Venus SW-3B User Manual

SW-3B
3 band CW QRP transceiver
SW-3B is an ultra-small, ultra-lightweight three-band CW QRPtransceiver that consumes less than 40mA when
receiving.It is ideal for portable use,field day and SOTA.
Specifications:
Dimensions: 104*71*25mm (excluding the protruding part such as knob)
Weight: 180g.
Operating voltage: 8-15VDC.
Operating current:
receiving: about 45mA(backlight on), and less than 40mA(backlight off).
transmitting: about 0.8A (at 12V voltage).
Frequency range: 5-8MHz, 8-11MHz, 11-16MHz (the receiving sensitivity peak is only 40m, 30m, 20m amateur band).
Transmitting: 7.0-7.2MHz, 10.1-10.15MHz, 14.0 -14.35MHz.
Two filters: CW and SSB are automatically switched according to the operating mode.
The CW filter has a bandwidth of about 400 Hz and the SSB is about 2 kHz.
The adjustment range of RIT/XIT
RIT: -9KHz to +9KHz, XIT adjustment range: -30KHz to +30KHz. Output power Approx. 5W (power supply voltage is 12V)
Side tone: 600Hz
Auto keyer: The built-in auto keyer speed is adjustable.
Storage: Each band has 8 storage frequency channel, and the frequency and operating mode can be stored by the user arbitrarily.
Receiving mode: CW, CWR, USB, LSB. It can also be transmitted in the SSB mode of receiving, enabling cross-linking of CW/SSB.
AGC: Simple Audio AGC, S meter shows the relative strength of the signal and is for reference only.

Venus SW-3B Specifications

General

Type	Handheld Transceiver
Frequency range	400-470MHz
Mode	FM
RF Power output	5W
Output Power	5W
Voltage	7.4V

Summary

Specifications

Connections

External power supply

Connects 8-15V DC or battery, with polarity protection circuit to prevent damage.

Headphones

Connect a stereo headset with 8-32 ohm impedance to the PHONE jack.

Antenna

Connect a resonant antenna to the ANT interface (BNC); use a tuner for non-resonant antennas.

Key/Paddle

Automatically recognizes straight or electronic keys; connect to mono or stereo plug.

Operating

Power Switch and Gain Control

Power switch location; RF/AF gain knobs control front-end and audio gain clockwise.

Band Selection

Two switches select bands (40m, 30m, 20m); each band has 8 storage frequency points.

M/V/SAV button Function

RT/MOD Button Function

Frequency Step Change

Backlight Mode Selection

Transmitting

Electronics Keyer

Automatic Calling

Short press CQ button for auto CQ; press 1 sec to cancel.

Speed Adjustment

Hold CQ button to adjust auto keyer speed; exits automatically after 8 seconds.

Call Sign Input

Hold CQ button to input call sign for auto keyer; display shows TX.

Adjustments and Calibration