Frequency Ranges; Gr 25 Ltd St Specifications - Cobra GR-25LTD ST Operating Instructions Manual

GR25LTDST-English copy 6/21/99 12:00 PM

Frequency Ranges

The CO B RA GR 25 LTD ST tra n s ce i ver re p re s e nts one of the most adva n ced FM two - way ra d i o s.
This unit fe at u res adva n ced Phase Lock Loop (PLL) circ u i t ry providing co m p l e te cove rage of all
40 CEPT FM, 40 Ge rman FM and 12 AM CB channels.
CEPT Frequencies (EU)
Channel Channel
CB Freq. CB Freq.
Channel In MHz Channel In MHz
1 26.965 21 27.215
2 26.975 22 27.225
3 26.985 23 27.255
4 27.005 24 27.235
5 27.015 25 27.245
6 27.025 26 27.265
7 27.035 27 27.275
8 27.055 28 27.285
9 27.065 29 27.295
10 27.075 30 27.305
11 27.085 31 27.315
12 27.105 32 27.325
13 27.115 33 27.335
14 27.125 34 27.345
15 27.135 35 27.355
16 27.155 36 27.365
17 27.165 37 27.375
18 27.175 38 27.385
19 27.185 39 27.395
20 27.205 40 27.405
Channel
AM
CB Freq. CB
Frequencies Channel In MHz Channel
4 27.005 8
5 27.015 9
6 27.025 10
7 27.035 11
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German Frequencies (DE)
Channel Channel
CB Freq. CB Freq.
Channel In MHz Channel In MHz
41 26.565 61 26.765
42 26.575 62 26.775
43 26.585 63 26.785
44 26.595 64 26.795
45 26.605 65 26.805
46 26.615 66 26.815
47 26.625 67 26.825
48 26.635 68 26.835
49 26.645 69 26.845
50 26.655 70 26.855
51 26.665 71 26.865
52 26.675 72 26.875
53 26.685 73 26.885
54 26.695 74 26.895
55 26.705 75 26.905
56 26.715 76 26.915
57 26.725 77 26.925
58 26.735 78 26.935
59 26.745 79 26.945
60 26.755 80 26.955
Channel Channel
Freq. CB Freq.
In MHz Channel In MHz
27.055 12 27.105
27.065 13 27.115
27.075 14 27.125
27.085 15 27.135

GR 25 LTD ST Specifications

GENERAL
CHANNELS . . . . . . . . . . . . . . . . . . . . . . . 40 CH CEPT FM
40 CH GR FM
12 CH GR AM
FREQUENCY RANGE (CEPT FM). . . . . 26.965 TO 27.405 MHz
FREQUENCY RANGE (German) . . . . . 26.565 TO 26.955 MHz
FREQUENCY RANGE (German AM). . 27.005TO 27.135 MHz
FREQUENCY TOLERANCE. . . . . . . . . . 0.005 %
FREQUENCY CONTROL . . . . . . . . . . . . PLL (PHASE LOCK LOOP) SYNTHESIZER
OPERATING TEMPERATURE
RANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . -20° C TO + 55° C
MICROPHONE . . . . . . . . . . . . . . . . . . . . PLUG-IN DYNAMIC
INPUT VOLTAGE . . . . . . . . . . . . . . . . . . 13.2VDC nom.(positive or negative earth)
CURRENT DRAIN TRANSMIT: AM FULL MOD.,1.5A (MAXIMUM)
RECEIVE:SQUELCHED, 0.3A;FULL AUDIO
OUTPUT, 1.2A (NOMINAL)
SIZE 219 mm x 162 mm x 56 mm
(8-5/8"D X 6-3/8"W X 2-13/64"H)
WEIGHT . . . . . . . . . . . . . . . . . . . . . . . . . .1.8 kg (4 LBS.)
ANTENNA CONNECTOR . . . . . . . . . . . .UHF; SO-239
METER . . . . . . . . . . . . . . . . . . . . . . . . . . .ILLUMINATED;INDICATES RELATIVE
POWER OUTPUT, RECEIVED
SIGNAL STRENGTH
TRANSMITTER
POWER OUTPUT . . . . . . . . . . . . . . . . . .4 WATTS FM, 1 WATT AM
MODULATION . . . . . . . . . . . . . . . . . . . .FM,AM
FREQUENCY RESPONSE . . . . . . . . . . . .300 TO 3000 Hz
OUTPUT IMPEDANCE . . . . . . . . . . . . . .50 OHMS,UNBALANCED
RECEIVER
SENSITIVITY . . . . . . . . . . . . . . . . . . . . . . .LESS THAN 6 µV FOR 20 dB SINAD
SELECTIVITY . . . . . . . . . . . . . . . . . . . . . .6 dB @ 7 kHz, 60 dB @ 10 kHz
IMAGE REJECTION . . . . . . . . . . . . . . . . .80 dB, TYPICAL
ADJACENT-CHANNEL REJECTION . . .60 dB, TYPICAL
IF FREQUENCIES . . . . . . . . . . . . . . . . . .DOUBLE CONVERSION:1ST: 10.695 MHz
2ND:455 kHz
AUTOMATIC GAIN CONTROL (AGC) .LESS THAN 10 dB CHANGE IN AUDIO
OUTPUT FOR INPUTS FROM 10 TO 50,000 µV
RF GAIN RANGE . . . . . . . . . . . . . . . . . . .40 dB
NOISE BLANKER . . . . . . . . . . . . . . . . . . .RF TYPE
SQUELCH . . . . . . . . . . . . . . . . . . . . . . . . .A D J U S TA B L E ;THRESHOLD LESS THAN 1 µV
AUDIO OUTPUT POWER . . . . . . . . . . .4 WATTS
FREQUENCY RESPONSE . . . . . . . . . . . .300 TO 3000 Hz
DISTORTION . . . . . . . . . . . . . . . . . . . . . .LESS THAN 7% @3 WATTS @ 1000 Hz
BUILT-IN SPEAKER . . . . . . . . . . . . . . . . .8 OHMS,5W
E XTERNAL SPEAKER (NOT SUPPLIED) 8 OHMS; DISABLES INTERNAL SPEAKER
WHEN CONNECTED
PA SYSTEM
POWER OUTPUT . . . . . . . . . . . . . . . . . .4 WATTS INTO EXTERNAL SPEAKER
EXTERNAL SPEAKER FOR PA . . . . . . . .8 OHMS, 4 WATTS MINIMUM,
(NOT SUPPLIED)
(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)
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