![](https://coimages.sciencemuseumgroup.org.uk/35/918/large_thumbnail_1993_0722.jpg)
Alarm card for first generation 30-channel PCM
- Made:
- 1975
![Alarm card for first generation 30-channel PCM, 1975](https://coimages.sciencemuseumgroup.org.uk/472/327/small_thumbnail_smg00305591.jpg)
![Alarm card for first generation 30-channel PCM](https://coimages.sciencemuseumgroup.org.uk/70/98/small_thumbnail_2014_0384__0006_.jpg)
![Alarm card for first generation 30-channel PCM](https://coimages.sciencemuseumgroup.org.uk/70/99/small_thumbnail_2014_0384__0007_.jpg)
![Alarm card for first generation 30-channel PCM, 1975](https://coimages.sciencemuseumgroup.org.uk/69/915/small_thumbnail_2014_0397__0001_.jpg)
![Alarm card for first generation 30-channel PCM, 1975](https://coimages.sciencemuseumgroup.org.uk/69/917/small_thumbnail_2014_0397__0003_.jpg)
![Alarm card for first generation 30-channel PCM, 1975](https://coimages.sciencemuseumgroup.org.uk/69/916/small_thumbnail_2014_0397__0002_.jpg)
Alarm card for first generation 30-channel PCM, 1975
Details
- Category:
- Telecommunications
- Object Number:
- 2014-397
- Materials:
- metal (unknown) and plastic (unidentified)
- type:
- alarm card
- credit:
- STC PLC - Transmission Products Division