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Design yagi uda antenna six elements to provide a gain of 12DB if operating freq is 200MHZ

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3 element beam specs cb ant. S.W.R. manufacturer info. on directional for c.b. radio

the longer the boom length the more gain you will have.. a 5 or 6 element will give you more gain then a 3 element.. the 3 isnt much more gain then a omni antenna just a larger lobe in one direction.. Look into Amateur Radio antenna books for the correct info.. but the longer the antenna the more gain you will have but also will make the main lobe smaller. and more direct. but if your want a beam thats what you want. POINT to POINT not a circular pattern..

Dec 24, 2015 | Radio Communications


Enhance your audio transmit

i advice to use a Desk Microphone whenever at your Home or Office, it enhance and make your audio clearer and most of all louder, even if your Signal is weak , having a Loud and Clear audio will perform better than a strong signal with a Stock Audio. Monitoring stations will hear and be amazed with a small signal but a loud audio.

suggested mics like Turner plus two, Turner sidekick, and the famous Astatic Microphones


it can be also connected to Echo Chamber to provide nice effects.

most of all, the antenna, matter what radio, the one with a good antenna performs better, than a setup with booster having poor antenna installation. typical SWR is 1,1 to 1.3, if you can get 1.5 its good but 1.0 is best. Good grounding is also important.

for Omni , i suggest a Golden Penetrator antenna , it is a 5/8 wavelenght Vertical Antenna ,

a 2 element Quad or a 3 element Yagi Antenna for directional one.

and a good Regulated Power Supply too, must have at least 6A minimum,

higher is better.

on May 29, 2009 | Cobra 148 GTL 120-Channels Base CB Radio

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What is the video single output VHF FM UHF 12db

That sounds like the description of a broadband amplifier. It likely has "F" type (cable-coax) connectors and a power cord.
Commonly used to increase the signal level of TV cable to compensate for inserting a signal splitter, or in some cases to increase the signal level from an antenna, typically outdoor TV or FM radio antenna, so it is connected between the signal source (antenna, or cable) and receiver with antenna as input and receiver connected to the output of this little box. The gain (amplification) it provides is 12 dB, so the output is more than 3 times the input.

Oct 03, 2014 | Radio Communications

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Poor reception

There are many causes for poor reception on a cb radio one cause may be poor or poorly assembled antenna, a good antenna should be of highest gain and put up as high as possible ,An omnidirectional antenna or Ground plane will hear moderately well
in all directions but a directional antenna or Yagi will hear great only in the direction it is turned you will certainly have to decide what you or your homeowners association will allow.
Also and finally The sun is a major factor in communications Propagation sometimes no mater what your setup the reception is terrible.

Feb 24, 2014 | Uniden Bearcat Pro PC68XL 40-Channels Base...

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Hi, I am thinking of buying a dx-95t. I am a novice but I do not want to start with some rubbis and upgrade later. It would be used in a house in Budapest Hungary to communicate with friends locally or...

To be able to get the same distance in all directions for local use the best type of antenna is a vertical with as much gain as possible. Most makers quote gain in db and this means how much better the antenna is than a plain wire antenna. This antenna will also work for dx on sidebands but the signal goes out in all directions the same distance.

If you want to get a longer range in one direction you have to sacrafice the distance in other directions. To do this you need a directional beam antenna. There are several brands with very little between any of them. What you need to be looking at, if you decide to use a beam type antenna is either "yagi" or "log periodic array" antennas. These are types of antenna rather than brand names. The log periodic array will give the longest range and the yagi will give the next best. Log periodics are very expensive but give the best results. Yagis come with different amount of elements. The more elements it has the better it works but even yagis with 3 to 4 elements give significant improvements over vertical antennas. Because both these type antennas concentrate the signal in one direction you need to be able to rotate it to the direction you want to send, and receive, the signal unless you only want to send it one direction. This means that you might need a mast and rotator which allows you to turn the antenna from a control beside the radio. These make the hobby even more expensive so it depends on how much you can afford to spend. Also make sure that the antenna you buy is resonant on the frequency you'll be operating on i.e. 27Mhz. Otherwise you'll burn out your radio. If you google the different types of antennas you'll find places selling them. You can also buy an antenna tuner that matches antennas to your radio if the frequency is not exactly matched to the radio. It reduces your power out a little but makes very little difference to the range of your signal. Also get the antenna as high as possible to a maximum of 30 feet. After that the gain is offset by the loss of signal through the co-ax cable. Use low loss co-ax cable to reduce the amount of signal you lose between the radio and the antenna.

Having said that I've contacted America from the west of Europe several times using a vertical antenna so you might not want to go for the best.

You need to be aware that there's an eleven year sunspot cycle which affects the long range radio communications. At the height of the sunspot activity you'll get long ranges without any difficulty and at the low you'll rarely get long range. At the moment we're just coming out of the low so it will be another few years before we reach a high. Just don't judge your dx activity on how well you do at the moment.

Good luck with the radio and if you enjoy it consider becoming an amateur radio operator. It gives you more frequency bands to use so the sunspot activity doesn't limit you so much as other frequencies improve with low sunspots. I started off with CB and am now an amateur radio operator for over 30 years.

Jan 15, 2011 | Galaxy Radios DX-95T Base CB Radio

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Which antenna can be used for sony trinitron

for Tvs have larger viewing areas, yagi outdoor antenna is the best. With a telescopic indorr antena, although it will work, but there will be some snow in picture, and some interferance, which will be noticable with large screens. Moreover yagi antenna is best for good signal strength and choose an antenna which ahs larger number of cross bars, as it will rise the strength of signal as well as clarity of the picture. Ok

Dec 13, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

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What kind of indoor/outdoor antenna I need to purchase for this TV? What specification do I need to look for?


An outdoor antenna is more better than indoor antenna. If we fix an indoor antenna, especially in rooms in a flat type structure buildings, due to its iron network structure reinforced inside its concrete will oppose a considerable obstruction to tv signals to get through. Moreover, if any paerson walk through these telescopic type antenna, picure will get shiver of it will be distrurbed.

So buy an outdoor antenna, and hoist it at suitable place, where there are no obstructions comes between the signal path of the transmitter and the antenna. Get an antenna, whcich has as many as cross elemets, if it is a yagi type. As number of elements increses, the sensitivity and seletivity of the antenna will also increase, resulting in good and detailed picture clarity. OK

Nov 30, 2010 | Sharp 20F640 20" TV

1 Answer

Amp settings

It's going to be mainly "what sounds best", but I'll give you a start.
  • Set the gain to 50%.
  • Set the LP filter to 12db at about 80Hz.
  • Set the infrasonic filter to ON and at about 20Hz.
  • Set the Bass EQ to ON, Q to 0.7, center freq to 40Hz, and boost to about 5dB.
The other settings are going to be based on how the system is connected to the head unit.

Mar 22, 2008 | Jl Audio 500/1 Car Audio Amplifier

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