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 RTL2832U+R820T软体无线电      

SDR+DVB-T+DAB+FM  无线数字电视 DAB 无损收音 FM 最便宜的软体无线电

适合出口欧洲国家 俄罗斯联邦 等使用DVB-T的国家

Mini USB DVB-T TV Tuner Support FM & DAB MPEG-2, MPEG-4 H.264

RTL2832U & R820T Tuner, MCX Input. Low-Cost Software Defined Radio Compatible with Many SDR Software Packages

I did a little informal testing between the two sticks using SDR Sharp using the supplied whip antennas. These tests were just to take a look at the real world performance between the chipsets on some commonly used frequency range. I am sure that at some point someone will do some more accurate testing, but these real world listening tests will at least give you a rough idea of the differences between the two DVB-T sticks. Here is a synopsis of the results.

FM Broadcast Band
The E4000 seemed to be noticeably more sensitive in this area. The R820T did fairly well also, but the E4000 definitely did a better job with very weak signals. This might make the E4000 a better candidate for use with a HF converter since most of the inexpensive ones available  convert HF to the FM band on the RTL2832U sticks.

AirBand
Both sticks exhibit a lot of susceptibility to RFI in this band in my environment. Both failed to pick up a weak ASOS signal at 132.875MHz that I can usually receive on most scanners with a whip antenna. Both sticks will do much better with an external antenna and both will receive stronger nearby aircraft signals easily with the whip. Overall the two sticks were fairly close in performance with a tiny edge going to the R820T.

NOAA Weather Band
Both sticks were able to receive the local NOAA  weather broadcast at 162.400MHz with their whip antennas with no problems. Again the R820T was slightly stronger.

800 MHz Trunking
This is where the R820T really began to become noticeably more sensitive. While the E4000 could receive the same signals, the R820T signals were noticeably stronger and clearer.

1090MHz ADS-B Aircraft Navigation Signals
Here the R820T totally “wipes the floor” with the E4000. ADS-B signals were tremendously better with the R820T. This makes the R820T a much better choice to use as an inexpensive ADS-B receiver with gr-air-modes.

10 Meter Amateur Radio Band 
The E4000 cant go here, but the R820T can. Actually the R820T can do a fairly good job with signals here. However, the R820T is not going to compete with a competent HF radio. Just consider it as a “bonus”.

At the the end of the day, I would have to declare the R820T the victor in this shootout, if you are willing to give up a little performance tradeoff in the FM Broadcast band. The R820T appears to become a tad more sensitive starting around 160MHz with larger gains the higher you go. The R820T seems much better suited for monitoring higher frequency signals such as 800MHz trunking systems and most definitely ADS-B. Also you do get additional coverage from 24MHz to 30MHz.

rtl2832u和r820t调谐器，MCX输入。低成本软件的定义很多SDR软件兼容的无线电

我也使用SDR锋利的使用提供的鞭天线两杆之间的一个非正式的测试。这些测试是将一些常用的频率范围之间的芯片组的真实世界的性能一看。我相信在某一点上会有人做一些更准确的测试，但是这些现实世界的听力测试至少会给你两个DVB-T的区别一个粗略的棍子。这是一个结果的概要。

调频广播频段

该E4000似乎在这方面明显更敏感。该r820t做得相当好，但E4000的确与非常微弱的信号，一个更好的工作。这可能使E4000使用更好的候选人有一个高频变换器由于大多数可用的便宜的转换HF对rtl2832u FM带棒。

airband

两条具有很大的敏感性在我的环境在这一频段的射频干扰。既没有拿起微弱信号132.875mhz ASOS我通常在大多数鞭状天线扫描器接收。两个棍棒将与外部天线都做得更好，会收到很容易用鞭子附近飞机的强信号。两个棍棒在整体性能相当密切的与一个小的边缘去r820t。

NOAA天气波段

两支能够在没有问题，他们162.400mhz鞭天线接收当地气象广播。再r820t略强。

800兆赫集群

这就是r820t真的开始变得明显更敏感。而E4000可以获得相同的信号，信号的r820t明显更强大和更清晰的。

1090MHz本ADS-B的飞机导航信号

这里的r820t完全擦地板”与E4000。ADS-B信号与r820t非常好。这使得r820t使用作为一种廉价的ADS-B接收机GR空气模式更好的选择。

10米的业余无线电波段

该E4000不能在这里，但r820t可以。其实r820t可以与信号在这里会很好。然而，在r820t不会与主管的高频无线电竞争。只是把它作为一个“奖金”。

在一天结束的时候，我将不得不宣布r820t在枪战的胜利，如果你愿意放弃在FM广播带一点点的性能折衷。该r820t似乎成为一个敏感的孩子开始在更大的收益就越高160MHz。该r820t似乎更适合更高频率的信号，例如800MHz集群系统和最肯定的ADS-B还你从24MHz～30MHz得到额外的覆盖监测。

Watch and record digital terrestrial TV on PC or LaptopFull DVB-T bandwidth reception (6/7/8 MHz)Still image snapshotsTime-shiftingScheduled recordingDigital TV recording and playback as DVD qualitySupport multi-picture displaySupport EPG (Electronic Program Guide)Support TeletextWith FM functionSupport Microsoft DAB driversRemote controlSupport Windows 2000/XP/Vista/WIN7Support both MPEG-2, MPEG-4(H.264) encoding   YOU now have all the options you need for watching your favorite TV shows and play FM radio and DAB digital radio on your computer.and record them.and convert them with enclosed converting software. Then you can send them to your ipod by itunes or other MP4 device,so you can watch them any where and any time.With the product,you can receord live TV or schedule recordings using the built-scheuler.the time-shift function also allows you to pause and instantly replay your favorite scenes.You can listen to FM audio and digital DAB radio,and record them to WMA audio format into your computer.Supports windows 7 media center. With the device,you can watch live TV,and record it by windows 7 media centerUses a converting software-“Blaze video magic 3.0 “, it can convert your video file as AVI-MPEG4 ,ASF-MPEG4,MP4-MPEG4(for ipod),PSP-MPEG4,3GP-MPEG4,AVI-DIVX,AVI-XVID,MOV-         MPEG4 file,and convert your FM / DAB audio file as MP3 file.Supports LINUX OS, the driver is in “for linux” folder in CD-ROM.YOU can also find a help file there. NOTE:If you want t listen DAB or DAB+digital radio,you must make sure you have DAB or DAB+signal,and the results you received depends on the signal strength.SPECIFICATON 

Item name	Usb dvb-t stick with FM&DAB
Interface	USB 2.0 Standard
Recording format	DVBT TV-DVD(MPEG-2),FM radio/DAB radio-
	WMA
Converting format	Video:AVI-MPEG4,ASF-MPEG4,MP4-MPEG4(for ipod) ,PSP-MPEG4,3GP-MPEG4,AVI-DIVX,AVI-XVID,MOV-MPEG4 Audio: MP3
Input	75 Ohm IEC(Din) Connector
output	A type usrb male connect
Receiving frequency	DVBT:48.25 ~863.25 MHZ FM radio: 87.5~108 MHZ DAB radio: L-Band-1452960~1490624 KHZ          VHF—174928~ 239200 KHZ
TV system	Full DVB-T and DAB compliant
Punctured codes	1/2,2/3,3/4,,4/5,5/6 and 7/8
bandwidth	6/7/8 MHZ auto select for DVB-T
Power supply	Usb bus
Consumed power	≤1.5W
TV Player software	Newsoft presto! PVR
Dimension / weight	90(L) X 28(W)X 15(H) / 21G
Cable length	120cm for portable antenna
System requirements	One available usb 2.0 port
	Pentium4 cpu or above

 Product Specification :       USB2.0 Interface
      Terrestrial Antenna Input
      Dimensions: 90mm*32mm*12mm
      Weight: 32g System required:CPU: Pentium IV 1.8 GHz or aboveDirectX9.0c or aboveMemory: 128MB500M of available hard disk space or aboveCD-ROM DriveUSB2.0 slot Package Include:DVB-TAntennaInstallation CDRemote ControlUSB cable            你现在有了所有的选项,您需要看你最喜欢的电视节目和发挥调频收音机和DAB数码广播在您的计算机上。并记录他们。并将它们转换为带有封闭转换软件。然后你可以将它们发送给你的ipod以itunes或其他MP4的设备,因此你能看到的任何地方,任何时间。与产品,你可以刻录直播电视或安排使用built-scheuler录音。 节省时间的功能还允许您可以暂停和即时重放你最喜欢的场景。你可以收听调频音频和数字民建联电台,并记录他们的WMA音频格式进你的电脑。支持windows 7媒体中心。与设备,你可以观看直播电视,并记录它由windows 7媒体中心使用一个转换软件- - -“火焰视频魔法3.0”,它可以转换你的视频文件作为AVI-MPEG4,ASF-MPEG4,MP4-MPEG4(为ipod),PSP-MPEG4,3 GP-MPEG4,AVI-DIVX,AVI-XVID,MOV——MPEG4文件,和转换您的FM /民建联音频文件作为MP3文件。支持LINUX操作系统,驱动是在“LINUX”文件夹在光盘。你也可以找到帮助文件存在。

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