Tribune telephones are available in 10 pps pulsing, MF4 signalling and dual signalling
models with earth or timed break recall facilities. All models are for table mounted use
and are similar in appearance. The facilities offered are as follows:-
MF signalling models (Will be superseded by Dual Signalling models)
Tele 9401AR, MF signalling, earth loop or timed break recall, secrecy button, bell.
Normally supplied set for earth recall, may be converted to timed break recall by shifting
link accessed via slot in base of telephone.
Tele 9402AR, as 9401AR but with tone caller instead of bell.
Tele 9403AR, as 9401AR but with inductive coupler receiver inset to suit users of certain
types of hearing aid.
Dual signalling models
Tele 9801AR, 10 pps or MF4 signalling, earth loop or timed break recall, 31 digit last
number redial memory, secrecy, bell. Normally supplied set to 10 pps signalling with earth
recall but may be set to MF4 signalling with earth recall or MF4 signalling with timed
break recall by adjusting the customer accessible slider switch on the base. When set to
10 pps signalling the telephone offers mixed signalling facilities.
Tele 9802AR, as 9801AR but with tone caller instead of bell.
Tele 9803AR, as 9801AR but with inductive coupler receiver inset.
Mixed signalling is the facility whereby a call may be originated in the LD 10 pps mode
and continued for the duration of the call in the MF4 mode by pressing the * button to
access certain network based facilities.
Click here for later Tele 98XX models
Loop-disconnect pulsing models (Superseded by Dual Signalling models)
9901R, LD 10 pps signalling, earth recall, secrecy button, 21 digit last number redial
Tele 9902R, as 9901R but with tone caller instead of bell.
Tele 9903R, as 9901R but with inductive coupler receiver inset to suit users of certain
types of hearing aid.
NB. On all models tone callers have a volume control only, bells have a volume
control with an off position.
Made by TMC Ltd (Marked GNA on base) and Denis Ferranti Ltd (Marked DFM on base)
Tribune telephones are approved as supplied under approval numbers:-
Tele 9401 S/1000/3/F/500318 or S/1000/3/F/500331
Tele 9402 S/1000/3/F/500319 or S/1000/3/F/500322
Tele 9801 S/1000/3/G/500643
Tele 9802 S/1000/3/G/500638
Tele 9803 S/1000/3/G/500639
Tele 9901 S/1000/3/F/500333 or S/1000/3/F/500321
Tele 9902 S/1000/3/F/500334 or S/1000/3/F/500323
||BT Item code
|Telephone 9401 AR White
|Telephone 9401 AR Grey
|Telephone 9402 AR White
|Telephone 9402 AR Grey
|Telephone 9801 AR White
|Telephone 9801 AR Grey
|Telephone 9801 AR Red
|Telephone 9802 AR White
|Telephone 9802 AR Grey
|Telephone 9802 AR Red
|Telephone 9803 AR White
|Telephone 9803 AR Grey
|Telephone 9803 AR Red
These telephones all have a REN of 1.
Idle - Normal capacitor loop, additionally Tribunes 99XX & 98XX draw on hook current
(typically 20 micro amps) to maintain last number re-dial memory. This may appear to give
apparent 'Low Loop' line test conditions.
Seized - Normal off-hook press button telephone loop. The electronic keypad and
transmission circuitry may give high resistance tele-loop line test conditions as with
other press button telephones.
Bell volume control is achieved by varying the travel of the bell plunger, this can result
in bell tinkle due to line disturbances if the volume control is set to 'low'. On certain
systems (typically those with electronic ringing generators) a louder ring may be obtained
if the control is set at the mid point instead of 'loud'.
Pressing the 'S' button will cut off outgoing transmission on all models without affecting
incoming speech except for Tribunes 94XX made by DFM Ltd, on these the level of incoming
speech is reduced whilst the 'S' button is held down.
Last number redial memory will be erased on LNR models if the telephone is disconnected
from line for typically more than 5 minutes, there is no provision for memory retention
All Tribunes have good immunity against RFI from 100kHz to 10Mhz.
Telephones 9401AR and 9402AR can be converted to Time Break Recall (TBR). On
the underside of the telephone is a small plug, in a recess, which has makings
'E' and 'T'. The plug must be removed, turned 180 degrees and replaced so
that the raised lug of the plug is now nearest the 'T'.
All standard Tribune features, but with incoming speech amplifier, lamp
signalling. inductive coupler. Available
in Charcoal grey.
Tribune E2 (shown right)
As the E1 but with an extra earpiece.
Available in Polar white.
This model has an outgoing speech amplifier.
Available in Polar White.