RF-Amp

RF Amplifier

From Charlie Morris' (ZL2CTM) Go QRP Portable SSB Rig
- Solid State Design for the Radio Amateur?
+22 dB gain
FT37-43 toroids
- Wideband Transformers 5 - 400 MHz
- Power Transformers 0.5 - 30 MHz
- Input Transformer (T1 on Charlie's - T2 on this board)
  - 50:75.8 Ohms = 1 : 1.23 turns ratio
    - 9 turns primary, 11 turns on secondary
- Output transformer (T2 on Charlie's - T1 on this board)
  - 200:50 Ohms = 2:1 turns ratio
  - 10 turns primary (on transistor collector), 5 turns secondary (towards output)
DC operating point
- Ice = 10 mA
- Ve = 0.1 * Vcc = 1.2V
Input connectors: SMA or BNC