[Elecraft] Mobile antenna breakthrough?

[Fred Jensen]

The now-defunct Southern Pacific Railroad, acquired by Union Pacific 20 
or so years ago, used DDRR VHF antennas on their trackside signaling 
equipment.  They were cast steel [maybe brass under the finish], very 
low profile on top of the equipment box, small [they looked like a 
handle], and about as indestructible as the steel box they were on.  
Indestructability is fairly important with stuff trackside in the middle 
of nowhere.  With antennas however, electrical size matters.  Rear 
window size at VHF is big ... not so much on 40 meters.

So, does my 41.4 meter wire at 1.8 meters AGL classify as a DDRR?

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 8/20/2017 6:52 PM, Ken G Kopp wrote:
> Larsen makes a VHF mobile antenna that mounts on a vehicle window and is
> fed via a capacity coupling arrangement mounted on the inside of the glass.
>
> Some of you have been talking about an antenna that's known as a DDRR and
> perhaps not realizing it.
>
> Google is your friend ....
>
> 73
>
> Ken - K0PP
>
>
>
>
>
> On Aug 20, 2017 19:27, <riese-k3djc at juno.com> wrote:
>
>> Subject: Re: [Elecraft] Mobile antenna breakthrough?
>>
>> someone makes a rear window antenna ,,,, held with sticky pads to the
>> inside
>> of the glass,, worked well on 144
>>
>> Bob K3DJC
>>
>>
>> On Sun, 20 Aug 2017 17:15:20 -0700 Phil Kane <k2asp at kanafi.org> writes:
>>> On 8/19/2017 9:26 PM, Doug Smith wrote:
>>>
>>>> Yes, I was thinking along the same lines ? that copper
>>> ?conductive tape? stuff.
>>>> It could be mounted to the outside of the carrier and would look
>>> like stylish racing stripes!
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