BELL No. 66A

500 ohm plus 400 ohm Non Inductive coil.

Single stroke for use on Test Desks.

Includes Bell No 56C (modified) and Resistor Coil No 9 (400 ohm) on wooden base.

Replaces ‘Sounder 900 ohm’ on Test desks only.


BACK Home page BT/GPO Telephones Search the Site Glossary of Telecom Terminology Quick Find All Telephone Systems

Last revised: January 18, 2016