology used in the space program for maintaining high performance electronics in harsh environments. Using hermetic packaging technology, there is no problem with moisture penetration after years of deployment unless the canister is completely crushed. Even in difficult environments, such as applications involving marine mammals at great depths, Telonics provides external and internal castings that help prevent such damage. No polymeric packaging technology offers this level of reliability. All of Telonics' standard VHF transmitters are microprocessor-controlled and include various data-gathering capabilities.

Key Features

  • Multiple power levels to accommodate greater range or greater life
  • Duty cycling and seasons based on calendar dates and times to extend operational life
  • Mortality sensing based on a motion or temperature threshold
  • Optionally reports the elapsed time since mortality is detected
  • Monitors activity intensity or an active/inactive threshold
  • Activity monitoring option in models containing the MK-12 electronics
  • Field programmable with Telonics Product Programmer

Models

Model Dimensions L x W x H (in, cm) Canister Weight (g) Life @60BPM
Std Pow (months)
Life @60BPM
Min Pow (months)
Transmitter Electronics
MOD-205-2 1.7 x 1.3 x 0.7
4.31 x 3.3 x 1.77
58 14.2 21 MK-12
MOD-210-2 1.7 x 1.3 x 0.7
4.31 x 3.3 x 1.77
75 19 27.3 MK-12
MOD-225-2 1.7 x 1.3 x 0.7
4.31 x 3.3 x 1.77
85 24 34 MK-12
MOD-305-3 1.4 x 1.4 x 1.1
3.55 x 3.55 x 2.79
83 13.2 19.4 MK-11
MOD-305-2 1.4 x 1.4 x 1.1
3.55 x 3.55 x 2.79
83 14.2 21 MK-12
MOD-310-3 1.4 x 1.4 x 1.1
3.55 x 3.55 x 2.79
88 17.6 25 MK-11
MOD-310-2 1.4 x 1.4 x 1.1
3.55 x 3.55 x 2.79
88 19 27.3 MK-12
MOD-315-3 1.4 x 1.4 x 1.1
3.55 x 3.55 x 2.79
100 22 31.2 MK-11
MOD-315-2 1.4 x 1.4 x 1.1
3.55 x 3.55 x 2.79
100 23.5 31.5 MK-12
MOD-335-3 1.4 x 1.4 x 1.1
3.55 x 3.55 x 2.79
105 24 37 MK-11
MOD-335-2 1.4 x 1.4 x 1.1
3.55 x 3.55 x 2.79
105 28 40 MK-12
MOD-400-3 2.4 x 1.5 x 1.3
6.09 x 3.81 x 3.3
175 33.2 47 MK-11
MOD-400-2 2.4 x 1.5 x 1.3
6.09 x 3.81 x 3.3
175 35.2 50.6 MK-12
MOD-415-2 2.4 x 1.5 x 1.3
6.09 x 3.81 x 3.3
175 40.8 58.3 MK-12
MOD-500-3 2.7 x 2.0 x 1.4
6.85 x 5.08 x 3.55
265 75 100.5 MK-11
MOD-500-2 2.7 x 2.0 x 1.4
6.85 x 5.08 x 3.55
265 79.7 110 MK-12
MOD-515-2 2.7 x 2.0 x 1.4
6.85 x 5.08 x 3.55
352 78 108 MK-12
MOD-550-3 4.1 x 1.5 diam
10.41 x 3.81 diam
250 75 100.5 MK-11
MOD-550-2 4.1 x 1.5 diam
10.41 x 3.81 diam
250 79.7 110.6 MK-12
MOD-600-3 3.0 x 2.7 x 1.9
7.62 x 6.85 x 4.82
485 133 175 MK-11
MOD-600-2 3.0 x 2.7 x 1.9
7.62 x 6.85 x 4.82
485 141 187 MK-12

Data Logging Option (Option 350)

The Data Logging Option for MK-11 and MK-12 transmitters (Option 350) allows sensor data from the MS6 mortality-motion sensor, MA activity sensor, and/or the MS4 temperature sensor to be stored in transmitter memory and made available for download if the transmitter is able to be retrieved at the end of a study. Additional information regarding how these sensors work is provided in the Sensor Options section below. This option requires use of Telonics Data Converter to download the stored data.

When this option is selected, data from any to all of the three sensors can be stored in internal memory in the transmitter. The sensors can either be directed to also control pulse period/rate or not, in the same way they would function without the data logging option. As one example, if all three sensors were enabled, either the MA activity sensor or MS4 temperature sensor could be used to control the transmitter’s active/alive pulse period, and the MS6 mortality-motion sensor would define the inactive/mortality pulse period after time-out without the required amount of motion.

For the MS6 motion-mortality sensor, the data logging records each date and time the sensor switches from active/alive to inactive/mortality or back. (The most recent 9-16 such transitions are recorded even without this option, but this option stores all such transitions).

For the MA activity sensor, the data logging option stores accelerometer data at user-defined intervals. These intervals may be the same throughout the anticipated life of the transmitter or they may change “seasonally”. The activity data recorded is the number of active seconds (or other defined classification interval) during a defined collection interval. For example the number of active seconds in a one hour collection interval would be saved as a number between 0-3600. User’s also select whether or not the collected activity data controls the transmitter’s pulse rate. If selected, the activity collection schedule for pulse rate control can either match the schedule for data which is logged, or it can be different.

For the MS4 temperature sensor, the data logging option stores temperature data at user-defined intervals (in 0.16oC increments). These intervals may be the same throughout the anticipated life of the transmitter or they may change "seasonally". User’s also select whether or not the collected temperature data controls the transmitter’s pulse rate. If selected, the temperature collection schedule for pulse rate control can either match the schedule for data which is logged, or it can be different. However, sampling to control pulse rate has a maximum interval of 18 hours and it remains constant for the life of the transmitter (no seasonal changes).

Specifications for Transmitter Electronics

MK11/12 Transmitter General Specifications

MK-11 and MK-12 beacons are microprocessor controlled pulsed-CW transmitters, designed for operation within the 137 - 225 MHz frequency range. Each MK-11 beacon transmits on a single, field-programmable frequency (within the frequency range that is ordered). MK-11 beacons also support 3 field-programmable power levels. The MK-12 beacon is crystal based, and therefore each beacon is built to operate on a specific frequency and with a specific power output (four power levels to choose from when ordering).

Frequency Range MK11:
137 - 143 MHz (option 700),
143 - 156 MHz (option 710),
154 - 164 MHz (option 720),
162 - 174 MHz (option 730),
164 - 182 MHz (option 740),
182 - 201 MHz (option 750),
201 - 222 MHz (option 760)

MK12:
140 - 225 MHz
Frequency Tolerance MK11:
Calibration: ±3 ppm max at room temperature / ±5 ppm from -40° to +70°C
Aging: <1ppm/yr
Shock: <1ppm 3000g x 0.2ms x ½ sine x 3 directions

MK12:
Calibration: ±17 ppm at room temperature / ±25 ppm from -40° to +70°C
Load: <7ppm typical for VSWR < 6:1
Supply Voltage: <3ppm typical over supply voltage range at 25°C
Aging: <1ppm/yr
Shock: <1ppm 3000g x 0.2ms x ½ sine x 3 directions
VSWR Stability MK11: RF output stable to 10:1 VSWR, all phases.
Radiated harmonic levels are degraded with poor load VSWR.
Spurious emission specification maintained for > 10:1 VSWR.

MK12: RF output stable to 5:1 VSWR, all phases.
Radiated harmonic levels are degraded with poor load VSWR.
Spurious emission specification maintained for > 5:1 VSWR.
Output Power
MK11: Field Programmable using TPP
Transmit Power Peak Power Output
Relative to Medium Power
Low 0.5 * Medium Power
Med  
High 2.0 * Medium Power

MK12: Ordering Options for Power Level
Option Transmit Power Peak Power Output Levels
Relative to Standard Power
200 Low (Temperature > -20°C) 0.5 * Medium Power (Higher efficiency)
202 Low 0.5 * Medium Power
204 Medium  
206 High 2.0 * Medium Power

Output power is measured into 50 Ω load. Effective Isotropic Radiated Power (EIRP) varies, depending on packaging, antenna configuration, and immediate environmental conditions.
Emission Designator MK11: 2k00P0N -
California users: These transmitters meet the California requirement of EIRP < 0.009 W for all conditions.
MK12: 1k00P0N -
California users: These transmitters exceed the emission designator requirement of 2k00P0N for operation in California. The 1k00P0N emission designator is identical to the 2k00P0N except that it occupies only half of the 2 kHz bandwidth allowed by the State of California for wildlife tracking.
Harmonic and Coherent Spurious Suppression MK11: <-30 dBc into 50Ω load
MK12: Coherent Spurious <-10 dBc
Spurious Suppression MK11: <-35dBc typical at > 10kHz offset from carrier
MK12: Non-Coherent Spurious <-50 dBc
RF Pulse Width 15 msec standard
Can optionally be configured from 10 - 250 msec
Pulse Period Configurable from 250 - 5000 msec (12-240 Bpm)
RTC Accuracy / Seasonal Timing Temperature Compensated:
± 12min/yr max
Temperature Range -40°C to +70°C (Note: Temperature range is for the transmitter only. The power supply must provide the required peak current and voltage requirements for the transmitter over the expected temperature range.)
Shutdown Component Externally shutdown by presence of a small magnet
Available Sensors
MS6 Mortality - Motion Sensor
MA Activity Sensor
MS4 Temperature Sensor
MS5 Temperature-triggered Mortality Sensor
Sensor descriptions available separately

Sensor Options for VHF Transmitters using the MK-11 or MK-12 Electronics

MK-11 or MK-12 Sensor Options