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Lowpass Filters -
Cutoff Frequencies: 3 MHz to 100 MHz |
| page LC_F/HighPowerRF |
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Download a pdf file for printing
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| High Power
Lowpass Filters from 3
MHz to 100MHZ. available in 50, 200, 500 and 1000-Watt
Versions. These filters are designed to be used in any high
power application. |
 |
- Suitable for bandwidth
limiting on high power transmitters.
|
- Impedance invariant design is
compatible with all antenna tuners.
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- Meets applicable
requirements of MIL-STD-810E.
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Shape
Factor |
40 dB Min
@ x FC |
| A |
5.7 x FC |
| B |
2.3 x FC |
| C |
1.6 x FC |
| D |
1.4 x FC |
| E |
1.3 x FC |
Multiply the Cutoff Frequency by the Shape Factor
to find the 40 dB Frequency.
For Example:
Cutoff Frequency = 3MHz
with SHAPE FACTOR A.
40dB FREQUENCY = 3 MHz
x 5.7 = 17.1 MHz
or
with SHAPE FACTOR B.
40dB FREQUENCY = 3 MHz
x 2.3 = 6.9 MHz |
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BASIC SPECIFICATIONS:
-
Filter type = Lowpass Filter,
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Cutoff frequencies = 3 MHz - 100 MHz,
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Passband Insertion Loss < 0.3 dB, Typical
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VSWR better than 1.5 : 1 over Passband,
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Impedance is 50 Ohms,
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Rejection > 40 dB to 10 x Fc
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Power Handling = 50W, 100W, 500W, 1000W
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Mounting Brackets are supplied on all units
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Available connectors are
|
Cans are Cold Rolled Steel
Electro Tin plated or Hot Tin dipped.
 |
These filters are normally supplied with N Female connectors but can be
ordered with BNC connectors and SO-239 UHF connectors.
All the filters are supplied in Hermitically sealed Metal cases designed
for tough applications.
They resist shock, vibration, high and low temperature extremes, salt,
sand, dust and leakage.
The filters were designed to meet applicable requirements of
MIL-STD-810E (Environmental test Methods) and
MIL-F-14072D (Finishes for ground based Equipment) that are listed
below. |
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Environmental test methods |
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ALTITUDE: METHOD 500 3, PROCEDURE 1, 11, AND
III TEST ALTITUDE FOR PROCEDURE III IS 4,570 METERS AT 57 2 kPa. |
HIGH TEMPERATURE: METHOD 501-3, PROCEDURE I TO +70 C
NON-OPERATING, AND PROCEDURE 11 TO +60'C OPERATING. |
LOW TEMPERATURE: METHOD 502.3, PROCEDURE I TO -51 C
NON-OPERATING, AND PROCEDURE 11 TO -40"C
OPERATING. |
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TEMPERATURE SHOCK: METHOD 503.3, LOW TEMPERATURE -51 "C AND HIGH TEMP. +48"C. |
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SOLAR RADIATION: METHOD 505.3, PROCEDURE 1, HOT-DRY TEMPERATURE
CONDITIONS |
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RAIN: METHOD 506.3, PROCEDURE I |
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HUMIDITY: METHOD 507.3, PROCEDURE 111. |
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FUNGUS: METHOD 508.4. |
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SALT FOG: METHOD 509 3, PROCEDURE I |
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SAND AND DUST: METHOD 510 3 PROCEDURE I AND 11 |
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LEAKAGE (IMMERSION): METHOD 512.3, PROCEDURE 1, 2 HOURS AT 1.0 METER |
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VIBRATION: METHOD 514 4, CATEGORIES 1, 3 AND 8 (TABLE 514 4-AIII) |
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SHOCK: METHOD 516.4, PROCEDURE 1, V, AND VI. |
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ICING/FREEZING RAIN: METHOD 521.1. |
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ORDERING INFORMATION
SAMPLE:
10.5 MHz Cutoff, Shape Factor A,
1000 Watts, UHF Connectors
= HPLP-10P50-A-01K-U
SAMPLE: 3.25 MHz Cutoff,
Shape Factor E, 50 Watts, SMA Connectors
= HPLP-03P25-E-050-S
SAMPLE: 100 MHz Cutoff,
Shape Factor B, 500 Watts, Type N Connectors
= HPLP-100P0-B-500-N
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CUTOFF FREQUENCY |
SHAPE
FACTOR
(SEE GRAPH) |
40 dB
FREQUENCY |
|
3.0 MHz |
A |
17.1 MHz |
|
B |
6.90 MHz |
|
C |
4.80 MHz |
|
D |
4.20 MHz |
|
E |
3.90 MHz |
|
5.0 MHz |
A |
28.5 MHz |
|
B |
11.5 MHz |
|
C |
9.20 MHz |
|
D |
7.00 MHz |
|
E |
6.50 MHz |
|
10.0 MHz |
A |
57.0 MHz |
|
B |
23.0 MHz |
|
C |
16.0 MHz |
|
D |
14.0 MHz |
|
E |
13.0 MHz |
|
15.0 MHz |
A |
85.5 MHz |
|
B |
34.5 MHz |
|
C |
24.0 MHz |
|
D |
21.0 MHz |
|
E |
19.5 MHz |
|
20.0 MHz |
A |
114 MHz |
|
B |
46.0 MHz |
|
C |
32.0 MHz |
|
D |
28.0 MHz |
|
E |
26.0 MHz |
|
25.0 MHz |
A |
142 MHz |
|
B |
57.5 MHz |
|
C |
40.0 MHz |
|
D |
35.0 MHz |
|
E |
32.5 MHz |
|
30.0 MHz |
A |
171 MHz |
|
B |
69.0 MHz |
|
C |
48.0 MHz |
|
D |
42.0 MHz |
|
E |
39.0 MHz |
|
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CUTOFF FREQUENCY |
SHAPE
FACTOR
(SEE GRAPH) |
40 dB
FREQUENCY |
|
40.0 MHz |
A |
228 MHz |
|
B |
92.0 MHz |
|
C |
64.0 MHz |
|
D |
56.0 MHz |
|
E |
52.0 MHz |
|
50.0 MHz |
A |
285 MHz |
|
B |
115 MHz |
|
C |
80.0 MHz |
|
D |
70.0 MHz |
|
E |
65.0 MHz |
|
60.0 MHz |
A |
342 MHz |
|
B |
138 MHz |
|
C |
96.0 MHz |
|
D |
84.0 MHz |
|
E |
78.0 MHz |
|
70.0 MHz |
A |
399 MHz |
|
B |
161 MHz |
|
C |
112 MHz |
|
D |
98.0 MHz |
|
E |
91.0 MHz |
|
80.0 MHz |
A |
456 MHz |
|
B |
184 MHz |
|
C |
128 MHz |
|
D |
112 MHz |
|
E |
104 MHz |
|
90.0 MHz |
A |
513 MHz |
|
B |
207 MHz |
|
C |
144 MHz |
|
D |
126 MHz |
|
E |
117 MHz |
|
100 MHz |
A |
570 MHz |
|
B |
230 MHz |
|
C |
160 MHz |
|
D |
140 MHz |
|
E |
130 MHz |
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