Tecsun R-9710 AM/FM/SW radio receiver outdoor test.

Tecsun R-9710 is a rare dual conversion (two-stage intermediate frequency) superheterodyne radio receiver. Other than the benefit of superhet, 8 dedicated crystal filters for each shortwave band is really worth it. Usually, only some high-end radio receiver using crystal as a bandpass filter. With such a design, this receiver performance is much better than other brands in its class.

FM stereo spatial sound separation is great, especially when using with the original Tecsun headphones. So many radios at this price range wouldn't give you a good high-fidelity sound quality. Both Medium Wave and Shortwave sensitivity and selectivity are superb. The ability to reject unwanted adjacent signal working as intended. Shortwave reception improves a lot when attached to the Tecsun clip-on long wire attached.

The plastic housing quality is good including the brushed aluminium tuning scale. It does come with a carrying pouch, AD/DC power adapter, battery charger, clip-on long wire antenna and stereo headphones. The housing is pink but I think it is awesome too since most of my shortwave receivers are black or grey.

The tuning scale printed in Chinese mixed with English. This batch could be initially for China market only due to MOU with Grundig, Germany. Thus, the tuning scale direction is going the opposite direction however, it is not an issue to me.

Quick notes:
IC 1: Toshiba - TA2111F AM/FM 1 chip tuner ICs, which are designed for portable radios and 3V headphone radios (this is not a DSP chip).
IC 2: Sony - CXA1622MC Stereo Power Amplifier/Monaural BTL Power Amplifier
RF Preamp: Sanyo - 2SK544
A schematic diagram is available from http://www.fmdiy.com/uploadfile/jpg/2...