Re: My SDR-4


Chris Moulding
 

Hi Martin,

The frequency range of any modified receiver would stay the same as the original spec so for your early SDR-4 it is 850 kHz to 40 MHz.

One of the modifications of the early receivers was to replace the original isolation transformer with a new one. This gave better isolation and a flatter frequency range but you lost the high impedance input.

Regards,

Chris

Join CrossCountryWireless@groups.io to automatically receive all group messages.