Interprets position of switches on
for VHF Radio Control and Indication
UN090040 UN9 /40
"switches" all two way, one with eight poles, two with six
poles. Used in MIC switching system for fast changeover
between two pre-selected sources. CH1/64J. DD 1977.
mounted Lippa Issostatt changeover switches on 3U high ISEP
card with edge connection to 80 way UECL connector. SCPD
3U high ISEP card containing 3 x 8 way solid
state destination routing switches (unbalanced). Used on
CMCR EMX systems. SCPD 1977.
Diversity Switch Unit.
The unit is fed with the vision and
sound ouputs from two receivers and automatically selects
the better signal. Designed for use at transmitter sites
where propagation abnormalities require diversity
reception; incorporates automatic equalisation. PN3/54
with hinged rear cover carrying relay sub-assembly etc.
Sub-units EQ5/542, MA1/3, MA1/503, PS2/184, PS2/187G,
UN1/723, UN23/636. DD 1977. EDI 10325(P)OCT77.
BBC ISEP card. DD 1977.
Three Way Switch Unit used to switch between three 26 bit
parallel digital inputs i.e. 26 pole, 3 way digital switch
- TTL levels. 5U CDX unuspported card. DD 1977.
for use with Telephone
No.7l3. Not suitable for Telephone PO No.246 or handset
with differential transmitters. Printed circuit board
x 54mm. DD 1967. DD Spec 3.466. ACO
Telephone Dialling Unit for OB's used in conjunction with
UN10/34. Provides the OB with dialling facilities over
links and accepts incoming calls. Diecast box l78mm x
l27mm x 57mm. Power requirements +24V d.c. DD 1976.
DDMI 6.295(77). DDHB 6.138(76).
Telephone Dialling Unit.
Provides the OB with dialling
facilities over links and accepts incoming calls. As
UN10/33 but mounted on a CH1/65B chassis. Power
requirements -36V or -24V. CH1/65B. SCPD 1983.
UN100035 UN10/35,35A Telephone Interface Unit. Interfaces between incoming line
and telephone instrument 713 with P03 handset. Unit
includes a ring detector and ring out relay. Incorporates
a bell, receive amplifier and facilities for switching to
high impedance listen only. "A" version does not have high
impedance listen mode. Intended for use with UN10/36.
Telephone Line Selector Unit.
Provides ring detection and