Note
The ICOM IC-260A is a microcomputer-controlled, all-mode transceiver designed for the 2-meter band. It is a compact and rugged unit suitable for mobile installations, DXing, local calls, and satellite work. The device features a microcomputer-based 100Hz step Digital PLL synthesizer and an advanced continuous tuning system with a no-backlash dial.
Key Features
– All-Mode Coverage: Supports FM, USB, LSB, and CW modes.
– Dual VFOs: Two separate VFOs can be used independently for simplex operations or together for any desired frequency split in duplex mode.
– Multi-Purpose Scanning:
Memory Scan: Monitors three programmable memory channels.
Program Scan: Scans between two user-programmed frequencies.
Auto-Stop: Scanning automatically stops in all modes when a signal is detected.
– Features an LED display that follows the tuning knob movement for highly accurate 100Hz readouts.
– Includes a "Quick Tuning" mode (1kHz steps) and an automatic recycling system that restarts tuning at the band edge when the limits are reached.
– Superior RF Performance: Uses MOS FETs in the RF amplifier and first mixer circuits to provide excellent cross-modulation and selectivity characteristics.
– Additional Built-in Circuits: Includes a Noise Blanker, CW Break-in, CW Monitor, and APC (Automatic Power Control).
Technical Specifications
General
– Frequency Coverage: IC-260A: 143.8000 ~ 148.1999 MHz.
– Frequency Resolution: 100Hz steps (SSB/CW); 5kHz steps (FM).
– Display: 7-digit LED (down to 100Hz readout).
Transmitter
– Output Power: High: 10W (PEP); Low: 1W (PEP).
– Modulation: Balanced modulation (SSB); Variable reactance frequency modulation (FM).
– Spurious Emission: More than 60dB below peak power.
– Microphone: 1.3k ohm dynamic with built-in preamplifier.
Receiver
– Sensitivity:
SSB/CW: Less than 0.5µV for 10dB S+N/N.
FM: Less than 0.6µV for 20dB noise quieting.
Selectivity:
SSB/CW: More than ±1.2kHz at -6dB.
FM: More than ±7.5kHz at -6dB.
– Audio Output: More than 2W into 8 ohms.
Power Requirement: 13.8V DC ±15% (Negative Ground).
Current Drain: Max 3.5A (Transmit 10W); Approx. 0.6A (Squelched Receive).
