One easy thing you can do to test your transformer is to put a 75 ohm resistor on the proper side - and then use an SWR meter to measure the impedance on the 50 ohm side. I like to also see how high in frequency I can go before the SWR starts to rise. Most of the transformers I wind typically work pretty well up to 7 or 10 MHz.
If you don't have an SWR meter - you can use your transmitter set for a power level that won't burn up your resistor. Tree N6TR On Wed, Sep 28, 2016 at 10:58 AM, Ed Stallman <ed.n...@gmail.com> wrote: > Thanks all for your wisdom . Some say not needed and some say to use the > 75 / 50 transformer . I figure it's easy enuf to do . So now I'll try it > and see for my self . > > Thanks again, Ed N5DG > > > On 9/27/2016 10:35 PM, Ed Stallman wrote: > >> My receive antenna is 75 Ohm RG6 connected to my radio and I want to wind >> a 2873000202 binocular core to step 75 to 50 Ohm's . I seen this info on >> W8JI web page but can't seem to find it again. >> >> I do remember it's 4 turns 50 Ohm and 5 turns 75 Ohm and all wires come >> out the same side of the core . Am I correct so far? >> >> Does it make a difference which winding I wind first ? >> >> Thanks in advance , Ed N5DG >> >> >> >> --- >> This email has been checked for viruses by Avast antivirus software. >> https://www.avast.com/antivirus >> _________________ >> Topband Reflector Archives - http://www.contesting.com/_topband >> > > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > _________________ > Topband Reflector Archives - http://www.contesting.com/_topband > _________________ Topband Reflector Archives - http://www.contesting.com/_topband