Author Topic: Rubi's Build up  (Read 17374 times)

Offline RnnngTrails

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Re: Rubi's Build up
« Reply #45 on: July 03, 2008, 08:51:22 PM »
oh on a side note, Zach's CB is done minus the straps. We were in fact able to get the space station. They're doing well and send their best. ;)
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Offline CnoteTJ

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Re: Rubi's Build up
« Reply #46 on: July 03, 2008, 10:04:12 PM »
and we only used half the antenna for now, dont wanna catch any power lines! ;) :D
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Offline Axle

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Re: Rubi's Build up
« Reply #47 on: July 04, 2008, 03:55:42 AM »
I saw your rig at the sub fest, zach.  That antenna looks great!  I can't imagine having the whole thing attached!  I would be careful.  Does it send and receive well?
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Offline RnnngTrails

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Re: Rubi's Build up
« Reply #48 on: July 04, 2008, 04:17:39 AM »
so far we cant get more than 10 feet.. i think it needs the whole thing.
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Offline reg

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Re: Rubi's Build up
« Reply #49 on: July 04, 2008, 04:23:08 AM »
so far we cant get more than 10 feet.. i think it needs the whole thing.

did you bypass the coils inside the base?  Zach had a write up on it.

Offline RnnngTrails

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Re: Rubi's Build up
« Reply #50 on: July 04, 2008, 05:42:04 AM »
idk.. i left that part to him. I just did the install/painting. lol. I'll ask him when i see him again and maybe we'll get it. We tried changing the switch around on bottom. that got us reception further up. but we still have broken transmissions. Like if he were to say a 5 word sentence it would only hear the first 2.
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Offline Seabee_BUC

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Re: Rubi's Build up
« Reply #51 on: July 04, 2008, 03:16:47 PM »
Is this some kind of special antenna you guys are trying to rig up to work??? What is the brand name? Don't forget, until the antenna is mounted and TUNED with an SWR/Field Strength Meter, it won't work as well as it should.

Offline Axle

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Re: Rubi's Build up
« Reply #52 on: July 04, 2008, 03:23:56 PM »
It's some type of military whip antenna.  It's f'n huge, at least 20 ft. of total length between the two pieces.
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Offline reg

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Re: Rubi's Build up
« Reply #53 on: July 04, 2008, 04:02:04 PM »
It's a as 3900 or somthing



came from the army surplus store

Offline rocket

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Re: Rubi's Build up
« Reply #54 on: July 04, 2008, 04:35:47 PM »
Thoes are used for the Army's tactical radios(encrypted).  They are on every truck/humvee that rolls outside the wire.  I forget the frequencies used, but i'm sure they are tuned for the specifc range of the Army's radios, not CB radios.  You should probably stick w/ a CB radio.

Every frequency has an ideal antenna lenght that works best for it (I had some training on this for Afghanistan).
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Offline Axle

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Re: Rubi's Build up
« Reply #55 on: July 04, 2008, 04:41:02 PM »
There's got to be some way to adapt it for civilian use...
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Offline BayouGold

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Re: Rubi's Build up
« Reply #56 on: July 04, 2008, 05:27:08 PM »
SINCGAR
'01 TJ 60th Anniversary Edition

Offline Axle

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Re: Rubi's Build up
« Reply #57 on: July 04, 2008, 05:40:49 PM »
Huh?  What's SINCGAR, Dingo?
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Offline reg

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Re: Rubi's Build up
« Reply #58 on: July 04, 2008, 06:07:51 PM »
YES it can work.  you need to bypass the tuning coils in the base.  the antenna is for HF (high freq)  so is the CB. The tuning colis are what changes the 'hright' of the antenna for the specfic freq's.  tuning the antenna is much like tuning the stainless steel whip (it has to be trimmed) or coils added.
If your SWR reading was higher on channel 40 than it was on channel 1, then it simply means the antenna is too long. If it was higher on channel 1 than it was on channel 40, it is too short. This is really easy to change if you own a tunable-tip antenna. If you own an antenna like this, you can simply unlock the tip and raise or lower the antenna. Continue tuning until you reach a good ratio. If you own a fiberglass whip antenna, it is a little more difficult. First, you have to remove the tip and cut until you can access the wire coil. If it needs to be shortened, you have to begin cutting in around ¼" increments until it is correct. Now, if it is too long, you have to take the top coil and continue moving it out in slight increments until it is correct.


look here
http://www.flashoffroad.com/radio/Milantenna/milAntenna.htm

also, the paint might have screwed it up
« Last Edit: July 04, 2008, 06:14:59 PM by reg »

Offline Axle

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Re: Rubi's Build up
« Reply #59 on: July 04, 2008, 07:09:01 PM »
 :o  UH OH...
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