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Message |
    
Bigbluesman
New member
Username: Bigbluesman
Post Number: 1
Registered: 2-2014
| | Posted on Thursday, February 20, 2014 - 3:13 pm: | 
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Hi. I have a conversion van with the fiberglass roof. Antennas are not working! A ngp antenna sounds nice, but I havn't found one that I can run 400 or 500 watts through..suggestions? |
Tech237
Moderator
Username: Tech237
Post Number: 1750
Registered: 4-2004
| | Posted on Friday, February 21, 2014 - 11:24 am: |
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1) Take a look around for a 27Mhz Marine antenna, which may sometimes work.
2) stick a sheet of aluminium (at least 3ft square) under the roof inside the van and mount the antenna through that.
3)Mount a 9ft whip on a ball mount high up on the side of the van.
Tech237
N7AUS
God made me an athiest, who are you to question his wisdom?
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Tech833
Moderator
Username: Tech833
Post Number: 2287
Registered: 8-2002
| | Posted on Monday, March 03, 2014 - 12:47 am: |
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I would suggest using a side mount and mounting the antenna to the side of the van as high as you can get and still be on the metal. Use a top loaded or spiral loaded fiberglass antenna for best results.
The NGP (No Ground Plane) marine antennas are very narrow-banded. OK if you just run CB, but you mentioned running an amplifier, so I assume you want to run the ham bands. A marine antenna is way too narrow for ham bands.
Don't run an amplifier on the CB band.
Your radio 'Mythbuster' since 1998
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