VSAT Technical Training Courses

Satoms will soon be offering online training courses for the Satellite & Communications industries. These courses will provide in-depth technical content, Health & Safety and practical information working in these sectors. The courses will give you the technical knowledge you need to progress your career and the confidence to step up to the next level. […]

Terminate Coax Connectors Correctly

Ensuring that the coax connectors (F-Type N-Type or BNC etc.) are properly terminated is vitally important if you want reliable communications. Poorly terminated connectors will cost you money, time and reputation. This poorly terminated RG-6 coax was used in a production Oil & Gas platform and used cheap push on F-type connectors. The stabilised antenna […]

iDirect X7 LED Status and Specifications

The iDirect Evolution X7 is a powerful satellite router that supports DVB-S2 and ACM on the outbound carrier and ATDMA or SCPC on the return carrier. Below is an explanation on the front panel LED status and the brief specification. POWER The Power LED indicates the power supply status. Normally solid GREEN if the power […]

VSAT Satellite Latency

The latency time of a satellite link is a crucial factor when choosing to use a satellite system, it can affect the performance of your network and some applications experience issues when the latency is too high, not to mention a poor user experience. Radio Frequency (RF) waves travel at the speed of light which […]

VSAT Rain Fade

Rain fade is the deterioration of the microwave RF signal levels caused by rain precipitation on either end of the satellite VSAT link. Typically, Ku and Ka band links are affected (frequencies above 11GHz) and can occur at the VSAT remote or the Teleport end of the link. RF energy is absorbed and scattered by […]

Adaptive Coding Modulation (ACM)

What is Adaptive Coding Modulation (ACM)? Adaptive Coding and Modulation (ACM) is a technology which automatically changes the Forward Error Correction (FEC) and modulation utilized on a satellite link to compensate for changes in link conditions, so that it is operating at the most efficient coding and modulation scheme available. Why use ACM? Commonly the […]

VSAT Sun Outages

What is a Sun Outage? A sun outage (or sometimes called a solar transit event or sun fade) happens twice a year during the equinox in March and September, when the Sun is directly above the Equator. Each outage lasts for several minutes for a few days and is caused by the satellite passing directly […]

Relative Azimuth Calculation

Relative azimuth is a term used in maritime satellite communications. It is the bearing (azimuth) to the satellite referenced from the bow of the vessel in a clockwise direction. The azimuth to the satellite does not change unless the vessel moves location and stays the same as the heading changes. The relative azimuth will change […]

Calculate the Clearance of an Obstruction

Satellite Dish Obstruction Calculator Dish Elevation Angle (e): ° Height of Obstruction (h): m Calculate Distance to clear obstruction: m If you think you may have a line of sight blockage to the satellite and want to check the distance away from the obstruction (trees, buildings, mast, etc.) you need to be then some simple […]

VSAT Link Terminology

VSAT terminology can often be confusing at first but it’s really quite simple and this diagram shows how it relates to the VSAT remote site or the Teleport hub side. The Uplink is always the link to the satellite and the downlink is always the link from the satellite irrespective of which side of the […]