Made a 50 Ohm coax driver card (DRIVE50).

• "TTL" Level Line driver
• 50 or 75 Ohm output impedance
• BNC or SMA output connector
• 10K pull-up on input
• Card is non-inverting
• 1.5V-5.5V power
  • Typically 3.3V or 5V
• 3-pin right angle 0.1" pitch input connector
• (4) 4-40 mounting holes

Installed in Box

Card works well.