PA17
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PA17/114,A
PA17/115,A
PA17/116
PA17/117
PA17/118
PA17/ll9
PA17/l20
PA17/l2l
PA17/l22
PA17/l23
PA17/l24
PA17/l25
PA17/l26
PA17/l27
PA17/l28
1962/63. OBSOLESCENT.
Amp. C/O and Mise. Relays used on DK4/6 and DK4/6A.
PA17/ll4A incorporates AM relay for cubicle mic. 1962/63.
OBSOLESCENT.
Destination Telephone Relays for ringing and ring-receive
facilities for three lines for a Type C studio desk in
integrated television and sound premises. PA17/ll5A has a
buzzer cut relay for use where a cubicle programme mic. is
used.
Mounts
in
CH1/2l.
1962/63.
DD Spec 3.341.
OBSOLESCENT.
Outside Source Telephone Relays used in conjunction with
PA17/ll5 for ringing and ring-receive and sending cue
programme for two studio outside source control lines with
Type C equipment in integrated sound and television
premises. 1962/63. DD Spec 3.342. OBSOLESCENT.
Source Signalling Relays. Similar to PA17/ll2 but for two
wire system used in integrated sound and television
premises. 1962/63. DD Spec 3.343. OBSOLESCENT.
Used at
programme
William.
Ballachulish for remote
feeds in conjunction
1962/63. OBSOLESCENT.
swi tching of
with PA6/29
reserve
at Fort
Relays and synchronous timers for switching on two
transmitters at start of programme signals and off when
signals cease. 1962/63. OBSOLESCENT.
Telephone Relays used on BA9/25. 1962/63. DD Spec 3.372.
OBSOLESCENT.
Sequential Switching Relays used on BA9/26.
DD Spec 3.372. OBSOLESCENT.
1962/63.
Monitoring Relays used
DD Spec 3.372. OBSOLESCENT.
BA9/26.
1962/63.
on
Source Signalling Relays used on BA9/26.
DD Spec 3.372. OBSOLESCENT.
1962/63.
Source C/O
DD Spec 3.372.
Relays used
OBSOLESCENT.
BA9/26.
1962/63.
on
Prefade Monitoring Relays used on BA9/26.
DD Spec 3.372. OBSOLESCENT.
;.962/63.
Miscellaneous Relays used on
DD Spec 3.372. OBSOLESCENT.
BA2/9.
1962/63.
Line Changeover Relays for changeover of 6 separate
programme circuits using existing key panels and a three
position lever key. Employs remanent relays on RLP/3l.
1962/63. DD Spec 3.366. OBSOLESCENT.
Individual Talkback Relays used with mixer desks for

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