Search found 4 matches

by gazza
Sat Oct 06, 2018 8:39 am
Forum: SDR Antennas
Topic: Loop Construction
Replies: 9
Views: 35104

Re: Loop Construction

Many thanks for the ideas guys, just demonstrates the ingenuity shown by members of this forum and or my own lack of imagination. Unfortunately I dont have access to a large barrel to use as a template or anything similar, and dont possess a workmate, however since approaching my local engineering c...
by gazza
Thu Oct 04, 2018 8:36 am
Forum: SDR Antennas
Topic: Loop Construction
Replies: 9
Views: 35104

Re: Loop Construction

Hi, That looks like its 10mm and easily bent. For outside use, I think you would need minimum of 15mm tubing. I have been able to locate a local engineering company who roll in aluminium not copper and they can do it but their smallest tooling diameter is 25mm, which looks to be about the same size ...
by gazza
Tue Oct 02, 2018 7:48 am
Forum: SDR Antennas
Topic: Loop Construction
Replies: 9
Views: 35104

Re: Loop Construction

Thanks for the replies. I have now come to the conclusion that I need to find a local engineering company who can roll tubing. It is actually for an untuned loop but of the shielded variety described by Daveb on this forum, and credited to PA0FRI, so a non metal loop will not do. I have built a smal...
by gazza
Mon Oct 01, 2018 12:23 pm
Forum: SDR Antennas
Topic: Loop Construction
Replies: 9
Views: 35104

Loop Construction

Hi
Does anyone have a method for bending 15mm copper tubing to make a 1m diam loop?
I can make this in two pieces but have still not found a satisfactory method of achieving a perfect radius.

Gazza