| All returns accepted | ReturnsNotAccepted |
|---|---|
| Model | AD-27 C 1 |
| Country/Region of Manufacture | United States |
| Brand | Atkinson Dynamics (Federal Signal) |
Check the listing for details. Atkinson Dynamics AD-27A-6 Intercom Series C. Condition: Seller refurbished. Listed at 450.00 USD. Atkinson Dynamics AD-27-6 Series C The -6 indicates that it uses a 4-wire audio system, with separate paths for 'Send' and 'Receive'. This allows units to be individually (and privately) addressed from a MASTER control location. Series 3 ( or C) use a printed circuit board in place of earlier point-to-point wiring. Is it better ? My experience is that it is susceptible to vibration damage in earlier units due to inadequate support of the output transistor heat sink assembly.
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