Tonna 23 cms antenna

[g6crf]

Hi all I have lost a couple of elements off of my tonna 23 cms antennas.

Unfortunately they dont supply the amateur market anymore so I am going to 3d print the supports and use braising rod for the elements but I don't know what the length of the elements should be.

Does anyone have the plans for these antennas or a link to where to download them.

Thanks
Terry

[tinwash]

hi i have a tonna 23 cms used at 12 49 atv 95 mm is the elent lenth if thats a help

[M0SKM]

Try here, I think there were different versions for narrow band and tv.
http://www.g1ogy.com/projects/tonna/tonna-mans.html

(Edit) You can download a PDF for the 23 element version here https://www.google.co.uk/url?sa=t&rct=j ... pxDQwKICAF

Use the PDF to work out what element colour you need and then use the chart for the 55 element to convert colour to length.

Steve

[g6crf]

Excellent thank you.
Regards
Terry

[radiogareth]

I've been meaning to do the CAD for these replacement stalks as every time I look at mine it loses another one! My printer is busy ATM making headbands for facemasks, but I should be able to reverse engineer the clip and test print one in PETG.
Gareth

[G1LPS Terry]

The file to print the support can be downloaded here:
https://www.thingiverse.com/thing:1585084

BR
Terry

[g6crf]

Thank you very much for the pointer to the 3d object.

Thats what I love about BATC, always someone to help.

Cheers
Folks