1. Overview
The Superstar 3900 OLED is a standard Superstar 3900 with a microprocessor controlled
modification board and replacement OLED display fitted. The original channel selector is
replaced with an encoder providing a number of benefits:
• OLED display which displays a 6 digit frequency readout, channel and band display
• Different operating modes: VFO and channel
• Operation from 25.615 MHz to 28.065 MHz in VFO mode
• Operation from 26.065 MHz to 28.065 MHz in channel mode
• UK 27/81 channels 27.60125 to 27.99125 with correct readout in channel mode
• TXCO giving improved SSB frequency stability, typically better than 5PPM drift
• Selectable 100Hz / 1kHz / 5kHz / 10 kHz / 100 kHz steps in VFO mode
• Precise coarse control allowing -5kHz / 0 / +5kHz to be set easily in channel mode
• Three roger bleeps can be sequenced with a choice of 10 tones
• Band and full frequency range scanning function
1.1 Front panel layout
This radio has a custom Superstar 3900 inlay fitted as below:
1.1.1 Switch mapping
S-RF / SWR / CAL – As normal
SCAN / OFF – Switches the scan on / off
RB / OFF – Roger bleep on / off
VFO / CHANNEL – Selects VFO (frequency) mode or Channel mode
1.1.2 Band selector
The band selector is used in channel mode only and provides 6 bands of 40 channels.
1.1.3 Mode selector
FM / AM / USB / LSB operates as normal
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