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Message |
    
Freebird
Intermediate Member
Username: Freebird
Post Number: 196
Registered: 1-2003
| | Posted on Sunday, February 13, 2005 - 6:04 pm: | 
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Does anyone know how many watts a 102" steal whip can handle?thanks |
Mikefromms
Intermediate Member
Username: Mikefromms
Post Number: 446
Registered: 6-2003
| | Posted on Sunday, February 13, 2005 - 6:18 pm: |
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It depends on the coax you choose. I think it could handle as many watts as the coax you select. 10,000 watts probably.
mikefromms |
Sodapop
Intermediate Member
Username: Sodapop
Post Number: 231
Registered: 12-2001
| | Posted on Sunday, February 13, 2005 - 6:32 pm: |
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Yup, it should handle alot. More then anyone really needs to run, but that's just my two cents. I found when I ran a steel whip, it was one of the best mobile antennas I ever had. It should be all that and a bag of chips! *G* Ok, so I think I am funny tonight, what can I say!
** Yaesu is king!! *** |
Racer X (Unregistered Guest)
Unregistered guest
| | Posted on Sunday, February 13, 2005 - 6:57 pm: |
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They're used in keydowns with rediculous amounts of power. If they can handle all the power the Suburbans with supercharged 454s can generate in a keydown, I would imagine they can handle whatever you could put on the street.
I agree with Mikefromms - the coax would be the limiting factor. Hint - If you're using hardline in your mobile, you might have RF addiction. Seek help!
Is anyone using PTOs at keydowns yet? I'd start worrying that the crankshaft pulley would crack off with some of the set-ups I've seen used. |
Coyote
Member
Username: Coyote
Post Number: 98
Registered: 11-2004
| | Posted on Sunday, February 13, 2005 - 7:14 pm: |
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Racer X.. are you saying a Power Take Off unit hooked to a generator to produce enough power to run some of those gene fry'n amps? |
Racer X (Unregistered Guest)
Unregistered guest
| | Posted on Sunday, February 13, 2005 - 8:58 pm: |
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Coyote - Yeah. I don't know why they haven't done it yet - if they aren't doing it - it just makes sense. A PTO would better handle the torque than a pulley. Then they could produce enough power to properly alter their genetic code instead of just messing around and causing damamge a little at a time. |
Coyote
Intermediate Member
Username: Coyote
Post Number: 101
Registered: 11-2004
| | Posted on Sunday, February 13, 2005 - 10:10 pm: |
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Racer X, What about one of those diesel powered military geny's? It would still be considered mobile since it could be hooked to the back and pulled. Or does it have to stay contained in the same vehicle to qualify during contest? |
Racer X (Unregistered Guest)
Unregistered guest
| | Posted on Sunday, February 13, 2005 - 10:44 pm: |
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Coyote - You'd have to ask a participant about the particulars of the competition. I plan to have children one day and don't run amplifiers mobile. |
Karatebutcher
Senior Member
Username: Karatebutcher
Post Number: 1858
Registered: 7-2002
| | Posted on Monday, February 14, 2005 - 9:54 am: |
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The steel Whip is wonderful, I always use it at the lake in the winter time when the water is really low and I drive down to the bed, it gets out where my regular antenna does not, I have used 200 watts with her |
Hotwire
Member
Username: Hotwire
Post Number: 65
Registered: 1-2005
| | Posted on Monday, February 14, 2005 - 10:31 am: |
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Since we are talking about health and RF radiation........I was talking to a truck driver one day. His antennas mounted on the mirror very close to his person and running a significant amount of power. He told me that his vision blurred while transmiting. What a mental case he was. Guess thats were a license makes since. Education about RF radiation. |
Stickshift
Intermediate Member
Username: Stickshift
Post Number: 189
Registered: 7-2003
| | Posted on Monday, February 14, 2005 - 12:48 pm: |
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Since that antenna is cut for CB, it will easily handle the 12 watt pep power limit. |
Kd4amg
Intermediate Member
Username: Kd4amg
Post Number: 158
Registered: 6-2003
| | Posted on Monday, February 14, 2005 - 4:43 pm: |
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Just be sure you do not touch the 102" whip while running your amp...you will let go of it faster than you grabbed ahold of it...ok yes !! |
Freebird
Intermediate Member
Username: Freebird
Post Number: 202
Registered: 1-2003
| | Posted on Monday, February 14, 2005 - 5:15 pm: |
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i really dont like truck drivers all they do is talk when you're talking on you're home channel and they dont care.11 meters would be alot better if it wasnt for truck drivers. |
Freebird
Intermediate Member
Username: Freebird
Post Number: 203
Registered: 1-2003
| | Posted on Monday, February 14, 2005 - 5:15 pm: |
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i really dont like truck drivers all they do is talk when you're talking on you're home channel and they dont care.11 meters would be alot better if it wasnt for truck drivers. |
Tech808
Moderator
Username: Tech808
Post Number: 4852
Registered: 8-2002
| | Posted on Monday, February 14, 2005 - 6:21 pm: |
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Freebird,
And just think, if it was not for truck drivers you would not even have a radio, or antenna or coax to talk on.
And there would be No Copper Forum for you to post on without those truck drivers as Copper could not get products in or out to people to help pay for the Forum here. 
Last I heard is Channel 1 thru 40 is OPEN for everyone and anyone who owns a CB to use any time they choose to use it.
And I sure do like those truck drivers when we are waiting on them to deliver new radios and radio goodies to me and the 1st Sargant from Copper. 
Lon
Tech808
CEF808
N9OSN 
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Usa2112
New member
Username: Usa2112
Post Number: 9
Registered: 2-2005
| | Posted on Monday, February 14, 2005 - 6:22 pm: |
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If it weren't for truck drivers you'de still be waiting for that rig to show up at your door!and all that food you keep around the house. |
Truckerdon
New member
Username: Truckerdon
Post Number: 9
Registered: 5-2004
| | Posted on Monday, February 14, 2005 - 7:39 pm: |
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I guess he'll have to use leaves instead of TP. I won't go any further. I realize some Trucker's think they own the Freq. I hear also some local can be a pain in the ears as well. |
Kd4amg
Intermediate Member
Username: Kd4amg
Post Number: 159
Registered: 6-2003
| | Posted on Monday, February 14, 2005 - 8:08 pm: |
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nah...no leaves...just old radio shack - sears - copper catalogs !! he he he |
Supertech1
Junior Member
Username: Supertech1
Post Number: 20
Registered: 1-2005
| | Posted on Monday, February 14, 2005 - 9:44 pm: |
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HEY!!! I run hardline in my mobile.
From the amp to the antenna is 2 feet of NASA grade all copper jacket-form to fit rigid .390" dia. with silver plated solid copper center conductor-solid teflon insulated(real teflon that doesn't melt..even with a blowtorch) I welded(sweated) the pl-259 connectors on with a blowtorch. The feedline from my galaxy dx33hml to my messenger m1200 is also hardline but only .250" dia.(6 feet of it)
I chose this coax because of the .001db loss @ 100 ft.( and it was free to me!) at full power 1000 honest watts, I get no bleed-over on my stereo or cd player. No other coax performed like that. And I don't get those rf headaches anymore.
That doesn't make me a rf-o-holic, does-it?! |
Hotwire
Member
Username: Hotwire
Post Number: 69
Registered: 1-2005
| | Posted on Tuesday, February 15, 2005 - 12:43 am: |
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Hey Freebird I know how you feel because I live one mile from I-65 and 3 miles from 3 truck stops. Although I always hear truckers non stop its mostly 99% on channel 19. Not all truck drivers act like that, most are very professional.Heck I have 39 other legal channels and hundreds of others. Those mobiles dont bother my base one bit.
Hey there Supertech1!!! Where can I buy some of that cool space coax? That could make a good Advil commercial. LOL |
Racer X (Unregistered Guest)
Unregistered guest
| | Posted on Tuesday, February 15, 2005 - 7:53 am: |
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Possibly a recovering one! |
Sg569
Member
Username: Sg569
Post Number: 90
Registered: 12-2004
| | Posted on Tuesday, February 15, 2005 - 3:18 pm: |
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hey supertech,
Where ya get yer hands on coax like that? I want some too.
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Supertech1
Junior Member
Username: Supertech1
Post Number: 28
Registered: 1-2005
| | Posted on Tuesday, February 15, 2005 - 10:12 pm: |
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I work for a company that builds satellites.
They had 180' of the stuff that they decided they didn't need sooo...they threw it away in the trash!
So I took the whole spool home with me(along with other various sizes and lengths) and have already used about 100' of the .390"(fits pl259 connectors perfect, like it was made for it).
I set-up a friends base station, he is running 80' and the db loss is so low, the antenna analyzer couldn't measure it! It is like the radio is screwed into the bottom of his antenna.
The coax is 50 ohms rated to run 30 ghz with a 1.5 db loss per 100' power rated 1000w(@20 ghz). When I plotted the curve for 27 mhz, the loss was negligable at 100 mhz. The tolerance is so tight, the manufacturer doesn't even state that it can be used at 27 mhz---their lowest advertized operating frequency is 5 ghz.
It was just a test to see if it can be used on the base at that freq. and lo-and-behold, it worked! Much better than expected- 1:1.1 match(wow!).
When he runs about 40 watts, and walks on operators running 500+...it's amazing! The most we have pushed through it so far is 2kw and it's is perfectly stable--doesn't even get warm after hours of hammering--and at that power level, we are invinceable!
Price in the catalog, where it was purchased, was 50 dollars per foot(1985 prices).
After also doing a couple of mobiles, I figure I have about 80' left over. Enough to do my base station when the time comes. The 1/8", 1/4" and 3/8" stuff was some remenance pieces various length up to 4-6 ft but I already have used that up to make patch cords. It was a once in a lifetime score I just couldn't pass-up.
There are company's out there that make the stuff--you just have to shop around. Maybe you can find some at a trw or ham swap meet. It's called semi-rigid or rigid microwave coax. They also make spline(air-core) but because of humidity and weather concerns, I wouldn't recommend using that.( The spline type is designed for use in space.)
This hardline coax is design to work in extreme environmental conditions( high uv and radiation, -270 to +600 degree f) zero atomosphere--perfect for use in the california high desert.
7/8" heliax w/tnc connectors is probably the closest you can come to it for resonable cost/performance ratio.
The operator using this coax on his base is #525 polarbear (alas 25) So. Calif. high mojave desert. CH 25-26-19-14 am and 37-38 ssb. He talks alot of skip in the morning--most every day.
Always remember.............
******TUNE FOR MAXIMUM SMOKE********** |
Bullet
Intermediate Member
Username: Bullet
Post Number: 375
Registered: 7-2003
| | Posted on Wednesday, February 16, 2005 - 4:24 am: |
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when your stainless steel whip turns from a dull red/orange to a brite white color id stop! thats getting close to the temperature that it will start to liquify 2200 deg f+ till then hammer it! it will take all youll ever feed her.
your coax will melt long before the antenna gets hurt |
Hotwire
Member
Username: Hotwire
Post Number: 79
Registered: 1-2005
| | Posted on Wednesday, February 16, 2005 - 7:59 am: |
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Amazing.....TRUELY amazing. I think I'll stick with my RG8. At 50 greenstamps a foot I'll need at least 1000 dollars worth. That would make my hobby more of an obbsession than it already is. Hey SuperTech just think of the cash you could make just pullin that stuff out of the dumpster! If your work didnt want such exspensive coax, just said,get it outa here..........I wonder what kinda better stuff there packin? Maybe Fiber Optic 50 ohm coax? OOOOOHHHH!!!! I'm in the wrong work business. |
Racer X (Unregistered Guest)
Unregistered guest
| | Posted on Wednesday, February 16, 2005 - 4:32 pm: |
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That's a sweet salvage find. I've heard of amateurs using scraps of 75 ohm coax that they've gotten from cable companies, but never something this cool.
Fiber optic 50 ohm coax? Fiber optic cable transmits light - not RF. I think attenuation is more of a factor with fiber optic than impedance. |
Boxcar
Intermediate Member
Username: Boxcar
Post Number: 339
Registered: 4-2002
| | Posted on Thursday, February 17, 2005 - 9:25 pm: |
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Is that RG-9913U better than the thick RG8U coax? |
Cbblackbeard
Intermediate Member
Username: Cbblackbeard
Post Number: 160
Registered: 12-2003
| | Posted on Thursday, February 17, 2005 - 10:51 pm: |
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Well said Lon. |
Supertech1
Junior Member
Username: Supertech1
Post Number: 33
Registered: 1-2005
| | Posted on Thursday, February 17, 2005 - 11:52 pm: |
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You wouldn't believe the stuff they toss-like full computer systems. mega lbs of aluminum. also tools, soldering stations, powertools, lots of titanium fasteners-by the bucketfull. My latest score was qty.5 - 10 lb spools of teflon insulated silver strain wire of 16,18,20,24,26 awg.wire sizes---like the stuff we use to wrap input/output transformers in linears!! 1 spool of 20 awg wire has over 2800 feet of wire on it!! and I also scored 10# spool of 16 awg. magnet wire and 20 lbs of silver solder--all past shelf life...that's why they toss it.(salvagers' dream)
Test equipment, power supplies and spacecraft parts are off-limits though...i guess they had to draw the line somewhere. Everything I carry out has to be approved by security before it is allow to leave the plant. Everything of REAL value is auctioned off before they decide to dump.
********TUNE FOR MAXIMUM SMOKE***************** |
Hotwire
Member
Username: Hotwire
Post Number: 91
Registered: 1-2005
| | Posted on Saturday, February 19, 2005 - 10:13 am: |
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I know guys. It was a joke. I was just being silly. |
Allagator
Advanced Member
Username: Allagator
Post Number: 553
Registered: 9-2002
| | Posted on Sunday, February 20, 2005 - 4:59 pm: |
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hey Hotwire !!!!
as many watts as you can shove to it till it melts down !!! HE HE HE !!!! |
Hotwire
Intermediate Member
Username: Hotwire
Post Number: 104
Registered: 1-2005
| | Posted on Sunday, February 20, 2005 - 6:30 pm: |
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Now your talking about a cancer machine!!!Or is that a tanning bed? |
