Features:

1. Wide Frequency Coverage: The G90 covers HF amateur bands from 1.8 to 30 MHz, providing access to a broad range of frequencies for worldwide communication. It supports single-sideband (SSB), CW (Morse code), AM, and digital modes like FT8 and PSK31.

2. 20W Output Power: Despite its compact size, the G90 delivers up to 20 watts of RF output power, allowing for reliable communication over moderate to long distances. This power output is adjustable, allowing users to conserve battery power when operating at lower power levels.

3. Built-in Automatic Antenna Tuner (ATU): The G90 features a built-in automatic antenna tuner, enabling users to quickly and easily match the impedance of their antenna system to the transceiver, ensuring maximum power transfer and optimal antenna performance.

4. Detachable Display Unit: One unique feature of the G90 is its detachable display unit. The main unit can be mounted out of the way, while the detachable display can be positioned for optimal viewing and operation. This design allows for greater flexibility in installation and operation, especially in portable or mobile setups.

5. Large Color Display: The G90 features a large color TFT display with intuitive menus and adjustable brightness, providing clear visibility of essential operating parameters, spectrum scope, and menu options.

6. USB Connectivity: The transceiver includes a USB port for connecting to a computer for rig control, firmware updates, and digital mode operation. This allows users to interface the G90 with popular software programs for logging, digital modes, and remote control.

7. Built-in Sound Card: The G90 features a built-in sound card for digital mode operation, eliminating the need for an external sound card or interface. This simplifies setup and operation for digital mode enthusiasts.

Pros:

1. Portability: The compact size and lightweight design of the G90 make it ideal for portable operations, field days, and outdoor activities.

2. Affordability: The G90 offers a compelling combination of performance and features at an affordable price point, making it accessible to a wide range of amateur radio enthusiasts.

3. Versatility: With its wide frequency coverage, multiple operating modes, and built-in features like the automatic antenna tuner and sound card, the G90 is suitable for a variety of amateur radio activities, including DXing, contesting, and emergency communication.

Cons:

1. Limited Output Power: While 20 watts of output power is sufficient for most communication needs, some operators may prefer a transceiver with higher power output for long-distance communication or challenging operating conditions.

2. Limited Memory Channels: The G90 has a limited number of memory channels compared to some other transceivers in its class, which may be a consideration for operators who require extensive channel memory for repeater or satellite operation.