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amplifiers - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


 Post subject: amplifiers
Posted: Sat Apr 29, 2006 10:13 am 
 
Captain

Joined: Wed Nov 02, 2005 1:50 pm
Posts: 11
Please excuse a novice's timid hand raised in the back row, but...

Ive got an accumulation of television stuff in the workshop and got to wondering if any of the various video signal amplifiers can be used for 2.4ghz? I seem unable to find any specs on them. I'm hoping they might have anywhere between 200 and 500ma power. They have low voltage wall adapters and I could replace the coax connections with rp-sma.

I have seen 500ma signal amps on the net, but for 120.00 I thought that I might just experiment with the ones I have to see if they are of any use at all. Can I do any real damage by trying? Is it certainly a waste of time? Is the freq range of these devices absolutely fixed? Or is this range something that can be tinkered with given the basic components inside?

Thanks for any advice.


 
   
 
 Post subject: Post-Script...
Posted: Sat Apr 29, 2006 10:23 am 
 
Captain

Joined: Wed Nov 02, 2005 1:50 pm
Posts: 11
Given the option of replacing a 2dbi omni antenna with a 7dbi omni antenna on a wireless router, or putting a small -let's say 250ma- "booster" between the existing antenna and the router, which is preferable? For the sake of argument, if after the math is done, (I have not done it), we've gained exactly the same dbi with the amp as would have been gained using a bigger antenna, is there any difference between these improvements?


 
   
 
 Post subject: answer
Posted: Sat Apr 29, 2006 3:18 pm 
 
Captain

Joined: Wed Nov 02, 2005 1:50 pm
Posts: 11
a little more searching may have answered my question. the amp needs to be bi-directional for wlan xmit/receive. tv/video boosters are not, apparantly. but would not many newer versions be bi-directional since so much media is becoming interactive?



Posted  11/12/2012
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