T/R means Transmit/Receive in Military




Similar to T/R

3DS - Digital Decision Display System
3JR - Third Battalion Jamaica Regiment
3M - Maintenance and Materiel Management
3XMAG - 3X Magnifier lens
4-W - 4-Wire
407 RRD - 407th Radio Research Detachment
442 RCT - 442nd Regimental Combat Team

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