Re: [WISPA] MikroTik 5.8GHz Radio cards and settings.

2006-02-10 Thread Blair Davis




Tom,

The first batch of SR5 cards had a problem with their mmxc port.  Low
or no output when selected.  The u.fl port was said to be ok.

If you don't mind, why would you use amps with a 400mW radio card?  I'd
expect you to be overloading the input on the amps and making all kinds
of noise

Tom DeReggi wrote:

  
  
  
  
  What exactly is the old mmcx
problem? I had some original batch Range2's (or is that range 3s, the
2,4Ghz G ones) that were giving me sparatic performance at a site, used
with RfLink Amps, and the mmcx port.
   
  Tom DeReggi
RapidDSL  Wireless, Inc
IntAirNet- Fixed Wireless Broadband
   
   
  
-
Original Message - 
From:
Blair
Davis 
To:
[EMAIL PROTECTED]

Cc:
'WISPA
General List' 
Sent:
Thursday, February 09, 2006 3:04 PM
Subject:
Re: [WISPA] MikroTik 5.8GHz Radio cards and settings.


I was/am aware of the mmcx issue and all tests were done with the same
u.fl pigtails on each end.  When the radio cards were changed, the same
u.fl pigtails were used.  Only the radio cards were changed.

They were the older SR5 cards with the mmcx problem.  (proven by
testing!!)  The mmcx port was down 6db from the u.fl port.

[EMAIL PROTECTED]
wrote:

  What pigtails and connectors? Mmcx on the SR5 or u.fl? are these new SR5's or
older sr'5s?

  
  
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf
Of Blair Davis
Sent: Thursday, February 09, 2006 2:08 PM
To: WISPA General List
Subject: [WISPA] MikroTik 5.8GHz Radio cards and settings.

Hey all:

I'm getting some odd results here with a PtP 5.8GHz link using MikroTik
that I setup to test with.  Let me describe the setup...

The link is 7.9 miles with clear LoS and clear Frenel zone.  Each end
has a 27db grid with a 3ft LMR-400 jumper to the MikroTik radio.

Using the link calculator at
http://www.zytrax.com/tech/wireless/calc.htm I get a predicted rx of
-60.8db at each end with CM9 radio cards (17db output).  Using the SR5
cards, (400mW), I get a predicted rx of -51.8

On to the real world results  (all reading taken from the MikroTik's
winbox.  I am using version 2.9.11 on RouterBoard 230's)

With the CM9 cards, I get a measured rx of -62db, well within the margin
of error.  An interesting note here is that I must set the CM9's output
power in the MikroTik at 30db to get these results..  I know that the
MikroTik must be doing something odd with this setting, as the CM9 can
not put out 30db.  Reducing the setting drops the rx strenth by a like
amount.  This link is stable and will pass 30Mb/sec in UDP and 22Mb/sec
in TCP mode

With the SR5 cards, I get a measured rx of -66db, well outside the
margin of error and 15db below the expected rx strength!  An interesting
note here is that I must set the SR5's output power in the MikroTik at
30db to get these results.  I know that the MikroTik must be doing
something odd with this setting, as the SR5 should not put out 30db.
Reducing the setting drops the rx strength by a like amount.  This link
is stable and will pass 24Mb/sec in UDP and 16Mb/sec in TCP mode.

Nothing else is changed when I swap the SR5's for the CM9's or back
again.  I use the same antennas, cables, boards and pigtails.  The
antennas and cables are not moved between tests. (except for moving the
pigtail from one card to the other).

Can anyone tell me what I am doing wrong here?  Or do I just have some
bad SR5 cards?  Or is the tx power setting in the MikroTik flakey?  Or
is the tx power setting relative db not absolute db?

BTW, I will be changing one end to a sector and wish to use the SR5
cards then.  Otherwise I'd be happy with the -62 on the CM9's

Thanks in advance.

--
Blair Davis

AOL IM Screen Name --  Theory240

West Michigan Wireless ISP
269-686-8648

A division of:
Camp Communication Services, INC

--
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/


--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 02/08/2006


  
  
  



-- 
Blair Davis

AOL IM Screen Name --  Theory240

West Michigan Wireless ISP
269-686-8648

A division of:
Camp Communication Services, INC

 
 -- 
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/
  
  

No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.5/256 - Release Date: 2/10/2006
  



-- 
Blair Davis

AOL IM Screen Name --  Theory240

West Michigan Wireless ISP
269-686-8648

A division of:
Camp Communication Services, INC



-- 
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Re: [WISPA] MikroTik 5.8GHz Radio cards and settings.

2006-02-10 Thread Tom DeReggi



OOPs, I'm writing quicker than I'm thinking, and 
getting myself confused. I'm not using the Amp with the Range 2.

The subscriber side had a Range2 (400watt). The AP 
side had a CM9 with Rflinx 250WAmp (802.11G model).

Some weird things had happened, like I had an 
antenna and amp plugged on one of the ports, and not the other, and when I 
changed antennas inStar OS, I only got a db or two difference in signal 
strength. Swapped all the gear and caleshad same results. Changed 
channels, and problems went a way. It was one of those days that broke all laws 
of science and just didn't add up.We also tried changing ports on SU 
sideat stages during the tests, which is why I asked the question 
regarding the Range2s. Its was a site from hell. I started the job out 
with 13db radios, as itappeared to be a LOS installation, with some 
possible Freznel zone blockage. But unfortuneately they were pine trees. 
We got them working, but lots of reliabilty issues. We are actually converting 
some of it to 900Mhz next week, and swapping to a 180 deg Sector antenna at AP 
instead of the Omni. Its a farm with no one else around for 5-10 square miles. 
But therewas more noise than expected. The High power was needed to get 
past all the Almost-LOS issues with Trees.When we go back, we are swapping 
all the pigtails with another brand just for confirmation. Its just helpful to 
go back with known facts regarding what to expect from the Range cards, and make 
sure we use the optimal port.

Tom DeReggiRapidDSL  Wireless, IncIntAirNet- Fixed Wireless 
Broadband



  - Original Message - 
  From: 
  Blair Davis 

  To: WISPA General List 
  Sent: Friday, February 10, 2006 9:49 
  AM
  Subject: Re: [WISPA] MikroTik 5.8GHz 
  Radio cards and settings.
  Tom,The first batch of SR5 cards had a problem with 
  their mmxc port. Low or no output when selected. The u.fl port was 
  said to be ok.If you don't mind, why would you use amps with a 400mW 
  radio card? I'd expect you to be overloading the input on the amps and 
  making all kinds of noiseTom DeReggi wrote: 
  



What exactly is the old mmcx problem? I had 
some original batch Range2's (or is that range 3s, the 2,4Ghz G 
ones)that were giving me sparatic performance at a site, used with 
RfLink Amps, and the mmcx port.

Tom DeReggiRapidDSL  Wireless, IncIntAirNet- Fixed 
Wireless Broadband



  - 
  Original Message - 
  From: 
  Blair Davis 
  
  To: 
  [EMAIL PROTECTED] 
  Cc: 
  'WISPA 
  General List' 
  Sent: 
  Thursday, February 09, 2006 3:04 PM
  Subject: 
  Re: [WISPA] MikroTik 5.8GHz Radio cards and settings.
  I was/am aware of the mmcx issue and all tests were done 
  with the same u.fl pigtails on each end. When the radio cards were 
  changed, the same u.fl pigtails were used. Only the radio cards were 
  changed.They were the older SR5 cards with the mmcx problem. 
  (proven by testing!!) The mmcx port was down 6db from the u.fl 
  port.[EMAIL PROTECTED] wrote:
  What pigtails and connectors? Mmcx on the SR5 or u.fl? are these new SR5's or
older sr'5s?

  
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf
Of Blair Davis
Sent: Thursday, February 09, 2006 2:08 PM
To: WISPA General List
Subject: [WISPA] MikroTik 5.8GHz Radio cards and settings.

Hey all:

I'm getting some odd results here with a PtP 5.8GHz link using MikroTik
that I setup to test with.  Let me describe the setup...

The link is 7.9 miles with clear LoS and clear Frenel zone.  Each end
has a 27db grid with a 3ft LMR-400 jumper to the MikroTik radio.

Using the link calculator at
http://www.zytrax.com/tech/wireless/calc.htm I get a predicted rx of
-60.8db at each end with CM9 radio cards (17db output).  Using the SR5
cards, (400mW), I get a predicted rx of -51.8

On to the real world results  (all reading taken from the MikroTik's
winbox.  I am using version 2.9.11 on RouterBoard 230's)

With the CM9 cards, I get a measured rx of -62db, well within the margin
of error.  An interesting note here is that I must set the CM9's output
power in the MikroTik at 30db to get these results..  I know that the
MikroTik must be doing something odd with this setting, as the CM9 can
not put out 30db.  Reducing the setting drops the rx strenth by a like
amount.  This link is stable and will pass 30Mb/sec in UDP and 22Mb/sec
in TCP mode

With the SR5 cards, I get a measured rx of -66db, well outside the
margin of error and 15db below the expected rx strength!  An interesting
note here is that I must set the SR5's output power in the MikroTik at
30db to get these results.  I know that the MikroTik must be doing
something odd with this setting, as the SR5 should not put out 30db.
Reducing the setting drops the rx strength by a like amount.  This link
is stable and will pass 24Mb/sec in UDP and 16Mb/sec in TCP

RE: [WISPA] MikroTik 5.8GHz Radio cards and settings.

2006-02-09 Thread danlist
What pigtails and connectors? Mmcx on the SR5 or u.fl? are these new SR5's or
older sr'5s?

 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
 Of Blair Davis
 Sent: Thursday, February 09, 2006 2:08 PM
 To: WISPA General List
 Subject: [WISPA] MikroTik 5.8GHz Radio cards and settings.
 
 Hey all:
 
 I'm getting some odd results here with a PtP 5.8GHz link using MikroTik
 that I setup to test with.  Let me describe the setup...
 
 The link is 7.9 miles with clear LoS and clear Frenel zone.  Each end
 has a 27db grid with a 3ft LMR-400 jumper to the MikroTik radio.
 
 Using the link calculator at
 http://www.zytrax.com/tech/wireless/calc.htm I get a predicted rx of
 -60.8db at each end with CM9 radio cards (17db output).  Using the SR5
 cards, (400mW), I get a predicted rx of -51.8
 
 On to the real world results  (all reading taken from the MikroTik's
 winbox.  I am using version 2.9.11 on RouterBoard 230's)
 
 With the CM9 cards, I get a measured rx of -62db, well within the margin
 of error.  An interesting note here is that I must set the CM9's output
 power in the MikroTik at 30db to get these results..  I know that the
 MikroTik must be doing something odd with this setting, as the CM9 can
 not put out 30db.  Reducing the setting drops the rx strenth by a like
 amount.  This link is stable and will pass 30Mb/sec in UDP and 22Mb/sec
 in TCP mode
 
 With the SR5 cards, I get a measured rx of -66db, well outside the
 margin of error and 15db below the expected rx strength!  An interesting
 note here is that I must set the SR5's output power in the MikroTik at
 30db to get these results.  I know that the MikroTik must be doing
 something odd with this setting, as the SR5 should not put out 30db.
 Reducing the setting drops the rx strength by a like amount.  This link
 is stable and will pass 24Mb/sec in UDP and 16Mb/sec in TCP mode.
 
 Nothing else is changed when I swap the SR5's for the CM9's or back
 again.  I use the same antennas, cables, boards and pigtails.  The
 antennas and cables are not moved between tests. (except for moving the
 pigtail from one card to the other).
 
 Can anyone tell me what I am doing wrong here?  Or do I just have some
 bad SR5 cards?  Or is the tx power setting in the MikroTik flakey?  Or
 is the tx power setting relative db not absolute db?
 
 BTW, I will be changing one end to a sector and wish to use the SR5
 cards then.  Otherwise I'd be happy with the -62 on the CM9's
 
 Thanks in advance.
 
 --
 Blair Davis
 
 AOL IM Screen Name --  Theory240
 
 West Michigan Wireless ISP
 269-686-8648
 
 A division of:
 Camp Communication Services, INC
 
 --
 WISPA Wireless List: wireless@wispa.org
 
 Subscribe/Unsubscribe:
 http://lists.wispa.org/mailman/listinfo/wireless
 
 Archives: http://lists.wispa.org/pipermail/wireless/
 
 
 --
 No virus found in this incoming message.
 Checked by AVG Free Edition.
 Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 02/08/2006
 

-- 
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 02/08/2006
 

-- 
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/


Re: [WISPA] MikroTik 5.8GHz Radio cards and settings.

2006-02-09 Thread Julius Igugu
Upgrade to 2.9.12.   It has better wireless performance.  Chech the mikrotik 
forums.
- Original Message - 
From: Blair Davis [EMAIL PROTECTED]

To: WISPA General List wireless@wispa.org
Sent: Thursday, February 09, 2006 8:07 PM
Subject: [WISPA] MikroTik 5.8GHz Radio cards and settings.



Hey all:

I'm getting some odd results here with a PtP 5.8GHz link using MikroTik 
that I setup to test with.  Let me describe the setup...


The link is 7.9 miles with clear LoS and clear Frenel zone.  Each end has 
a 27db grid with a 3ft LMR-400 jumper to the MikroTik radio.
Using the link calculator at http://www.zytrax.com/tech/wireless/calc.htm 
I get a predicted rx of -60.8db at each end with CM9 radio cards (17db 
output).  Using the SR5 cards, (400mW), I get a predicted rx of -51.8


On to the real world results  (all reading taken from the MikroTik's 
winbox.  I am using version 2.9.11 on RouterBoard 230's)


With the CM9 cards, I get a measured rx of -62db, well within the margin 
of error.  An interesting note here is that I must set the CM9's output 
power in the MikroTik at 30db to get these results..  I know that the 
MikroTik must be doing something odd with this setting, as the CM9 can not 
put out 30db.  Reducing the setting drops the rx strenth by a like amount. 
This link is stable and will pass 30Mb/sec in UDP and 22Mb/sec in TCP mode


With the SR5 cards, I get a measured rx of -66db, well outside the margin 
of error and 15db below the expected rx strength!  An interesting note 
here is that I must set the SR5's output power in the MikroTik at 30db to 
get these results.  I know that the MikroTik must be doing something odd 
with this setting, as the SR5 should not put out 30db.  Reducing the 
setting drops the rx strength by a like amount.  This link is stable and 
will pass 24Mb/sec in UDP and 16Mb/sec in TCP mode.


Nothing else is changed when I swap the SR5's for the CM9's or back again. 
I use the same antennas, cables, boards and pigtails.  The antennas and 
cables are not moved between tests. (except for moving the pigtail from 
one card to the other).


Can anyone tell me what I am doing wrong here?  Or do I just have some bad 
SR5 cards?  Or is the tx power setting in the MikroTik flakey?  Or is the 
tx power setting relative db not absolute db?


BTW, I will be changing one end to a sector and wish to use the SR5 cards 
then.  Otherwise I'd be happy with the -62 on the CM9's


Thanks in advance.

--
Blair Davis

AOL IM Screen Name --  Theory240

West Michigan Wireless ISP
269-686-8648

A division of:
Camp Communication Services, INC

--
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/




--
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/


Re: [WISPA] MikroTik 5.8GHz Radio cards and settings.

2006-02-09 Thread Blair Davis




I was/am aware of the mmcx issue and all tests were done with the same
u.fl pigtails on each end.  When the radio cards were changed, the same
u.fl pigtails were used.  Only the radio cards were changed.

They were the older SR5 cards with the mmcx problem.  (proven by
testing!!)  The mmcx port was down 6db from the u.fl port.

[EMAIL PROTECTED] wrote:

  What pigtails and connectors? Mmcx on the SR5 or u.fl? are these new SR5's or
older sr'5s?

  
  
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf
Of Blair Davis
Sent: Thursday, February 09, 2006 2:08 PM
To: WISPA General List
Subject: [WISPA] MikroTik 5.8GHz Radio cards and settings.

Hey all:

I'm getting some odd results here with a PtP 5.8GHz link using MikroTik
that I setup to test with.  Let me describe the setup...

The link is 7.9 miles with clear LoS and clear Frenel zone.  Each end
has a 27db grid with a 3ft LMR-400 jumper to the MikroTik radio.

Using the link calculator at
http://www.zytrax.com/tech/wireless/calc.htm I get a predicted rx of
-60.8db at each end with CM9 radio cards (17db output).  Using the SR5
cards, (400mW), I get a predicted rx of -51.8

On to the real world results  (all reading taken from the MikroTik's
winbox.  I am using version 2.9.11 on RouterBoard 230's)

With the CM9 cards, I get a measured rx of -62db, well within the margin
of error.  An interesting note here is that I must set the CM9's output
power in the MikroTik at 30db to get these results..  I know that the
MikroTik must be doing something odd with this setting, as the CM9 can
not put out 30db.  Reducing the setting drops the rx strenth by a like
amount.  This link is stable and will pass 30Mb/sec in UDP and 22Mb/sec
in TCP mode

With the SR5 cards, I get a measured rx of -66db, well outside the
margin of error and 15db below the expected rx strength!  An interesting
note here is that I must set the SR5's output power in the MikroTik at
30db to get these results.  I know that the MikroTik must be doing
something odd with this setting, as the SR5 should not put out 30db.
Reducing the setting drops the rx strength by a like amount.  This link
is stable and will pass 24Mb/sec in UDP and 16Mb/sec in TCP mode.

Nothing else is changed when I swap the SR5's for the CM9's or back
again.  I use the same antennas, cables, boards and pigtails.  The
antennas and cables are not moved between tests. (except for moving the
pigtail from one card to the other).

Can anyone tell me what I am doing wrong here?  Or do I just have some
bad SR5 cards?  Or is the tx power setting in the MikroTik flakey?  Or
is the tx power setting relative db not absolute db?

BTW, I will be changing one end to a sector and wish to use the SR5
cards then.  Otherwise I'd be happy with the -62 on the CM9's

Thanks in advance.

--
Blair Davis

AOL IM Screen Name --  Theory240

West Michigan Wireless ISP
269-686-8648

A division of:
Camp Communication Services, INC

--
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/


--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 02/08/2006


  
  
  



-- 
Blair Davis

AOL IM Screen Name --  Theory240

West Michigan Wireless ISP
269-686-8648

A division of:
Camp Communication Services, INC



-- 
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/


Re: [WISPA] MikroTik 5.8GHz Radio cards and settings.

2006-02-09 Thread Blair Davis

Thank you.

Performance is not the issue here.  The issue is predicted signal 
strength vs measured signal strength.  The link works and works well.  
Thruput and latency are well within expected ranges.  I am just getting 
numbers that don't make sense.  Like the high power SR5 cards having a 
lower output that the low power CM9 cards.


Before I proceed with my planned deployment, I want to understand my 
test readings.


Julius Igugu wrote:

Upgrade to 2.9.12.   It has better wireless performance.  Chech the 
mikrotik forums.

- Original Message - From: Blair Davis [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Thursday, February 09, 2006 8:07 PM
Subject: [WISPA] MikroTik 5.8GHz Radio cards and settings.



Hey all:

I'm getting some odd results here with a PtP 5.8GHz link using 
MikroTik that I setup to test with.  Let me describe the setup...


The link is 7.9 miles with clear LoS and clear Frenel zone.  Each end 
has a 27db grid with a 3ft LMR-400 jumper to the MikroTik radio.
Using the link calculator at 
http://www.zytrax.com/tech/wireless/calc.htm I get a predicted rx of 
-60.8db at each end with CM9 radio cards (17db output).  Using the 
SR5 cards, (400mW), I get a predicted rx of -51.8


On to the real world results  (all reading taken from the 
MikroTik's winbox.  I am using version 2.9.11 on RouterBoard 230's)


With the CM9 cards, I get a measured rx of -62db, well within the 
margin of error.  An interesting note here is that I must set the 
CM9's output power in the MikroTik at 30db to get these results..  I 
know that the MikroTik must be doing something odd with this setting, 
as the CM9 can not put out 30db.  Reducing the setting drops the rx 
strenth by a like amount. This link is stable and will pass 30Mb/sec 
in UDP and 22Mb/sec in TCP mode


With the SR5 cards, I get a measured rx of -66db, well outside the 
margin of error and 15db below the expected rx strength!  An 
interesting note here is that I must set the SR5's output power in 
the MikroTik at 30db to get these results.  I know that the MikroTik 
must be doing something odd with this setting, as the SR5 should not 
put out 30db.  Reducing the setting drops the rx strength by a like 
amount.  This link is stable and will pass 24Mb/sec in UDP and 
16Mb/sec in TCP mode.


Nothing else is changed when I swap the SR5's for the CM9's or back 
again. I use the same antennas, cables, boards and pigtails.  The 
antennas and cables are not moved between tests. (except for moving 
the pigtail from one card to the other).


Can anyone tell me what I am doing wrong here?  Or do I just have 
some bad SR5 cards?  Or is the tx power setting in the MikroTik 
flakey?  Or is the tx power setting relative db not absolute db?


BTW, I will be changing one end to a sector and wish to use the SR5 
cards then.  Otherwise I'd be happy with the -62 on the CM9's


Thanks in advance.

--
Blair Davis

AOL IM Screen Name --  Theory240

West Michigan Wireless ISP
269-686-8648

A division of:
Camp Communication Services, INC

--
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/










--
Blair Davis

AOL IM Screen Name --  Theory240

West Michigan Wireless ISP
269-686-8648

A division of:
Camp Communication Services, INC

--
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/


Re: [WISPA] MikroTik 5.8GHz Radio cards and settings.

2006-02-09 Thread Scott Reed




Seems to me there are posts that the MT setting values do not equate to dB.  Maybe on P15's MT maillist.

Scott Reed 


Owner 


NewWays 


Wireless Networking 


Network Design, Installation and Administration 


www.nwwnet.net 




-- Original Message 
---

From: Blair Davis [EMAIL PROTECTED] 


To: WISPA General List wireless@wispa.org 


Sent: Thu, 09 Feb 2006 14:07:46 -0500 


Subject: [WISPA] MikroTik 5.8GHz Radio cards and settings. 



 Hey all: 
 
 

I'm getting some odd results here with a PtP 5.8GHz link using MikroTik  

 

that I setup to test with.  Let me describe the setup... 
 
 

The link is 7.9 miles with clear LoS and clear Frenel zone.  Each end  

 

has a 27db grid with a 3ft LMR-400 jumper to the MikroTik radio.  
 

 

Using the link calculator at  
 

http://www.zytrax.com/tech/wireless/calc.htm I get a 
predicted rx of  
 

-60.8db at each end with CM9 radio cards (17db output).  Using the SR5  

 

cards, (400mW), I get a predicted rx of -51.8 
 
 

On to the real world results  (all reading taken from the MikroTik's  

 

winbox.  I am using version 2.9.11 on RouterBoard 230's) 
 
 

With the CM9 cards, I get a measured rx of -62db, well within the margin  

 

of error.  An interesting note here is that I must set the CM9's output  

 

power in the MikroTik at 30db to get these results..  I know that the  

 

MikroTik must be doing something odd with this setting, as the CM9 can  
 

not put out 30db.  Reducing the setting drops the rx strenth by a like  

 

amount.  This link is stable and will pass 30Mb/sec in UDP and 22Mb/sec  

 

in TCP mode 
 
 

With the SR5 cards, I get a measured rx of -66db, well outside the  
 

margin of error and 15db below the expected rx strength!  An interesting  

 

note here is that I must set the SR5's output power in the MikroTik at  
 

30db to get these results.  I know that the MikroTik must be doing  

 

something odd with this setting, as the SR5 should not put out 30db.   

 

Reducing the setting drops the rx strength by a like amount.  This link  

 

is stable and will pass 24Mb/sec in UDP and 16Mb/sec in TCP mode. 
 

 

Nothing else is changed when I swap the SR5's for the CM9's or back  
 

again.  I use the same antennas, cables, boards and pigtails.  The  

 

antennas and cables are not moved between tests. (except for moving the  

 

pigtail from one card to the other). 
 
 

Can anyone tell me what I am doing wrong here?  Or do I just have some  

 

bad SR5 cards?  Or is the tx power setting in the MikroTik flakey?  Or 
 
 

is the tx power setting relative db not absolute db? 
 
 

BTW, I will be changing one end to a sector and wish to use the SR5  
 

cards then.  Otherwise I'd be happy with the -62 on the CM9's 
 

 

Thanks in advance. 
 
 

--  
 

Blair Davis 
 
 

AOL IM Screen Name --  Theory240 
 
 

West Michigan Wireless ISP 
 

269-686-8648 
 
 

A division of: 
 

Camp Communication Services, INC 
 
 

--  
 

WISPA Wireless List: wireless@wispa.org 
 
 

Subscribe/Unsubscribe: 
 

http://lists.wispa.org/mailman/listinfo/wireless 
 

 

Archives: http://lists.wispa.org/pipermail/wireless/ 
--- 
End of Original Message 
---






-- 
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/


Re: [WISPA] MikroTik 5.8GHz Radio cards and settings.

2006-02-09 Thread Blair Davis




That makes sense as an explanation for the CM9 issue. Thanks...

Doesn't explain the low output on the SR5 cards

Scott Reed wrote:

  
  
  Seems to me there are posts that the MT setting values
do not equate to dB. Maybe on P15's MT maillist.
  
  
Scott Reed 
Owner 
NewWays 
Wireless Networking 
Network Design, Installation and Administration 
  www.nwwnet.net 
  
  
  -- Original Message ---
  
From: Blair Davis [EMAIL PROTECTED] 
To: WISPA General List wireless@wispa.org 
Sent: Thu, 09 Feb 2006 14:07:46 -0500 
Subject: [WISPA] MikroTik 5.8GHz Radio cards and settings. 
  
 Hey all: 
 
 I'm getting some odd results here with a PtP 5.8GHz link using
MikroTik 
 that I setup to test with. Let me describe the setup... 
 
 The link is 7.9 miles with clear LoS and clear Frenel zone. Each
end 
 has a 27db grid with a 3ft LMR-400 jumper to the MikroTik radio. 
 
 Using the link calculator at 
 http://www.zytrax.com/tech/wireless/calc.htm
I get a predicted rx of 
 -60.8db at each end with CM9 radio cards (17db output). Using the
SR5 
 cards, (400mW), I get a predicted rx of -51.8 
 
 On to the real world results (all reading taken from the
MikroTik's 
 winbox. I am using version 2.9.11 on RouterBoard 230's) 
 
 With the CM9 cards, I get a measured rx of -62db, well within the
margin 
 of error. An interesting note here is that I must set the CM9's
output 
 power in the MikroTik at 30db to get these results.. I know that
the 
 MikroTik must be doing something odd with this setting, as the CM9
can 
 not put out 30db. Reducing the setting drops the rx strenth by a
like 
 amount. This link is stable and will pass 30Mb/sec in UDP and
22Mb/sec 
 in TCP mode 
 
 With the SR5 cards, I get a measured rx of -66db, well outside the
  
 margin of error and 15db below the expected rx strength! An
interesting 
 note here is that I must set the SR5's output power in the
MikroTik at 
 30db to get these results. I know that the MikroTik must be doing
  
 something odd with this setting, as the SR5 should not put out
30db.  
 Reducing the setting drops the rx strength by a like amount. This
link 
 is stable and will pass 24Mb/sec in UDP and 16Mb/sec in TCP mode. 
 
 Nothing else is changed when I swap the SR5's for the CM9's or
back 
 again. I use the same antennas, cables, boards and pigtails. The
  
 antennas and cables are not moved between tests. (except for
moving the 
 pigtail from one card to the other). 
 
 Can anyone tell me what I am doing wrong here? Or do I just have
some 
 bad SR5 cards? Or is the tx power setting in the MikroTik flakey?
Or 
 is the tx power setting relative db not absolute db? 
 
 BTW, I will be changing one end to a sector and wish to use the
SR5 
 cards then. Otherwise I'd be happy with the -62 on the CM9's 
 
 Thanks in advance. 
 
 -- 
 Blair Davis 
 
 AOL IM Screen Name -- Theory240 
 
 West Michigan Wireless ISP 
 269-686-8648 
 
 A division of: 
 Camp Communication Services, INC 
 
 -- 
 WISPA Wireless List: wireless@wispa.org 
 
 Subscribe/Unsubscribe: 
 http://lists.wispa.org/mailman/listinfo/wireless
  
 
 Archives: http://lists.wispa.org/pipermail/wireless/
  
  --- End of Original Message ---
  
  
  

No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 2/8/2006
  



-- 
Blair Davis

AOL IM Screen Name --  Theory240

West Michigan Wireless ISP
269-686-8648

A division of:
Camp Communication Services, INC



-- 
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/


RE: [WISPA] MikroTik 5.8GHz Radio cards and settings.

2006-02-09 Thread Paul Hendry








If it help, we got SR5s as soon as they
where available. When I put them in a real world environment on a StarOS/WRAP
set-up I saw no increase in signal quality on either end. Put the CM9s back in
and still no change.











From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf
Of Blair Davis
Sent: 09 February 2006 20:10
To: Scott Reed
Cc: WISPA
 General List
Subject: Re: [WISPA] MikroTik
5.8GHz Radio cards and settings.





That makes sense as an explanation for the CM9
issue. Thanks...

Doesn't explain the low output on the SR5 cards

Scott Reed wrote: 

Seems to me there are posts that the MT setting values
do not equate to dB. Maybe on P15's MT maillist. 

Scott Reed 
Owner 
NewWays 
Wireless Networking 
Network Design, Installation and Administration 
www.nwwnet.net 


-- Original Message ---

From: Blair Davis [EMAIL PROTECTED]

To: WISPA General List wireless@wispa.org 
Sent: Thu, 09 Feb 2006 14:07:46 -0500 
Subject: [WISPA] MikroTik 5.8GHz Radio cards and settings. 

 Hey all: 
 
 I'm getting some odd results here with a PtP 5.8GHz link using MikroTik 
 that I setup to test with. Let me describe the setup... 
 
 The link is 7.9 miles with clear LoS and clear Frenel zone. Each end

 has a 27db grid with a 3ft LMR-400 jumper to the MikroTik radio. 
 
 Using the link calculator at 
 http://www.zytrax.com/tech/wireless/calc.htm
I get a predicted rx of 
 -60.8db at each end with CM9 radio cards (17db output). Using the
SR5 
 cards, (400mW), I get a predicted rx of -51.8 
 
 On to the real world results (all reading taken from the
MikroTik's 
 winbox. I am using version 2.9.11 on RouterBoard 230's) 
 
 With the CM9 cards, I get a measured rx of -62db, well within the margin 
 of error. An interesting note here is that I must set the CM9's
output 
 power in the MikroTik at 30db to get these results.. I know that the

 MikroTik must be doing something odd with this setting, as the CM9 can 
 not put out 30db. Reducing the setting drops the rx strenth by a
like 
 amount. This link is stable and will pass 30Mb/sec in UDP and
22Mb/sec 
 in TCP mode 
 
 With the SR5 cards, I get a measured rx of -66db, well outside the 
 margin of error and 15db below the expected rx strength! An
interesting 
 note here is that I must set the SR5's output power in the MikroTik at 
 30db to get these results. I know that the MikroTik must be doing 
 something odd with this setting, as the SR5 should not put out 30db.
 
 Reducing the setting drops the rx strength by a like amount. This
link 
 is stable and will pass 24Mb/sec in UDP and 16Mb/sec in TCP mode. 
 
 Nothing else is changed when I swap the SR5's for the CM9's or back 
 again. I use the same antennas, cables, boards and pigtails.
The 
 antennas and cables are not moved between tests. (except for moving the 
 pigtail from one card to the other). 
 
 Can anyone tell me what I am doing wrong here? Or do I just have
some 
 bad SR5 cards? Or is the tx power setting in the MikroTik flakey?
Or 
 is the tx power setting relative db not absolute db? 
 
 BTW, I will be changing one end to a sector and wish to use the SR5 
 cards then. Otherwise I'd be happy with the -62 on the CM9's 
 
 Thanks in advance. 
 
 -- 
 Blair Davis 
 
 AOL IM Screen Name -- Theory240 
 
 West Michigan Wireless ISP 
 269-686-8648 
 
 A division of: 
 Camp Communication Services, INC 
 
 -- 
 WISPA Wireless List: wireless@wispa.org

 
 Subscribe/Unsubscribe: 
 http://lists.wispa.org/mailman/listinfo/wireless

 
 Archives: http://lists.wispa.org/pipermail/wireless/ 
--- End of Original Message ---








No virus found in this incoming message.Checked by AVG Free Edition.Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 2/8/2006 






-- Blair DavisAOL IM Screen Name -- Theory240West Michigan Wireless ISP269-686-8648A division of:Camp Communication Services, INC






--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 08/02/2006
 

  

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 08/02/2006
 
-- 
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/


RE: [WISPA] MikroTik 5.8GHz Radio cards and settings.

2006-02-09 Thread danlist








when they new improved Sr5 (the ones w/ the updated
MMCXs) I noticed a few changes in the way mikrotik behaves with them, I also
seem about a 6dbm improvement in those links as well 



Dan















From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf
Of Paul Hendry
Sent: Thursday, February 09, 2006
5:31 PM
To: 'WISPA General List'
Subject: RE: [WISPA] MikroTik
5.8GHz Radio cards and settings.





If it help, we got SR5s as soon as they where
available. When I put them in a real world environment on a StarOS/WRAP set-up
I saw no increase in signal quality on either end. Put the CM9s back in and
still no change.











From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf
Of Blair Davis
Sent: 09 February 2006 20:10
To: Scott Reed
Cc: WISPA General List
Subject: Re: [WISPA] MikroTik
5.8GHz Radio cards and settings.





That makes sense as an explanation for the CM9
issue. Thanks...

Doesn't explain the low output on the SR5 cards

Scott Reed wrote: 

Seems to me there are
posts that the MT setting values do not equate to dB. Maybe on P15's MT
maillist. 

Scott Reed 
Owner 
NewWays 
Wireless Networking 
Network Design, Installation and Administration 
www.nwwnet.net 


-- Original Message ---

From: Blair Davis [EMAIL PROTECTED]

To: WISPA General List wireless@wispa.org

Sent: Thu, 09 Feb 2006 14:07:46 -0500 
Subject: [WISPA] MikroTik 5.8GHz Radio cards and settings. 

 Hey all: 
 
 I'm getting some odd results here with a PtP 5.8GHz link using MikroTik 
 that I setup to test with. Let me describe the setup... 
 
 The link is 7.9 miles with clear LoS and clear Frenel zone. Each end

 has a 27db grid with a 3ft LMR-400 jumper to the MikroTik radio. 
 
 Using the link calculator at 
 http://www.zytrax.com/tech/wireless/calc.htm
I get a predicted rx of 
 -60.8db at each end with CM9 radio cards (17db output). Using the
SR5 
 cards, (400mW), I get a predicted rx of -51.8 
 
 On to the real world results (all reading taken from the
MikroTik's 
 winbox. I am using version 2.9.11 on RouterBoard 230's) 
 
 With the CM9 cards, I get a measured rx of -62db, well within the margin 
 of error. An interesting note here is that I must set the CM9's
output 
 power in the MikroTik at 30db to get these results.. I know that the

 MikroTik must be doing something odd with this setting, as the CM9 can 
 not put out 30db. Reducing the setting drops the rx strenth by a
like 
 amount. This link is stable and will pass 30Mb/sec in UDP and
22Mb/sec 
 in TCP mode 
 
 With the SR5 cards, I get a measured rx of -66db, well outside the 
 margin of error and 15db below the expected rx strength! An
interesting 
 note here is that I must set the SR5's output power in the MikroTik at 
 30db to get these results. I know that the MikroTik must be doing 
 something odd with this setting, as the SR5 should not put out 30db.
 
 Reducing the setting drops the rx strength by a like amount. This
link 
 is stable and will pass 24Mb/sec in UDP and 16Mb/sec in TCP mode. 
 
 Nothing else is changed when I swap the SR5's for the CM9's or back 
 again. I use the same antennas, cables, boards and pigtails.
The 
 antennas and cables are not moved between tests. (except for moving the 
 pigtail from one card to the other). 
 
 Can anyone tell me what I am doing wrong here? Or do I just have
some 
 bad SR5 cards? Or is the tx power setting in the MikroTik flakey?
Or 
 is the tx power setting relative db not absolute db? 
 
 BTW, I will be changing one end to a sector and wish to use the SR5 
 cards then. Otherwise I'd be happy with the -62 on the CM9's 
 
 Thanks in advance. 
 
 -- 
 Blair Davis 
 
 AOL IM Screen Name -- Theory240 
 
 West Michigan Wireless ISP 
 269-686-8648 
 
 A division of: 
 Camp Communication Services, INC 
 
 -- 
 WISPA Wireless List: wireless@wispa.org

 
 Subscribe/Unsubscribe: 
 http://lists.wispa.org/mailman/listinfo/wireless

 
 Archives: http://lists.wispa.org/pipermail/wireless/ 
--- End of Original Message ---






No virus found in this incoming message.Checked by AVG Free Edition.Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 2/8/2006 





-- Blair DavisAOL IM Screen Name -- Theory240West Michigan Wireless ISP269-686-8648A division of:Camp Communication Services, INC








--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 08/02/2006
 

  

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 08/02/2006
 


--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 02/08/2006
 

  

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 02/08/2006
 
-- 
WISPA Wireless List: wireless@wispa.org

Subscribe

RE: [WISPA] MikroTik 5.8GHz Radio cards and settings.

2006-02-09 Thread danlist








Under advanced status the OLDER (the original sr5
cards) report 15dbm TX Power, while the new cards report 19dbm TX Power



Also the CHIP INFO under General  is different
between the original sr5 cards and the newer SR5 cards (eeprom info)













From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf
Of Paul Hendry
Sent: Thursday, February 09, 2006
5:31 PM
To: 'WISPA General List'
Subject: RE: [WISPA] MikroTik
5.8GHz Radio cards and settings.





If it help, we got SR5s as soon as they
where available. When I put them in a real world environment on a StarOS/WRAP
set-up I saw no increase in signal quality on either end. Put the CM9s back in
and still no change.











From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf
Of Blair Davis
Sent: 09 February 2006 20:10
To: Scott Reed
Cc: WISPA General List
Subject: Re: [WISPA] MikroTik
5.8GHz Radio cards and settings.





That makes sense as an explanation for the CM9
issue. Thanks...

Doesn't explain the low output on the SR5 cards

Scott Reed wrote: 

Seems to me there are
posts that the MT setting values do not equate to dB. Maybe on P15's MT
maillist. 

Scott Reed 
Owner 
NewWays 
Wireless Networking 
Network Design, Installation and Administration 
www.nwwnet.net 


-- Original Message ---

From: Blair Davis [EMAIL PROTECTED]

To: WISPA General List wireless@wispa.org

Sent: Thu, 09 Feb 2006 14:07:46 -0500 
Subject: [WISPA] MikroTik 5.8GHz Radio cards and settings. 

 Hey all: 
 
 I'm getting some odd results here with a PtP 5.8GHz link using MikroTik 
 that I setup to test with. Let me describe the setup... 
 
 The link is 7.9 miles with clear LoS and clear Frenel zone. Each end

 has a 27db grid with a 3ft LMR-400 jumper to the MikroTik radio. 
 
 Using the link calculator at 
 http://www.zytrax.com/tech/wireless/calc.htm
I get a predicted rx of 
 -60.8db at each end with CM9 radio cards (17db output). Using the
SR5 
 cards, (400mW), I get a predicted rx of -51.8 
 
 On to the real world results (all reading taken from the
MikroTik's 
 winbox. I am using version 2.9.11 on RouterBoard 230's) 
 
 With the CM9 cards, I get a measured rx of -62db, well within the margin 
 of error. An interesting note here is that I must set the CM9's
output 
 power in the MikroTik at 30db to get these results.. I know that the

 MikroTik must be doing something odd with this setting, as the CM9 can 
 not put out 30db. Reducing the setting drops the rx strenth by a
like 
 amount. This link is stable and will pass 30Mb/sec in UDP and
22Mb/sec 
 in TCP mode 
 
 With the SR5 cards, I get a measured rx of -66db, well outside the 
 margin of error and 15db below the expected rx strength! An
interesting 
 note here is that I must set the SR5's output power in the MikroTik at 
 30db to get these results. I know that the MikroTik must be doing 
 something odd with this setting, as the SR5 should not put out 30db.
 
 Reducing the setting drops the rx strength by a like amount. This
link 
 is stable and will pass 24Mb/sec in UDP and 16Mb/sec in TCP mode. 
 
 Nothing else is changed when I swap the SR5's for the CM9's or back 
 again. I use the same antennas, cables, boards and pigtails.
The 
 antennas and cables are not moved between tests. (except for moving the 
 pigtail from one card to the other). 
 
 Can anyone tell me what I am doing wrong here? Or do I just have
some 
 bad SR5 cards? Or is the tx power setting in the MikroTik flakey?
Or 
 is the tx power setting relative db not absolute db? 
 
 BTW, I will be changing one end to a sector and wish to use the SR5 
 cards then. Otherwise I'd be happy with the -62 on the CM9's 
 
 Thanks in advance. 
 
 -- 
 Blair Davis 
 
 AOL IM Screen Name -- Theory240 
 
 West Michigan Wireless ISP 
 269-686-8648 
 
 A division of: 
 Camp Communication Services, INC 
 
 -- 
 WISPA Wireless List: wireless@wispa.org

 
 Subscribe/Unsubscribe: 
 http://lists.wispa.org/mailman/listinfo/wireless

 
 Archives: http://lists.wispa.org/pipermail/wireless/ 
--- End of Original Message ---






No virus found in this incoming message.Checked by AVG Free Edition.Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 2/8/2006 





-- Blair DavisAOL IM Screen Name -- Theory240West Michigan Wireless ISP269-686-8648A division of:Camp Communication Services, INC








--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 08/02/2006
 

  

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 08/02/2006
 


--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 02/08/2006
 

  

--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 02/08/2006
 
-- 
WISPA

Re: [WISPA] MikroTik 5.8GHz Radio cards and settings.

2006-02-09 Thread Tom DeReggi



What exactly is the old mmcx problem? I had some 
original batch Range2's (or is that range 3s, the 2,4Ghz G ones)that were 
giving me sparatic performance at a site, used with RfLink Amps, and the mmcx 
port.

Tom DeReggiRapidDSL  Wireless, IncIntAirNet- Fixed Wireless 
Broadband



  - Original Message - 
  From: 
  Blair Davis 

  To: [EMAIL PROTECTED] 
  Cc: 'WISPA General List' 
  Sent: Thursday, February 09, 2006 3:04 
  PM
  Subject: Re: [WISPA] MikroTik 5.8GHz 
  Radio cards and settings.
  I was/am aware of the mmcx issue and all tests were done with 
  the same u.fl pigtails on each end. When the radio cards were changed, 
  the same u.fl pigtails were used. Only the radio cards were 
  changed.They were the older SR5 cards with the mmcx problem. 
  (proven by testing!!) The mmcx port was down 6db from the u.fl 
  port.[EMAIL PROTECTED] wrote:
  What pigtails and connectors? Mmcx on the SR5 or u.fl? are these new SR5's or
older sr'5s?

  
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf
Of Blair Davis
Sent: Thursday, February 09, 2006 2:08 PM
To: WISPA General List
Subject: [WISPA] MikroTik 5.8GHz Radio cards and settings.

Hey all:

I'm getting some odd results here with a PtP 5.8GHz link using MikroTik
that I setup to test with.  Let me describe the setup...

The link is 7.9 miles with clear LoS and clear Frenel zone.  Each end
has a 27db grid with a 3ft LMR-400 jumper to the MikroTik radio.

Using the link calculator at
http://www.zytrax.com/tech/wireless/calc.htm I get a predicted rx of
-60.8db at each end with CM9 radio cards (17db output).  Using the SR5
cards, (400mW), I get a predicted rx of -51.8

On to the real world results  (all reading taken from the MikroTik's
winbox.  I am using version 2.9.11 on RouterBoard 230's)

With the CM9 cards, I get a measured rx of -62db, well within the margin
of error.  An interesting note here is that I must set the CM9's output
power in the MikroTik at 30db to get these results..  I know that the
MikroTik must be doing something odd with this setting, as the CM9 can
not put out 30db.  Reducing the setting drops the rx strenth by a like
amount.  This link is stable and will pass 30Mb/sec in UDP and 22Mb/sec
in TCP mode

With the SR5 cards, I get a measured rx of -66db, well outside the
margin of error and 15db below the expected rx strength!  An interesting
note here is that I must set the SR5's output power in the MikroTik at
30db to get these results.  I know that the MikroTik must be doing
something odd with this setting, as the SR5 should not put out 30db.
Reducing the setting drops the rx strength by a like amount.  This link
is stable and will pass 24Mb/sec in UDP and 16Mb/sec in TCP mode.

Nothing else is changed when I swap the SR5's for the CM9's or back
again.  I use the same antennas, cables, boards and pigtails.  The
antennas and cables are not moved between tests. (except for moving the
pigtail from one card to the other).

Can anyone tell me what I am doing wrong here?  Or do I just have some
bad SR5 cards?  Or is the tx power setting in the MikroTik flakey?  Or
is the tx power setting relative db not absolute db?

BTW, I will be changing one end to a sector and wish to use the SR5
cards then.  Otherwise I'd be happy with the -62 on the CM9's

Thanks in advance.

--
Blair Davis

AOL IM Screen Name --  Theory240

West Michigan Wireless ISP
269-686-8648

A division of:
Camp Communication Services, INC

--
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/


--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 267.15.3/254 - Release Date: 02/08/2006


  -- 
Blair Davis

AOL IM Screen Name --  Theory240

West Michigan Wireless ISP
269-686-8648

A division of:
Camp Communication Services, INC

  
  

  -- WISPA Wireless List: 
  wireless@wispa.orgSubscribe/Unsubscribe:http://lists.wispa.org/mailman/listinfo/wirelessArchives: 
  http://lists.wispa.org/pipermail/wireless/
-- 
WISPA Wireless List: wireless@wispa.org

Subscribe/Unsubscribe:
http://lists.wispa.org/mailman/listinfo/wireless

Archives: http://lists.wispa.org/pipermail/wireless/