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Columbus P-70 Ultra Precise GNSS Receiver (USB and Bluetooth Interfaces, 1 cm accuracy with RTK, 30 cm accuracy standalone)

$428.00 CAD

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Country of Origin: China

Columbus P-70 Ultra dual-frequency RTK GNSS receiver

The Columbus P-70 Ultra is Columbus’ 2025 flagship GNSS receiver for professionals who need dependable, high-precision positioning. In RTK mode it delivers 1.0 cm horizontal and 1.5 cm vertical accuracy, with 30 cm accuracy in standalone SBAS mode—suitable for surveying, mapping, RTK infrastructure, and related field work.

Its compact, lightweight design is easy to carry or integrate, while TTL / UART and Bluetooth keep connection options flexible. A high-gain waterproof dual-band antenna (L1 and L5) supports strong reception outdoors. The P-70 Ultra combines professional-grade capability with an accessible price for individual and enterprise use.

1.0 cm RTK horizontal · Dual-band L1/L5 · Bluetooth 5.1 + UART · Rover & base modes · 65 × 18 × 10 mm · ~23–27 g

Key Features

Centimeter-Level Accuracy

RTK: 1.0 cm horizontal · 1.5 cm vertical
Standalone / SBAS: 30 cm (CEP 50%)
Built for precision surveying, mapping, and professional applications

→ Survey-grade precision in a pocket-sized receiver

Dual-Frequency GNSS

Supports L1 and L5 bands
Improved reception and faster positioning
Better performance in challenging environments

→ Stronger dual-band signals than single-frequency receivers

High-Gain External Antenna

LNA gain: +29±2 dB (L1) · +27±2 dB (L5)
IP67 waterproof antenna for outdoor use
Active amplification · SMA connector · 300 cm cable

→ Outdoor-ready antenna with strong dual-band gain

Magnetic and optional helical antenna options

Flexible Antenna Design

Default magnetic high-gain antenna for vehicles
Supports optional helical antennas for UAVs and specialty mounts
Magnetic / adhesive mounting options

→ One receiver platform for vehicles, UAVs, and custom setups

Compact · Lightweight · Low Power

65 × 18 × 10 mm · about 23 g (main unit)
UART version weight: 27 g
Power: DC 3.3–5 V / 80 mA

→ Easy to carry or embed in portable systems

Multiple Connection Options

Bluetooth 5.1 dual-mode: SPP and BLE
UART 3.3 V TTL adapter cable
Two Bluetooth channels for NTRIP and data

→ Connect phones, PCs, and embedded controllers without friction

RTK rover and base station operating modes

RTK Rover & Base Modes

Rover mode with CORS / NTRIP correction networks
Base mode with NTRIP software for RTCM streaming
RTCM MSM4 / MSM7 support

→ One device for field rover work and local base streaming

Fast Init · Multi-Constellation

GPS · BeiDou · GLONASS · Galileo · QZSS · IRNSS
Dual-frequency reduces multipath and speeds acquisition
RTK initialization typically under 5 seconds

→ Global constellation coverage with quick RTK lock

Cost-effective professional GNSS solution

Cost-Effective Professional Solution

Professional-grade precision and feature set
Accessible pricing for individuals and enterprises
Strong value for surveying, mapping, and RTK projects

→ Flagship capability without a flagship-only budget

Test and Demo

Independent static and dynamic tests under clear-sky conditions with an approximate 500 m baseline (RTK tests).

1. RTK Mode — Static Positioning Test

Objective: Evaluate static positioning accuracy
Duration: 1 hour · Refresh rate: 1 Hz
Time: UTC 2024-12-31 14:24:01 to 15:24:00
Method: Antenna kept stationary while collecting 3,600 consecutive points; average position used as center; CEP calculated
Conditions: Clear skies · ~500 m baseline · continuous RTK corrections
Download raw data recorded by P-70 Ultra

Results

CEP(50%): 0.3034 cm — better than the specified 1.0 cm
CEP(100%): 1.0618 cm

→ 50% of points fell within a 0.3034 cm radius of the average position

2. RTK Mode — Dynamic Stability Test

Objective: Assess positioning and tracking accuracy during motion
Duration: 785 seconds · Refresh rate: 1 Hz · Rotations: 20 cycles
Time: UTC 2025-01-03 14:05:55 to 14:18:59
Method: Antenna phase center on a 20 cm-radius disc edge; ~40 s/cycle (~3.1 cm/s linear speed)
Conditions: Clear skies · ~500 m baseline · continuous RTK corrections
Download raw data recorded by P-70 Ultra

Synchronized visual record from the disc rotation test.

Results

Tracking ultra-slow motion is demanding for RTK devices. In this test:

Recorded trajectory matched a ~19.5 cm radius path (from the antenna phase center)
Across multiple rotations, trajectory width stayed within 1 cm

→ Exceptional tracking consistency under slow, repeated circular motion

3. SBAS Mode — Independent Static Positioning Test

Objective: Evaluate standalone accuracy without RTK corrections
Duration: 1 hour · Refresh rate: 1 Hz
Time: UTC 2024-12-30 12:40:00 to 13:39:59
Method: Antenna kept stationary; 3,600 points; CEP from average center
Conditions: Clear skies · DGPS / SBAS throughout
Download raw trajectory data recorded by P-70 Ultra

Results

CEP(50%): 21.7055 cm — better than the specified 30 cm

→ Strong standalone accuracy when RTK corrections are unavailable

Technical Specifications

Protection & Environment

External GNSS Antenna	IP67
Receiver Body	Not waterproof
Operating Temperature	-40°C to 85°C

GNSS Chipset

Chipset	High-precision RTK GNSS chipset with EPS Ultra Technology
Channels	120

GNSS Bands — L1

GPS	L1C/A · 1575.42 MHz
BeiDou	B1I, B1C · 1561.098 MHz
Galileo	E1B/C · 1575.42 MHz
GLONASS	L10F · 1602 MHz
QZSS	L1C/A · 1575.42 MHz
SBAS	L1C/A

GNSS Bands — L5

GPS	L5 · 1176.45 MHz
BeiDou	B2a · 1176.45 MHz
Galileo	E5a · 1176.45 MHz
QZSS	L5 · 1176.45 MHz
IRNSS	L5 · 1176.45 MHz

Positioning Accuracy

RTK Horizontal	1.0 cm + 1 ppm (CEP 50%)
RTK Vertical	1.5 cm + 1 ppm (Median)
RTK Speed	0.05 m/s
Dynamic Orientation	0.3°
SBAS Horizontal	30 cm (CEP 50%)

Maximum Operating Range

Maximum Altitude	80,000 m
Maximum Horizontal Velocity	1,800 km/h
Maximum Acceleration	72,000 km/h

Acquisition & Sensitivity

Cold Start	< 28 seconds
Hot Start	< 3 seconds
Reacquisition	< 2 seconds
Tracking Sensitivity	-165 dBm
Cold Start Sensitivity	-148 dBm
Hot Start Sensitivity	-159 dBm
RTK Initialization	< 5 seconds

Update Rate & Protocols

RTK Update Rate	Up to 10 Hz
SBAS Update Rate	Up to 20 Hz
NMEA 0183	V4.10 · WGS84
RTCM	MSM4 · MSM7

Bluetooth & UART

Bluetooth Channel 1	P-70 Ultra NTRIP · SPP 2.1 · BLE 5.1
Bluetooth Channel 2	P-70 Ultra · SPP 2.1 · BLE 5.1
Bluetooth Range	> 10 m
UART / TTL Chipset	Silicon Labs CP2105
UART TTL Voltage	3.3 V

Power

UART TTL Version	DC 3.3–5 V / 80 mA

UART TTL Version

DC 3.3–5 V / 80 mA

GNSS Antenna (Default Magnetic)

Type	External active GNSS antenna
Impedance	50 Ω
VSWR	< 2.0
LNA Gain	+29±2 dB (L1) · +27±2 dB (L5)
Noise Figure	< 1.5 dB
Connector / Cable	SMA (male) · RG174 · 300 cm
Antenna Power	3.3 V · 16 mA
Mounting	Magnetic · Adhesive

System Requirements

Windows	Windows 7 or later
macOS	Mac OS X 10.10 or later
Linux	Kernel 2.6.12 or later
Android	Android 10 or later

Size and Weight

Columbus P-70 Ultra main unit dimensions UART version

Main unit (UART version) · Weight: 27 g

Columbus P-70 Ultra external antenna dimensions

External antenna · Weight: 106 g

Part Description

Columbus P-70 Ultra parts and connectors

What's in the Box

P-70 Ultra GNSS Receiver Main Unit
External Active Antenna
Warranty Card
Helical Antenna Kit (Optional)

Use P-70 Ultra on iPhone & iPad

Pair the Columbus P-70 Ultra with the free GeoAstra BLE-GNSS iOS app to run RTK workflows, share receiver NMEA with other apps on the same device, and collect field data from iPhone or iPad.

GeoAstra BLE-GNSS is the software bridge that brings a compatible BLE GNSS receiver—such as P-70 Ultra—onto iOS. Positions shown and recorded in the app come from the connected receiver, not from the built-in iPhone/iPad GPS.

Free on the App Store — no website purchase required.