Direct Reading Attenuator, 2.0-18.0 GHz

This series of variable attenuators is our most popular type for direct reading attenuators. As in most of our units, it features a non-contacting method of varying attenuation, and calibration does not change with usage.
GENERAL CHARACTERISTICS
Direct Reading Models are furnished with dials individually calibrated in 1 dB increments. These units are flat with frequency.
Level Set Models are supplied with dials in degrees for reference. These units do not have attenuation vs frequency specifications. All level set models can he directly calibrated at a spot frequency; contact factory.
Special Models: Most units are manufactured to customer specifications. Accuracies can he quoted for your exact attenuation range and frequency hand; contact factory.
Type N Female Connectors are standard. For SMA female connectors, suffix model number with S.
Panel Mounting is standard on Forms 0-1028 and 0-1069. Form 0-701 can be changed to Form 0-1096 by preceding model number with P. When panel mounting these units, turn the shaft fully clockwise ( 0 dial position) and after removing the dial in the dial holder, mount the unit behind the panel with the shaft protruding thru. Then set screw the dial hub to the shaft. The dial can be slipped to align the 0 with the index line ( a separate index plate is furnished) and calibration accuracy is perfectly maintained. Because of this arrangement, the units can be oriented in any position behind the panel, while the index plate can be mounted to the panel anywhere on the periphery of the dial.
GENERAL SPECIFICATIONS
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Frequency bands from 2.0-18.0 GHz
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Optional dial lock on P version (Form 6921)
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Many models exhibit flat attenuation vs frequency characteristics
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Zero backlash
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0.1 dB or better resettability
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10 watts average power, 5 kW peak
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Low insertion loss: 0.5 dB max for models up to 60 dB l.0 dB max for models above 60 dB
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Type Nor SMA female connectors
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Low VSWR - l.50 max
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Non-contacting
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Directly calibrated or degree dial
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Counter clockwise rotation increases loss
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Stop at low and high loss positions
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Material: Body - Aluminum Connectors - Stainless Steel
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Finish: ARRA Blue per MIL-C-22750
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*Model numbers indicate Type N connectors. For SMA connectors, suffix model number with S. Ex: 6684-10S to indicate panel- mounted version, precede
model number with P. Ex: P6684-10
**Units 12.4-18.0 GHz are available with SMA connectors only
TYPICAL DIRECT READING MODELS |
Frequency Range (GHz)
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Attenuation Range (dB)
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Insertion Loss (Max dB)
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Standard Form Factor
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Model No. *
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2.0-3.0 |
15 |
2.00 |
0-701-2 |
4684-20G |
2.2-2.3 |
20 |
0.50 |
0-701-2 |
F4684-20 |
2.6-3.0 |
10 |
0.50 |
0-701-2 |
F4684-10 |
2.9-3.1 |
20 |
0.50 |
0-701-2 |
A4684-20 |
30 |
1.00 |
0-701-2 |
F4684-30 |
50 |
1.50 |
0-701-2 |
F4684-50 |
3.0-3.5 |
10 |
0.25 |
0-701-2 |
G4684-10 |
20 |
0.50 |
0-701-2 |
G4684-20 |
3.5-4.5 |
10 |
0.60 |
0-701-2 |
4684-10G |
3.7-4.2 |
20 |
0.50 |
0-701-2 |
B4684-20 |
30 |
0.75 |
0-701-2 |
G4684-30 |
40 |
1.50 |
0-701-2 |
F4684-40 |
50 |
2.00 |
0-701-2 |
G4684-50 |
3.7-6.5 |
30 |
2.00 |
0-701-2 |
F4-5684-30 |
3.8-4.0 |
50 |
1.50 |
0-701-2 |
F4684-50A |
3.8-6.0 |
20 |
1.00 |
0-701-2 |
G4684-20 |
3.9-4.1 |
100 |
2.00 |
0-1069-2 |
F4-5684-100 |
3.9-4.2 |
30 |
1.50 |
0-701-2 |
F4-5684-30A |
4.0-4.5 |
50 |
1.25 |
0-701-2 |
5684-50F |
4.0-5.0 |
20 |
0.50 |
0-701-2 |
F5684-20 |
4.2-4.4 |
20 |
0.20 |
0-701-2 |
5684-20G |
40 |
0.75 |
0-701-2 |
F5684-40 |
4.4-4.8 |
60 |
1.50 |
0-701-2 |
5684-60F |
4.4-5.0 |
70 |
1.75 |
0-1069-2 |
5684-70F |
4.5-5.0 |
20 |
0.25 |
0-701-2 |
G5684-20 |
4.8-5.2 |
40 |
0.30 |
0-701-2 |
5684-40F |
4.9-5.1 |
30 |
0.50 |
0-701-2 |
A5684-30F |
5.0-8.0 |
30 |
1.50 |
0-701-2 |
5684-30G |
5.0-6.0 |
50 |
1.50 |
0-701-2 |
G5684-50 |
5.1-5.9 |
30 |
1.00 |
0-701-2 |
G5684-30 |
5.2-5.9 |
100 |
2.00 |
0-1069-2 |
F5684-120 |
5.2-5.8 |
20 |
0.50 |
0-701-2 |
A5684-20 |
5.4-5.9 |
70 |
1.75 |
0-1069-2 |
F5684-70 |
100 |
2.00 |
0-1069-2 |
F5684-100 |
5.4-5.8 |
80 |
2.00 |
0-1069-2 |
F5684-80 |
5.5-6.1 |
60 |
1.50 |
0-701-2 |
F5684-60 |
5.6-5.9 |
50 |
0.50 |
0-701-2 |
F5684-50 |
70 |
1.00 |
0-1069-2 |
5684-70G |
5.9-6.4 |
20 |
0.25 |
0-701-2 |
B5684-20 |
30 |
0.50 |
0-701-2 |
F5684-30 |
40 |
1.00 |
0-701-2 |
G5684-40 |
60 |
1.50 |
0-701-2 |
5684-60G |
6.2-6.4 |
100 |
1.00 |
0-1069-2 |
G5684-100 |
6.5-7.0 |
30 |
0.50 |
0-701-2 |
A5684-30 |
7.1-8.4 |
40 |
1.00 |
0-701-4 |
F6684-40 |
7.2-7.8 |
20 |
0.50 |
0-701-4 |
F6684-20 |
40 |
0.50 |
0-701-4 |
6684-40F |
50 |
1.00 |
0-701-4 |
6684-50F |
7.7-8.4 |
60 |
2.00 |
0-701-4 |
6684-60F |
7.7-7.9 |
50 |
0.50 |
0-701-4 |
6684-50G |
7.8-8.4 |
30 |
0.50 |
0-701-4 |
F6684-30 |
7.9-8.4 |
20 |
0.25 |
0-701-4 |
6684-20G |
40 |
0.50 |
0-701-4 |
6684-40G |
50 |
1.00 |
0-701-4 |
F6684-50 |
8.0-10.0 |
30 |
1.00 |
0-701-4 |
G6684-30 |
8.1-8.4 |
70 |
0.50 |
0-1028-2 |
6684-70F |
8.2-8.4 |
60 |
1.00 |
0-701-4 |
F6684-60 |
8.5-9.7 |
40 |
1.00 |
0-701-4 |
G6684-40 |
8.5-9.5 |
100 |
3.00 |
0-1028-2 |
6684-100F |
8.7-10.2 |
60 |
1.50 |
0-701-4 |
6684-60G |
8.7-9.5 |
70 |
1.00 |
0-1028-2 |
6684-70G |
9.0-10.0 |
50 |
1.00 |
0-701-4 |
G6684-50 |
100 |
2.00 |
0-1028-2 |
6684-100G |
9.1-9.4 |
50 |
0.50 |
0-701-4 |
A6684-50 |
9.2-9.5 |
100 |
2.00 |
0-1028-2 |
6684-120F |
9.4-9.7 |
100 |
1.50 |
0-1028-2 |
F6684-100 |
9.5-10.5 |
30 |
1.00 |
0-701-4 |
6684-30G |
9.6-9.8 |
100 |
1.00 |
0-1028-2 |
G6684-100 |
10.9-12.2 |
50 |
2.00 |
0-701-4 |
B6684-50 |
11.7-12.2 |
40 |
0.50 |
0-701-4 |
A6684-40 |
12.7-13.3 |
50 |
1.00 |
0-701-4 |
F9684-50 |
14.0-14.5 |
30 |
0.20 |
0-701-4 |
F9684-30 |
50 |
1.00 |
0-701-4 |
G9684-50 |
14.4-15.3 |
100 |
1.50 |
0-1028-2 |
F9684-100 |
15.0-17.0 |
50 |
1.00 |
0-701-4 |
9684-50G |
15.5-16.5 |
30 |
1.00 |
0-701-4 |
G9684-30 |
15.7-16.2 |
40 |
0.50 |
0-701-4 |
F9684-40 |
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DIRECT READING OCTAVE BAND MODELS |
Frequency Range (GHz)
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Attenuation Range (dB)
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Attenuation vs (Freq ±dB)
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Standard Form Factor
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Model No. *
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2.0-4.0 |
10 |
1.25 |
0-701-2 |
4684-10F |
4.0-8.0 |
10 |
0.60 |
0-701-2 |
5684-10F |
20 |
1.00 |
0-701-2 |
5684-20F |
30 |
2.50 |
0-701-2 |
5684-30F |
5.4-11.0 |
10 |
1.00 |
0-701-4 |
5-6684-10F |
20 |
1.50 |
0-701-4 |
5-6684-20F |
7.0-11.0 |
10 |
0.50 |
0-701-4 |
6684-10F |
20 |
1.00 |
0-701-4 |
6684-20F |
30 |
2.00 |
0-701-4 |
6684-30F |
8.0-12.4 |
10 |
0.50 |
0-701-4 |
6684-10X |
20 |
1.00 |
0-701-4 |
6684-20X |
30 |
2.00 |
0-701-4 |
6684-30X |
12.4-18.0 ** |
10 |
0.50 |
0-701-3 |
9684-10FS |
20 |
1.00 |
0-701-3 |
9684-20FS |
30 |
1.00 |
0-701-3 |
9684-30FS |
40 |
2.00 |
0-701-3 |
9684-40FS |
UNCALIBRATED LEVEL SET MODELS |
Frequency Range (GHz)
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Attenuation Range (dB)
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Form Factor
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Standard Model No.
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2.0-4.0 |
10 |
0-701-2 |
4684-10 |
20 |
0-701-2 |
4684-20 |
3.0-4.0 |
10 |
0-701-2 |
4684-10X |
20 |
0-701-2 |
4684-20X |
30 |
0-701-2 |
4684-30X |
40 |
0-701-2 |
4684-40X |
50 |
0-701-2 |
4684-50X |
4.0-7.0 |
10 |
0-701-2 |
5684-10 |
20 |
0-701-2 |
5684-20 |
30 |
0-701-2 |
5684-30 |
40 |
0-701-2 |
5684-40 |
50 |
0-701-2 |
5684-50 |
70 |
0-1069-2 |
5684-70 |
80 |
0-1069-2 |
5684-80 |
90 |
0-1069-2 |
5684-90 |
100 |
0-1069-2 |
5684-100 |
5.4-11.0 |
10 |
0-701-4 |
5-6684-10 |
20 |
0-701-4 |
5-6684-20 |
30 |
0-701-4 |
5-6684-30 |
40 |
0-701-4 |
5-6684-40 |
50 |
0-701-4 |
5-6684-50 |
7.0-12.4 |
10 |
0-701-4 |
6684-10 |
20 |
0-701-4 |
6684-20 |
30 |
0-701-4 |
6684-30 |
40 |
0-701-4 |
6684-40 |
50 |
0-701-4 |
6684-50 |
60 |
0-701-2 |
6684-60 |
70 |
0-1028-2 |
6684-70 |
80 |
0-1028-2 |
6684-80 |
90 |
0-1028-2 |
6684-90 |
100 |
0-1028-2 |
6684-100 |
12.4-18.0 ** |
10 |
0-701-3 |
9684-10S |
20 |
0-701-3 |
9684-20S |
30 |
0-701-3 |
9684-30S |
40 |
0-701-3 |
9684-40S |
50 |
0-701-3 |
9684-50S |
60 |
0-701-3 |
9684-60S |
70 |
0-1028-1 |
9684-70S |
80 |
0-1028-1 |
9684-80S |
90 |
0-1028-1 |
9684-90S |
*Model numbers indicate Type N connectors. For SMA connectors, suffix model number with S. Ex: 6684-10S To indicate panel-mounted version, precede model number with P. Ex: P6684-10 ** Units 12.4-18.0 GHz are available with SMA connectors only.
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