The ARINST USDX+ Plus is an ultra-small QRP transceiver suitable for outdoor use, with a built-in speaker and 1602N LCD display screen.
It has 8 bands and is compatible with digital mode software controls. The transceiver has high-frequency circuit design principles and can reach 3-5W power in all bands. Despite some potential shortcomings, such as the battery issue and receiver audio problem, this transceiver's excellent performance makes it a versatile and reliable option for amateur radio enthusiasts.
Let's explore the ARINST USDX+ Plus an 8-band SDR all mode QRP transceiver that is designed to be ultra-small, making it easy to carry for outdoor use.
This transceiver has built-in speakers and a 1602N LCD display screen. It is compatible with FT8, JS8, FT4 and other digital mode software controls, making it a versatile option for amateur radio enthusiasts.
In terms of performance the ARINST USDX+ Plus is engineered with an emphasis on high-frequency circuit design principles, ensuring excellent performance. With 8 bands covering 80m/60m/40m/30m/20m/17m/15m/10m, this transceiver can reach 3-5W power in all bands, and reserve SOT-223 and TO-220 package pads for upgrades. The high emission efficiency is noteworthy with 80m/60m/40m/30m/20m efficiency being higher than 80%, 17m efficiency higher than 70%, and 15m/10m efficiency higher than 60%. Moreover, the ARINST USDX+ Plus features a high-precision KDS brand TCXO with frequency accuracy better than 1PPM and frequency stability better than 0.5PPM.
On the positive side the ARINST USDX+ Plus is an ultra-small transceiver with high-frequency circuit design principles and excellent performance. It supports digital mode software controls and can reach 3-5W power in all bands, making it a versatile option for outdoor use. However, the product information does not indicate whether the battery is included or not, which may lead to confusion for customers who expect it to come with a battery. Also some customers have reported issues with the receiver audio, including loud digital noise at lower volume and distortion at higher volume, making the majority of the volume range useless. Additionally, some customers have experienced intermittent problems with the E button (rotary controller press in) making controls relying on this button challenging to use.
In the end the ARINST USDX+ Plus is a versatile and reliable option for amateur radio enthusiasts looking for an ultra-small QRP SSB/CW transceiver. Despite some potential shortcoming, such as the battery issue and receiver audio problem, this transceiver's high-frequency circuit design principles and excellent performance should unquestionably be taken into account. Therefore, we recommend the ARINST USDX+ Plus for outdoor use and amateur radio activities.
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