Junkbox Refilling

[va7aax]

I am about to refill my junkbox. I see that Kits And Parts has some good toroids deals. I want to buy all of the commonly used toroids in RF homebrewing.Can someone tell me which i should buy?

73 de va7aax

[ky5u]

A toroid is not a toroid is not a toroid. They are made for different frequencies. (http://partsandkits.com/xtoroids.html) Decide what frequencies and power you will be working with and stock up on those first.

Good luck.

[VK2TIL]

A good but difficult question; however full your junquebox, it will fail to disgorge a part needed on any Sunday!

I see that Kits & Parts has a toroid kit;

http://kitsandparts.com/toroid-kit.htm

This has a selection of the most-used ones.

If you buy this you will notice after a while that you are using some more than others; you can then re-order the ones you are low on to keep your stocks up.

I check my toroid stock every six months or so and stock-up where necessary.

And; do not get them mixed-up!

Iron-powder cores are painted in different colours so can usually be identified; ferrites, like the Model-T, come in only one colour. In the case of ferrites, it's grey.

I bought a few little (100ml) tins of different-coloured enamel and mark my stock with a colour code;

http://img100.imageshack.us/img100/7281/toroidsqr4.jpg (http://imageshack.us)

I know that these are, from left, 73 (cream/yellow), 72 (yellow/blue) and 43 (yellow).

As soon as I receive new toroids I mark them. I put a blob of paint on with a toothpick and let it dry completely before putting each size/material of toroid in small "zip-top" poly bags marked with the size & material.

Hobby/craft shops should have paint in tins or tubes; get good enamel so it won't come-off the toroids with handling or time.

[VK2TIL]

This link may interest you;

http://www.qrp.pops.net/workshop.asp

[va7aax]

Thank you very much, . kits and parts also has some SA612's . will grab those too

73 de va7aax

[VK2TIL]

I was going to suggest that you look at some of DIZ' other items.

He has J310s and 2N5109s at reasonable prices; 5109s are not cheap these days but his are much better than ebay prices. Both of these devices are very common in homebrewing.

He also has a very nice RF amplifier kit for only $8; considering that the supplied parts include a 2N5109, a toroid and the PCB that's very cheap!