Rf digital modulator: QAM/DVB-T/C RF Modulators | RF Modulation

RF Modulators | HDMI RF Modulators

ATX Networks

Item# PM-PCM55SAW-58

The ATX Network PCM55SAW-58 is a 550 MHz Channelized PLL SAW-filtered A/V Modulator. It delivers 55 dBmV minimum output for a 64 dB in-band carrier to noise ratio to provide superior picture quality. It has an 82 Channel frequency range 54 MHz to 550 MHz (CATV 2~13, A1~A5, A~PPP). The PCM55SAW is BTSC Stereo compatible with a disable switch to provides pass-through for stereo signals. Front panel controls and a convenient -30 ±10 dbMv output test point. Choose from several channels.
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What does rf modulator do? Do I need it? Where to buy

Table of Contents

• What is a RF Modulator?
• What is RF coaxial cable?
• How do rf modulators work?
• Best RF Modulators:
• What does rf modulator do? Do I need it? Where to buy
• 4 HDMI & Component HD to COAX and IPTV HD 480i/720p/1080i/1080p CC Modulator
• 2 HDMI YPbPr HD Digital TV Modulator QAM ATSC DVB-T IPTV 1080p/60
• IPTV to 16/32 CLEAR CHANNEL RF QAM/ATSC Modulator
• ASI to QAM or ATSC CATV RF Modulator
• CATV RF MODULATOR – HDMI Multiplexer
• 8 channel HDMI and SDI Clear CATV RF Modulator QAM, ATSC, DVB-T, ISDB-T
• Petit HDMI RF MODULATOR
• How to Connect a RF Modulator
• Do i need an rf modulator?

What is a RF Modulator?

A RF modulator is an electronic piece of equipment that provides a baseband signal which is used to transform a radio frequency resource.

RF modulators are used to alter signals from devices such as VCRs, DVD players, media players, and game consoles to a format that can be handled by a device designed to receive a modulated RF input, for example, radio and television receivers. The RF modulator converts the video (and/or audio) output of a DVD player (or camcorder or video game) into a frequency which can be assigned any channel that is compatible with a TV’s cable or antenna input. There are many RF modulators available, but all function in a similar manner. RF modulators may also be used to take the audio and video signals from a PAL or NTSC/ATSC composite video, RGB, or other composite AV source, and produce a broadcast RF signal that can be fed into a television’s aerial/coaxial connector.

Multi-channel RF modulators are normally used in any place that requires audio/video distribution like stadiums, homes, hotels, malls, airports etc. These devices have numerous audio and video inputs and one RF output. Audio/video outputs from source devices such as a DSS receiver, DVD player, VCR, or are coupled to the audio/video inputs on the modulator. The modulator is then programmed to transmit the signals on a certain channel. The RF signal is then received by the connected TV. When the TV is tuned to the programmed channel, the signal of the source device is accessed. RF modulation can become complex in a CATV system. High pass, low pass, and notch filters must be used to obstruct certain frequencies, so that the modulator can transmit the signal of the source device on that channel. Commercial modulators such as those used in the CATV industry generally include residual sideband filtering which is usually lacking on consumer grade modulators. Audio RF modulators are used in low-end car audio to attach devices like CD changers with no requirement of dashboard hardware upgrades. For example, a portable CD player’s headphone jack is linked to the modulator, which outputs a low-power FM radio signal that is played through the car radio. Car FM modulators experience failure of value and interference issues. Soon after devices which would use these types of modulators would be MP3 players and related mobile media players.

What is RF coaxial cable?

Coaxial cable is used as a transmission line for radio frequency signals. Its applications consist of feed lines connecting radio transmitters and receivers to their antennas, computer network (Internet) connections, digital audio (S/PDIF), and distributing cable television signals. Advantage of coaxial over further types of radio transmission line is that in an ideal coaxial cable the electromagnetic field carrying the signal exists only in the space between the inner and outer conductors. This allows coaxial cable runs to be installed next to metal objects such as gutters without the power losses that occur in other types of transmission lines. Coaxial cable also provides safeguard of the signal from outside electromagnetic interference. Coaxial cable conducts electrical signals using an inner conductor (generally a solid copper, stranded copper or copper plated steel wire) enclosed by an insulating layer and all enclosed by a shield, typically one to four layers of woven metallic braid and metallic tape.

The cable is confined by an outer insulating jacket. Normally, the shield is kept at ground potential and a signal carrying voltage is applied to the center conductor. The benefit of coaxial design is that electric and magnetic fields are restricted to the dielectric with little leakage outside the shield. Equally, electric and magnetic fields outside the cable are mainly kept from interfering with signals inside the cable. Larger diameter cables and cables with various shields have less leakage. This property makes coaxial cable a good choice for carrying weak signals that cannot endure interference from the environment or for stronger electrical signals that must not be allowed to radiate or combine into nearby structures or circuits. The characteristic impedance of the cable is determined by the dielectric constant of the interior insulator and the radii of the inner and outer conductors. A restricted cable characteristic impedance is essential because the source and load impedance should be matched to make positive maximum power transfer and minimum standing wave ratio. Other significant properties of coaxial cable include attenuation as a function of frequency, voltage handling capability, and shield quality. A coaxial RF connector (radio frequency connector) is an electrical connector intended to work at radio frequencies in the multi-megahertz range. RF connectors are typically used with coaxial cables and are intended to preserve the shielding that the coaxial design offers.

Coaxial cable is a type of transmission line, used to carry high frequency electrical signals with low losses. It is used in such applications as telephone trunk lines, broadband internet networking cables, high speed computer data busses, carrying cable television signals, and connecting radio transmitters and receivers to their antennas. It differs from other shielded cables because the dimensions of the cable and connectors are controlled to give an accurate, even conductor spacing, which is needed for it to function efficiently as a transmission line. Widespread applications of coaxial cable include video CATV distribution, RF, microwave transmission, computer and instrumentation data connections.

How do rf modulators work?

Radio frequencies are electromagnetic waves operating between 10 (khz) and 1 (Ghz) propagated without guide (wire or cable) in free space. If you have a personal computer that lets you use your home TV set as a video display device, then the computer has a RF generator. This means that this device is generating a RF carrier to carry the video signal information. For the purposes of the FCC’s regulation of cable television systems, this term includes any carrier, modulated, or unmodulated, whether radiated over the air by an antenna or carried by a coaxial cable. This term dates from the early days of radio (hence, the name “radio” frequency) when the only uses for RF were AM broadcasting and ship-to-shore communications. The term is still used today, even though it now includes video and control signals as well as audio.

What precisely does modulating the signal entail? Modulation is transmitting a signal over an extensive range, which will cause to it to suffer from attenuation. Attenuation is a general term indicating a decrease in power (loss of signal) from one point to another. This loss can be a loss of electrical signal. The loss is measured as a ratio of input power to output power. Attenuation is caused by poor-quality connections, defects in the cable and loss due to heat. Attenuation is the opposite of gain. The resolution to avoid such loss is to modulate the signal.

Pic: Example of professional RF Modulator:

The method of modulating the signal means the integration of a signal with another wave of a higher frequency. This reduces the attenuation throughout the transmission of waves over long distances and it increases the range. RF signals are surrounded by the highest frequency signals and are useful in carrying information over large distances. For modulating the signal, what we require is a RF modulator. Likewise, the signal that is received at the other end needs to be demodulated before it can be changed into a usable form. So at the signal reception point, we need an RF demodulator.

The fundamental construction of an RF modulator is not very complex.

The signal that needs to be modulated is taken in as input. It is first passed through a comparator (electronic circuit for comparing two electrical signals) and then through a low noise amplifier (LNA).
The low noise amplifier amplifies the input signal.This is accomplished because the signal loses some power during the transmission and this step is taken as a deterrent measure. The output of the low noise amplifier and the radio frequency wave is mixed in a mixer, to generate the modulated signal. This is the critical method of a modulator’s working. But the procedure of radio frequency modulation has a vast number of variations. There are plenty of additional modulation techniques that can be used, for example: Phase Shift Key (PSK), to modulate the signals with the radio frequency. In general, radio frequency modulation is done digitally nowadays. The audio and video signals are RF modulated, before transporting them to the television antennas or cables, which works at that frequency. The modulation and demodulation of the signal, at both the ends, is often the reason behind the good picture and sound quality.

However, current RF modulators that comes integrated into our VCD players, DVD players or gaming system, cause nominal or no damage to the picture and sound quality. Many televisions, mainly the ones manufactured before the advent of DVD players, use coaxial cables and do not have proper A/V inputs. In such cases, you need to buy a peripheral RF modulator to provide your objective. They need an external power supply and if you are using one, then please be sure that you have a power source near your television set. Numerous people are perplexed with RF modulators with video switchers.

Video switchers are devices that help you in connecting more than one device to a single terminal, whereas an RF modulator helps you in attaching those devices to your television. Radio frequency modulators are also used in the fields of defense and aviation. In effect, all radars send signals within the range of radio frequencies. In the aviation industry, the information that is sent to flights is also required to be radio frequency modulated.

Best RF Modulators:

This RF Modulator has 4 HDMi inputs and Closed Caption. The platform provides 5 full RF carrier outputs for generating channels from content ingested through the ASI input. Encoding in either MPEG2 or H.264 is provided for 4 crystal clear video streams up to 1080p 60 each HDMI to coax , HDMI to IPTV ,HDMI over coax

Features

• Broadcast over existing Coaxial Cabling to an unlimited number of Televisions with FULL HD
• Perfect for Professional Stadiums and Arena’s
• #1 in Live Sports and Entertainment 
• Broadcast Live HDMI & YPbPr Video as Cable TV & IPTV Channels.
• Licensed HDMI inputs – works with any source like DVD, Blu-Ray, or any STB
• Convert HDMI & Component YPbPr HD Video to HDTV Channels
• Any 1-4 HDMI & YPbPr Inputs up to 720p / 1080i / 1080p
• Licensed HDMI inputs – works with any source like DVD, Blu-Ray, or any STB
• 4 HDMI Cables FREE
• Support DD AC3 (2. 0 / 5.1 / 7.1) passthrough (for HDMI interface only)
• Support CC (Closed Caption) EIA608 (from CVBS input)
• 1-4 CATV RF Output up to 4 Adjacent channels
• QAM-256/64, DVB-T & ATSC formats available
• Fully IP Control and Network Management through browser
• Front Panel LCD local control   
• IPTV Output Unicast or Multicast IGMP UDP, RTP / RTSP
• ASI Output multiplexer with cherry picking
• Low Latency available 70-120ms
• Dolby AC3 or MPEG1/2 Audio Encoding
• MPEG2 or MPEG4 H.264 Video Encoding
• Firmware for ATSC, DVB-T, DVB-S2 Available
• VCT (Virtual Channel Table) support for DVB-C and ATSC
• LCN (Logical Channel Number) support
• 5 Years warranty

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2 HDMI YPbPr HD Digital TV Modulator QAM ATSC DVB-T IPTV 1080p/60

Thor Broadcast CMOD series compact encoder modulator with support for the Dolby AC/3 audio codec. This model line provides support for legacy USA tuners requiring the AC/3 audio codec for proper decoding.

Features

• Dual HD or SD channels in compact encoder modulator form factor
• Supports both MPEG-2 or H.264 video encoding codecs
• Supports Dolby AC/3 audio passthrough up 7.1 channels
• Models available for ATSC, DVB-C, or DVB-T Television (unit comes loaded with QAM & ATSC modulation standards)
• Supports IPTV output in UDP format for unicast or multicast
• Supports EIA 608 type closed captioning on analog input
• ASI input and multiplexing function provided with ASI output

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This 1RU chassis has 2 GE inputs with SFP interface allowing up to 1024 channels TS streams of UDP/RTP, unicast and multicast streams.This Device is a QAM modulator for IP Edge QAM / ATSC /DVB-T /ISDB-T applications.

Features

• IPTV Modulator includes 2x Gigabit Ethernet input interfaces
• 16 Clear QAM Channel Outputs – Non-Adjacent 50-960Mhz
• Maximum 1024 Channels TS over UDP, RTP & Unicast / Multicast
• Output Of RF on 16 Multiplexed, Scrambled, or QAM (DVB-C) Channels 
• Gigabit Ethernet is serviced by SFP interface
• Supports Unicast and Multicast, supports IGMP v2 / v3
• Max 840Mbps for each GE Input
• Supports Up to 180 PIDs per channel with PID remapping (manual or auto)
• Web NMS (Network Management Software) for easy online access and management

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ASI to QAM or ATSC CATV RF Modulator

This Unit has DVB-ASI input and can modulate on any CATV RF QAM carier video TS streams – QAM or ATSC or DVB-T or ISDBT

Features

• Fully complying with DVB-C(EN300 429), ITU-T J. 83A/B/C standard
• Symbol rate adjusting range: 5.0Msps~9.0Msps
• Five constellation modes: 16QAM, 32QAM, 64QAM, 128QAM and 256QAM
• ATSC, DVB-T, ISDB-T modulations avaialble – model dependent
• ASI input
• Scrambler
• Web NMS Interface
• SNMP
• Huge buffer memory for the burst code stream
• Intelligence null packet deleting, automatically TS filling
• PCR accurate adjusting
• NIT insertion
• PID filtering, re-mapping and PSI/SI update synchronously
• Output frequency range: 30MHz~1000MHz in 1 kHz step
• Output frequency attenuation range: -16dBm~+12dBm in 0.5dB step
• LCD and keyboard operation
• NMS operation

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This Unit has 12 HDMI inputs which are beeing converted to CABLE TV Channels for easy HD video distribusion over COAX. In addition it also has IPTV output for IP Network Multicast

Features

• 12 HDMI inputs with 12 CC inputs via CVBS
• (Data 1 port) over UDP and RTP
• MPEG1 Layer II; Dolby AC3, AC3 pass through ; MPEG-2 AAC, MPEG-4 AAC
• HD (1080i/720p) to SD (576p/480p) downscale conversion
• 1MPTS and 24 SPTS IP (DATA1 and DATA2 port) output over UDP, RTP/RTSP
• ASI output mirrors one of the RF carriers
• PID remapping/ accurate PCR adjusting/PSI/SI editing and inserting
• Control via web management NMS
• 16 Groups Multiplexing/Scrambling/ DVB-C QAM ANNEX A and B  Modulating (based on RF)
• 8 Groups Multiplexing/ DVB-T/ATSC Modulating (based on RF)
• 6 Groups Multiplexing / ISDB-T Modulating (based on RF)
• Up to 16 MPTS IP (Data2 Port Only) output over UDP, RTP/RTSP (# of MPTS is based on RF standard of device) (16MPTS for DVB-C; 8MPTS for DVB-T/ATSC; and 6MPTS for ISDB-T)

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8 channel HDMI and SDI Clear CATV RF Modulator QAM, ATSC, DVB-T, ISDB-T

This Device is an 8 HDMI or 8 SDI Digital modulator with 8 Independent clear channels. This Unit Provides 8 HDMI or 8 SDI Clear QAM and ATSC Signals

Features

• 8 Independent HDMI and SDI Inputs – (individually selectable for each of the 8 channels you can output) 
• HDMI is HDCP compliant for use with any source
• SDI Inputs include support for Closed Caption 708
• Outputs 8 separate Clear CATV RF channels QAM / ATSC – 8VSB / DVB-T / ISDB-T  (selectable in the GUI)
• RF output on each of the 8 RF channels can be individually set to a frequency and modulation standard (2 on QAM, 3 on ATSC, 4 on ISDBT, etc)
• DVB-C Annex A and B – QAM 64, QAM 256
• Supports full HD video up to 1080p/59.94/60, other resolutions included are 1080i, 720p, 480i also supported
• Low Latency supported; 3 different latency settings – 100/500/1000ms 
• Video encoding rate up to 25Mbps
• MPEG2 Video Encoding
• Dolby AC3 and MPEG1 Layer 2, & AAC audio encoding
• VCT – Virtual channel number and Name supported
• Frequency – 50Mhz to 900Mhz
• NMS web interface controllable
• Easy to use web Gui Interface (setup and status)
• LED’s Status on front panel shows HDMI in blue or SDI in green for easy to see video detect link
• LCD Display and front panel control buttons for setup, control and status
• Powerful processing with the best MPEG2 video encoding chip
• First High Density HDMI and SDI input modulator on the market
• Lowest cost per channel in perfect HD resolution for any application from Live Sports, House of Worship, Concerts, Theaters, Malls, Airports, Hotels, Military, Private Enterprise

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Petit HDMI RF MODULATOR

This Modulator is an All In One Device Integrating HD MPEG2 encoding with AC3 Dolby Audio and Closed Captioning Input. Device Converts HD Audio and Video signals from any device into DVB-C/T / ATSC / ISDB-T RF Output. This Unit is a Digital HDMI Encoder and RF CATV ATSC Modulator with Closed Captioning Input and Network Ethernet browser contol.

Features

• HDMI Input – HDCP compliant ( works with any HDMI device )
• 10/100 Ethernet NMS port for control, setup, and monitoring
• RF output could be set to any CATV format as QAM, ATSC, DVB-T, or ISDB-T 
• RF output power is +24dbmv; enough for distributing HDTV video to 100’s TV over the existing coax cable network
• RF power could be controlled over the network via NMS Gui (Proprietary)
• MPEG2 video encoding
• AC3 Audio encoding
• Video bit rate 1-19.5Mbps can be managed over the network
• Supports any CATV RF agile channels from 57-1000Mhz, channels  2 -135,
•  Supports output resolutions up to 1080p
•  Easy to set up via NMS.
•  Small size and lightweight
• Includes wall-mount type rack ears
•  Install multiple units onto your TV system
• The powerThe supply is included
• The HDMI cable is included

Additional optional accessories:

H-PS-12X16 –  Rackmount 19″ Power Supply 16 port 12V 1. 5A DC

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How to Connect a RF Modulator

Connecting a digital cable box, VCR, and DVD player to a TV that doesn’t have AV inputs for the DVD player is a dilemma for people who have coaxial-only televisions. Because DVD players don’t have coaxial (RF) outputs, they can’t be attached straight to a television with only a coaxial (RF) input. The answer is to acquire a RF modulator, which is a little gadget that converts the AV output from the DVD player to coaxial (RF).It seems as if each home garage across the country has an old, idle TV set sitting inside collecting dust. People don’t use them because they think that they can’t use today’s technology, including VCRs, DVDs, MP3 players, camcorders and gaming systems. With a radio frequency (RF) modulator, it’s all possible.

The modulator converts the picture and sound coming from your DVD or gaming system and displays it on the TV screen.  Connecting a stereo or TV to a RF modulator:  If you’re connecting the RF modulator to a stereo or TV, take the three plugs that are connected to the modulator and plug them into the video and audio output jacks on the stereo system. There will be corresponding colors on both the plugs and the output jacks so you know where to put each plug. Plug the modulator’s electricity cord into a power outlet. Turn both the modulator and the stereo or TV on to check that you connected them properly. Connecting to a different VHF input source into a RF modulator to both a TV set and a VCR, DVD or cable box is easy. Begin by disconnecting the VHF input source’s 75-ohm cable from the TV’s terminal and connecting it to the terminal in the back of the modulator marked ANT IN. Then get a 75-ohm coaxial cable (often provided with the RF modulator or it can be purchased online) and connect it on the modulator’s terminal marked TO TV terminal and to the TVs terminal marked 75-ohm VHF/UHF. Plug the modulator’s electricity cord into a power outlet. Turn on all three devices to make certain that you connected them correctly.

Do i need an rf modulator?

If you need a device to convert voice and data signal into a form that can be transmitted then you need a RF modulator. It is also designed to convert separate audio and video signals from a video camera, computer, portable VCR or satellite receiver) into VHF TV signals. It is ideal for TV’s that don’t have composite video inputs. It is also used to run a secondary TV with the same programming. RF Modulators have become popular in cases where you may need a single signal that is generated by a DVD player, video camera or other device that needs distributed to hundreds of TV’s.

In cases like this it is expensive to place a Cable STB and Satellite STB at every TV, so inherently using a low cost or professional DVB modulator eliminates that need because you can use one STB connected to a RF modulator which can be distributed to unlimited television sets via coaxial cable as long as the televisions.

Sports stadiums are a great tool for showing how these can bring down the overall costs since when you’re at a sporting event and head to a snack stand or use the bathroom, walking through the event halls you’ll see televisions littered everywhere showing the event you’re attending so you don’t miss out on the action.  

DVB-T2 receivers with RF modulator | Digital TV

RF modulator allows you to connect to any TV that has only an antenna input.

i.e. it is the most versatile way to connect to any TV.

For example, some Sony TVs came with only one antenna input (and even if you try to make a video input for the usual “tulips” in them, you will have to install a bunch of additional parts).

Currently only 4 models in the Russian market are equipped with an RF modulator:

• Openbox T2-02 M – Novatek NT78316M and NT78336
• Cadena ST-603AD – Novatek NT78336
• World Vision Premium – ALi M3821
• GoldMaster T-707HDI – MStar MSD7T01

I note that all of the above have Dolby Digital/Dolby Digital Plus licenses.

For example, you can connect a set-top box in the hall (tulips, HDMI or HF) and at the same time watch in the kitchen through the existing home cable distribution: i.e. looked in the hall, then went to the kitchen, continuing to look. That. you can not buy a kitchen TV – a separate set-top box.
Of course, if you want completely independent simultaneous viewing of different channels, then each TV should have a separate set-top box.

You can, for example, even organize your own mini-cable TV in a small hotel by connecting let’s say 10 set-top boxes to the antenna and, accordingly, broadcast 10 channels to the local cable network in the usual analog form for any TVs.

There is also a ready-made solution based on Cadena ST-603AD (OEM manufacturer is the same as Openbox T2-02 M ).

All of the listed models use the Rafael Micro RT500 RF modulator chip.
There is also a separate option purely for the American market RT5 34 – only with 3 and 4 channels of the American MV band 61.25MHz & 67.25MHz, respectively, and the bandwidth is only 6 MHz (and not 8, as we usually do).

In the RF modulator menu, you can select any UHF channel from 21 to 69 (although the chip itself is all-wave – from 40 MHz to 900 MHz), as well as the sound standard.

The modulator itself can output a signal in any of the three systems – PAL, SECAM, NTSC, but the processors of the set-top boxes output only PAL or NTSC video, so, for example, if you connect it to the first Soviet color TVs without a PAL-SECAM decoder, the image will simply black and white.
However, even if you make a separate video input in such TVs and connect with the usual “tulips”, then still without a PAL-SECAM decoder, the image will be black and white. Although, of course, it is already difficult to find such old TVs working now.

Some probably sometimes noticed that on the board next to the tuner or next to the tuner unit there is free space for a chip approximately the same size as the tuner:

An example of the spectrum of channel 38 in the PAL D/K system (red lines mark the frequency boundaries of the channel):

As you can see, the real spectrum is symmetrical with respect to the carrier frequency of the luminance signal (in the center of the graph) and, accordingly, climbs onto the adjacent lower frequency channel.

The smaller blue peak is the chrominance subcarrier and the outermost peak is the audio carrier. Accordingly, the carriers change depending on the system (PAL/NTSC) selected in the menu and/or the audio standard.

These attachments can also be used as RF signal sources, for example, to evaluate the frequency response of antenna amplifiers in the UHF range, analyzing the signal using a suitable USB whistle and, for example, RTLSDR Scanner or other similar programs.

I will dwell separately on the last model in the list – GoldMaster T-707HDI, I will immediately notice that several variants have been released over the past years T-707HDI and in different cases, but only in the latest version on the MStar MSD7T01 processor an RF modulator appeared, which is noted on the box:

Full photo of the box. The real OEM is the well-known ABLEE (chassis ABL ).

You can distinguish from previous versions of the T-707HDI by marking the antenna jacks ANT -IN, ANT -OUT and the absence of a black COAX RCA jack for digital sound:

RF modulator to select the channel number and SOUND for the sound standard:

Well, of course, unlike the other set-top boxes listed, you should not expect any software support here. And in general, it was not possible to find at least some even the most seedy website of the GoldMaster trademark.

At the same time, some nuances of functioning are noted:

Features of the RF modulator:

1. The RF output is mixed into the spectrum of the signals from the antenna.
2. The frequency grid has been shifted by 3 MHz. This is not a problem for TVs, but can be a problem for non-tunable LNBs.

The cost of the GoldMaster T-707HDI is lower than the other listed models – 1000 rubles.
Classic console, medium size.

Well, the general principles for any models: when setting the UHF channel number for the HF modulator, it is advisable not to select the numbers of on-air channels so as not to intersect with them to minimize possible mutual interference.

And, if possible, choose one of the low-frequency ones, for example, 21 channels, because the lower, the more long-range and less attenuation in the cabling around the apartment.

Update as of March 27, 2019:

Currently, only 2 models with an RF modulator are on sale:

World Vision Premium — from 1400 rubles.

and new for MStar MSD7T01 and Rafael Micro R836:

Cadena CDT-1891M — from 1100 rubles.

socket signed – RF output:

You can ask questions about digital television on the DVBpro forum

Author: Alexander Vorobyov, 02 Oct 2017 | Permanent link to the page: http://dvbpro.ru/?p=19512

RF Modulator Gecen GC-AV04 (Stereo) – Wiring Elements

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• RF Modulator Gecen GC-AV04 (Stereo)

RF Modulator Gecen GC-AV04 (Stereo)

0
0

RUB
not available

1950

TV modulator Gecen GC-AV04 is used to convert a low-frequency signal into a high-frequency signal in the decimeter and meter range. Modulators are ideal for RF signal distribution from satellite receivers, media players, DVD players, game consoles, as well as for video surveillance systems, etc. Built-in AC power supply 220V. The connection to the device goes through a standard “tulip” cord. The sound is stereo.

Modulator with wideband output Ch3-CH69/S1-S41, you can set its RF output to any of 42 channels with output level of 90dB, the modulator has a digital display for setting the operation frequency and audio carrier 5.5/6.0/6.5 MHz, high frequency stability, double-sideband modulation.

Specifications:

• LED display
• Built-in microprocessor control
• Operating frequency range – 47 – 870 MHz
• PLL Quartz Stabilized Video and Audio Carrier Frequencies
• Built-in power supply
• Audio level control, RF output level
• Tamper protection
• RF pass-through summation

Connectors:

• Video/audio – type 3xRCA socket
• HF-type F

Vu+ Zero 4K Receiver

Such advice never buy a VU+ made in China is shit squared

vladimir shevchenko

Vu+ Uno 4K SE receiver

In general, the VU+ line is the best receivers, well, and Dreambox, well, the rest is just not serious,

vladimir shevchenko

Receiver Vu + Zero 4K

I advise everyone these receivers, of course you need knowledge about enigma 2-links, you can read on the forums, the image of BLACK HOLE is the most advanced-beautiful-I advise everyone VU + receivers, only the Korean manufacturer MARUS, do not take Chinese -full bullshit – with respect, kovsem vladimir

vladimir

Receiver HD BOX S2

good receiver for the money . ..

Sergei Mezevetov

Receiver Zgemma H9 TWIN

in general, the receiver is good, suitable for watching TV and distributing via IPTV

Nikita Mediankov

Receiver HD BOX S2

Victor Kotlyarov I want to tell you to buy a cooling pad for a laptop on this stand, put your tuner and there will be no heat, otherwise the tuner will burn out.

Dmitry SHAPOREV

Receiver HD BOX S500 CI PRO

I have been using the HD BOX tuner for 1 month since I ordered it, the tuner works fine, the latest firmware has been installed, everything has been set up sharing, it pulls YouTube without problems, edem tv, HDrozetka movie line, everything also works MI-2T or as it is called multistream pulls did not try the cards and the cam module, and so the tuner will work.

Dmitry SHAPOREV

Openbox AS4K CI Pro 9 receiver0004

Can you tell me how to set up a local network? So that everything went on it to the bodies, who will say?

OLGA KSHNYAKINA

Receiver Sezam Marvel Combo

The functionality of the receiver is really good for the money, but problems with the PSU greatly spoil the impression.

Alexander

CONSENT TO PROCESSING OF PERSONAL DATA

I hereby confirm that I have read and agree to the terms of the Policy regarding the processing of personal data.
I hereby give permission to LLC Antenny Market (hereinafter referred to as the Antenna Market) in order to inform about the goods and services of Antenny Market,
conclusion and execution of the contract of sale process – collect, record, systematize, accumulate, store,
clarify (update, change), extract, use, transfer (including entrusting processing to other persons), depersonalize, block,
delete, destroy – my personal data: last name, first name, gender, date of birth, home and mobile phone numbers,
e-mail address, as well as data on interests based on an analysis of my search queries and visits to Internet sites.

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