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868MHz Radio Modems | WP-35-REV0-0809-4/4 © 2009 by B&B Electronics Mfg. Co., Inc.

Each slave node radio could subsequently respond with a data packet up to 80 bytes in length before running into a duty cycle restriction. Alternately, simply setting all nodes to a serial rate of 2400 baud, while not the highest performance, avoids any concern of hitting the duty cycle constraints.

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Everything You Wanted To Know About 868MHz Radio Modems - 59059 Receive Sensitivity

The over-the-air data rate or RF data rate has a direct relationship to the receive sensitivity. The B&B Electronics 868 core radio is fixed at a -112dbm at 24 kbps. When comparing radios, it is critical to look at receive sensitivity and RF data rate. The lower the receive sensitivity, the better the range.

RS232 Serial Data Specification

How does serial parity, stop bits, etc, factor into the throughput? With the B&B Electronics 868 radio, this is not an issue. Serial settings for parity, number of data bits or stop bits will not affect radio throughput.

Repeaters and Mesh Networks

Although not supported at this time, applying repeater and mesh features will affect the throughput and consume duty cycle. Any time data is transmitted from a radio, it is eating through the radio’s duty cycle and RF data throughput. Repeaters and mesh functions can have unintended consequences. ###

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