Tonna 23 cms antenna

Ideas, technical topics, help and discussion for ATV enthusiasts
Forum rules
This forum is run by the BATC (British Amateur Television Club), it is service made freely available to all interested parties, please do not abuse this privilege.

Thank you
Post Reply
g6crf
Posts: 40
Joined: Mon May 12, 2014 11:20 am

Tonna 23 cms antenna

Post by g6crf » Sun Mar 29, 2020 3:50 pm

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
Posts: 1
Joined: Sun Mar 29, 2020 5:01 pm

Re: Tonna 23 cms antenna

Post by tinwash » Sun Mar 29, 2020 5:06 pm

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

M0SKM
Posts: 294
Joined: Sun Jul 13, 2014 3:15 pm

Re: Tonna 23 cms antenna

Post by M0SKM » Sun Mar 29, 2020 5:09 pm

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
Posts: 40
Joined: Mon May 12, 2014 11:20 am

Re: Tonna 23 cms antenna

Post by g6crf » Sun Mar 29, 2020 8:40 pm

Excellent thank you.
Regards
Terry

radiogareth
Posts: 516
Joined: Wed Jan 06, 2016 9:46 am

Re: Tonna 23 cms antenna

Post by radiogareth » Mon Mar 30, 2020 12:03 pm

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

User avatar
G1LPS Terry
Posts: 139
Joined: Mon Mar 10, 2008 10:33 pm

Re: Tonna 23 cms antenna

Post by G1LPS Terry » Mon Mar 30, 2020 1:23 pm

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

BR
Terry

g6crf
Posts: 40
Joined: Mon May 12, 2014 11:20 am

Re: Tonna 23 cms antenna

Post by g6crf » Mon Mar 30, 2020 6:00 pm

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

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

Cheers
Folks

Post Reply

Return to “General ATV Discussion”