Ozipole

I recently bought an Ozipole kit from The Mid North Coast Amateur Radio Group. This page is about my experiences with this kit.

Click Here to see how I mounted the ozipole

The kit was purchased for two reasons. 1) I had limited time to put one together.. 2) I have started a radio club at my school, and I was evaluating the kit as a potential project for my students. My summary of this kit can be found below the pix.

The Parts: The parcel arrived with all parts intact.

The instructions: Read these carefuly. I read them twice before I started construction. They are detailed and easy to follow.

The Tuning Guide: I made a couple of copies of this in case I made a mistake.

Getting ready: I put the telescopic whips in first. In this pic, one of them has the end cap installed, the other doesn't.

Getting ready - 2: Install the solder tags. Follow the instructions and you cant go wrong.

Startng the coil wind: I used some double sided tape to get the winding started. The tolerance of the kit is very fine. Wind the turns tightly or you won't fit them all in.

Winding underway: Keep a check on those turns, especially the 80 required for the first coil. Its a pain re-counting them.

The finished coils: Nearly done! It took me about an hour and a half to get to this point as I got both sides of the dipole ready for coil winding before I actually started to wind the coils.

The centre T connector: Easy to construct and complete.

These are useful! They are called "helping hands" and proved invaluable for soldering the aligator clips on.

The finished product: It took me about 2 and a half hours to complete the construction.

The "workbench": the XYL was away shopping with our daughters. I took the opportunity to use the kitchen bench for something useful. hi hi.

Summary

1) The kit is easy to follow and came with all parts as described in the instructions

2) Read the instructions first! It may well save you some angst later.

3) When you place the solder tags, rotate the nuts so that the "flat" side of the nut is perpendicular to the length of pipe. This way the coils will fit exactly, The holes are drilled with very fine tolerance.

4) Make sure you count the coils. I didn't and had to re-count a couple of times. Very time consuming and irritating.

5) The kit is suitable for inexperienced constructors. Soldering skills are minimal, but care needs to be taken with coil winding.

6) I used some double sided tape at the start and finish of the coils. This was especially useful for the 80 turn coil at the start.

7) The kit requires minimal equipment. I delibrately used my kitchen bench, even though I do have a workshop that is more than capable of accomodating a project like this.

8) Could you do it cheaper? Of course, but I was evaluating it for ease of construction by my students.

9) Is it worth the money? Yes! Given that all the holes are drilled to very fine tolerance, all parts are supplied, and all you have to do is follow the instructions.

10) I have nothing but praise for this kit. Instructions and parts are first rate.

Tuning

Tuning is very easy. It is accomplished by moving the aligator clips to the appropriate coil and then adjusting the telescopic whip for best SWR. The instructions come with suggested whip extensions. I found that my measurements were within a couple of cm of those given in the instructions.

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