2115_ Gee_MkII_Tropical.pdf - VMARSmanuals

7. With R.F. units, type 24B and 25B
of which a panel view is shown in fig. 2
any one of five preset spot frequencies in
the band may be selected by a switch.
The R.F. units, type 26B and 27B, panel
views of which are shown in fig. 3, may be
continuously tuned over the radio frequency
ranges by a tuning dial. The following
details give the spot frequencies to which
the switch positions on R.F. units, type 24B
and 25B are normally tuned on leaving
the factory :-
Switch RE unit RF. unit
position type 24B type 258
Mc/s
Mc/s
8. The remainder of the receiver accommodates
a five-stage I.F. amplifier, second
detector, video amplifier, and cathode follower
output stage on the main chassis ;
and on a sub-chassis, a power unit which ,
supplies power to the receiver and the
indicator.
TABLE I
S~ores : Dimensions
Unit Ref. . Weight
I j length Width Hcighr
Receiver, type R.3645 .. 10DB:8477 ' 35 lb. ! 18 in. 1 9 in. 8 in.
I
Indicating unit, type 266 10QBi6383 ! 36 ib. 18 in. 9 in. 12 in.
!
Aerial, aircraft, type 379 10B 16026 - - - -
Control panel, type 3 . .; 5U, 1969 20 lb. 1 , 12in. i 12in. ; 12in.
FROM
R.F
UNIT
OUTPUT
TO
l NDICATOR
+ 0
I ST
1.F:
VI
-
r
- CATHODE
'IDE0- FOLLOWER
.
1
2 ~ 0 3 RD.
~ T H
~ T H
- - IF
- If
OET'
IF
V4
v6
Va
V2
-
V3
v5
.
N EC
KI
H .T.
RECTIFIER
POWER
INPUT
VOLTAGE
STABlLlSER
Fig. 5.-Block
schematic diagram of nceivw.