Category Archives: Tech Tips

Could 4G help rural areas get online?

While the government likes to talk about broadband as a commodity, alongside water or electricity, the sad truth is that many rural areas can get little to no service. There have been many false dawns in rural broadband; so is … Continue reading

Posted in Futureology, Home Networking, Radio Solutions, Satellite Technology, Small Business, Small Business Connect, Tech Tips, WAN, Working From Home | Leave a comment

Understanding Polarisation

There are two major types of polarisation: Cross Polarisation (Cross-pol) and Co Polarisation (Co-pol). Looking at cross polarisation initially, there are two types of cross polarization namely circular and linear. Within the circular realm there is the Left Hand Circular, or … Continue reading

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LEO and MEO Satellites

Traditional communications satellites orbit at what is known as a geosynchronous (GEO) orbit at a height above the earth of 22,300 miles (36,000 km). The advantage to this very specific location is that it takes 24 hours for the satellite to orbit … Continue reading

Posted in Data, Radio Solutions, Satellite Broadband, Tech Tips, WAN | Leave a comment

ATM and IP overhead on DSL Broadband connections

There are a number of protocol layers involved in data transfer over a broadband line, each of which adds some overhead. Line rate The actual line carries data using a protocol called ADSL. This includes layers of data framing and … Continue reading

Posted in BT, Home Networking, Small Business Connect, Tech Tips, xDSL Technology | Leave a comment

Get in the back! The robot’s driving.

The much vaunted phenomenon of automated cars has returned again to the news this week, Read this here. Events like the DARPA Grand Challenge and their ilk continue however to demonstrate that robots can and probably will develop into the way forward for general … Continue reading

Posted in Futureology, Home Automation | Leave a comment

The EIGRP (Enhanced Interior Gateway Routing Protocol) metric

EIGRP (Enhanced Interior Gateway Routing Protocol) is a network protocol that lets routers exchange information more efficiently than was the case with older routing protocols. EIGRP which is a proprietary protocol evolved from IGRP (Interior Gateway Routing Protocol) and routers … Continue reading

Posted in Cisco, LAN, LAN Routing, Routing Protocols, Tech Tips, Uncategorized | Leave a comment

How does a transistor work?

Thousands of textbooks have been written to explain electronics and we haven’t found a single one that can explain the operation of a transistor. Let’s see if we can do better. Here is a picture of a plumbing transistor. We … Continue reading

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What is a Yagi Antenna?

Ask your average person what a Yagi antenna is and they will probably look at you with a puzzled expression. The fact is however that everybody in the UK has probably seen a Yagi antenna and in all likelihood used … Continue reading

Posted in Data, Futureology, LAN, Radio Solutions, Small Business Connect, Tech Tips, Uncategorized, WAN, Wireless LAN | Leave a comment

Telnet

The Telnet (telecommunications network) program is intended to provide a remote login or virtual terminal capability across a network. In other words, a user on machine A should be able to log into machine B anywhere on the network, and … Continue reading

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Security At the Edge: Locking Down the Network Perimeter

When securing your company’s network, it’s best to start on the edges — the perimeter — where the system interfaces with the rest of the world. It’s an approach that makes sense. While installing safeguards deep inside the network is … Continue reading

Posted in Access Control, Cryptography, Fortify, Home Security, Infrastructure Security, Intrusion, Network Security, Resilience, Security, Small Business Secure, Tech Tips, Threat Management, Web Security | Leave a comment