Hitachi VT-M281A Owner's Manual page 11

Introduction
Capabilities: With this hookup, you should now be able to perform all the
basic functions provided by this equipment.
External or Internal 300 Ohm Antenna
If you have either an external or internal (rabbit ears) antenna rather than
cable, you may have 300 ohm connectors like these.
In this case, you will need special adapters (not provided with VCR) to
make the 75 ohm round wire connections shown below. (You may already
have one on your TV.)
1. Remove the antenna line from the back of your TV if it is already
connected there, or take it from where it comes in on the wall.
2. Considering the three pictures below, determine which adapter you will
need to hook it into your VCR.
If you have Use this adapter
Single 300 ohm flat wire
Separate UHF and VHF
antenna wires, both 300 ohm
flat wire
300 ohm flat UHF and 75 ohm
round VHF
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