Text: I am from Hong Kong
Time flies quickly, and it has been almost a month since the opening of "Weekly One Machine Storage". The collection of TECSUN radios, which is currently the leading radio industry in Chinese mainland, is indispensable for the collection of TECSUN radios. Tak Sen is now a leader in China's radio industry, Tak Sheng's factory is located in Dongguan City, Guangdong Province, and its products range from thousands of yuan HAM-2000 to tens of dollars of pocket radios. Taksun Radio comes with a questionnaire for each machine when it is sold, which is the company's specialty, but it is unknown whether it has done follow-up work or contacted its users after receiving the questionnaire!
It is said that Desheng is the best in the mainland radio industry, which can be seen from the imitation of the style and even model of Desheng products by other radio companies! Take the Desheng 9700 twelve-band radio introduced this week as an example, there are several machines with the same model but not Desheng brand on the market, and I have those machines, and I will use them when they are put into storage one after another.
In the past, the production areas of radios in mainland China (except Taiwan Province) were concentrated in Shanghai, Nanjing, Beijing and other places (?). But now the production of radios seems to be centered in Dongguan, Shenzhen, Zhuhai and other places in Guangdong, is this the case? Please give me advice! Have the major radio manufacturers that used to produce tubes now transformed? All I know is that Panda has switched to the production of televisions and other electronic products.
Desheng 9700 twelve-band radio is known as the 'Super Short Wave King', this machine is a new purchase, the purchase price is 160 yuan, its specifications are as follows:
尺寸： 160 x 95 x 32 mm
Weight: Approx. 300g, without battery
波段： FM: 87.0 – 108.0 MHz
TV: VHF 2 – 12 CH.
MW: 525 – 1610 KHz
SW: 4.70 – 21.85 MHz (9 bands, frequency discontinuous)
Shortwave is converted twice: 10.7 MHz for the first IF and 455 KHz for the second IF
Power supply: Three No. 5 batteries or DC 4.5V.
Merit:
1.FM can listen to stereo radio with headphones,
2. The sensitivity of the medium band is high, and I can easily receive the medium wave radio stations in Hong Kong when I use it in Guangzhou,
3. Short-wave has two frequency conversions, sensitivity and selectivity are good, I have compared it with 7600G with a rod antenna for listening one by one, 7600G can receive the radio station it can receive, its sensitivity is similar to 7600G, but the selectivity is slightly inferior to 7600G. When listening to two strong stations separated by 5MHz, they do not connect with each other, but when listening to a strong and a weak station separated by 5MHz, the signal of the weak station is slightly interfered with.
4. The tuning knob adopts a larger round melody, which is better than the plane gear knob, and the tuning feel is good.
5. The distribution in the band is wide, the station is not too crowded between stations, the tuning frequency distance is wide, there is a feeling of fading out and fading in, and it is easier to choose a radio station.
6. There is a "long-distance/local" listening selection switch, in fact, this is an antenna attenuation selection switch,
7. I don't feel that there is a drifting phenomenon,
8. Cost-effective, it is one of the best shortwave receivers that can be bought at the same price, suitable for beginners to listen to shortwave as a beginner machine.
9. Beautifully packaged, with radio case, headset and short-wave external antenna,
10. The manual is detailed, with the common sense of accepting broadcasting and the frequency table of some radio stations.
11. The speaker adopts UEC 0.5W, 25 ohm, 57mm small speaker of Ningbo Yousheng Electronics Co., Ltd., the sound is louder than the pocket machine, and the tone is moderate; Of course, if it is compared with a machine with an output power of more than 1W, it is much inferior, after all, it is a 0.5W, 57mm small speaker.
Cons/areas for improvement:
1. There is no antenna input interface, as a 'super shortwave king', the antenna interface is essential!. I think the antenna interface is a watershed for shortwave radios, and only those with antenna interfaces can be called a serious shortwave receiver. Generally speaking, the shortwave reception performance of radios without antenna interface is not very good, in fact, some multi-band radios on the market are only used as decorations to make the product look high-end, used to scare unfamiliar people or satisfy the vanity of some buyers, so as to sell at a higher price!
2.FM sensitivity is slightly worse, and the noise is slightly louder when listening with headphones,
3.FM should be equipped with a stereo/mono switch, which is believed to reduce the voice, or can be used to receive DX,
4. Due to the relationship between TV bands, FM band tuning is difficult, and the distribution of radio stations is too crowded.
5. In fact, the TV band can be canceled, I want to believe that people who like to listen to radio or short wave will not be too addicted to TV, I am one of them,
6. I change the cost of canceling the TV band to adding fine-tuning, which is also the indispensable equipment of the serious shortwave receiver,
7. When listening to short waves, when tuned to certain frequencies, there is a whistling phenomenon, which is present in all bands and is widely distributed. The booklet for the 9700 reads: 'Please note that harmonics from the internal oscillator of the unit may be received when using the 9700 to receive stations near the 5.9033, 6.2067, 12.0025, and 21.870 MHz frequency points. ’
8. The volume is slightly larger, and it can be used at home, which may be the positioning of this machine, and it is slightly too large when carried.
Performance Overall Review (up to 5 stars):****
Overall evaluation of cost performance (up to 5 stars) :*****
Excellent
excellent
Not bad
** Shorthand
* Extremely inferior
I will not hesitate to recommend the advantages of the test machine, but I will reveal their disadvantages mercilessly. However, these comments can't be used as a 'test report', just a 'test experience', these are my personal feelings, a family's words, not accurate, and please add your high opinions.
Editing + Illustration: Radio Review Translation Source: hkradioer
I would like to express my heartfelt thanks to the seniors of "I am a Hong Kong person" for their selfless sharing!