SpecificationsFrequency Specifications

Frequency Specifications Reference

RF frequency specifications and standards for motorcycle key systems

Frequency Bands

Low Frequency (LF)

Short-range communication for transponder keys

125kHz - 134kHz
Frequency Range
Transponder KeysImmobilizer SystemsProximity Detection
FrequencyStandardRangePowerUsageBrands
125kHz
ISO11784/8510-15cmVery LowMost Common
BMWDucatiHonda+3 more

Standard frequency for most motorcycle transponder systems

134kHz
ISO11784/8510-15cmVery LowRegional
Some European Models

Alternative LF frequency used in some regions

Ultra High Frequency (UHF)

Long-range communication for remote functions

433MHz - 868MHz
Frequency Range
Remote ControlsSmart KeysKeyless Entry
FrequencyStandardRangePowerUsageBrands
433.92MHz
ISM Band50-100mLowVery Common
BMWDucatiKTM+1 more

Primary frequency for European motorcycle remote controls

315MHz
ISM Band50-100mLowRegional
Harley-DavidsonIndian

Primary frequency for North American motorcycle systems

868MHz
ISM Band50-100mLowEmerging
Premium Models

Used in advanced smart key systems

Near Field Communication (NFC)

Very short-range communication for advanced systems

13.56MHz
Frequency Range
Smart KeysMobile IntegrationAdvanced Security
FrequencyStandardRangePowerUsageBrands
13.56MHz
ISO144432-4cmVery LowEmerging
BMWDucati Premium

Used in next-generation smart key systems

Technical Standards

ISO11784/85

International standard for radio frequency identification of animals

Frequency:125kHz / 134kHz
Applications:
Transponder KeysBasic Immobilizers
Features:
  • Read-only operation
  • Unique ID transmission
  • Low power consumption

ISO14443

International standard for proximity cards

Frequency:13.56MHz
Applications:
Smart KeysNFC Systems
Features:
  • Bidirectional communication
  • Data encryption
  • Mobile compatibility

ISM Band

Industrial, Scientific and Medical radio bands

Frequency:315MHz / 433MHz / 868MHz
Applications:
Remote ControlsKeyless Entry
Features:
  • Long range communication
  • Multiple channels
  • Rolling code support

Regional Regulations

Europe (ETSI)

FrequencyMax PowerDuty CycleNotes
125kHz42 dBμA/m at 10mNo limitInductive systems
433MHz10mW ERP10% or LBTShort Range Devices
868MHz25mW ERP1% or LBTSRD applications

North America (FCC)

FrequencyMax PowerDuty CycleNotes
125kHz15 dBμA/m at 30mNo limitPart 15 unlicensed
315MHz50mWNo limitISM band operation
433MHz1mWNo limitAmateur radio secondary

Asia-Pacific

FrequencyMax PowerDuty CycleNotes
125kHzVaries by countryVariesNational regulations apply
433MHz10mW typicalVariesRegional harmonization

Regulatory Compliance

  • • Always verify local regulations before implementing RF systems
  • • Power limits and duty cycles vary by region and frequency
  • • Some frequencies require licensing or certification
  • • Interference with licensed services must be avoided