Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

how boost cable tv signal

Status
Not open for further replies.

ehsanelahimirza

Full Member level 6
Joined
Feb 24, 2006
Messages
334
Helped
28
Reputation
56
Reaction score
7
Trophy points
1,298
Activity points
3,570
cable tv booster circuit

plz tell me how to boost up a tv cable signal

if possible give me a small circuit
 

how to boost cable signal

Low noise or high power..
You should first answer this question because of circuit topologies are very different.
Which band will you use it?? VHF,UHF or both ??

If you don't know anything about wideband amplifier design, use "ready to use" amplifiers from WJ, Sirenza,RFMD, Anadigics, Mini Circuits etc...

To implement an very wide band amplifier is quite difficult..
 

cable tv signal noise

Hi,

Cable TV signals are usually very strong, I don't understand why you want
to boost them even more. I would first check all the cables and splitters
before taking action and replace them with high quality material if necessary.
A better cable is always better than the best amplifier and a lot cheaper.
But if you really must, look here: **broken link removed**
Download the manual and look at pages 31 and 32.
Here you will find the right amplifier, the kind of amplifiers cable companies use
in their networks. They work extremely well, I use them for all sorts of purposes.
And they are also easy to use: Bolt one to a heatsink, connect the power supply,
usually 24 V / 500 mA, ( they're hungry as well) , connect input and output cables
and you are ready to rock & roll. That's it, but it's gonna cost you !
RF-Parts in the U.S. has some, look at the price and decide.

on1aag.
 

boost cable signal

actually i m using cable in one room

in other room a low quality picture is obtained without using a wire i.e. through Antena

i wanted to make the sisnal from cable strong in air

or the other way is to use a booster at receving antena
i m prefering receving

that the signal is catched from antena then boosted up then given to TV

how about it
 

cabletv signal

you must check the signal level and the matcing impedence too.
if not necessary, do not use BALUN.
YOU MAY USE NORMAL AMPLIFIER CKT. DEPENDING ON FREQUENCY OF OPERATION.
 

tv cable wire and boosted signal

hamdard said:
you must check the signal level and the matcing impedence too.
if not necessary, do not use BALUN.
YOU MAY USE NORMAL AMPLIFIER CKT. DEPENDING ON FREQUENCY OF OPERATION.

these r the things i m asking my friends(u people) including circuit

1st one i think would be good enough but if i want to boost signal at receving point
i mean to boost the signal which is in air
 

cable tv signal booster circuit

IanP said:
Boosting signal in cable TV can be done in the same way as boosting signal from antennas: you need a low-noise, 44-880MHz and at least 15dB gain amplifier ..
Here is one example:
https://www.electronics-lab.com/projects/rf/003/index.html

Regards,
IanP
That is wideband amplifier for TV antenna. If you feed cable TV signal into that one, you will get one big NOTHING because you will overload the amplifier.

Added after 3 minutes:

ehsanelahimirza said:
hamdard said:
you must check the signal level and the matcing impedence too.
if not necessary, do not use BALUN.
YOU MAY USE NORMAL AMPLIFIER CKT. DEPENDING ON FREQUENCY OF OPERATION.

these r the things i m asking my friends(u people) including circuit

1st one i think would be good enough but if i want to boost signal at receving point
i mean to boost the signal which is in air
Then you can use schematic from that link few messages up. But the amplifier must be connected as close as possible to the receiving antenna. If you need to amplify cable TV signal in order to feed two TV sets in your home then you need different amplifier, like that Philips one.
 
Last edited by a moderator:

bad tv signal level example

I used a 10db amplifier to boast our cable tv but its marginal and sometimes have bad receive quality.I suspect due to vhf radio nearby.By anychance you know any filter to put it in?
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top