There aren't two independent transmitters in a dual stream MIMO radio,
just one. So the RF output power is divided and thus out of phase.
That's how my pea brain understands it anyway.
On 11/22/2016 4:49 PM, Adam Moffett wrote:
...I'm not saying I understand it by the way. Just saying I have no
reason to disbelieve it. If in doubt, turn your SM 45 degrees and see
if your signal changes.
------ Original Message ------
From: "Jaime Solorza" <losguyswirel...@gmail.com
<mailto:losguyswirel...@gmail.com>>
To: "Animal Farm" <af@afmug.com <mailto:af@afmug.com>>
Sent: 11/22/2016 5:45:38 PM
Subject: Re: [AFMUG] EPMP 2.4 antenna options
So how does the connector distinguish between these antennas and
relay information to chip set to "phase differently"? I am assuming
these antennas are passive with no smarts.
On Nov 22, 2016 3:42 PM, "George Skorup" <geo...@cbcast.com
<mailto:geo...@cbcast.com>> wrote:
Phase. Yes, it's built into the chipset. 450 does it too. At
least the 3.65.
On 11/22/2016 4:34 PM, ch...@wbmfg.com <mailto:ch...@wbmfg.com>
wrote:
I think so...
-----Original Message----- From: Nate Burke Sent: Tuesday,
November 22, 2016 3:29 PM To: af@afmug.com
<mailto:af@afmug.com> Subject: Re: [AFMUG] EPMP 2.4 antenna
options
So if you were to use like a v/h UBNT antenna instead of the
Dual Slant antenna, They both should work? Wondering what
the 3x price difference between antennas gains you.
On 11/22/2016 4:26 PM, ch...@wbmfg.com
<mailto:ch...@wbmfg.com> wrote:
Supposedly it makes up for the loss by using the desired
signal component from both antennas.
I remember reading the original white paper, and I
remember thinking I understood it for about 5 minutes or so.
-----Original Message----- From: Nate Burke
Sent: Tuesday, November 22, 2016 3:24 PM
To: af@afmug.com <mailto:af@afmug.com>
Subject: Re: [AFMUG] EPMP 2.4 antenna options
So you have a Dual slant AP and a V/H SM? Isn't that
just losing signal
for no reason?
On 11/22/2016 4:21 PM, Adam Moffett wrote:
They've apparently got some electronic magic that can
take the received signal on V/H and calculate what
the transmitted dual slant signal was. It's been
explained here, but I don't remember the details.
They assert that you can mix and match safely. In
fact they started out selling slant pol sector
antennas and V+H SM's, so they are/were confident
enough in this to make it the "default" setup.
It's a feature of their 802.11n chipset, so the
computation is done in hardware.
------ Original Message ------
From: "Nate Burke" <n...@blastcomm.com
<mailto:n...@blastcomm.com>>
To: "Animal Farm" <af@afmug.com <mailto:af@afmug.com>>
Sent: 11/22/2016 5:14:04 PM
Subject: [AFMUG] EPMP 2.4 antenna options
I'm looking at the Cambium 2.4 antenna
C024900D004A, and it lists it as being DualSlant
+/-45 degrees. Does this mean that the Force 200
2.4 radios are also Dual Slant to talk to this
antenna? I didn't find anything on the Force200
spec sheet talking about slant. If you use a V/H
Antenna as the AP, can you not use the Force 200
as the SM?
