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[aprssig] RE: VH-SJS Aeronautical mobile

Joe Della Barba joe at dellabarba.com
Fri Nov 10 14:33:57 UTC 2006


In that case try an NMO mount with a quarter wave antenna. You can bend 
it back to whatever angle you want. If the belly is not aluminum you 
will need a metal backing plate for both the ground plane and mechanical 
strength. If the airplane is fiberglass don't bother with any of this. 
Make a 2 meter dipole and just fasten it inside the airplane somewhere.
73
Joe

Andrew Rich wrote:
> experimental class
>
> -----------------------------------------
> Andrew Rich
> Amateur radio callsign VK4TEC
> email: vk4tec at tech-software.net <mailto:vk4tec at tech-software.net>
> web: http://www.tech-software.net
> Brisbane AUSTRALIA
>
>
>
> -----Original Message-----
> From: Joe Della Barba [mailto:joe at dellabarba.com]
> Sent: Friday, 10 November 2006 11:35 PM
> To: vk4tec at tech-software.net; TAPR APRS Mailing List
> Subject: Re: [aprssig] RE: VH-SJS Aeronautical mobile
>
>
> Unless the airplane is experimental you will have issues with legally
> making your own antenna. Antennas for airplanes that cover 2 meters are
> commercially available for $. Cheaper is to get a "bent wire" VHF comm
> antenna and trim it down some for 2 meters. 2 seconds work with a hacksaw :)
> I get out quite well with a rubber duck suction-cupped to a window.
> 73
> Joe
> N3HGB-5 maritime mobile
> N3HGB-7 aeronautical mobile
>
> Andrew Rich wrote:
>   
>> Need some suggestion for aerial mount.
>>
>> Aerial will come down for a bit and then bend back - parrallel to belly.
>>
>>
>>
>>
>> -----------------------------------------
>> Andrew Rich
>> Amateur radio callsign VK4TEC
>> email: vk4tec at tech-software.net <mailto:vk4tec at tech-software.net>
>> web: http://www.tech-software.net
>> Brisbane AUSTRALIA
>>
>>     -----Original Message-----
>>     *From:* Andrew Rich [mailto:vk4tec at tech-software.net]
>>     *Sent:* Friday, 10 November 2006 7:04 AM
>>     *To:* TAPR List
>>     *Cc:* ozaprs
>>     *Subject:* VH-SJS Aeronautical mobile
>>
>>     Gudday
>>
>>     We are in the process of fitting out a plane with APRS.
>>
>>     It will have a
>>
>>     GARMIN GPS 196
>>     MAXON Data radio (5W)
>>     TinyTrak3
>>     RG58
>>     N-TYPE panel mount
>>     Home brew 1/4 wave bent over whip.
>>
>>     Callsign will most likely be VK4HDA-9
>>
>>     -----------------------------------------
>>     Andrew Rich
>>     Amateur radio callsign VK4TEC
>>     email: vk4tec at tech-software.net <mailto:vk4tec at tech-software.net>
>>     web: http://www.tech-software.net
>>     Brisbane AUSTRALIA
>>
>>
>>
>> ------------------------------------------------------------------------
>>
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>>
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>>     
>
>
>
>
>   




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