Name: COAX Cable Bi-Directional CATV RF Transmitter and Receiver over fiber - 45-1000Mhz Forward and Return Path 5-42Mhz
Brand: Thorbroadcast
Price: 2995 USD
Availability: InStock

Description

The Forward RF 45-1000Mhz containing CATV Channels 2-135 is being sent from the Headend to the endpoints.
The second component is a Return Path 5-42Mhz containing Data, being sent from endpoints to the headend.
Since Cable TV over coax cable service is actually Bi directional communication on different frequencies, forward path and return path.
Copper Coax is a great transmission medium, but it is losing a lot of transmission power over long-distance runs, single mode fiber solves that problem.
Thor has a solution for it and provides TX and RX devices, to replicate and simulate the bi-directional RF Point to Point over 2 Fibers.
Very useful for extendeding point to point , any CATV interactive service and Fast Cable Internet Service where bi-directional signals are being sent back and forth.
These devices convert electrical RF to optical in both directions simultaneously, it supports encrypted CATV, Clear QAM, and ATSC modulated RF.
It also supports Analog modulated RF PAL and NTSC.
Compatible with Cable TV and Internet Coax services like Comcast, Spectrum, Charter, Xfinity, Cox Communications and more.
Unit requires 2 single-mode fibers, and need to be interfaced with SC/APC fiber connectors to eliminate any reflections.

Features

The F-RFoF-TX is a dual-purpose device; Forward RF 45-1000Mhz fiber optic TX on one fiber, and also CATV RF Return Path 5-42Mhz RX on the second fiber.

The F-RFoF-RX does the opposite; Forward RF 45-1000Mhz fiber optic RX on one fiber and Return Path 5-42Mhz TX on the second fiber.

Using in pairs allows you to replace Coaxial Cable for long-distances up to 10Km.

Can also be used as a Fiber Break for copper to fiber isolation for secure areas (ie a SCIF room)

- Bi-directional RF communication

- Replicates, simulates copper Coax RF communication over two singlemode fibers

- A Side sends forward RF and receives return path RF, B side receives Foward RF and sends back return path

Features F-RFoF-TX:
1 Adjustable AGC range +2 to -7dBm
2 Working range: 5-42MHz & 54-1000MHz
3 Convenient for quick installation, the best choice for CATV network equipment
4 Using GaAs amplifier active devices
5 Ultra low noise technology.
6 Smaller size, compact, hardshell, and easier install
7 Red-LED for power supply indication.
8 Return Path Optical LED
Non-lit: optical power<-15dBm
Green: -12dBm<optical power<+3dBm
Red:optical power>+3dBm)
9 Forward RF-LED --Input RF signal indication:
RED: RF IN>85dBμV
GREEN: RF IN 75~85dBμV
LED OFF: RF IN<75dBμV)

Features F-RFoF-RX:
1 Adjustable AGC range +2 -7dBm
2 Working range: 5-42MHz & 54-1000MHz
3 Convenient for installation, the best choice for CATV network equipment
4 Using GaAs amplifier active devices.
5 Ultra low noise technology.
6 Smaller size, compact, hardshell, and easier install
7 Red-LED for power supply indication.
8 Return RF-LED
RED: RF IN>85dBμV
GREEN: RF IN 75~85dBμV
LED OFF: RF IN<75dBμV
10 Forward RF-LED --Input RF signal indication:
Non-lit: optical power<-15dBm
Green: -12dBm<optical power<+3dBm
Red:optical power>+3dBm

Drawings

Model Selection

F-RFoF-TX/RX

F-RFoF-TX: Bi-Directional CATV RF fiber optic TRANSMITTER (1550nm TX) 45-1000Mhz and Return Path RECEIVER (RX)5-42Mhz,

F-RFoF-RX: Bi-Directional CATV RF fiber optic RECEIVER (RX) 45-1000Mhz and Return Path TRANSMITTER ( 1310nm TX) 5-42Mhz

Specification

Item A	Unit	F-RFoF-TX
Return Path Optical Receiver Parameters
Optical Parameters
Input Optical Power	dBm	-12 ~ +3
Optical AGC	dBm	+2 to -7
Optical Return Loss	dB	>45
Input wavelength	nm	1260 ~ 1600
Optical Connector		SC/APC
Optical Fiber Type		Single Mode
RF Parameters
Frequency Range	MHz	5~42
Flatness	dB	±0.5
Output Level	dBμV	≥90 -1dBm?
Output Return Loss	dB	≥14
Output Impedance	Ω	75
NPR Dynamic Range	dB	≥30 dB
Forward Path Optical Transmitter Parameters
Optical Parameters
Laser Type		DFB
Output wavelength	nm	1550±10
Output Optical Power	mW	1(0dBm)
Optical Return Loss	dB	>45
Optical Connector		SC/APC
RF Parameter
Frequency Range	MHz	54~1000
Flatness	dB	±0. 5
Input Level	dBμV	80±5 (+15 to +25dBmv)
Input Return Loss	dB	≥14
Input Impedance	Ω	75
C/N	dB	≥ 51	Note 1
C/CTB	dB	≥ 60
C/CSO	dB	≥ 60
Other Parameter
Power Supply		12V/1.5A
Working Temperature	C	-25~+60
Storage Temperature	C	-40~+65
Power Consumption	W	<4
Dimension	mm	173L x 102W x 40H
Item B	Unit	F-RFoF-RX
Forward Path Optical Receiver Parameters
Optical Parameters
Input Optical Power	dBm	-12 ~ +3
AGC Range	dBm	+2 to -7
Optical Return Loss	dB	>45
Input wavelength	nm	1260 ~ 1600
Optical Connector		SC/APC
Optical Fiber Type		Single Mode
RF Parameters
C/N	dB	≥ 51	Note:1
C/CTB	dB	≥ 60
C/CSO	dB	≥ 60
Frequency Range	MHz	54 ~1000
Flatness	dB	±0.75
Output Level	dBμV	≥80
Output Return Loss	dB	≥14
Output Impedance	Ω	75
Return Path Optical Transmitter Parameters
Optical Parameters
Laser Type		DFB
Output wavelength	nm	1310±10
Optical Return Loss	dB	>45
Output Optical Power	mW	1(0dBm)
Optical Connector		SC/APC
RF Parameters
Frequency Range	MHz	5~42
Flatness	dB	±0. 5
Input Level	dBμV	75~85 ( (+15 to +25dBmv)
Input Return Loss	dB	≥14
Input Impedance	Ω	75
NPR Dynamic Range	dB	≥30 dB
Other Parameters
Power Supply		12V/1.5A
Working Temperature	C	-25~+60
Storage Temperature	C	-40~+65
Power Consumption	W	<4
Dimension	mm	173Lx 102W x40H

Question and Answers

Question:

What type of fiber is this device compatible with? MultiMode (All Types)? SingleMoe (All Types)?

Answer:

All RF products require singlemode fiber only. It's impossible to put
a digital RF signal on multimode, it flat out won't work regardless of
manufacturer. It's a physical impossibility.
Also everything we make for RF over Fiber all require SC/APC
connectors. If you don't have that kind of termination then you can
use jumper cables for the conversion.
I hope that helps. The Transmitter and Receiver set for the
F-RFoF-TxRx

Question:

1) I have been using your RCA/analog over SMF devices and I am very pleased. Zero issues.

I see you make the F-RFoF-TX/RX. This may be overkill for my needs. Basically, I just want to completely isolate areas electrically but be able to use CATV digital television and coax/cable modem internet. Providers are Comast and Charter/Spectrum. I don't have a specific distance need--max is probably 300 feet. Is this unit the most cost-effective way to accomplish this?

2)

Will the CATV unidirectional solution work for devices like the cable company’s DVRs and CableCARDs? I thought maybe those required bidirectional for subscription info, etc.

Answer:

Rep 1) In cases like this that require you use a modem, then you require bidirectional communication; then you are correct this would be the ideal solution. F-RFoF

We do have less expensive options for unidirectional CATV only, but for bidirectional the F-RFoF is the best option.

2)

It actually depends if the cable company needs to register their STB's in their headend.

The big cable Tv companies usually do that, so each STB sends the signal to the headend on the return path band 5-45Mhz, and headend sends the STB channel information for decoding.

But you might try to use just forward TX, RX 54-1000Mhz and check if that work, or call the Cable company, the problem is that only the people from headend would know details like that, most likely the customer service people would not even know.

this is link to the forward mini TX and RX

TX

https://thorbroadcast.com/product/thor-optical-mini-catv-rf-transmitter-45-1000mhz.html

RX

https://thorbroadcast.com/product/thor-fiber-optical-mini-ftth-rf-catv-cable-tv-receiver-8230.html