Elecraft a publié un document permettant de répondre aux questions fréquentes au sujet du KX2 mais également de le comparer avec le KX3.http://www.elecraft.com/manual/KX2%20FAQ%20v-1-2.pdf
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(...)Q: How does the KX2 differ from the KX3?
A: The KX2 has many of the same features as the KX3, but it’s about half the size and weight, making it ideal for ultra-light portable and “stealth” operation. It covers all HF bands (80-10m), with SSB, CW, and data modes, with up to 10 W output from its internal Li-ion battery. Controls are lower in profile. There’s a single tilt-foot in the rear, making a 3-point mountfor rugged terrain. The built-in mic and quick-disconnect trailing ground wire are ideal for hand-held operation.
The KX3 has additional features that make it the choice of many operators as a home, travel, and DXpedition station. These include 160-6 meter coverage, a 2 or 4-meter VHF option, full 15 watt output on most bands, ultra low-noise synthesizer, larger complement of controls, weighted VFO A tuning knob, and matching high-performance panadapter (PX3).
Both rigs work seamlessly with the KXPA100 amplifier. They also share the MH3 microphone, KXPD2/KXPD3 keyer paddles, and other accessories.Q: It the KX2 a good choice for SOTA (summits on the air) operation?
A: Yes. We designed the KX2 specifically with SOTA operators in mind. At just 13 ounces (less options), the KX2 should fit into the weight budget for nearly any field excursion. Yet it provides more features, better ergonomics, and higher power output than minimalist radios. For weak-signal receive, there’s DSP-based APF (audio peaking filter), noise blanking, and noise reduction. The speaker has plenty of volume to overcome wind noise. In transmit mode, you’ll have 3 programmable message buffers for both CW and data, and a 2-memory digital voice recorder for SSB.
The KX2 is also ideal for use in difficult operating conditions. While standing, it can be held like an HT, with the built-in mic and keyer paddle just where you need them. In a pinch, you can make plenty of QSOs using a telescoping whip. If you’re sitting on the ground or on a rock, you’ll find the KX2 works very well in TFR (trail-friendly-radio) mode, with its folding tilt-foot deployed.
For logging, you may want make use of the KX2’s two utility mounting points (4-40 PEM nuts) on the bottom cover. You can even use these to attach the KX2 directly to a clipboard.Q: Does the KX3 stay in the product lineup now that the KX2 is shipping?
A: Yes, it does. The KX2 and the KX3 are different products to serve different purposes. The KX2’s size and weight make it perfect for SOTA and field ops. It fits in your pocket or carrying pouch. The KX3 has more bands, more modes, Q: Now that there’s the KX2, will there be continued enhancements for the KX3?
A: Yes. Elecraft will continue to produce, support, and enhance the KX3—the other transceiverin our KX Line. The KX3 has features not present in the KX2, including support for our full-color panadapter (PX3), coverage of all bands (160-6 m), all modes (adds AM and FM),
higher power (15 W), a 2 or 4-m option, and more controls (including weighted VFO knob).