Page Comparison

single-banded (L1), M8P module uses M8 positioning engine and is able to support Time Kinematic (RTK) technology.

Dual banded (L1, L2), F9P module uses F9 positioning engine. which is newer than M8, and is able to support Time Kinematic (RTK) technology.

Cheaper

Easier to find alternatives

Incorrect position compared to F9P

Resolves RTK FIXED within seconds

Better position hold performance

Expensive

single-banded (L1), M8P module uses M8 positioning engine and is able to support Time Kinematic (RTK) technology.

Dual banded (L1, L2), F9P module uses F9 positioning engine. which is newer than M8, and is able to support Time Kinematic (RTK) technology.

Cheaper

Easier to find alternatives

Incorrect position compared to F9P

Resolves RTK FIXED within seconds

Better position hold performance

Expensive

Product page

https://www.u-blox.com/en/product/neo-f9p-module?legacy=Current#Product-Selection

https://www.u-blox.com/en/product/zed-f9p-module

Cost (CAD)

$350

$129

$150-220

Reliability

L1, L5

L1, L5

L1, L2

Rover only

Size and Weight

12 x 16 x 3.6 mm, 1.25g

17 x 22 x 2.4 mm, 2g

17 x 22 x 2.4 mm, 2g

Position Accuracy

0.01 m + 1 ppm CEP

0.01 m + 1 ppm CEP

< 0.01 m + 1 ppm CEP

Convergence time

< 10 s

Cold start 27s - 37s

< 10 s

Cold start 25s - 30s

< 10 s

Cold start 24 s - 28s

VSupply

2.7 V to 3.6 V

2.7 V to 3.6 V

2.7 V to 3.6 V

Interface

Driver needed.

Driver needed.

Driver needed.

Weatherproof?

−40 °C to +85 °C

−40 °C to +85 °C

−40 °C to +85 °C

Product page

https://www.u-blox.com/en/product/neo-f9p-module?legacy=Current#Product-Selection

*Product including NEO-F9P and is compatible with Ardupilot usually ranges between 300-400$

https://navspark.mybigcommerce.com/px1172rh-hat-px1172rh-l1-l2-rtk-position-heading-receiver-for-arduino-raspberry-pi-pixhawk-and-surveying/

*Needs to buy antenna separately. Antenna is about 50$, 154 grams. Supply voltage 3V-12V. https://navspark.mybigcommerce.com/multi-frequency-high-precision-antenna/

Cost (CAD)

$350

Pricier than PX1172RH

$190

Reliability

L1, L5

L1, L2

L5 performs better with obstacles and produces less noises

Size and Weight

12 x 16 x 3.6 mm, 1.25g

17 mm x 22 mm x 2.9 mm, 1.7g

Bigger and Heavier

Position Accuracy

0.01 m + 1 ppm CEP

0.01 m + 1 ppm CEP

Convergence time

< 10 s

Cold start 27s - 37s

Cold start takes more time

< 10 s

Cold start 28s -29s

VSupply

2.7 V to 3.6 V

3.3V DC +/-10%

Consumes more power

Interface

Driver needed.

Driver needed.

Weatherproof?

−40 °C to +85 °C

−40 °C to +85 °C

PX1122R

L1, L2

position

1cm + 1ppm

$85

PX1125R

L1, L5

position

1cm + 1ppm

$50

PX1172R

L1, L2

position

1cm + 1ppm

$60 (bare)

PX1172RH

L1, L2

position, heading

1cm + 1ppm

$150

PX1175RDP

L1, L2

position, dead reackoning

1cm + 1ppm

$70 (eval board)