[OZAPRS] HF antenna on car - sorted

Matthew Cook vk5zm at bistre.net
Tue Dec 5 10:58:33 AEDT 2017


Thanks for sharing that URL....

He is very wise and had my attention from;

"There are *no* viable methodologies to achieve positive gain with an HF
mobile antenna"

So true.  I actually tested one of the first prototypes of that Stealth
Telecom loop that George made, funny he came to the same conclusion.

73

Matthew
VK5ZM

On 5 December 2017 at 09:59, Glen English VK1XX <
glenlist at pacificmedia.com.au> wrote:

> yea, essentially, RF wise, without  strap = without ground
>
> which is nearly exactly like without the negative lead of a light bulb
> connected = no light...
>
> Dont expect miracles with a base loaded 1.4m whip.
>
> Expect efficiency to be around 10%
>
> rather than keep writing, Andrew, there is this compendium online, worth a
> read :
>
> http://www.k0bg.com/myths.html
>
> it's pretty right. Alan is a good engineer with a practical understanding.
>
>
>
> On 5/12/2017 10:14 AM, Andrew Rich wrote:
>
>> Without strap - 5.06:1 at 10.147 MHz
>>
>> With strap - 1.16 : 1 at 10.147 MHz
>>
>> Now we are cooking with gas
>>
>> Andrew
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>
>
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