Talk about the initial experience of Kchibo D39L ,Radio Reviews


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Feel more beautiful than the picture at first glance, do not open the package diagram on the next chart made up the PK. D91L D39L battery and the discovery of the same, so he gave ready to put on a good battery to start the preliminary PK

Listen first two strong local FM station, 94.2 101.4 noise and strong field at this time were 18:48 18:49 ratio, the sensitivity is good, but found that when the radio will sound when the audio is too large there will break the sound, but DSP machine is not just feeling overloaded and did not break the sound, D91L case this clock will appear, but CR220DSP break the sound is not large, this should be the quality of the radio broadcast

103.9 107.5 to better sound quality not the situation completely, it seems that the radio emission and the reception quality of the relationship is very important (103.9 CNR1 signal to noise ratio of 9:39 and the strong field 107.5 news the city noise ratio and strong field 18:45), 93.5 units receiving a weak economy sound (signal to noise ratio and strong field 3:16) the sound is too small, 102.8 Chongqing News (signal to noise ratio 0:12 and the strong field) is a difficult level, it appears that weak units The receiver is still quite lacking. Adjacent sets of 103.9 and 104.1 are well separated.
Continue into the medium wave initial test, the receiver sets the local 612,747 strong when better results than D91L, (signal to noise ratio and strong field 612 13:39 747 14:38), the medium-wave transmitter from a certain distance from my signal urban centers is not as strong and there is no receiver overload and mirror, and this also provides a good short-wave test tone pieces. Remains to be tested
Shortwave on: 15480 CNR1 15500 CNR2 can be a good reception, good results (signal to noise ratio and strong field CNR1 25:51 CNR2 20:35), but with the ear feel their voices are muffled, some of the same frequency of the radio receiver will be the background roar too loud, the sound is relatively large ups and downs, but when the party with the radio frequency signal enhancement will be reduced when the roar

Background roar with DE1102 test much smaller than the D39L, although this is a feature of the same radio frequency, reducing the background roar better. Receiving weak units, such as subnet 60,559,595 NHK lack of signal gain, fluctuating greatly, to listen to the suffer-level fluctuations between levels is the need to improve the place. Adjacent channel interference in Taiwan, such as 15380 and 15385, selectivity is good, but the background did not 1105,1102 clean. Since my field is not strong medium-wave station, so there is no short-wave interference.
The comparison of the machine can control the background noise, and D91L compared to the small lot. However, the automatic selection sets a serious decline faster than D91L, hoping to improve, while in the background will appear automatically search a small “take the ride sound,” If sensors with intelligent backlight panel parallel to the better.

The preliminary tests are body rod antenna, indoor window part of the receiver.

Preliminary summary, the need to improve areas:

1, the need to improve short-wave automatic gain
2 sets of background selection, “take the ride sound” hope to continue to improve background noise
3 FM receiver with audio overload break the sound needs to be improved
4 units need to improve FM reception is weak
5 speed automatic storage units need to improve (not D91L CR220DSP fast)
6 shortwave listening with some nausea ear
Where good performance

1 FM stereo separation good
2 Intelligent backlight performed well
3 shows strong field noise and more accurate
4 FM selectivity is very good

Kchibo D39L

Kchibo DSP D39L-2

kchibo D39L 2  kchibo D39L

kchibo D39L 3


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