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Driving relay with TX1-TX3

normancyyj
Member ✭✭
I would like to use TX1 to operate a relay that will be used to switch an antenna. Will I need to put a clamping diode across the coil and what is the maximum current that TX1-TX3 will sink?
0
Answers
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I would use a clamp diode across the relay coil.
From page 26 of the "Hardware Reference Manual": The TX Relay outputs are designed to handle signaling levels of up to +40 VDC @ 140 mA maximum.
Gayle K0FLY
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Thanks for your response. I intend to switch in different antennas for transmit on different bands when operating remotely on antenna 20
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