unit AM14/48 (Mechanically and Electrically similar to
AM14/31. But without EQ4/1). DD 1980.
AM140050 AM14/50
Wide-band
RF
Amplifier.
Designed
for
use
in
aerial
amplification and distribution system. Frequency response
to.5dB 100kHz to 30MHz. Input and output Z 50Q unbalanced.
Insertion gain 15.5 to.5dB, maximum output +33dBm. Noise
figure ~6dB above 200kHz. Second order intercept ~103dBm,
third order intercept ~48dBm. Power requirements 20V
550mA. PCB 254mm x 67.3mm mounted on PN1/27J. Supersedes
AM14/6. BBC Receiving Station Caversham 1981.
AM140051 AM14/51A-C
Band
II
Power Amplifier.
Band
II
Power Amplifier Bay
housing 4 AM14/45 500 watt amplifier modules and associated
power supplies and combiners etc. The three options
available are:
AM14/51 A
single service
2kw
B
dual
service
2 x
1kw
C
four
service
4 x 500w
Power requirements 190-260v AC twice, approx 2.2kva twice.
44U 19" Bay. Sub-units AM14/45 others to follow. EDI
10460(1) SEP 83. DDHB 5.161(82)Part I. DD 1981.
AM140052 AM14/52
Droitwich
Head
Amplifier.
200kHz
Droitwich
Tuned
Head
Amplifier with bandwidth of t3-5kHz to match rod aerial
with 75 ohm input of RC3/13. Phantom powered from RC3/13.
Power requirements 12 Volts 8mA. Parent equipment RC3/13.
S CPD 1981.
AM140053 AM14M/53
Band II RF Power Amplifier.
This assembly comprises four
AM14/45 500W Power Amplifier modules, housed in a bay
mounting unit and sui table for forced-air cooling. All
connections are accessible from the front and the
individual modules slide forward from the chassis for
maintenance. Power requirements 4 x (28 volts at 40A). 8U
high x 19" Rack mounting. Parent equipment AM14/51. Sub-
units AM14/45. DD 1981.
AM140054 AM14/54 A&B
Band
II
Power
Amplifier.
Band
II
Power Amplifier
Bay,
similar to AM14/51 series, but only partially equipped.
Two options are available:
AM14/54A Single Service 1 kW
AM14/54B Dual-Service 2 x 500 W
Power requirements 190 - 260 V ac 2.2 KVA once. 44U x
600 mm 19" Bay. Sub-units AM14/45, PS2/281, PA1/121 A&B,
FL5/13A, CD3/43, PA1/120. MN1/24, FL4/72. EDI 10460(1)SEP
83. DDHB 5.161(82)Part I. DD 1982.
AM140055 AM14/55
Band
II
Test
Amplifier.
This
amplifier
is
an AM14/ 48,
modified for use as a broad band test amplifier, 88-108MHz.
The modifications increase the input sensitivity to OdBm,
and add precision leveling and an output pad. Pout (min)
3 watts. Power requirements 190-260 VAC 40VA. CH1/64D.
Sub-unit AM14/34. DD 1982.
AM140056 AM14/56
Band
II
Test
Amplifier.
AM14/45
broad
band
amplifier,
modified for use as part of test equipment for AM14/45
repair
or
manufacture.
Modified
to
produce
a
constant
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