[Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

[Bob McGraw K4TAX]

Regarding the defrost heat element, there's two terminals, one on either 
side.  However with the resistance of the defrost wiring in the window, 
it might be more like a dummy load.  Of course one could just feed one 
side against the auto body, unless one drives a Corvette which is mostly 
plastic.   grrrr

Seems I recall a DDRR antenna which was a low profile, roof mountable 
antenna.   The 40M version would be a bit large with a diameter of some 
9 ft, although one might reduce the size and still make a 40M - 10M of 
reasonable dimensions with reasonable efficiency.

73

Bob, K4TAX

K3S s/n 10163



> On Jul 15, 2017 7:54 PM, "Wayne Burdick" <n6kr at elecraft.com> wrote:
>
>> I’m dealing with one of the last unsolved problems in amateur radio: how
>> to operate HF mobile without an antenna. At least not one that, according
>> to some vehicle co-owners/spouses, would defile your new sedan.
>>
>> For 10 bonus points that have only philosophical value, your challenge is
>> to create an invisible mobile antenna and actually make a QSO on it. For
>> practical purposes (i.e., not frying the car or passengers) let’s say the
>> maximum power level is 10 watts. The bands of interest are 40-10 meters.
>>
>> Here are some ideas I’m considering:
>>
>> - mag loop in the rear window
>> - thin wire loop on a roof rack
>> - gamma match to the entire roof
>> - surface acoustic waves
>> - prayer
>>
>> Other ideas?
>>
>> Yes, I know this violates the laws of physics and bioethics. And I fully
>> expect the car to generate debilitating levels of RFI. But isn’t this the
>> least you’d expect from an unsolved problem?
>>
>> Thanks in advance,
>>
>> Wayne
>> N6KR
>>
>>
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