HV110 and HV120 DVB-T Receiver

2014´   2017´

We have been waiting for this device for years, now it is here: small, compact, simple to use and
affordable. It is a stand-alone DVB-T receiver for rf bandwidths between 2 and 8 MHz and a frequency
range from 170 to 950 MHz. The designer made one mechanical fault: you cannot use
CVBS (analog) and HDMI (digital) output ports at once because of the narrow placement. Switching
between narrow and wide bandwidth is done at the back side, and the SMA input does not provide
an in-line power supply for pre-amplifiers.
But that is all of my criticism.
The HV-110 is very small (10x7x4 cm), needs only 600 mA with 5 V DC and no PC support, but
brings a pre-programmed channel listing for 23cm and 13 cm bands (with down-converter). It
can receive narrow-band as well as wide-band COFDM signals and saves searching results
automaticly, but you can choose manually frequency and bandwidth too. As accessory an analog
cable for FBAS video and stereo audio is enclosed, the end user price will be 159 US Dollar
according to HiDes (Taiwan).
Test Results:
On my lab table without QRM I managed to get perfect video and audio reception with only -102
dBm input rf level, at -105 dBm none of it, using the HV-100EH TX with 16QAM, 2 MHz BW,
MPEG-2 on 436 MHz. The HV-110 receiver is made for H.264 (MPEG-4) video signals, but
accepts MPEG-2 video too.

Using a DC101 TX on 474 MHz with H.264 video and 4 MHz BW and a HV-100EH TX on 436 MHz with MPEG-2
video and 2 MHz BW the searching function incl. saving was successful, and switching
between both channels by remote control needed about 3 seconds.
For parallel use of HDMI and CVBS ports you have to solder a small patch cable to FBAS video
and audio feeding points on the PCB (no modification planned by HiDes). If you need in-line
power supply for a pre-amplifier, attach a T-Bias Feed at the rf input. Avoid strong rf signals as the
sensitivity could get worse!
Update:
In a sensitivity contest I compared the HV-110 and a SR-Systems receiver with the following configuration.
TX signal source is a HV-100EH, set to MPEG-2, 436 MHz, 2 MHz BW, 16QAM, Pout 0dBm with a fixed 30 dB attenuator in series with a variable attenuator and coax jumper cable. Loss of decoded video and audio signal with SR-Systems
receiver at -87 dBm, the HV-110 receiver lost signal at -106 dBm, the UT-100B&D receivers lost signal at -107 dBm.
With levels below -100 dBm no pre-amplifier is needed, more important is a good aerial and an
input filter against unwanted neighbour signals.
Practical conclusion, if you can receive a 70 cm narrow-band voice FM station with S5 level, there
is a chance to get a DVB-T 2 MHz BW video signal with HV-110 at equal power, aerial and propagation
conditions.
From TV-AMATEUR 172 http://www.agaf.de
Translation to English by Klaus Kramer DL4KCK. 

HV120  Receiver

HV-120 is a 1080 Full HD receiver box which receives and decodes DVB-T (ETSI EN 300 744) HD/SD terrestrial broadcast signals. It features the video output of HDMI and Composite (CVBS) for DVB-T.

Besides remote controller, HV-120 can be configured and controlled thru its UART port by an external host.

HV-120 can decode the mux’ed UART data in received streams and output thru its local UART port.

In addition to standard TV band (100~950MHz), HV-120-1.2G can tune 1.2GHz band while and HV-120-2.4G can tune 2.4GHz band.

Besides 1.2G and 2.4G, other band support is available on request.

Various channel bandwidth receptions are supported, including 2, 2.5, 3, 4, 5, 6, 7, and 8 MHz.

Features

Ø   Standalone Digital DVB-T receiver

Ø   Support 1080 Full HD H.264 and MPEG2 decoding

Ø   Frequency Band Support

n   Standard TV VHF and UHF band (100~950MHz)

n   Options for

u  1.2GHz band

u  2.4GHz band

u  950~2650MHz band

Ø   Two Antenna SMA connectors

n   One for TV VHF and UHF band (<=950MHz)

n   One for >950MHz  band reception

Ø   Composite video output/ Stereo Analog (L/R) output

Ø   Digital HDMI audio and video output

Ø   On-Screen Display Menu

Ø   Automatic or manual channel scan

Ø   2/2.5/3/4/5/6/7/8 MHz Bandwidth support

Ø   12V active antenna supported (up to 300mA)

Ø   Demultiplex UART data in received TS transmitted by Hides transmitter.

Ø   UART control interface for external host

Ø   Optional LCM configuration tool (HL-100) is also available.

RF Inputs
Frequency	HV-120-1.2G	100~950 MHz and  1200~1300MHz
	HV-120-2.4G	100~950 MHz and  2400~2500MHz
	HV-120-A	100~950 MHz and  950~2650MHz
Bandwidth	2/2.5/3/4/ 5/6/7/8 MHz
Demodulation	COFDM (ETSI EN 300 744 DVB-T)
FFT mode	2K, 4K, 8K
Constellation	QPSK, 16QAM, 64QAM
Guard interval	1/4, 1/8. 1/16, 1/32
Inner coding rate	1/2, 2/3, 3/4, 5/6, 7/8
Pmin (Sensitivity) 8MHz BW 64QAM CR7/8 GI1/32 8K FFT	474Mhz		<-81dBm
	666MHz		<-81dBm
	858MHz		<-81dBm
	1250MHz		<-76.5dBm
	2450MHz		<-76dBm
Noise Figure	1.2G band		1.5dB
	2.4G band		2dB
Video
Formats	MPEG-2 MP@ML, MPEG-2 MP@HL MPEG4 AVC/H.264 [email removed by eBay], MPEG4 AVC/H.264 HP@L4.1

Output	Digital HD video, CVBS
Aspect ratio	4:3 and 16:9 (Letter Box, Pan & Scan)
Audio
Decode	MPEG-1 layer I/II, MP3, MPEG-2 layer II, MPEG-2 AAC, MPEG-4 HE-AAC
Sampling rate	32KHz, 44.1KHz, 48KHz
Output	Stereo line-out and HDMI digital output
Front panel
IR remote 7-segment LED display: Status LED :Power and Channel lock status
Rear panel
Power-in (DC Jack or Micro-USB) Two SMA RF-in CVBS/Audio-L/Audio-R Jack Digital HD video Bandwidth switch (2/2.5/3/4/ 5/6/7/8 MHz)
Power Supply	12 VDC Typical Consumption 5.4 Watt (450mA)

Dimension	W(105 mm) x D(75 mm) x H(35 mm) (Bare bone PCBA size: 100mmx70mm)
Weight	175g (Bare bone PCBA weight 55g)

Model Number	RF-in filter for >1GHz band	Frequency Band Supported
HV-120-1.2G	1.2G Saw Filter*	100~950 MHz and 1200~1300MHz*
HV-120-2.4G	2.4G Saw Filter*	100~950 MHz and 2400~2500MHz*
HV-120-A	None**	100~950 MHz and 950~2650MHz**
HL-100R (optional)	LCM configuration tool
Ø  *There is a saw filter in the RF front end. The saw filter limits the reception range but minimize ACI (adjacent channel interference) Ø  **When the saw filter removed, full band range is supported but poorer ACI.

You can buy it here:             https://www.ebay.com/str/HiDes168