The either the ignition sense needs to be connected or the Red pigtail lines need to be connected for the radio to remain powered on
The T03-00012-AEFA (T03-00012-AEAA) is a desktop charger for Tait TP81/93/94/96 Radios
However there are some flight helmets' that use the NATO / US wiring standard for the U174 Connector which are not compatible with these flight helmet adapters
110 Watt High Power
Behind the Head Dual Muff Headset for Kenwood NX-200, TK-190 Series Portables Bundle The either the ignition senseWhat is the Behind the Head Dual Muff Headset? The Behind the Head Dual Muff Headset is specifically engineered for Kenwood NX and TK series portable radios. This headset offers superior audio quality with dual muff earpieces that provide excellent sound isolation, making it perfect for use in noisy environments. Compatible with the Following Radios: Kenwood NX 200, NX 300, TK 190, TK 2140, TK 2180, TK 280, TK 290, TK 3140, TK 3148, TK 3180, TK 380,