Kaosss
Management
Registered: 04-2008
Location: County of Flintshire, N. Wales
Posts: 1890
Karma: 10 (+10/-0)
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mobile aerial for mast?
I have a mast for mobile use but its not sturdy enough for my A99, not without guyropes anyway so was wondering if a mobile ant would fit on it, would the mast serve as the groundplane or would I have to put a ground plane onto the bottom of the ant?
The mast is 50 foot and whips around a lot with a bit of wind. I now have a metal roofbox on the mobile and cant get swr down and its a big job to take it off.
Al
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Al -163FB777 - N.Wales, UK
Kenwood TS-480SAT, TS590, MC-90, Yaesu FT1000D, FT2000D,RCI 2995dx, Heil 781, 5 eli beam, F/S G5RV, K40 when mobile, A99 for portable. Optima V3,Portapack. RM KL500-modded, PMR`s.Ranger 1k Amp
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11/Oct/2008, 11:12 pm
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tony147
Freebander
Registered: 04-2008
Posts: 211
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Re: mobile aerial for mast?
Hi Al, if you want to experiment a bit you could try welding a Lightweight plate to top of mast and put Mag mount on the Twig.
There should be enough metal to give you Ground plane?
Not sure how the direction path would go, maybe someone with more knowledge could let you know if its possible?
Cheers
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26FB147. Using Yaesu FT 897, Silver Rod and 6 foot Firestik
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13/Oct/2008, 9:01 am
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Kaosss
Management
Registered: 04-2008
Location: County of Flintshire, N. Wales
Posts: 1890
Karma: 10 (+10/-0)
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Re: mobile aerial for mast?
Cheers Tony, that would be easy, I never thought of that! May be able to use the A99 after all coz I found I can lock the top sections of the mast to stop them going up so would be quite stable then, will have to try it when I have a bit of spare time (not this week!) Seems ages since hollidays, am ready for another one now.
Al
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Al -163FB777 - N.Wales, UK
Kenwood TS-480SAT, TS590, MC-90, Yaesu FT1000D, FT2000D,RCI 2995dx, Heil 781, 5 eli beam, F/S G5RV, K40 when mobile, A99 for portable. Optima V3,Portapack. RM KL500-modded, PMR`s.Ranger 1k Amp
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13/Oct/2008, 3:04 pm
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26fb139
DX-pert
Registered: 01-2008
Location: Dudley west mids
Posts: 1275
Karma: 8 (+8/-0)
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Re: mobile aerial for mast?
i usually only extend my portable mast to around 15ft ,after all iam usually about 1500ft asl??
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139 in any GOOD group??
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14/Oct/2008, 8:59 am
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topbuzzuk
Big Cheese
Registered: 11-2007
Location: Wiltshire, UK
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Re: mobile aerial for mast?
thats it keith if your sat really high your antenna doesnt need to be so high off the ground. If i was going to use a 50 foot mast i think i would guy it, thats pretty high up and it would only take a gust of wind to bend it
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26FB118
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14/Oct/2008, 10:42 am
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26fb010
Accomplished DX-er
Registered: 01-2009
Location: BLACK COUNTRY
Posts: 574
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 Re: mobile aerial for mast?
use a £10 DIPOLE horzontally, works well as you can direct your signal where you want, or better still buy 2 and use one as a reflector
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7/Jan/2009, 12:31 pm
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26fb139
DX-pert
Registered: 01-2008
Location: Dudley west mids
Posts: 1275
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Re: mobile aerial for mast?
mind you al last time i was up the mynd ,i highered my anttenas and went up 3 s points to every one,now with the genny and my kl5oo or indeed the home coffee warmer ???
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139 in any GOOD group??
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7/Jan/2009, 2:26 pm
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26fb99
Accomplished DX-er
Registered: 08-2008
Location: Stoke on Trent North Staffs
Posts: 341
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Re: mobile aerial for mast?
kieth.just wondering if you know(i.e used a meter)if your alternator ever powered your kl500 up to full output?my kl400 seems to work fine with good reports but will only do 200 am/ssb.im ready for the mobile summer and have a genny on the van anyway so will eventually try it out with a big psu.could it be possible that 1 of my output trannys is dead or would it not even power to 200watts if this were true.cheers mate if you or anyone else can shed light on this.
brent 26fb99
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yaesu FT857d,rmkl500,wilson5,2element pubical quad(the BBq).split charger aux battery.170a truck battery,mfj 941 versatune2
100% mobile station
I got 99 Problems but a whip aint 1
Brent 26 Fox Bravo 99
73s
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7/Jan/2009, 7:56 pm
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