In Illinois, HAM RADIO license plates allow the driver to utilize a
headset receiver. Otherwise, it is illegal to use them in an auto,  car
or truck.
625 ILCS 5/12-610 (reference 625 ILCS 5/3-607 of this code)
Exception being motorcycle/motor-driven cycle communications with a
helmet/receiver device 625 ILCS 5/11-1403
Will Sperling, WA9YHX, Administrative Sysop
The Chicago Area Radio Monitoring Association (CARMA) BBS
Box 40, Westmont, Il. 60559-0040
BBS:  630-852-1292
FAX:  630-512-0609
Email:  wills@carmabbs.com
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