Model 49
High Power Fixed Coaxial Attenuators
Convection Cooled
dc to 8.5 GHz
150 Watts
CALIBRATION:
Insertion loss test data supplied at 0.05,
4.0, and 8.5 GHz. Other test data can be provided at
additional cost.
CONNECTORS:
Type N connectors per MIL-STD-348
interface dimensions - mate nondestructively with MIL-C-
39012 connectors.
Connector Options
3
4
Type/Description
Type N, Female
Type N, Male
Features
o
o
o
Quality connectors with special high temperature
support beads.
Designed to meet environmental requirements of
MIL-A-3933.
Flexible Mounting Position -
The units may be
mounted in horizontal (fins up) or vertical position.
CONSTRUCTION:
Aluminum alloy body, stainless steel
connectors; gold plated beryllium copper female contacts or
stainless steel male contacts. (-LIM option uses
different connector and contact materials)
WEIGHT:
1,450 g (3 lbs, 3 oz.) maximum
PHYSICAL DIMENSIONS:
Specifications
NOMINAL IMPEDANCE:
50
Ω
FREQUENCY RANGE:
dc to 8.5 GHz
MAXIMUM DEVIATION OVER FREQUENCY (dB):
Nominal
ATTN (dB)
3, 6
10, 20
30
40
+
+
+
+
dc-4 GHz
49
49-LIM
0.40
0.40
0.40
0.50
---
+ 0.70
+ 0.70
+ 0.70
+
+
+
+
4 - 8.5 GHz
49
49-LIM
0.75
0.75
0.75
1.00
---
+ 1.25
+ 1.75
+ 1.75
MAXIMUM SWR:
Frequency (GHz)
dc - 4
4 - 8.5
SWR
1.25
1.35
Connector
N Male
N Female
NOTE:
DIM A
22.9 (0.90)
15.0 (0.59)
3rd ORDER INTERMODULATION (49-XX-XX-LIM ONLY):
Reflected Levels (IM3), -95 & Through Levels (IM3), -110
dBc with two input signals @ 869 MHz and 891 MHz with
average carrier power levels of +43 dBm each.
POWER RATING
(mounted horizontally or
vertically):
150 watts
average (unidirectional)
to 35°C
ambient temperature, derated linearly to 15 watts @ 125°C.
5 kilowatt
peak
(5
µsec
pulse width; 1.5% duty cycle).
Maximum power rating into output port is 25 watts average.
POWER COEFFICIENT:
<0.0001 dB/dB/watt
TEMPERATURE COEFFICIENT:
<0.0004 dB/dB/°C
TEMPERATURE RANGE:
-55°C to 125°C
All dimensions are given in mm (inches) and
are maximum, unless otherwise specified.
MODEL NUMBER DESCRIPTION:
Example:
49 - XX - XX
-
LIM
1st digit is input side
2nd digit is output side
*Add -LIM for Low Intermodulation option. Option only available in 10, 20,
30, and 40 dB and is not available through Express.
Basic Model
Number
Attenuation
Value (dB)
IM Option*
Connector Options
61
5305 Spectrum Drive, Frederick, MD 21703-7362 TEL: 301-846-9222, 800-638-2048
web: www.weinschel.com email: sales@weinschel.com
Fax: 301-846-9116
1/28/04
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