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1. #CAR RADIO ANTENNA BOOSTER DIY HOW TO#
2. #CAR RADIO ANTENNA BOOSTER DIY SKIN#
3. #CAR RADIO ANTENNA BOOSTER DIY TV#

So a directional antenna improves the SNR, so is better for receiving, it also can focus the beam and be better for transmitting.īut an antenna thats great for receiving isn't always great for transmitting, which is why roofs are peppered with Yagi antenna for TV reception, but you don't see them used for cell towers or for building to building communications. The SWR is a number which shows how much of the signal you get reflected back to the transmitter rather than out of the antenna as radiation. With a good SNR, even a very weak signal can be boosted to the point where the receiver understands it.Ī Yagi is an example of an antenna that picks up signals directionally pretty well, but has poor transmit properties because it has a bad "Standing wave ratio" or SWR. This concept is called "signal to noise ratio" or SNR. That means its easier to hear them even at the same volume. A directional antenna is like putting walls parallel to your line of sight, sure, you'll still hear people behind and in the path of your friend, but the people off to the side will be muted. Examples are satellite dishes, building to building antenna etc.Īlso, a non-directional antenna will pick up signals from every direction, which if you are not actively listening to those signals is a source of noise - think talking in a crowded room. You'll see directional antenna where you know where the signal comes from. That's what you'll find in all the rubber antenna you have.īUT you can focus the power you have in a specific direction - its probably illegal but we'll come back to that.Ī directional antenna avoids sending signal in directions you don't want which means the power you supply more preferentially goes in the direction you do want. To put it simply, you can't get better radiated power than a 32mm length of copper.

#CAR RADIO ANTENNA BOOSTER DIY SKIN#

Play nice, support each other and encourage learning.īasing this off of AUS FM Band (88-108Mhz) and the already miniscule power output of the wifi dongle, OP wouldnt be causing any interference for any other signals in the area as the loss in power through the antenna would cause it be lucky to make it a couple of meters let alone get out of the house.ĭepending on the transmitter and use (often into the tens of kilowatts for FM stations here), heavy regulations are put in place to monitor the red zones of the antenna radiations at their licenced powers, the red zones can lead to cancer after a large enough period of time working in the zone but as the RF is not ionising radiation, the more likely dangers are due to the high amounts of EMF and radiation off of the antennas at these powers, they can and will cause burns and damage to skin along with brain problems such as headaches, nausea and more. We are not tech support, these posts should be kept on /r/techsupportĭon't be a dick. Low-effort content will be removed at moderator discretion from security firms/pen testing companies is allowed within the confines of site-wide rules on self promotion found here, but will otherwise be considered spam. Spam is strictly forbidden and will result in a ban. Sharing of personal data is forbidden - no doxxing or IP dumping No "I got hacked" posts unless it's an interesting post-mortem of a unique attack. "How does HSTS prevent SSL stripping?" is a good question. Intermediate questions are welcomed - e.g. Offering to do these things will also result in a ban.

#CAR RADIO ANTENNA BOOSTER DIY HOW TO#

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