Redsun RD1220 full-band digital radio to listen to the feelings ,Radio Reviews


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Redsun RD1220 3

Have just received a shipment sent to the RD1220, open the wooden box packaging, very excited, a large LCD display Redsun radios in front of the work of the RD1220 first class, very beautiful, very generous. The date of manufacture on the certificate as follows: September 26, 2006, serial number: 20220061000001.

View all supplied items, in addition to the instructions indicated on the supplied goods, more than the headphones a four 1200mAh Ni-MH rechargeable batteries, a machine holster;
Immediately install the batteries to listen to 102.4 MHz, Hebei music broadcasting. Beautiful sound, a loud noise. Machine volume control knob and short-wave gain resistance adjustment knob, and feel awesome. Tuning knob in the slack just tuning; very easy tuning.

I think in the post on 2006-10-5 (Redsun RD1220 (short wave dual conversion) radio has been on sale, grateful to friends and RD1220 radio (short wave dual conversion) corresponds to the radio is a what? Look redsun RD1220 (short wave dual conversion) radio Description: high performance, high-quality sound, radio, digital display radio digital radio, I virtuous born digital display to full-band clock radio DR920, serial number: 2732005100135. did not feel in the use of high-performance, high-quality sound. Desheng BCL3000, my BCL3000 serial number: 1682005000893. it can be called: high performance, high-quality sound, radio, digital display on the radio.) The following is the RD1220 and BCL3000 comparison. Be tested, and RP2100, the DE1103

FM aspects; sensitivity; the main target of 105.9 MHz, ningjin Radio. (Fairview broadcast the station call sign), the Ningjin Radio is in a steady radio station received from Shijiazhuang farthest RP2100, the DE1103 receiver, antenna upright can; BCL3000 need the antenna to find the direction, and the radio signal strength one or two grid RD1220 performance very good, upright antenna, the intensity of the full grid. Visible sensitivity is a strong, selectivity, mainly to 92.8 MHz, 92.8MHz broadcast the Hebei news channel programs, about the power 93.0 MHz the Jinju broadcast radio (health FM). And 92.4 MHz the charm FM, and broadcast on 92.4 MHz the charm FM’s signal, to listen better (as if more powerful) 92.6MHz in Shijiazhuang City, the following look at the performance of the four machines. 1, BCL3000 92.8MHz on the reception quality, although there are other frequencies of sound fleeing, but does not affect listen. 2, the DE1103 is in a 92.72 on a good listen to the same effect and BCL3000. 3 RP2100 and DE1103 is a 92.72MHz signal, the other units of the signal is very strong very confusing. Poor performance. Really unexpected. Even more surprising is the best performance turned out to be RD1220 other units fleeing minimal signal reception even better BCL3000, this number is 20,220,061,000,001 of the machine is indeed One machine proud.

The point other things, receive RD1220 that day, I get the radio to go to work secretly to listen to a few minutes in a very complex receiving environment, good to listen to 103.1MHz Baoding radio programs, a few minutes not explain what the issue, the point is: an Shijiazhuang City, the friends said: can receive in Beierhuan, Shijiazhuang to Baoding, People’s Broadcasting Station frequency is true.

Second, medium, time is too short, plus I live in Silesia, electromagnetic interference is too severe to continue after the Polish comparison. In a very short time after listening to about 918kHz, Shandong People’s Radio show, a few machines are basically the same.

Third, the sound quality, a minimum volume using ear plugs to listen, my BCL3000 serial number: 1682005000893 radio effect best, almost can not hear the background noise. Redsun RD1220 in the same circumstances, noise or large a number. 2, three-dimensional separation degree, Oh, there is a ratio of the BCL3000 and RD1220 is the same, the difference that one use headphones to listen to music effect loyal to the original music, this but benevolent see benevolence, the wise see about intellectual , 3, on the radio in http://www.redsunelect.com/bbs/dispbbs.asp?boardID=25&ID=2367&page=4 post, RP2100 BCL3000 good to receive radio signals, the RD1220 performance. The frequency display is accurate. The RD1220’s headphone plug is mono, stereo switch design is very characteristic of the FM-Stereo, and displayed on the LCD screen. Audio switch the music sound good effect, machine broadcast voices sound beautiful, loud and clear voice.

Four, comes with battery, battery quality is good to get the radio installed on random Ni-MH battery to listen to, used as early as 21, and then Germany first, Shenzhen Electronics Co., Ltd. products Valvoline quick and easy enrich my knowledge, 12 fashion on RP2100, a small volume work by 1:00, though it is 1200mAh, 13 hours of work is very good, and reiterate here my personal opinion, I do not like to use the radio to charge that the best charger to charge the battery.

, AM (MW / SW) band IF bandwidth option; I said before, I live Shijiazhuang, Xili, the electromagnetic interference is very serious, especially at night, the charger interference in radio, barking (electric bike charger charge), RP2100 and BCL3000 have the option of AM narrowband, broadband, select the AM (MW / SW) band of the IF bandwidth, you can get a better selectivity, lower noise. Indeed the case in actual use. Redsun RD1220 is the lack of this feature, receiving contrast, especially in the short-wave receiver, it is a disadvantage.

6, medium; the evening of 22; This Sunday, the work earlier than usual twelve hours, just to test, 23:30, open a few radio listening to medium wave, find a sound drift, very weak signal; 1332kHz. RP2100 and BCL3000 the AM narrowband RD1220, and DE1103 normal reception, listen to the RD1220 and DE1103 even better in the RP2100 and BCL3000 surprised! Interference sound like a previous post said, Redsun radio interference sound playback low tone, high tone BCL3000 and DE1103 interference sound playback on the AM Naiting Redsun radio a little bit better. RD1220 so in the medium wave equals the DE1103 better RP2100 and BCL3000.

7, shortwave; when you see the RD1220 instructions, see the short-wave band frequency range, somewhat disappointed. ; SW4; 7100-7300kHz, could not help think of my Desheng 747, 757 radio, 747 in 6200-7100 for the blank, in 6300-6400 among a lot of radio stations, 757 in 7300-9500 blank, while the also a lot of radio stations between 7300-7550 and 9280-9500, is 757 later the reasons for the 757A, when to get the Redsun RD1220 disappointment is superfluous, and the following is the actual frequency range, SW1 :3570-4 285. SW2 :4506-5309. SW3 :5715-6435. SW4 :6800-7604. SW5.9300-10 104. SW6 :11414-12136. SW7 :13300-14104. SW8 :14928-15729. SW9 :17449-18160. SW10: 21264-21985. This frequency range is basically includes all radio frequency. This is also the users are most concerned about the reception of shortwave reception, a little short-wave signal strength of the radio, the radio can be a good receiver, so I find the two Ge signal to illustrate the problem,

1, 6010kHz before midnight seems to be the signal of a channel of CCTV, the female announcer’s voice, 6015kHz on the broadcast signal of the Japanese. Much stronger signal 6015kHz 6010kHz signal, listen to RP2100 and BCL3000 using the amplitude modulation of narrowband receiver significantly RD1220 narrow band receiver can be detected in the 6010kHz signals in broadband 6015kHz signal coverage, the RD1220 is a disadvantage;

2,9455 kHz frequency to listen to well-known 9455kHz is a little strong signal in the sound of folk music, broadcast voice floated, RP2100, BCL3000, listen to than the RD1220 the voice of the DE1103’s received floated earlier a little bit, drift to the voice of a little later point. The RD1220 again backward.

This is also when I listen to shortwave, RP2100 and BCL3000 narrowband, broadband option has been in a narrow band of reasons.
Special note: listening to the radio, I am afraid no one to listen to difficult to listen to a good program, which is a tough spot on the radio fills. Not explain the problem in actual use.

, Power aspects; 1, replace the battery, battery replaced four times in my RD1220 to quickly change the battery, the time information is lost, very disappointed, back to the battery plug in an external power supply. 2, power adapter, it is undeniable in the power adapter on the Redsun is the next work. RP2100, AC listen to and use of the battery there is no difference. Great.

9, the overall impression

1 the Redsun company is a responsible corporate delivery of the shipment sent to the wooden box, all the exciting shows the Redsun the work style is simply agile,
RD1220 Radio from design to the workmanship is remarkable, large LCD display ingenuity unique, large print, facilitate their selection of the headphone plug is mono, stereo switch, and displayed on the LCD screen FM-the Stereo The design is very characteristic. The shortwave screen band unprecedented! AFC switch
3, is inadequate; manual design is a bit small, and RD1220 Radio unworthy. Appearance and function description page is particularly significant, hope to correct.

RD1220 radio three regrets!

RD1220 The disadvantage is:

1, change the battery, you must plug in an external power adapter, or the time information will lose interest, even if you change the battery very quickly. 2, the quality manual and RD1220 radio not deserve it. 3 AM IF wide, narrow-band option,

Redsun RD1220-band digital radio characteristics added

Redsun RD1220 comes with the headphone quality nice; Degen DE520 advanced digital voice recorder for the audio test; the Degen advanced digital recorder wife headphones sound low tone, the overall sound effect partial bored, the Redsun headset is different; high bass balanced, accurate positioning of music (mainly the positioning of the instrument.) full of bass, treble and bright. And the effect of Jiahe the CD-880 headphones to listen to, and I bought in the late eighties, early, I do not know the brand as a treasured the most excellent sound quality headphones to listen to the effect, good the Redsun headset performance.

2, DC-101 power adapter, Redsun the use effect of the external power supply is quite good, including RP2100, RF1210 of an external power supply, like one user said: (charging is not heat, electricity, impatient tone, beautiful and strong. ). The main point is to listen to shortwave great help to use an external power supply will increase the sensitivity of the shortwave sensitivity. This is the result of several tests.

Beautiful sound, Redsun RD1220-band digital radio power is moderate, beautiful sound, obvious to all users, hope RP3000 On this basis, to continue efforts to squelch and then low, there will be better results.


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One Response to Redsun RD1220 full-band digital radio to listen to the feelings ,Radio Reviews

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