PA17
PA17/47
PA17/48
PA17/49
PA17/50
PA17/51
PA17/52
PA17/53
PA17/54
PA17/55
PA17/56
PA17/57
PA17/58
PA17/59
PA17/60
PA17/61
PA17/62
PA17/63
PA17/64
PA17/65
- 280 -
Used for loop calling between EMX and PABX.
DD Spec 3.223. OBSOLESCENT.
1958.
Used with DK3/6 and DK3/15 for monitoring television
sound. 1958. DD Spec 3.228. OBSOLESCENT.
Used with DK3/7 and DK3/14 for monitoring source. 1958.
DD Spec 3.229. OBSOLESCENT.
Used on
Glasgow.
remote switching system between Westerg1en and
1958. OBSOLESCENT.
Channel telephone panel, for 2 channels of a 3 way channel
control position. DD 1958. DD Spec 3.224. OBSOLESCENT.
Channel and miscellaneous telephone panel for one channel
of a 3 way channel control position. Used with PA17/51.
DD 1958. DD Spec 3.225. OBSOLESCENT.
For clean feed and cue programme circuits.
DD Spec 3.230. OBSOLESCENT.
DD 1958.
Pre-fade and miscellaneous
DD Spec 3.231. OBSOLESCENT.
panel.
DD 1958.
Route telephone panel for 3 route telephone circuits.
DD 1958. DD Spec 3.226. OBSOLESCENT.
Source signalling circuits for 3 channels.
DD Spec 3.227. OBSOLESCENT.
DD 1958.
Used for remote control at Wrexham. 1959. OBSOLESCENT.
Programme switching, control/monitoring position for 2
channels of DK3/8. Used on BA2/4. DD 1959.
DD Spec 3.238. OBSOLESCENT.
Operator's te1e. and signalling circuits for DK3/8. Used
on BA2/4. DD 1959. DD Spec 3.239. OBSOLESCENT.
Channel telephone relays for one channel of DK3/8. Used
on BA2/4. DD 1959. DD Spec 3.240. OBSOLESCENT.
Used at Penmon on remote control systems.
OBSOLESCENT.
1959.
Alarm Relay Panel used with DK3/9 and DK3/13. DD 1959.
DD Spec 3.241. OBSOLETE.
Release and fuse alarm relays for
monitor panels. Used with
DD Spec 3.244. OBSOLESCENT.
selector bays and
DK3/13. DD 1959.
Source signalling conversion panel for P.O. lines.
Broadcasting House Extension. 1959. OBSOLESCENT.
483mm x 89mm panel mounting 2 UN1/6 transistor relay
switching units and U links and tag block for remote

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