Waveguide Direct Reading Variable Attenuators
General Description:
Series 525 direct reading waveguide attenuators are available in waveguide sizes from WR284 thru WR 28. All models come with calibrated dials in 1 dB increments and the dial accuracy is equivalent to the attenuation vs frequency specifications or better. For greater accuracy over narrower bands or models with more attention, please feel free to contact us.
General Specifications:
- Attenuation Range.....10 dB models, 20 dB models
- VSWR.....1.15 Max, 1.25 for WR & WR 28
- Insertion Loss.....0.5 dB Max
- Flange Type.....Cover Standard
- Finish.....per MIL-C-22750
- Form.....0-2905
Options:
- For brass material, add B to basic model number.
- For cover/choke flange, add -1.
- For choke/choke flange, add -2.
- For CPR or other flange, precede series number with flange type. Ex: CPR137G-525-10
| Frequency Range (GHz) |
Waveguide Size |
Atten Range(dB) |
Atten vs Frequency (+/-dB) |
Power (Avg.) |
Length (In) |
Model No. |
| 2.60-3.95 |
WR284 |
10
20
|
1.0
2.0
|
10.0
10.0
|
13.50
13.50
|
284-525-10
284-525-20
|
| 3.30-4.90 |
WR229 |
10
20
|
1.0
2.0
|
8.0
8.0
|
12.00
12.00
|
229-525-10
229-525-20
|
| 3.95-5.85 |
WR187 |
10
20
|
1.0
2.0
|
5.0
5.0
|
10.0
10.0
|
187-525-10
187-525-20
|
| 4.90-7.05 |
WR159 |
10
20
|
1.0
1.7
|
5.0
5.0
|
9.00
9.00
|
159-525-10
159-525-20
|
| 5.85-8.20 |
WR137 |
10
20
|
1.0
1.5
|
4.0
4.0
|
8.00
8.00
|
137-525-10
137-525-20
|
| 7.05-10.0 |
WR112 |
10
20
|
1.0
1.5
|
1.0
1.0
|
4.75
4.75
|
112-525-10
112-525-20
|
| 7.00-11.0 |
WR102 |
10
20
|
1.0
1.5
|
1.0
1.0
|
4.25
4.25
|
102-525-10
102-525-20
|
| 8.20-12.4 |
WR90 |
10
20
|
1.0
1.5
|
1.0
1.0
|
3.50
3.50
|
90-525-10
90-525-20
|
| 10.0-15.0 |
WR75 |
10
20
|
1.0
1.5
|
1.0
1.0
|
3.25
3.25
|
75-525-10
75-525-20
|
| 12.4-18.0 |
WR62 |
10
20
|
1.0
2.0
|
1.0
1.0
|
3.00
3.00
|
62-525-10
62-525-20
|
| 18.0-26.5 |
WR42 |
10
20
|
1.5
2.0
|
1.0
1.0
|
2.63
2.63
|
42-525-10
42-525-20
|
| 26.5-40.0 |
WR28 |
10
20
|
1.5
2.0
|
1.0
1.0
|
2.40
2.40
|
28-525-10
28-525-20
|
Please contact us or email us if you cannot find what you're looking for or any other questions you may have.
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