How to use the Balun?!

[Lord of nothing]

Hi
How to use this: https://www.ebay.de/itm/NooElec-Balun-One-Nine-Tiny-Low-Cost-9-1-Balun-Long-Wire-HF-Antenna-RTL-SDR/151514474355?hash=item2346f76773:g:bI4AAOSwiCRUjbOO
?! 
Nobody could give me an answer who was understandable. 
Thanks

[madires]

I'm not sure, but a ratio of 9:1 and the long wire antenna would indicate a unun which is used for impedance matching a random long wire to a 50 Ohms antenna input. One of the wire terminals is for the long wire and the other one is ground (same as the SMA's ground, the antenna's ground isn't used usually). For a dipole you would need a 4:1 balun.

[chris_leyson]

Looks like a Mini Circuits TC9-1 transformer, or similar. https://ww2.minicircuits.com/pdfs/TC9-1.pdf

[Damianos]

http://www.nooelec.com/store/downloads/dl/file/id/40/product/192/balun_one_nine_schematic.jpg
... so, it depends on what you have to connect on it. As it is shown, it is configured for a symmetrical high impedance antenna (dipole). If you have to connect a monopole (like a random wire) a modification is needed: open the jumper R1 and connect the ground to one of the input terminals.

[Lord of nothing]

Its just inside the box who got shipped with because I never get run it. 
Now I want play around with <30mhz Stuff. I have just that thing with an Upconverter (who work with my CB Antena) and an LNA.

[Lord of nothing]

now the weather get better and i could put and sdr temporary outside the house. 
For what are the 2 Clamp things are there and what should i put into them?! 

[medical-nerd]

Hiya

A review: http://www.radioforeveryone.com/p/review-balun-one-nine.html

From this you can put a long wire into one of the clamps - or use 2 long wires .

Cheers