C0020022 C02/22
C0020023 C02/23A
C0020024 C02/24
C02/24A
C0020025 C02/25
C0020026 C02/26
C0020027 C02/27
C0020028 C02/28
C0020029 C02/29
5.2V d.c. CH1/64 printed board with runners and screen.
DD 1978. DDMI 5.376(80).
Frequency Synthesiser. Provides a frequency selected by
external program to drive the Technics SPlO turn table.
Power requirements +5V 300mA. 2U unsupported card. Parent
equipment RP2/10. DD 1978.
VHF Frequency Converter. Same as C02/23 but with improved
layout. Power requirements same as C02/23. Dimensions
same
as
C02/23.
Supersedes
C02/23.
Parent
equipment
TM4L/1. DDMI 5.373(79). DD 1979.
Band 11 Frequency Converter. Accepts a 10.7MHz signal from
an MD3/13A and converts it to a frequency in the range
87.5MHz to 104.5MHz. Input level -10dBm. Output frequency
is determined by choice of crystal frequency. Output power
can be set in range 250mW-1W. If option 1 is selected
output power can be set in range 1W-4W. Power requirements
12-15V at 500mA. STD. BMM 4U printed board. DDMI 5.386
DD 1980.
Band 11 Frequency Converter. Accepts 10.7MHz signal from
an MD3/13A and converts it to a frequency in the range 87.5
to 104.5MHz. Input level -10dBm. Output frequency is
determined by choice of crystal frequency. Output power
can be set in range 250mW-4W. Power requirements 12-15
volts at 500mA. BMM 4U printed Board. Supersedes C02/24
option 1. DD 1980.
Frequency Converter. Converts RC4M/8A to receive signals
on 870MHz approximately. Power requirements +12 volts DC
at
90mA.
Printed
Circuit
Board
133
x
86mm.
Parent
equipment RC4M/8 and RC4M/8A. DD 1982.
UHF Frequency Converter. Transmit frequency converter
module t for converting a 105MHz FM IF signal to the 870-
970MHz Band. Part of TM3M/8B. Power requirements 12V DC.
250mm x 145mm pcb. Parent equipment TM3M/8C. DD 1983.
Frequency Converter. Down conversion from UHF channel to
an 1. F. of 40.75 MHz vision carrier. Provides output for
I.F. amplifier AM14/565. Power requirements :t12 V.
CH1/86. Parent equipment DM1M/506. DD 1984.
Frequency Converter. Provides 1 kHz and 440 Hz sinewaves
from a 5 MHz input. Power requirements :!:12 V. CH1/65A.
Parent equipment PA1M/135. DD 1984.
2.912 MHz Up~Converter. This converter is for use as part
of the Digital Stereo Sound with Terrestrial Television
Modulator. The unit takes the incoming 2.912 MHz modulated
carrier signalt and mixes it with a local oscillator signal
at 9.464MHz to give a modulated carrier signal at the
required intercarrier frequency of 6.552 MHz. The 9.464
MHz local oscillator signal is generated on-boardt using a
voltage-controlled oscillator. Mixing is performed using a
Hatfie1d Mixer (Type 1755). Band-pags filtering is
provided to remove the local oscillator and 12.376 MHz
upper image signals. The output carrier signal at 6.552
54

54