Function:

Convert pre-filtered RF to IF (or to audio if direct-conversion receiver)

Input/Output:

• POWER: 9-15 VDC, 5.5 x 2.5mm power jack
• RF IN: 50 ohms, RCA Jack
• VFO IN: 200 ohms, RCA Jack
• IF OUT: 200 ohms, RCA Jack

Operator Controls:

• No operator controls anticipated

Key Specs or Limitations:

• Frequencies In/Out: To be determined
• Gain: 10-15 dB (fixed, RF to IF Voltage Gain)
• Noise Figure: < 6 db
• Tank Circuits: min 1 tank circuit in output stage (or LPF in D-C rcvr)
• VFO Input: expect 0.25V pk-pk

Misc Notes:

If an active mixer is used (like the NE602/SE612), an output amplifier will probably not be required; if a passive (diode ring) mixer is used, a VFO input amplifier and an IF/AF output amplifier will be required. Amplifiers, if used, should have tank circuits to minimize unwanted responses