My reply to me1900

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P-40 Warhawk
Posts: 84
Joined: Thu Jun 26, 2014 11:55 pm

My reply to me1900

Post by P-40 Warhawk » Fri Jul 25, 2014 9:46 pm

I don't understand why you would try to hookup a balanced transmission line like 450 ohms to a unbalanced 50 ohm input . You would have to make a matching transformer that would take the 450 ohm balanced transmission line and make it to 50 ohms unbalanced input for the primary winding to the T37-43 toroid . What I am saying is that you need to make the secondary of the T37-43 toroid that goes to the RTL 2832 chip inputs more than 200 ohms .
At 500 ohms Independence going into the RTL 2832 chip inputs I get about 3 " S " unites higher signal than 200 ohms input to the RTL 2832 chip .

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