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The Reception Set R107 was a receiver
designed for CW and RT reception and was usually employed in conjunction
with Wireless Sets No12 and 33.
The Frequency Range was 1.2 to 17.5 Mc/s in
three overlapping bands.
Band 1 : - 17.5 to 7 Mc/s.
Band 2 : -
7.25 to 2.9 Mc/s.
Band 3 : - 3.0 to 1.2 Mc/s.
The set was
designed for operation from a 12 volt accumulator or alternatively
from 100/250 volts (50 c/s AC).
Change over from DC to AC operation was
accomplished by means of a two-way switch in the power-chassis.
The
complete apparatus comprises of three separate chassis units i.e. RF,
IF/AF and Power. |
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These are mounted on a steel framework
and a sheet steel panel carries the receiver controls.
Connection
between the three units is achieved by means of tag-boards.
Circuit
Description : - A nine valve (eight plus rectifier) super-heterodyne
circuit is employed.
The valves were indirectly heated (6.3v heaters) and
were fitted with International Octal bases.
There are four RF
pentodes (ARP34), four double-diode-triodes (AR21) and a full wave
rectifying valve (6x 5G).
The circuit was arranged as follows : -
An RF
stage was coupled by means of a band-pass filter to a mixer stage with a
separate 1st Local Oscillator. |
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The intermediate frequency signal (465
kc/s) thus produced was amplified by two IF stages which were followed by
the combined signal detector AVC and AF stage.
An
output stage and Beat Frequency Oscillator complete the circuit.
Power
Consumption : - DC 3.25 amps at 11.5 volts. AC 50 volt-amps. |
Manual and
Circuit
available
Details Below
On Paper CD or Download
Click Here |
| The R107
Receiver Manual Contains the
Following :-
GENERAL DESCRIPTION
Frequency Range
Performance
Power Supply
Aerial
Circuit and Controls
Panel Sockets
Panel Jacks
Construction
Weight and Dimensions
WORKING INSTRUCTIONS
Preliminary
Valves used
Connecting up power supply
Battery operation
A.C. mains operation
Operating the receiver
For R.T.
For C .W. reception
Use of the crash limiter
MAINTENANCE
General notes on maintenance
Test figures
Receiver
Receiver test panel readings
Point to point resistance tests
Voltage tests
Receiver sensitivity tests
General
2nd A.F. stage
1st A.F. stage
2nd 1.F. stage
1st I.F. stage
F.C. stage
Overall Sensitivity
Beat frequency oscillator
Location of faults
A.F. and preceding stages
R .F. Unit
Special note on valve faults
Inspection of wiring and coils
Receiver faults
Information for guidance of R.A.0.C . workshops.
Notes on alignment of circuits
Dismantling Instructions
Special receiver faults
DIAGRAMS.
Reception Sets R.107 Circuit diagram.
Front view of panel.
Plan view of interior.
Connections to Sender No. 12
Connections to Sender No.33
PLATES:
Front Panel
Plan of Interior
Tuning Unit
Underside of R.F. Chassis
Underside of I.F. Chassis
Interior of B.F.O. Unit.
Underside of Power Unit
COMPONENTS LIST
Condensers
Resistors
Inductors
Switches
Transformers
Miscellaneous
Valves
Coding for Condensers and Resistances
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Manual and
Circuit
available
Details Below
On Paper CD or Download
Click Here |
|
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The R107 Receiver Manual £10.00 70 pages Plus Post &
Packing £3.80
Total = £13.80
(
For UK and Overseas Payment Options See Below )
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We do all we can to provide
the very best that is available for you.
But in the unlikely event that any data should not be as you expected.
A refund is always available. Kind Regards Allen and Alanna. |
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