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Post by End80 on Feb 26, 2017 23:53:47 GMT
I believe Jim said he's already has one coming, but still think the one I suggested earlier would be perfect, and cheap to boot at $11.00! |
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Post by jimhenry2000 on Feb 27, 2017 6:01:41 GMT
End80, yes I have several coming, for free, but I think I missed this $11 enclosure you mentioned. Can you refresh my memory? Thanks. Jim I believe Jim said he's already has one coming, but still think the one I suggested earlier would be perfect, and cheap to boot at $11.00! |
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Post by End80 on Feb 27, 2017 7:36:17 GMT
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Post by radiodugger on Mar 23, 2017 19:59:39 GMT
Eleven bucks! Thanks, Rich...I might do that. Regarding the 102" whip...check with Jeff (Station 8) on this...I'd go with a 1/2 inch OD, ten foot copper pipe. I understand you get better bandwidth.
Doug
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Post by Boomer on Mar 23, 2017 21:55:06 GMT
I might have to check out some of the Uxcell boxes, and I see more hams using plastic boxes like this for homebrew projects now, such as QRP (low power) transmitters and receivers, for indoor use.
I'd have things to consider when putting one outside. If it's just PVC it might weather and crack in a few years. If it's thin wall, it may not support an antenna mounted to it, at least a single bolt mobile through hole antenna.
I like the Procaster's antenna, mounted on the side of their transmitter box on two insulated standoffs, but the copper pipe used by many homebrew part-15 people would be a heavier weight on the standoffs.
Maybe the cheap boxes would work better if they didn't bear any load. You could have a section of plastic pipe to mount the box, and right above the box on the same pipe, the loading coil would be wound, all once piece.
There could be a pipe cap at the top with an 8 foot whip mounted to it, and connected to the top of the coil. Yes, PVC again, but I saw a post somewhere about a ham doing mobile and using ABS plastic pipe.
Boomer
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Post by station8 on Mar 24, 2017 22:52:13 GMT
Howdy y all: Let's talk about enclousure.
You guys need to do serious vendors research on who makes various enclosure you will need for the proper job!
1) Size of box
2) Size of pole operations ( weight operations )
3) Weather proof
4) UV resistance
5) Plastic or metal enclousure
6) Brackets for enclousure ( moulded or add on's )
7) Weight of tx and case together
8) Wind resistance load ( doesn't act like a sail )
You have to make sure your case will support your antenna weight as well !
Keep in mind NOT getting the right enclousure your transmitter will come down if NOT mounted correctly !
There are several way to mount antenna and your tx enclosure to your pole and need to do research on that as well !
Now you need to look at connector that are weather proof and will take harsh weather as well for your tx case !
So keep in mind you can't go with the first thing
There is more you can talk on this subject,But I leave it here.
Good luck station 8
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Post by part15engineer on Mar 25, 2017 12:32:04 GMT
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Post by station8 on Mar 25, 2017 13:30:03 GMT
Howdy y all: Here is more information to sit on !
If using some sort of plastic enclousure now you need to be concern about .
1) Thickness of enclosure
Keep in mind using a metal case.
1) Painted ( how long will that last )
2) Powder coated
You guys need to be concerned about the type of gasket your using as well
Just more tib bits to think on
Station 8
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Post by radiodugger on Mar 25, 2017 22:20:41 GMT
Hi Jeff!
Any comments on 102" whip vs 10 foot copper pipe?
Doug
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Post by thelegacy on Mar 27, 2017 1:37:47 GMT
On the public section of the filling site he made a post.http://the-initiative.boards.net
Look under AM antennas.
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Post by jimhenry2000 on Mar 27, 2017 4:22:17 GMT
I don't see any weather-proof ports on this enclosure to allow you to bring power and audio in, and take signal out to the antenna. [/p] 
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Post by thelegacy on Mar 27, 2017 6:26:15 GMT
I might have made a mistake because I thought you were talking about a 102 inch whip vs a copper pipe.
I know somewhere he talked about enclosures and how they need to be weatherproof and UV proof as well.
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Post by Boomer on Mar 28, 2017 5:18:28 GMT
I notice a couple of kinds of enclosures used around here, there are metal boxes called 'Mallard', with the outline of a duck on them, and a newer kind that looks to be for networking, and larger equipment, don't know the name yet, but it looks like regular plastic, like a phone box, but looks like it might be coated fiberglass.
These are on poles for all kinds of traffic signals. One of them has a puck antenna on top of it, it used to be a little groundplane antenna until it was changed, the radials stuck out into the sidewalk about 6 feet up, and it was a hazard. There are also wi-fi boxes that are a smooth grey color, with a one piece cover with screws at the outer edges.
I think I'd like the Uxcell boxes for indoor projects, but probably we should search for something tough and outdoor rated, even if it costs more.
Boomer
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Post by End80 on Apr 24, 2017 2:02:18 GMT
I don't see any weather-proof ports on this enclosure to allow you to bring power and audio in, and take signal out to the antenna.
Drill holes to feed the power and audio cable, those entries aren't exactly weatherproof on the Rangemaster either, but those holes are located on the underside so there's little chance of rain or anything getting in there anyway. I suppose you could use silicone to seal it after you run the wires.. but I never did and have not experienced any ill effects in years of use. Besides, it seems the little bit of ventilation the holes provide is probably a good thing.
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Post by jimhenry2000 on Apr 24, 2017 2:34:02 GMT
This is the enclosure I plan on using.    I don't see any weather-proof ports on this enclosure to allow you to bring power and audio in, and take signal out to the antenna.
Drill holes to feed the power and audio cable, those entries aren't exactly weatherproof on the Rangemaster either, but those holes are located on the underside so there's little chance of rain or anything getting in there anyway. I suppose you could use silicone to seal it after you run the wires.. but I never did and have not experienced any ill effects in years of use. Besides, it seems the little bit of ventilation the holes provide is probably a good thing.
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