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Details
View of the multiplexer
 |  |
Views of the multiplexer attached to the mast
View of the packaging
Application
MM-407 multiplexer is used as a device that adds up signals from multiple antennas, installed on a mast, and is placed there, near the antenna set. It has BI/FM input, designed for connecting radio FM antenna, BIII input to connect an antenna for VHF band, and two UHF inputs. It is possible preamplifier's feeding. The diplexer has 5 F-type connectors, and is closed in metal, screening casing.
Installation and security notice for diplexer's/multiplexer's users
The MM-407 multiplexer is designed for mast installation and can work in open spaces. To avoid any possible damage, the device should not be powered until all the connections are properly made. Optional preamplifier's feeding through UHF2 input must not exceed 60 mA.
Specifications
| Code | R902044 | |
| Name | MM-407 | |
| Number of inputs | 4 | |
| Frequency range | Band | BI/ FM | BIII | UHF1 | UHF2 |
| MHz | 40-108 | 160-260 | 470-862 | 470-862 | |
| Insertion loss | dB | 0.9 +/-0.4|0.9 +/-0.4|4.7 +/-0.8|4.7 +/-0.8 |
| Isolation between inputs | dB | >=20 |
| Rejection between inputs | dB | >=30 |
| Return loss | dB | >=10 |
| DC cross | mA | - | 60 |
| Working temperature | ºC | -10 .. +55 |
| Weather protection standard | IP 53 | |
An example of multiplexer's use