"So I am trying to build an up converter for an RTL SDR... Well im broke and I have diodes and all kinds of good stuff but I dont have any toroid rings... I scrapped some binoculars out of an old sony black and white CCTV crt used in the modulator box. I dont know the material nor do I care" ... "If I want to do this using binocular cores, Im guessing a pretwist 3 wires, 2 are half the length of the first and then I just pass those in a u shape around the binoculars center, and that is one turn."
You can't use a HF RF transformer up to 200 MHz. HF is basically 3-30 MHz. Look at schematics for your application. Lower frequencies require more turns. You learn a lot trying different approaches. Although you could also make an air core RF transformer, for HF you would need a lot more turns. I would figure out what impedance transformation you need (say from 50 or 75 ohms - to the input of the device you are using, if you know it.) But most important, don't worry that much for now, just get it working to start and then figure out the optimal matching transformer. In other words, just do it. If you can get your converter working so you can receive signals, then thats something to work with and the rest will be easier than you think.
You should be able to find exactly what you need at
http://kitsandparts.com/toroids.php for very little money. Binocular cores work very well in that kind of application. Low loss /more power transfer. A regular toroid would be fine too. The smaller a toroid is, the cheaper the cost. #6 material is a good choice for many HF applications- So is #43 or #31
However, # of turns and optimal material will vary a great deal depending on the impedance transformation desired and frequency.