DRAKE
1- R. L. DRAKE company's TR-4, TR-4C, TR-4CW, and TR-6 radios to PC Sound Card configured for PSK31 and other digital modes. Please note; SwitchCraft 230 (Collins) type 3-circuit MIC plug is NOT supplied with the ISO-kit. ONLY the 1/4 inch Stereo plug is supplied! The PTT circuit shown in this diagram enables software calls to RTS signal of an unused serial comport.
2- The DRAKE TR7 . The TR-7 or TR-7/A, uses the standard 4 pin screw on female mic connector. The PTT circuit shown in this diagram enables software calls to RTS signal of an unused serial comport.
3- The DRAKE TWINS (R-4B and T4XB) by R. L. DRAKE company, radio to PC Sound Card configured for PSK31 and other digital modes. Please note; SwitchCraft 230 (Collins) type 3-circuit MIC plug is NOT supplied with the ISO-kit. ONLY the 1/4 inch Stereo plug is supplied! . The PTT circuit shown in this diagram enables software calls to RTS signal of an unused serial comport.
