One of my colleagues at HP told me he once made a CB antenna by feeding
the front window of his car between the rear-view mirror and the dash.
Basically a big slot antenna. He claimed it worked great. I don't
remember how he said he matched it to 50 ohms.
Alan N1AL
On 07/15/2017 05:53 PM, Wayne Burdick 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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