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

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 > -20C) 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
• Motion Sensor (3-axis accelerometer) - Option 500

- Activity - Used to determine the level of activity of the study animal. The animal's motion is sensed once each second to determine "active" Classification Periods (programmable in length). At the end of a programmable Update Period, the number of "active" Classification Periods is used to establish either: a) one of two programmable, fixed pulse periods (i.e., Low activity level, or High activity level), or b) to control a variable pulse period that defines the measured amount of activity.

- Mortality - Provides an "active/alive" or "inactive/dead" pulse period depending on the activity level of the study animal. Motion is sensed once each second and a tally is made of "active seconds" over a programmable period of time (the Mortality Period). If the count of "active seconds" over this period of time is below a programmable threshold, the animal is deemed dead and the unit transmits a programmable, fixed pulse period. Otherwise, the animal is considered alive, in which case, the unit transmits according to its normal programmed behavior. This can alternatively be used to trigger the "Time Since Event" function.

• Temperature Sensor

- Temperature measurement - Temperature is measured via the sensor specified when the unit was ordered/built (see table below). The temperature is measured at a programmable time interval, and is used to control a variable pulse period.

- Mortality - Temperature is measured via the sensor specified when the unit was ordered/built. (Default is Opt. 400, centered at 37°C.) When the temperature is below a programmable value, the animal is deemed to be dead, causing the unit to transmit at a programmable, fixed pulse period. Otherwise, the animal is considered to be alive, in which case, the unit transmits according to its normal programmed behavior. This can alternatively be used to trigger the "Time Since Event" function.

Temperature sensor specs:
Sensor Type Range Resolution Accuracy (uncal) Accuracy (calibrated*) Opt #
Thermistor Center temp = 14°C -40 to +70°C 0.390° @ -40°C
0.076° @ 14°C
0.342° @ 70°C
±0.39°C typ
±2.0°C max
  401 - Onboard
406 - Remote
-10 to +32°C <=0.1°C ±0.28°C typ ±0.08°C + CalErr** typ. (Cal @ 14°C)
Thermistor Center temp = 37°C -40 to +70°C 1.041° @ -40°C
0.087° @ 37°C
0.162° @ 70°C
±0.47°C typ
±3.35°C max
  400 - Onboard
405 - Remote
+14 to +47°C <=0.1°C ±0.28°C typ ±0.09°C + CalErr** typ. (Cal @ 37°C)
Digital -40 to +70°C 0.0625°C ±1°C max ±0.0625°C + CalErr** typ. (Cal @ any temp) 410 - Onboard

* Calibration is the responsibility of the user, consisting of a 1-point calibration at the listed temperature.

** CalErr is the Calibration Uncertainty which is the error inherent in the calibration procedure. This value is dependent on the end user's calibration procedure and equipment accuracy.

MK11/12 VHF Transmitter Sensor Option Descriptions

MK11/12 Sensor Option Descriptions