Attendees

Dante Sivo (RIT Student)

Jonathan Russo (RIT Student)

Topics:

RF Options
RF Part Options
Datalink Block Diagram

RF Options

FM Radio Study: http://www.nab.org/xert/scitech/pdfs/rd022309.pdf

Communication Type	Operational Range	Frequency Band	Pros	Cons
FM Radio		88.0 MHz → 108.0 MHz	Proven Technology	Will have to account for nearby stations
AM Radio		540kHz → 1700kHz	Proven Technology	Will have to account for nearby stations
LoRa	3 miles (urban), 10+ miles (line of sight)	915MHz (NA)

RF Part Options

Part Name	Manufactuer	Outdoor Range	Datarate	Cost Per Part ($)	Comments	Link
XBP9X-DMUS-001	XBEE	105km	10kbs→250kbps	122.61	Out of stock	https://www.digikey.com/en/products/detail/digi/XBP9X-DMUS-001/5972744
RM191-SM	Laird Connectivity	15km	980bps → 21.kbps	20.59		https://www.digikey.com/en/products/detail/laird-connectivity-inc/RM191-SM/6109664
XBP9X-DMUS-011	XBEE	105km	10kbs→250kbps	122.61	For Brazil, verify compatibility with NA bands	https://www.mouser.com/ProductDetail/DIGI/XBP9X-DMUS-011?qs=u4fy%2FsgLU9PDEP8%2FPyF26w%3D%3D&mgh=1&gclid=CjwKCAjwvNaYBhA3EiwACgndgiW93uZ33xD3WKOrKxhexVywvwCpBxA7gFkjh2RFBr7HZoGWrTvIGRoCq64QAvD_BwE
RN2903A-I/RM105	Microchip	15km	300 kbps (FSK) 12.5 kbps (LoRa)	$17.40		https://www.digikey.com/en/products/detail/microchip-technology/RN2903A-I-RM105/9867252

GPS Module Options

Part Name	Manufactuer	Cost Per Part ($)	Comments	Link	Voltage	Peak Current Draw	Comm Standards
SAM-M8Q	UBlox	31.50	Integrated Antenna, UART only	https://www.digikey.com/en/products/detail/u-blox/SAM-M8Q-0-10/7393574	2.7-3.6V	67mA	UART, USB, SPI, DDC
NEO-M8M	Ublox	27.00	Dev Kits available (Dante has one)	https://www.digikey.com/en/products/detail/u-blox/NEO-M8M-0/6150640	3.6V????	67mA	UART, SPI, DDC
NEO-M9N	Ublox	27.00	Newer iteration, higher data rate	https://www.digikey.com/en/products/detail/u-blox/NEO-M9N-00B/12149174	3.0V	100mA	USB, UART, SPI, I2C
MAX-M8W	Ublox	23.00	Low Power Consumption	https://www.digikey.com/en/products/detail/u-blox/MAX-M8W-0/6150637	3.0V	67mA	UART, DDC (I2C)

GPS Performance Comparison

Part Name

Position Accuracy

Systems Supported

Sensitivity (tracking and nav)

Max Altitude

Max Velocity

Cold Start

Hot Sart

Receiver

Time Pulse Accuracy

Time Pulse Frequency

Update Rate

NEO-M9N

2.0m

GPS, Gallio,

-167dBm

80km

500m/s

24s

2s

Multi-constellation GNSS standard precision receiver engine

RMS 99%

0.5Hz-10MHz

25 Hz

MAX-M8W

2.5m (Autonomous)

2.0m (SBAS)

GPS, GLONASS

-164 dBm

50km

500m/s

29s

1s

72-channel u-blox 8

RMS 99%

0.5Hz-10MHz

18 Hz

Datalink Block Diagram

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