OS3
OS3/504
OS3/505
OS3/506
OS5M/501
OS5M/502
- 222 -
352MHz,
DD 1971.
in steps of 8MHz. CH1/64A, indexing 48, 76.
DD Spec 5.226. EDI 10154(1)OCT72. OBSOLESCENT.
Variable Frequency Oscillator used in EPll/50l as
replacement for OS2/ll. Has facility for very rapid
change of frequency. Printed wiring board. DD 1972.
DDMI 6.229. DDHB 6.104. EDI 10187(P)MAY73. OBSOLESCENT.
Offset Generator Oscillator, used in EP7/5l3. Contains 3
crystal oscillators operating at 24MHz, 32MHz and 40MHz;
these are used one at a time and have output power of 8mW.
CHl/l2A, with metal cover, pegs 49, 82. DD 1972.
DDMI 5.225. OBSOLESCENT.
Variable Frequency Oscillator used in EP14M/507. Provides
output of 399.25MHz tlOMHz, swept by internal generator.
CHl/68. DD 1972. OBSOLESCENT.
OS5 TRANSMITTER DRIVE OSCILLATORS
Provides a controlled frequency drive signal for the sound
transmitter at Winter Hill to reduce adjacent channel
interference in the service area of the ITA transmitter at
Moe1-y-Parc. PN3/23 with units on CH1/12A chassis.
DD 1965. WITHDRAWN.
Includes OS2/l9 or OS2/20, UNl/15A and 6.3V transformer to
make a precision
oscillator.
CHl/27, pegs 3, 27.
First
used VHF television transmitter at Cambridge. DD 1965.
DD Spec 12.23. OBSOLESCENT.
==========================================================================
OS5 Sub Group not available for new designs DD 1977.
OTl/l
OTl/2
OTl/3
OTl MISCELLANEOUS OUTFITS
Outfit, Microphone, KM54A. Includes Neumann Microphone
Type KM54A with Mains unit Type NKM, Microphone Cable
Neumann Type KC2. Windshie1d Neumann Type 218, Windshie1d
(BBC) to drawing RG14l90. Equaliser EQ6/1, Microphone
Adaptor MClB/3, Carrying Case CS2/3. DD 1958/59.
OBSOLESCENT.
Outfit, Microphone, C28. Includes Microphone, AKG Type
C28 with Power Pack AKG Type N28A, Cable AKG Type K28,
Cable AKG Type NF28, Mains Cable, and Attenuator AT2/6,
Adaptor MCIB/3, Carrying Case CS2/6. Later models have
re-designed power packs. DD 1958/59. OBSOLESCENT.
Split Band Carrier Equipment giving music channel of 100Hz

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