What does HDR stand for?
HDR stands for "Half-Duplex Relay"
How to abbreviate "Half-Duplex Relay"?
"Half-Duplex Relay" can be abbreviated as HDR
What is the meaning of HDR abbreviation?
The meaning of HDR abbreviation is "Half-Duplex Relay"
What does HDR mean?
HDR as abbreviation means "Half-Duplex Relay"
