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Frequency counter
Direct conversion
receiver
Components
80m_40m transceiver

SSB_CW Audio Filter

4 channels VFO

2W- FM transmitter

Mixer

​40m_20m transceiver

​4 channels BPF

S-meter
1 channels VFO

2 channels VFO

​1 channels BPF

​2 channels BPF

LPF
chassis
IRT
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JJJelectronics- SSB/CW audio filter/amplifier

  

*Improve selectivity for speech mode (SSB, AM) and CW mode
* Output power: 1.0w AF.
* Pre-amplifier stage
* CW center frequency is about 850Hz, Band width about 300Hz
*SSB roll off about -50dB at 3.4KHz
*4 way switch for on/off, CW mode, SSB mode and AM mode (no filter)
* Voltage 11v-13.5v
* LED power indicator
* LM380 (1w) audio power amplifier
*sound level control (volume)
  
Circuit diagram
Silk screen
Build instruction
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Price is £13.99 with free delivery to UK





Price is £15.70 with free delivery to Europe
Buy Now