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General| Power Supply | 13.8 VDC |
|---|---|
| Type | Transceiver |
| Frequency Range | 3.5-29.7 MHz |
| Mode | SSB, CW |
| RF Output Power | 5W |
Specifies the required 12V DC power source, polarity, fuse, and voltage limits for the QRP PLUS transceiver.
Details the 3.5mm phone jack for key connection, voltage, current, and full break-in CW operation.
Explains the 3.5mm stereo jack for keyer paddle, including tip/sleeve connections for dot/dash.
Describes compatibility with electret microphones and the need for potential rewiring for other types.
Controls power and loudness of received signals, displays serial number on startup.
Sets operating frequency, steps through memories, adjusts bandwidth, and keyer speed.
Shows frequency, bandwidth, and keyer speed in words per minute on the LCD.
A -20dB position to handle strong signals or high band noise, usually left in NORM.
Increases tuning rate to approximately 100KHZ per revolution for rapid frequency changes.
Manages 20 memories, allowing storage and recall of frequencies, retaining data with a lithium battery.
Displays signal strength in receive mode and relative output power in transmit mode.
Allows tuning to any frequency between 1.8MHZ-29.7MHZ; transmitter operates only within amateur bands.
Adjusts the loudness of the CW sidetone relative to received signals.
Controls transmitter output power in SSB and CW modes, from milliwatts to over five watts.
Instructions for replacing the 2016 coin cell battery that retains memory data.
Procedure to adjust the transmitter bias pot (R18) for proper output stage operation and current draw.
Procedure to adjust R31 on the AF PCB to set the S meter to zero when no antenna is connected.
Instructions for calibrating the synthesizer reference frequency using a counter and signal generator for accuracy.
Details the signal path from microphone amplification to balanced modulator for SSB transmission.
Explains the CW transmission process, including keying, BFO shift, and power control.
