MB7IRX 4m Information
License details.
| Callsign | MB7IRX |
| Transmitter Frequency | 70.350 MHz |
| Receiver Frequency | 70.350 MHz |
| CTCSS Access Tone | 82.5Hz on Receive and Transmit |
| Modes | FM-Narrow 2.5KHz deviation |
| Antenna | MOONRAKER SQBM412 |
| Antenna Height Above Ground | 20m |
| Maximum Antenna ERP | 7 dBW, 5W |
| Responsible Licensee | M0NFI |
Radio Settings.
MB7IRX 4m gateway is one of the new non-NOV gateways allowed by the licence changes in February 2024.
To use a simplex gateway you need to listen and transmit on the same frequency, MB7IRX 2m Gateway transmits and receives on 70.350MHz and requires a CTCSS tone of 82.5Hz.
MB7IRX 4m gateway is permanently linked to HUBNet.
All simplex gateway nodes are licensed for narrow deviation only so please make sure your radios are set to narrow. If you operate your radio in wide deviation mode you could cause distortion and your signal may be dropped by the gateway radio. Leave a gap of four seconds between overs to allow all linked nodes to reset and for anyone else to join in. Before transmitting into a gateway please listen for a while to make sure it's not in use. Two people can use the same gateway to talk with other users but as it's only simplex you will be hearing the other local user directly from their radio to yours.
The tones from the gateway assist with determining who is operating from where.
When you transmit into the gateway and it's connected to another node, as you unkey, the gateway will reply with a morse K (dah-dit-dah) with a higher frequency of 1200Hz.
When you transmit into the gateway and it isn't connected to another node, as you unkey, the gateway will reply with a morse K (dah-dit-dah) with a lower frequency of 800Hz.
When a remote user on the network ends transmission you will hear a morse I ( dit-dit).
Coverage Prediction.
