Related Clues:
- It can be two-way ... with a hint to four squares in this puzzle
- New York's ___ City Music Hall
- Device with tuners
- Origin of many '50s TV shows
- Word after "ham" or "AM"
- Fibber McGee's broadcast medium, once
- Set day between sun and moon
- It can receive AM and FM transmissions
- Marconi creation
- Wireless communication system
- Communicate with a daughter in Brazilian port
- Car preceder or follower
- __ City Music Hall
- With 21-Across, broadcast unit that may operate with 50,000 watts
- Marconi’s invention