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Locked HIMARS transport

 

Hi All,

I have noticed that the HIMARS transport vehicles used in Ukraine all have what appears to be a double loop antenna on them. Do you think that they are using a double loop that is connected in parallel to lower the antenna resistance and increase the bandwidth since the elements appear to be rather thin in tube diameter, or are they using a series connected pair of loops to lower the overall frequency of operation?? What are some of the more common HF frequencies they could be using?

--jeff
wb7aht
 

I think they are these antennas...

?
?

73 de


? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?-Manolo-
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?(EC4AA)
 

This has previously been discussed in detail on the Magloop IO group.

/g/MagLoop/topic/91522418#9938

Regards,

Martin
 

"Polarization" is a property of the electromagnetic wave that is transmitted, and has nothing to do with the direction your signal goes. You will have a electric field, and a magnetic field that is perpendicular to the electric field, and all that makes you your electromagnetic wave. The convention is to use?the orientation of?the electric field to determine the polarization of the wave. And even though your signal goes straight up,?the electric field is still parallel to the earth's surface, and therefore you have a horizontal polarization.

Karl Heinz - K5KHK
 

Another silly question, if I lay a single turn loop horizontal to the ground will it receive NVIS?

Yes, the donut pattern will be on its side and receive high angle waves.? mount above the ground,?
--
Jim, KA6TPR
 

A small loop - <10% circumference of a full wavelength at the highest frequency of interest - exhibits the nulls in both directions perpendicular to the plane containing the loop.? So, laid horizontally on the soil surface, the loop will null NVIS signals.

Dave - W?LEV?


On Wed, Sep 7, 2022 at 6:57 PM Starsekr via <Starsekr=[email protected]> wrote:
Another silly question, if I lay a single turn loop horizontal to the ground will it receive NVIS?

Yes, the donut pattern will be on its side and receive high angle waves.? mount above the ground,?
--
Jim, KA6TPR



--
Dave - W?LEV
Just Let Darwin Work
 

Hi, is it possible to have a picture of an HIMARS transport with the loop antenna?

Thanks and 73

Gian, I7SWX
 

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HIMARS Image in Ukraine.

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The HIMARS built for other countries appear to have 2 verticals on either side of the transport vehicle.

?

--jeff
 

Hi Jeff,

thanks for the prompt replay and picture. I am sure many magloops lovers will get RF excited...hi

73

Gian
I7SWX

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