Hi all
I was wondering if directly connecting two wireless cards would burn
them. The point is not the power sent by the two cards, but if the
impedance is not the right one.
Indeed in the normal use with the antenna the impedance is not the
same of using a direct cable from one card to
General List
Subject: [WISPA] (DIRECTLY) Connecting two wireless with a RF cable
Hi all
I was wondering if directly connecting two wireless cards would burn
them. The point is not the power sent by the two cards, but if the
impedance is not the right one.
Indeed in the normal use with the antenna
It should all be 50 ohms, but you would need a big attenuator inline.
Cameron
On Mon, Aug 30, 2010 at 3:50 PM, Paolo Di Francesco
paolo.difrance...@teleinform.com wrote:
Hi all
I was wondering if directly connecting two wireless cards would burn
them. The point is not the power sent by the
The receiver impedance should match the cable impedance (50 ohms) for best
receiver performance which the manufacturers are all trying to get.
Also if the cable has enough attenuation to not burn up the receiver at the far
end then even if there is a mismatch at the receiver on the far end the
...@wispa.org] On
Behalf Of Paolo Di Francesco
Sent: Monday, August 30, 2010 1:51 PM
To: WISPA General List
Subject: [WISPA] (DIRECTLY) Connecting two wireless with a RF cable
Hi all
I was wondering if directly connecting two wireless cards would burn
them. The point is not the power sent
It should all be 50 ohms, but you would need a big attenuator inline.
so, there should not be a impedance problem, right?
a big attenuator...hum...what about a loong cable? ;)
Bye
--
Ing. Paolo Di Francesco
Teleinform s.r.l.
Sede Legale: Via Francesco Paolo Di Blasi 1, 90144 Palermo
, 2010 2:04 PM
To: WISPA General List
Subject: Re: [WISPA] (DIRECTLY) Connecting two wireless with a RF cable
well, why not? :)
I don't know if the attenuator would change the impedance story.
Why would you do that?
for bench testing I could see using a section of Coax with an attenuator
We use the UNAT-30+ from Mini-Circuits (usually 3 stacked together) to
test bad radios that come back, or for PtPs before we send them out.
It has been helpful for tuning/benchmarking MikroTik wirelsss settings
in a closed environment.
Subject: Re: [WISPA] (DIRECTLY) Connecting two wireless with a RF cable
well, why not? :)
I don't know if the attenuator would change the impedance story.
Why would you do that?
for bench testing I could see using a section of Coax with an attenuator
inline.
- Jerry
-Original
On 08/30/2010 06:39 PM, Paolo Di Francesco wrote:
well, just using the usual things for non usual situations.
I was considering: if I have to do more than 100 meters ethernet what
would I use? well 100m of LMR400 can be a solution in some cases (yeah I
know fiber, but as I said I was
arcnet, dude...
- Original Message -
From: Leon D. Zetekoff wa4...@backwoodswireless.net
To: wireless@wispa.org
Sent: Monday, August 30, 2010 4:27 PM
Subject: Re: [WISPA] (DIRECTLY) Connecting two wireless with a RF cable
On 08/30/2010 06:39 PM, Paolo Di Francesco wrote:
well, just
To: WISPA General List
Subject: Re: [WISPA] (DIRECTLY) Connecting two wireless with a RF cable
well, just using the usual things for non usual situations.
I was considering: if I have to do more than 100 meters ethernet what
would I use? well 100m of LMR400 can be a solution in some cases (yeah I
, August 30, 2010 3:40 PM
To: WISPA General List
Subject: Re: [WISPA] (DIRECTLY) Connecting two wireless with a RF cable
well, just using the usual things for non usual situations.
I was considering: if I have to do more than 100 meters ethernet what
would I use? well 100m of LMR400 can
To: WISPA General List
Subject: Re: [WISPA] (DIRECTLY) Connecting two wireless with a RF cable
OK, now I get what you are after.
75ohm cable will cause an impedance mismatch resulting is much higher
losses
that 50 ohm cable of the same length. You can add a transformer that will
match 50 Ohm
Sent: Monday, August 30, 2010 8:11 PM
To: WISPA General List
Subject: Re: [WISPA] (DIRECTLY) Connecting two wireless with a RF cable
Well the fun starts with 2 cables and mimo cards, meaning more than
100Mbits at distances much higher than 100m.
In theory it's 300Mbps halfduplex , but I guess it's
] (DIRECTLY) Connecting two wireless with a RF cable
On 08/30/2010 06:39 PM, Paolo Di Francesco wrote:
well, just using the usual things for non usual situations.
I was considering: if I have to do more than 100 meters ethernet what
would I use? well 100m of LMR400 can be a solution in some cases
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