GUIDE K35 Series Specifications

Review the GNSS performance, module interfaces, inertial-sensor options, electrical limits, and physical specifications of the GUIDE K35 Series embedded L1/L5 RTK GNSS modules. Variant-specific parameters are marked as K35C or K35E.

GNSS performance

The K35 Series combines a 135-channel Airoha AG3335 GNSS platform with dual-band L1/L5 tracking and RTK correction-data support.

Parameter Specification
Receiver type 135-channel Airoha AG3335 L1/L5 dual-band GNSS module.
Constellations and frequencies GPS: L1C/A, L5
GLONASS: L1
Galileo: E1, E5a
BeiDou: B1I, B1C, B2a
QZSS: L1C/A, L5
SBAS: L1
Navigation update rate
K35C · Standard RTK 1 Hz
K35E · RTK + DR 10 Hz
Position accuracy Standalone: ≤ 1.0 m CEP
RTK fixed: ≤ 1 cm + 1 ppm CEP
Velocity accuracy Standalone: 0.2 m/s
RTK fixed: 0.03 m/s
TTFF · AGNSS off Cold start: 26 s
Warm start: 16 s
Hot start: 1 s
TTFF · EASY enabled Cold start: 16 s
Warm start: 2 s
Hot start: 1 s
TTFF · EPO enabled Cold start: 5 s
Warm start: 3 s
Hot start: 1 s
Sensitivity Acquisition: −145 dBm
Reacquisition: −157 dBm
Tracking: −165 dBm
Dynamic limits Altitude: 10,000 m
Velocity: 500 m/s
Acceleration: 4 g

Receiver technologies

The AG3335 platform includes assistance and interference-control functions for module evaluation and embedded deployment.

EPO extended orbit prediction

EPO supports assisted-GNSS workflows by loading extended ephemeris data. It can reduce cold-start time when initial satellite navigation information is unavailable or incomplete.

EASY embedded assist system

EASY uses local memory to calculate and predict satellite orbit data for up to three days without requiring a network connection.

Active interference cancellation

AIC supports multi-frequency suppression of up to 12 independent continuous-wave interference sources from nearby electronic components.

Data and module interfaces

GUIDE is designed for carrier-board integration. The host system manages serial communication, correction-data delivery, timing output, antenna selection, and power design at the module level.

Parameter Specification
Inertial sensor K35E only Integrated ST LSM6DSR 6-axis IMU for dead-reckoning sensor-fusion workflows.
Dead-reckoning support K35E only Supports GNSS, inertial-sensor, and wheel-tick input integration for moving-platform applications.
Timepulse output PPS timing output with 20 ns accuracy.
Serial interfaces UART: 3 × UART interfaces; UART0 is the primary host interface.
I²C: 1 × I²C interface, multiplexed with UART1.
Output protocol NMEA 0183: GGA, RMC, GSV, GSA, GLL, VTG, and GST.
Correction input RTCM v3.x. Review Protocol for message and integration details.

Electrical and physical

Parameter Specification
Power supply 3.0 V to 3.6 V DC; 3.3 V typical.
Power consumption
K35C · Standard RTK 25 mA during tracking or acquisition at 3.3 V.
K35E · RTK + DR 30 mA during tracking or acquisition at 3.3 V.
Backup mode 25 μA.
Package 24-pin LCC surface-mount package.
Package dimensions 12.2 × 16.0 × 2.5 mm.
Operating temperature −40°C to +85°C
Compliance documentation Review Certifications & Compliance for available regulatory and project-level documents.

Integration references

Continue with the carrier-board interface, package-layout, and configuration references for GUIDE integration.

Pin Definitions & Interfaces Review the 24-pin LCC signal definitions, UART and I²C interfaces, PPS timing output, and RF-path requirements. Mechanical & Dimensions Review package dimensions, recommended footprint, and surface-mount assembly references. Protocol Review NMEA output, RTCM correction input, and PAIR configuration commands.
Product evaluation

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Review the product page or discuss a module-level integration requirement with the Kalmix team.

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