Hello all, before i start this discussion i'd like to let everyone know that i know linears are illegal in the CB band range. I understand linears aren't needed for communication. But this is my radio set up so ill do as i please with it. I am here for some advice! Thanks in advance
I am looking to add a linear to my mobile unit in my daily driver. (89 ranger)
I am running RG8X coax, with a 5' firestik. SWR of 1.1 on Chan.1 and 1.3-1.4 on channel 40. I am looking at a Texas star 350HDV. Somewhere between 200-300 watts! The radio i am running currently is a Galaxy DX44V. It deadkeys between 1-10 watts(adjustable) and swings to around 40 watts max. I have a barefoot Cobra 29 that im willing to put in place of the 44V if it would be a better combination with this linear. I am not 100% sure on how to work a linear, the buttons and their knobs, etc. I have read that linears have a certain max watt input(3-5 watt deadkey) with a max input of 20 watts. If someone could clarify this, (max inputs) (high-drive)(pre-amp) it would be much appreciated! I also have a galaxy DX919 that i could use for this combo if it would be better suited (power wise) for the amp!
I have also heard that high power linears in mobile units would sometimes fry your vehicles computer and other electronics... Anybody ever heard of this? I'm pretty sure 250-350 watt linear wouldn't do this type of damage but possibly 500 watts+? Anybody know?
Linear for Mobile Unit
Discussion in 'CB Radio Forum' started by HotRodConner12, Feb 3, 2017.
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I wouldn't recommend anything smaller than this.
250 watts out with 4 watts in.
500 watts out with 10 watts in.
4-2SC2879 transistors
class AB1
http://www.copper.com/cart/Texas-Star-DX-500V-Mobile
Last edited: Feb 3, 2017
Reason for edit: 10 typojessejamesdallas and HotRodConner12 Thank this. -
So you don't think the 500V would damage electronics in a truck? Or draw too much current?
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Would RG8X coax (21ft) handle this amount of power with no problems?
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I don't see why notHotRodConner12 Thanks this.
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You will first have to check how many amps is the stock alternator and determine how much power you can run in that vehicle. If the stock alternator is 65 amps and the cb amp draws 40 to 45 amps, that only leaves 20 amps to run the other electronics in your vehicle, in that case you will either have to choose a smaller amp or upgrade to a larger alternator. Generally a good rule of thumb is 10 amps per 100 watts so a 500 watt amp will require close to 50 amps. In my 2005 Ford F150 ( 110 amp alternator) I ran a palomar 225 for years, on high it would pep at 180 watts and draw about 15 to 20 amps and I never had a problem with it as far as damaging any electronics in truck. The most recent amp I used was a Palomar 450 LD Fet which has 5 Mosfets , and would peak around 300 watts and have a amp draw of around 25, hope this helps.rabbiporkchop and HotRodConner12 Thank this.
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If you are pushing 40'watts I would go with the 500 also or a comparable class C box. 40 watts will burn up the variable in that 350. I've run a general lee doing 45 watts into a two pill fat boy and burnt the variable up twice. That same radio drives my straight 4 pill nicely and I can get my name called talking skip whenever I want in my daycab Volvo. Just make sure the electrical system can handle the draw.
wolverine11 and HotRodConner12 Thank this. -
Make sure you know the amp draw of the linear as was mentioned by someone else.... use welding cable and the right gauge thickness needed....ground everything and then do some more groundingHotRodConner12 Thanks this.
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As long as it's set up absolutely correct... freightliner cascadia trucks have been known to fry the ecm.....even with a 400 watt kicker !!! Proper gauge wire and coax and many other things come into play with more power....HotRodConner12 Thanks this.
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