The 13D3800-H from Qual-Tron, Inc. is a low-power transceiver modem.
The 13D3800-M from Qual-Tron, Inc. is a Radio Frequency transceiver modem covering 154 to 158.3 MHz with FSK modulation, an RS-485 interface and 2.4 kbps data rate.
The 13D3800-L from Qual-Tron, Inc. is a low-power transceiver modem.
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