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Print pages (PDF 48 kb)
 | | Electrical specifications
| Model |
DPR4-4LB(L) |
DPR4-4LB(H) |
DPR8-4LB(L) |
DPR8-4LB(H)
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Operating frequency
band, MHz |
30-40 |
38-48 |
30-40 |
38-48
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Insertion loss
(adjustable) not more, dB |
1,5
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Frequency separation
TX/RX (min), MHz |
0,8 |
0.8 |
0.6 |
0.6
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| Impedance, Ohm |
50 |
50 |
50 |
50
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| Isolation, not less, dB |
75 |
75 |
75 |
75
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| VSWR, not more than |
1,5 |
1.5 |
1.5 |
1.5
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Input power, not
more, W |
not more than 200
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| Temperature range, В°C |
from -30 to +60
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| Cavity electrical length |
1/4О»
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Mechanical specifications
| Model |
DPR4-4LB(L) |
DPR4-4LB(H) |
DPR8-4LB(L) |
DPR8-4LB(H)
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| Diameter, mm (ins.) |
116 (4") |
116 (4") |
200x200(8"x8") |
200x200(8"x8")
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| Weight, kg |
38 |
34 |
67.5 |
61
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| Connector |
N-female
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| Mount to 19-inch rack |
yes
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| Length/Width/Depth, mm |
250x460x2780 |
250x460x2480 |
400x480x2780 |
400x480x2480
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Activity in wrongly forgotten, due to outdated communication equipment, "LOW BAND" range encouraged us to develop highly effective filters and duplexers for this range. And now we are ready to suggest you our new product band pass-reject duplex filter. It is assembled from full-size quarter-wave 4" diameter cavities. This enables to use it in repeaters with various frequency separation TX/RX. It retains steady characteristics at any temperature disturbance thanks to thermostable design. Faintly defined band pass characteristic will protect repeater from interference influence, especially from 27 MHz and at distant radiopropagation.
Typical duplexer response curves
DPR4-4LB
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DPR8-4LB
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