Pocket Radio DSP chip installed Kchibo D91L initial feeling,Radio Reviews


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Kchibo DSP D91L

Received pocket radio D91L a few days, the overall impression is compact, coordination, beautiful, easy to use. Use performance and good selectivity, FM sensitivity enough (feeling demodulation threshold), good selectivity not found in the FM segment mirror.Considered over and over again, although the volume and weight than a single grade, but still use the DE1103, Degen as a reference machine for comparison.

DSP D91L

Test methods: the speaker to listen to every radio in the range of 2 square meters upwards to the best results.
FM feel Kchibo D91L, sensitivity slightly lower than the Degen the DE1103, seems Kchibo D91L demodulation threshold, the signal is weak, difficult, higher than a certain strength after demodulation success is very good. Short Kchibo D91L antenna, PK is not fair, but the results, if Kchibo D91L as a high-performance large-volume design, overall performance potential than Degen the DE1103.

During the day to listen to medium wave only 738KHZ, the two planes feel the sense of hearing has 4 good night multiprocessor, from 21:45 pm to begin testing. Feel Kchibo D91L sensitivity was significantly lower than the Degen the DE1103, it is very normal bar magnet length there. Since the signal is weak, noisy, and Degen the DE1103 1KHZ step and narrow bandwidth of a great help, you can use partial transfer method to suppress interference. Feel The DSP chip also seems to not voice upgrade, and eliminate noise do go.
Other machine ratings signal to noise ratio is not correct, the noise floor, the small volume distortion, key anti-jamming, easy to misuse, are the chief architect and DSP chip running and electromagnetic compatibility is not enough. In fact, this problem can be avoided completely. The volume control should be placed on the DSP DAC front, should give the output of the DSP to the best SNR, and then in other places to adjust the volume.
Do not look in the DE1103 Degen PK, Kchibo D91L fall under the wind, but did not affect the DSP chip will occupy an important position in the high-performance radio Kchibo D91L as Kchibo, DSP technology used in radio guinea pigs should be considered very successful, and regret the DSP used in radio should not be considered as the purpose of reducing the total cost, but should fully tap the potential of the DSP chip, if will do better on the high-frequency machine. feel the amazing performance of DSP chips in the FM, to do the pocket-sized machine is a waste of.

I once said: indicators improved for most consumers is difficult to clearly feel that (as long as a pointing, no one can feel the obvious), the price increase that is very vital, but the adoption of new technologies to attract consumers those who desire to buy in the launch of a new technology product, must be unconditionally thoroughly defeated in the same price (or lower than the selling price) of the same type using the traditional technology radio. Actually spend a lot of manpower and resources hard to engage DSP radio right Kchibo, may be misinterpreted as a marketing strategy (speculation DSP “concept”) and reminder. From the PK data, the DSP radio performance is fairly good.

When the number of tune radio was introduced, the number of tune radio reception significantly lower than the analog tuning radio for the same price, but the number of tune radio with analog tuning radio can not be done fast input frequency tuning and memory tuning, so there is a market. Basic functions, the DSP radio can not be the number of tune radio to distance, can only be considered in performance and product pricing.

In addition, Kchibo D91L with field strength, medium wave and FM both display resolution 1dBμ, very easy to use. But be aware that this is only a relative value is impossible to achieve the level of the instrument level. Its full frequency range of measurement error will certainly be more than 10dBμ.


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pcs sample
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