Tuesday, 29 November 2016

Radio jamming

This article will aim to clear up some myths about electronic warfare (EW), particularly as it pertains to radio jamming. Radio engineering is a really complex subject which people have a bad habit of skipping over. They don't take the time to understand it at all, and instead would rather jump right to the applications. Military morons love to write long winded articles about EW and how it will allow their army of choice to dominate the battlefield. They like to bloviate on how their cutting edge equipment will effectively neutralise the enemys ability to communicate by radio, without exception and without the possibility of counter-measure. Unfortunately, the reality is alot more complicated. Before you can make any sort of predictions, you need to know the specifications of enemy radio sets, and the specifications of friendly EW equipment. You also need to know the basics about radio engineering. First off, the range of an emitting radio depends on its frequency, power output, antenna type, and how clear its line of sight (LOS) to the receiver is. Second, these factors heavily influence your sides ability to actually detect the enemys comms and triangulate them. If they are using low power backpack sets in the confines of a forrest, and your receivers are located miles away on top of a mountain thats getting alot of interference, then you won't be aware of their presence at all.

Line of sight (LOS) is a very important
factor in radio communications

Lets use a less extreme scenario that puts you and the enemy on flat grassland, with a good LOS to each other. [1] They are carelessly using an omnidirectional antenna that your receivers can actually detect. What happens then? If you have something like a AN/TLQ-17 jammer, it can find the emitting radios position, match its emission frequency, and bathe the surrounding area in white noise. As a result, nearby radios will have their reception disturbed and won't be able to receive any signals. Does this mean that they are no longer able to communicate with each other? Not at all. If the enemy becomes aware of jamming, they can re-orient the antenna to try and lessen interference, and if that fails, switch to a backup frequency and issue a briefing message. [2] Both the emitter and receiver can then relocate to a different position, somewhere less prone to interference, to continue sending radio messages to each other. Keep in mind, this ignores the possibility that enemy radios may actually be able to defeat the jamming through brute force! They can do this by keeping the distances between emitter and receiver short, by using radio repeaters, or by cleverly using antenna masking. So even in ideal situations where you have flat terrain, good signal to noise ratio, and a high concentration of jammers, a competent enemy can bypass persistent attempts at jamming.

That last point (about the number of jammers in an area) is quite important, because the enemy may have many different radio sets communicating on many different frequencys at once. Going after all of them presents a workload so high that impractical, broad spectrum jamming will be needed. [3] And if the enemy is a real jerk, he might develop a habit of triangulating your jammers, finding their position, and bombarding them with artillery. This would force you to keep them many miles behind friendly lines for safety, reducing their effective radiated power. Thats very undesirable when the enemy uses AM radios, which do not distinguish noise and interference from the true signal, and make the task of jamming them alot harder (since you need to completely saturate the receivers with white noise). At such a great distance, your jammers will have a reduced area of dominance, and might not be able to reliably blot out their communications. So again, people need to realise that electronic warfare is a complicated endeavor whose success is dependent on many variables, including how you and the enemy interact. Despite what military morons claim, you can't just press a button at divisional HQ that blots out all their comms on all frequencys. Even with a high concentration of radio jammers, they have ways of getting around this!

 Antenna masking is useful for evading
enemy receivers and jammers

[1] This ignores situations where the enemy needs to send only a single report over radio, as the messages brevity makes it impossible to stop. Instead, we'll focuses on the steady flow of radio traffic, and how well it can be disrupted.

[2] Thus enabling them to temporarily bypass the jammer, which needs a few seconds to analyse and match the new radio frequency being used.

[3] Broad spectrum jamming is best done with multiple jammers, rather than one by itself. After all, the larger the spectrum being jammed, the less power is available to create noise.

Note: Because of the length of their transmissions, the peculiarity of their signal, and power output, jammers are easily located and identified as targets for attack by suppressive fires.

Wednesday, 9 November 2016

Donald trump victorious!

A phenomenal victory for donald trump, and a spectacular defeat for hillary clinton! Trump fought against washington, fought against the media, fought against all the naysayers who said he had no chance, and he won the election fair and square. Democrats (and some republicans) used every under-handed and manipulative trick they had to marginalize trump and boost hillary. They created false dilemmas, engaged in illegal campaign co-ordination, instigated violence at political rallys, and coerced dozens of celebritys to support hillary, and they still couldn't win! Their decision to nominate and support clinton was a collossal error in judgement, as was their immense overconfidence in victory in the weeks leading up to this day. They counted their chickens before they had even hatched.

The democratic party has now suffered a major setback and loss of credibility, and they have NO ONE to blame but themselves. Trump and pence did a phenomenal job on the ground of convincing ordinary americans to vote for them, while clinton and caine bought their votes through proxies and committees. So disingenous... In any case, america has taken a major step in the right direction. Disaster was certainly averted, but the battle is not yet over! The fact that hillary clinton was able to embark on a presidential race, much less come close to winning at one point, is an alarming sign of how much corruption there is in america. The mainstream media needs to be punished for their absurdly biased reporting that verged on propaganda. Hillary clinton needs to go to prison for all the laws she broke in aiding her globalist friends. Its time to drain the swamp!

Onward to victory!