We found a new G.M.R.S. repeater site | Part 2

[@Undertaking-Life]

Heat rises to the top so exhaust the air at the top. Make it cross ventilation, 2 fans pulling out at the top on both sides and 2 fans blowing in near the bottom on both sides. Line them up equal from the top to bottom to make it pretty.

[@JDubbsadventure]

That might be the move

[@NickPixelTV]

Intake low exhaust top

[@JDubbsadventure]

Thanks most likely the way to go lol

[@roc8534]

Heat Rises , I would put fans at the bottom blowing in and put fans on the top blowing out

[@JDubbsadventure]

I agree

[@muddytiresclub4264]

What we do out here in the desert, it gets real hot and real cold. We build the system in a camping cooler, seal it well. Drill your penetration’s and seal them. Then bury it in at least a foot of soil and yes more is better. When it’s on a mountain top here I assume negative temps so I use a usb coffee cup warmer and thermostat to help batteries live longer. You can also bring bags of concrete and cast small walls and build pretty cheap a very small space that’s also very protected. How much do you care? How much time vs money do you want to spend.

[@JDubbsadventure]

I’ll take that into consideration

[@rrvroman79]

Put a fan at the bottom and another at the top. Pulling cool air from the bottom and pushing the hot air out the case.

[@JDubbsadventure]

That maybe the way to go

[@KeithMorrisonSr]

Remember…heat rises. Put exhaust on top and draw in cool from the bottom. Do that then take a temperature check & see if that hits your desired temperature.

[@JDubbsadventure]

Bingo

[@jeremy-ex9yk]

4 fans all top mounted, use vents with grills on bottom. run 2 fans on one setting with a splitter, 2 on another setting. leaving u one setting for a fan on ur transmitter , an the last fan on ur reciever, total of 6 fans, that fan controller can handle 12a at 12v, 3amps per control setting, as ur powering it with the 30amp psu ur golden

[@JDubbsadventure]

That would be nice but the controller can only handle 3amp on 12v I could add another controller or a different one but I already have the parts from other projects

[@jimfred5992]

Cage mesh the side 4inches on top and mount fans sucking the heat from the equipment and pushing the hot air out the mesh ports. Rodents becomes a problem

[@JDubbsadventure]

I was gonna use mesh to help with mice and bugs

[@jimfred5992]

bees building nest has to be small and strong .i like the top pushing and sucking the hot air off the equipment because it keeps a strong flow out and possibly detouring unwanted things. Like dust and unwanted visitors.

[@DSHIDS]

I doubt that cabinet is air tight. I would concentrate on 1 intake fan at floor lever, 1 fan blowing on the heatsink fins facing towards 2 exhaust fans at the top close to the transmitter

[@JDubbsadventure]

It’s definitely not air tight. Thanks for the input

[@warlockcommandcenter]

An exhaust fan is the most effective for air flow. Consider 4 exhaust fans.

[@JDubbsadventure]

So 4 exhaust fans and just holes on the other side?

[@warlockcommandcenter]

@@JDubbsadventure yes air flow is key.

[@davidschmidt5848]

I agree with other comments. Seems best option

[@JDubbsadventure]

Sounds good

[@uncledanny7]

I would go with the fans up high because the heat rising they should do a better job of pulling it out

[@JDubbsadventure]

@@uncledanny7 yep that might be the best option but maybe someone else has an idea

[@jeremy-ex9yk]

if u have access to enough 7/8s heliax that is foam dielectric an not the air type ,the ends are around 35 online. run it from antenna to just outside ur repeater cabinet , use a short rg214 coax between the antenna an 7/8s, same at repeater . ul need an alpha delta or polyphaser lightning protector just inside the building with 6awg copper wire to the tower ground rod. , antenna if side of tower mounted needs to have a 2ft standoff the tower

[@JDubbsadventure]

If you had to choose between Polyphaser vs lightning arrester

[@jeremy-ex9yk]

@@JDubbsadventure there the same, i use polyphaser, its for tower static or lightning strikes nearby , as if u get a direct hit from lightning everythings toast

[@JDubbsadventure]

@@jeremy-ex9yk they cost alot different… yea when I was with the phone company I found what lightning will do

[@jeremy-ex9yk]

@@JDubbsadventure get on ur repeater zello, ill explain