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Dual Band Tape Measure Yagi

Mike Hoblinski
 

Since the aluminum extrusion has slots on all for sides I suppose you could
rotate the 440 ellements 90 degrees. Keeping the same spacing for all elements you might
have to reposition the 144 or 440 sets to avoid them running touching each other.

Mike
N6IMF

Max Baker
 

Yes, I agree.  There are tradeoffs.  There are a number of commercially available dual-banders that use a similar configuration with two independent yagis in the same plane, so it likely isn't a totally onerous design. 

From:  M0PWX
Nov 17  

The downside of them both in the same plane is that there is more interaction between the 2m and 70cm elements than if they were 90deg out of line

 

Peter

M0PWX

M0PWX
 

The downside of them both in the same plane is that there is more interaction between the 2m and 70cm elements than if they were 90deg out of line

 

Peter

M0PWX

 

M0PWX Grabber Page (qsl.net)

 

From: Max Becker

 

I like this.  One of the things i like about the Elk sat antenna, versus the Arrow, is that it is flat and is easier to transport assembled.  Having both 2 meter and 70 cm in the same plane makes this antenna equally mobile.  

 

Max Baker
 

I like this.  One of the things i like about the Elk sat antenna, versus the Arrow, is that it is flat and is easier to transport assembled.  Having both 2 meter and 70 cm in the same plane makes this antenna equally mobile.  

Mike Hoblinski
 

I remember the simple and cheap Yagi built before the tape measure antenna came along.
The long square wooden boom with rods. I think the Yagi in the video has a lot of potential
for experimenters.  Using the aluminum extrusion you can experiment with element spacing by
just sliding the elements. The tape measure elements seem to be easily removed so if you make
a mistake cutting and turning them they are easily replaced. The 3D printed brackets could be
reworked to accept an arrow shaft. Or you could lighten the weight of the antenna by drilling holes
in the aluminum extrusion boom. 

I also wonder if the same design could be reworked into an Elk style antenna. One of the fun things
about ham radio is experimentation. And with these tape measure style antennas you're not out too much
money if it doesn't work out. I was in a local thrift store and they had a whole box of old tape measures for
2 to 3 dollars each.

Mike
N6IMF 



On Wed, Nov 16, 2022 at 7:28 PM Clint Bradford via groups.io <clintbradford=mac.com@groups.io> wrote:
Also check out the dual-bander on the ANTENNAS page at work-sat.com ...


On Nov 16, 2022, at 8:28 AM, Mike Hoblinski <hobergenix@...> wrote:

I have seen Tape Measure antennas but not sure if their was a dual band version.
I ran across this one. This design dose use some 3D printed parts and Aluminum
extrusion for the boom. 

https://www.instructables.com/Diy-Tape-Measure-Yagi-Antenna-for-Ham-Radio/?utm_source=newsletter&utm_medium=email

Mike
N6IMF

Clint Bradford
 

Also check out the dual-bander on the ANTENNAS page at work-sat.com ...


On Nov 16, 2022, at 8:28 AM, Mike Hoblinski <hobergenix@...> wrote:

I have seen Tape Measure antennas but not sure if their was a dual band version.
I ran across this one. This design dose use some 3D printed parts and Aluminum
extrusion for the boom. 

https://www.instructables.com/Diy-Tape-Measure-Yagi-Antenna-for-Ham-Radio/?utm_source=newsletter&utm_medium=email

Mike
N6IMF

Mike Hoblinski
 

I have seen Tape Measure antennas but not sure if their was a dual band version.
I ran across this one. This design dose use some 3D printed parts and Aluminum
extrusion for the boom. 

https://www.instructables.com/Diy-Tape-Measure-Yagi-Antenna-for-Ham-Radio/?utm_source=newsletter&utm_medium=email

Mike
N6IMF

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