DatasheetContiguous Diplexer
30-90 MHz & 90-520 MHz
SKU: 21-80-49
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The 21-80-49 is a diplexer having a negligible “dead” bandwidth between upper and lower frequency bands which crossover at 90 MHz. Low insertion loss and VSWR combined with reasonable isolation enable separate 30-90 and 90-520 MHz radio outputs to be connected to a single wideband antenna such as to provided continuous frequency coverage over the whole 30-520 MHz band. Only at the 90 MHz crossover point plus a few MHz either side of it does insertion loss and VSWR rise and isolation reduce. See graphs showing typical values.
| Frequency Ranges |
30-90 MHz 90-520 MHz |
| VSWR | ≤ 1.5:1 30-80/100-520 MHz rising to ≤ 3.5:1 @ 90 MHz |
| Impedance (nominal) | 50 Ohms |
| Power | 50 Watts CW |
| Insertion Loss | ≤ 0.25 dB 30-70/118-520 rising to 3.75 dB maximum @ 90 MHz |
| Isolation |
≥ 7 dB @ crossover (90 MHz) ≥ 20 dB 75/108 MHz ≥ 50 dB 30-60/130-520 MHz |
| Connector | 3 x TNC Female |
|
Max Dimensions (excluding connectors) |
4.5 x 3.0 x 1.2 inches (115 x 77 x 31 mm) |
| Weight | 0.7 lbs (0.32 kg) |
| 21-80-49 | |
| Model # | 21-80-49 |
| Brand | Cooper Antennas |
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