Re: [WISPA] Pathloss 4

2008-08-06 Thread MichaelDavidLake
Daniel,   Most professionals use Pathloss. Most if not all commercial 
carriers use Pathloss I've been engineering Paths for 8 years and swear by 
it.  Its worth it  Knowing how to use it properly is priceless.  

I'm not in here much any more because some of the members like to go against 
the grain and try to re-invent the wheel with their profound knowledge   and 
lack of experience. 

Pathloss is a winner.  I've used it over the yrs to design networks in over 10 
major US markets. 100-400 paths per market.
Its a great product.  You will need to know how to use a GPS.  The software ( 
Pathlosss ) is a great tool but it should be used in coordination with a 
process of  eyes on/ hands on .  

Nothing is more valuable than Driving the path and terrain to see what the 
software is showing you on paper.   The software isn't going to show things 
like new construction.  It isn't going to show you that 80' tree sitting on the 
highest terrain feature blocking your path with gear at 60' on the 
tower/rooftop.


Mikey  



In a message dated 08/05/08 14:35:25 Eastern Daylight Time, [EMAIL PROTECTED] 
writes:
Anyone on the list using Pathloss 4?  Just trying to figure out if the money 
is really worth it. 

Thanks! 

Daniel White 
3-dB Networks 




 
WISPA Wants You! Join today! 
http://signup.wispa.org/ 

 

WISPA Wireless List: wireless@wispa.org 

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

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



WISPA Wants You! Join today!
http://signup.wispa.org/

 
WISPA Wireless List: wireless@wispa.org

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

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


Re: [WISPA] Pathloss 4

2008-08-06 Thread 3-dB Networks
Thanks Mikey... I know most of licensed link companies use it, but looking a
that $4k price tag makes me really want to think twice about it!

Daniel White
3-dB Networks
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of MichaelDavidLake
Sent: Wednesday, August 06, 2008 8:11 AM
To: WISPA General List
Subject: Re: [WISPA] Pathloss 4

Daniel,   Most professionals use Pathloss. Most if not all commercial
carriers use Pathloss I've been engineering Paths for 8 years and swear
by it.  Its worth it  Knowing how to use it properly is priceless.  

I'm not in here much any more because some of the members like to go against
the grain and try to re-invent the wheel with their profound knowledge
and lack of experience. 

Pathloss is a winner.  I've used it over the yrs to design networks in over
10 major US markets. 100-400 paths per market.
Its a great product.  You will need to know how to use a GPS.  The software
( Pathlosss ) is a great tool but it should be used in coordination with a
process of  eyes on/ hands on .  

Nothing is more valuable than Driving the path and terrain to see what the
software is showing you on paper.   The software isn't going to show things
like new construction.  It isn't going to show you that 80' tree sitting on
the highest terrain feature blocking your path with gear at 60' on the
tower/rooftop.


Mikey  



In a message dated 08/05/08 14:35:25 Eastern Daylight Time, [EMAIL PROTECTED]
writes:
Anyone on the list using Pathloss 4?  Just trying to figure out if the money

is really worth it. 

Thanks! 

Daniel White 
3-dB Networks 




 
WISPA Wants You! Join today! 
http://signup.wispa.org/ 

 

WISPA Wireless List: wireless@wispa.org 

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

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




WISPA Wants You! Join today!
http://signup.wispa.org/


 
WISPA Wireless List: wireless@wispa.org

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

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




WISPA Wants You! Join today!
http://signup.wispa.org/

 
WISPA Wireless List: wireless@wispa.org

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

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


Re: [WISPA] Pathloss 4

2008-08-06 Thread Chuck McCown - 3
What can it do that Radio Mobile does not?

I have been engineering microwave paths since 1978.  Back in the day it was 
curved path profile paper and counting elevation lines on a topo map.  I 
have used about a half dozen software products over the years, including the 
original on line version from ComSearch.  I have NEVER had a path perform 
worse than my estimation.  Many times the received signal strength was 
within 1 dB of prediction.  I consider myself a professional and I am a 
commercial carrier.

So, what's so wonderful about pathloss?

- Original Message - 
From: 3-dB Networks [EMAIL PROTECTED]
To: 'WISPA General List' wireless@wispa.org
Sent: Wednesday, August 06, 2008 8:15 AM
Subject: Re: [WISPA] Pathloss 4


 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of MichaelDavidLake
 Sent: Wednesday, August 06, 2008 8:11 AM
 To: WISPA General List
 Subject: Re: [WISPA] Pathloss 4

 Daniel,   Most professionals use Pathloss. Most if not all commercial
 carriers use Pathloss I've been engineering Paths for 8 years and 
 swear
 by it.  Its worth it  Knowing how to use it properly is priceless.

 I'm not in here much any more because some of the members like to go 
 against
 the grain and try to re-invent the wheel with their profound knowledge
 and lack of experience.

 Pathloss is a winner.  I've used it over the yrs to design networks in 
 over
 10 major US markets. 100-400 paths per market.
 Its a great product.  You will need to know how to use a GPS.  The 
 software
 ( Pathlosss ) is a great tool but it should be used in coordination with a
 process of  eyes on/ hands on .

 Nothing is more valuable than Driving the path and terrain to see what the
 software is showing you on paper.   The software isn't going to show 
 things
 like new construction.  It isn't going to show you that 80' tree sitting 
 on
 the highest terrain feature blocking your path with gear at 60' on the
 tower/rooftop.


 Mikey



 In a message dated 08/05/08 14:35:25 Eastern Daylight Time, [EMAIL PROTECTED]
 writes:
 Anyone on the list using Pathloss 4?  Just trying to figure out if the 
 money

 is really worth it.

 Thanks!

 Daniel White
 3-dB Networks



 
  
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 
  

 WISPA Wireless List: wireless@wispa.org

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

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


 
 
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 
 

 WISPA Wireless List: wireless@wispa.org

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

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



 
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 

 WISPA Wireless List: wireless@wispa.org

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

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




WISPA Wants You! Join today!
http://signup.wispa.org/

 
WISPA Wireless List: wireless@wispa.org

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

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


Re: [WISPA] Pathloss 4

2008-08-06 Thread Brian Webster
Chuck,
I am probably one of the biggest supporters of Radio Mobile, love the
software and agree with you. What Radio Mobile does not do well is things
like reliability factors for  hot standby and if you build in diversity
antennas. For most WISP's this is not an issue. To that end, Radio Mobile
does do well because you can get 10 meter resolution terrain data and now
with the working clutter model you can do pretty well with that if you buy
the data (1 km resolution is free). Radio Mobile also has issues above a
certain frequency due to the fact that the Longley Rice model does not work
that high. One big drawback to any RF tool is the learning curve and your
knowledge of the basic RF theory itself. Knowing the theory helps you to
recognize what the software is doing and why you might get errors. Any of
them have a time commitment to become proficient and then use the tool to
it's full potential. But as you said, it's certainly much easier than doing
it from paper maps counting contour lines :-) I wonder how many people on
this this even know how to do that?



Thank You,
Brian Webster

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Behalf Of Chuck McCown - 3
Sent: Wednesday, August 06, 2008 10:24 AM
To: WISPA General List
Subject: Re: [WISPA] Pathloss 4


What can it do that Radio Mobile does not?

I have been engineering microwave paths since 1978.  Back in the day it was
curved path profile paper and counting elevation lines on a topo map.  I
have used about a half dozen software products over the years, including the
original on line version from ComSearch.  I have NEVER had a path perform
worse than my estimation.  Many times the received signal strength was
within 1 dB of prediction.  I consider myself a professional and I am a
commercial carrier.

So, what's so wonderful about pathloss?

- Original Message -
From: 3-dB Networks [EMAIL PROTECTED]
To: 'WISPA General List' wireless@wispa.org
Sent: Wednesday, August 06, 2008 8:15 AM
Subject: Re: [WISPA] Pathloss 4


 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of MichaelDavidLake
 Sent: Wednesday, August 06, 2008 8:11 AM
 To: WISPA General List
 Subject: Re: [WISPA] Pathloss 4

 Daniel,   Most professionals use Pathloss. Most if not all commercial
 carriers use Pathloss I've been engineering Paths for 8 years and
 swear
 by it.  Its worth it  Knowing how to use it properly is priceless.

 I'm not in here much any more because some of the members like to go
 against
 the grain and try to re-invent the wheel with their profound knowledge
 and lack of experience.

 Pathloss is a winner.  I've used it over the yrs to design networks in
 over
 10 major US markets. 100-400 paths per market.
 Its a great product.  You will need to know how to use a GPS.  The
 software
 ( Pathlosss ) is a great tool but it should be used in coordination with a
 process of  eyes on/ hands on .

 Nothing is more valuable than Driving the path and terrain to see what the
 software is showing you on paper.   The software isn't going to show
 things
 like new construction.  It isn't going to show you that 80' tree sitting
 on
 the highest terrain feature blocking your path with gear at 60' on the
 tower/rooftop.


 Mikey



 In a message dated 08/05/08 14:35:25 Eastern Daylight Time, [EMAIL PROTECTED]
 writes:
 Anyone on the list using Pathloss 4?  Just trying to figure out if the
 money

 is really worth it.

 Thanks!

 Daniel White
 3-dB Networks



 --
--
 
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 --
--
 

 WISPA Wireless List: wireless@wispa.org

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

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


 --
--
 
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 --
--
 

 WISPA Wireless List: wireless@wispa.org

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

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



 --
--
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 --
--

 WISPA Wireless List: wireless@wispa.org

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

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






WISPA Wants You! Join today!
http://signup.wispa.org/



WISPA Wireless List: wireless

Re: [WISPA] Pathloss 4

2008-08-06 Thread Chuck McCown
Most of the tools use the old ATT long lines long haul and short haul 
availbility factors that were generated for analog radios.
It is the opinion of some that digital radios do not need to need nearly  as 
much fade margin as the old analogs.
I would have to say, that our experience with some 60 mile paths using 
cyclones, I would have to agree with that opinion.
Does Pathloss have a different availability formula for digital modulation?

- Original Message - 
From: Brian Webster [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Wednesday, August 06, 2008 8:49 AM
Subject: Re: [WISPA] Pathloss 4


 Chuck,
 I am probably one of the biggest supporters of Radio Mobile, love the
 software and agree with you. What Radio Mobile does not do well is things
 like reliability factors for  hot standby and if you build in diversity
 antennas. For most WISP's this is not an issue. To that end, Radio Mobile
 does do well because you can get 10 meter resolution terrain data and now
 with the working clutter model you can do pretty well with that if you buy
 the data (1 km resolution is free). Radio Mobile also has issues above a
 certain frequency due to the fact that the Longley Rice model does not 
 work
 that high. One big drawback to any RF tool is the learning curve and your
 knowledge of the basic RF theory itself. Knowing the theory helps you to
 recognize what the software is doing and why you might get errors. Any of
 them have a time commitment to become proficient and then use the tool to
 it's full potential. But as you said, it's certainly much easier than 
 doing
 it from paper maps counting contour lines :-) I wonder how many people on
 this this even know how to do that?



 Thank You,
 Brian Webster

 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
 Behalf Of Chuck McCown - 3
 Sent: Wednesday, August 06, 2008 10:24 AM
 To: WISPA General List
 Subject: Re: [WISPA] Pathloss 4


 What can it do that Radio Mobile does not?

 I have been engineering microwave paths since 1978.  Back in the day it 
 was
 curved path profile paper and counting elevation lines on a topo map.  I
 have used about a half dozen software products over the years, including 
 the
 original on line version from ComSearch.  I have NEVER had a path perform
 worse than my estimation.  Many times the received signal strength was
 within 1 dB of prediction.  I consider myself a professional and I am a
 commercial carrier.

 So, what's so wonderful about pathloss?

 - Original Message -
 From: 3-dB Networks [EMAIL PROTECTED]
 To: 'WISPA General List' wireless@wispa.org
 Sent: Wednesday, August 06, 2008 8:15 AM
 Subject: Re: [WISPA] Pathloss 4


 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of MichaelDavidLake
 Sent: Wednesday, August 06, 2008 8:11 AM
 To: WISPA General List
 Subject: Re: [WISPA] Pathloss 4

 Daniel,   Most professionals use Pathloss. Most if not all commercial
 carriers use Pathloss I've been engineering Paths for 8 years and
 swear
 by it.  Its worth it  Knowing how to use it properly is priceless.

 I'm not in here much any more because some of the members like to go
 against
 the grain and try to re-invent the wheel with their profound knowledge
 and lack of experience.

 Pathloss is a winner.  I've used it over the yrs to design networks in
 over
 10 major US markets. 100-400 paths per market.
 Its a great product.  You will need to know how to use a GPS.  The
 software
 ( Pathlosss ) is a great tool but it should be used in coordination with 
 a
 process of  eyes on/ hands on .

 Nothing is more valuable than Driving the path and terrain to see what 
 the
 software is showing you on paper.   The software isn't going to show
 things
 like new construction.  It isn't going to show you that 80' tree sitting
 on
 the highest terrain feature blocking your path with gear at 60' on the
 tower/rooftop.


 Mikey



 In a message dated 08/05/08 14:35:25 Eastern Daylight Time, 
 [EMAIL PROTECTED]
 writes:
 Anyone on the list using Pathloss 4?  Just trying to figure out if the
 money

 is really worth it.

 Thanks!

 Daniel White
 3-dB Networks



 --
 --
 
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 --
 --
 

 WISPA Wireless List: wireless@wispa.org

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

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


 --
 --
 
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 --
 --
 

 WISPA Wireless List: wireless@wispa.org

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

 Archives: http://lists.wispa.org

Re: [WISPA] Pathloss 4

2008-08-06 Thread Brian Webster
I don't know the answer to that question. I have always pondered the issue
of fade margin on digital paths. If you factor in an error checking in both
the modulation methods and the TCPIP stack, you can deal with minor fades
and in many cases you might not even notice a short fade. At that point
however you would still need to have a tool that deals well with temperature
inversions and rain fade, because if you do get a fade in those situations
it more than likely will last long enough to be noticed even on a digital
path. But in most cases for WISP's in today's usage patterns they won't run
in to those situations. The one thing that will start to push us back to
engineering like analog paths, will be the migration towards net
applications that are a more constant demand on the pipe and not bursting in
nature. Things that would be sensitive to packet resends will start to show
a weak backhaul with fading issues.



Thank You,
Brian Webster

-Original Message-
From: Chuck McCown [mailto:[EMAIL PROTECTED]
Sent: Wednesday, August 06, 2008 10:58 AM
To: [EMAIL PROTECTED]; WISPA General List
Subject: Re: [WISPA] Pathloss 4


Most of the tools use the old ATT long lines long haul and short haul
availbility factors that were generated for analog radios.
It is the opinion of some that digital radios do not need to need nearly  as
much fade margin as the old analogs.
I would have to say, that our experience with some 60 mile paths using
cyclones, I would have to agree with that opinion.
Does Pathloss have a different availability formula for digital modulation?

- Original Message -
From: Brian Webster [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Wednesday, August 06, 2008 8:49 AM
Subject: Re: [WISPA] Pathloss 4


 Chuck,
 I am probably one of the biggest supporters of Radio Mobile, love the
 software and agree with you. What Radio Mobile does not do well is things
 like reliability factors for  hot standby and if you build in diversity
 antennas. For most WISP's this is not an issue. To that end, Radio Mobile
 does do well because you can get 10 meter resolution terrain data and now
 with the working clutter model you can do pretty well with that if you buy
 the data (1 km resolution is free). Radio Mobile also has issues above a
 certain frequency due to the fact that the Longley Rice model does not
 work
 that high. One big drawback to any RF tool is the learning curve and your
 knowledge of the basic RF theory itself. Knowing the theory helps you to
 recognize what the software is doing and why you might get errors. Any of
 them have a time commitment to become proficient and then use the tool to
 it's full potential. But as you said, it's certainly much easier than
 doing
 it from paper maps counting contour lines :-) I wonder how many people on
 this this even know how to do that?



 Thank You,
 Brian Webster

 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
 Behalf Of Chuck McCown - 3
 Sent: Wednesday, August 06, 2008 10:24 AM
 To: WISPA General List
 Subject: Re: [WISPA] Pathloss 4


 What can it do that Radio Mobile does not?

 I have been engineering microwave paths since 1978.  Back in the day it
 was
 curved path profile paper and counting elevation lines on a topo map.  I
 have used about a half dozen software products over the years, including
 the
 original on line version from ComSearch.  I have NEVER had a path perform
 worse than my estimation.  Many times the received signal strength was
 within 1 dB of prediction.  I consider myself a professional and I am a
 commercial carrier.

 So, what's so wonderful about pathloss?

 - Original Message -
 From: 3-dB Networks [EMAIL PROTECTED]
 To: 'WISPA General List' wireless@wispa.org
 Sent: Wednesday, August 06, 2008 8:15 AM
 Subject: Re: [WISPA] Pathloss 4


 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of MichaelDavidLake
 Sent: Wednesday, August 06, 2008 8:11 AM
 To: WISPA General List
 Subject: Re: [WISPA] Pathloss 4

 Daniel,   Most professionals use Pathloss. Most if not all commercial
 carriers use Pathloss I've been engineering Paths for 8 years and
 swear
 by it.  Its worth it  Knowing how to use it properly is priceless.

 I'm not in here much any more because some of the members like to go
 against
 the grain and try to re-invent the wheel with their profound knowledge
 and lack of experience.

 Pathloss is a winner.  I've used it over the yrs to design networks in
 over
 10 major US markets. 100-400 paths per market.
 Its a great product.  You will need to know how to use a GPS.  The
 software
 ( Pathlosss ) is a great tool but it should be used in coordination with
 a
 process of  eyes on/ hands on .

 Nothing is more valuable than Driving the path and terrain to see what
 the
 software is showing you on paper.   The software isn't going to show
 things
 like new construction.  It isn't going to show you that 80

Re: [WISPA] Pathloss 4

2008-08-06 Thread Chuck McCown
I'll take a copy of your excel file Charles.
;-)
- Original Message - 
From: Charles Wu [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Wednesday, August 06, 2008 9:24 AM
Subject: Re: [WISPA] Pathloss 4


Hi Michael,

All Pathloss basically does is calculate Vigants-Barnett and/or ITU 530-9 on 
top of a topo-USA

It also doesn't do a good job of taking into account for near/far field 
interference and all those other black magic Rf affects that occur

All-in-all, I don't see much difference between that and the Motorola / 
Orthogon link calc (which, initially, was just a bunch of ITU models coded 
into an excel spreadsheet)

That said, although one could argue that Pathloss is a good tool for someone 
who doesn't have an engineering background to quickly design paths, I would 
counter saying that if you don't actually understand the underlying models 
behind Pathloss, then you shouldn't be billing yourself as a Microwave 
engineer =)

That said, if one truly understands the background theory behind the 
availability models, you're probably bright enough to spend the 1-2 hours 
coding some VB macros into an excel spreadsheet to get the exact same result 
and you'll have saved yourself $4k

-Charles

P.S. I've attached a copy of ITU Recommendation P-530-9: Propagation Data 
and Prediction Methods required for the design of terrestrial line-of-sight 
systems if anyone is truly interested and wants to learn how stuff actually 
works -- personally, I think understanding this and Vigants-Barnett should 
be a pre-requisite for anyone who truly wants to call themselves an 
Microwave Rf Engineer

---
WiNOG Wireless Roadshows
Coming to a City Near You
http://www.winog.com


-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On 
Behalf Of MichaelDavidLake
Sent: Wednesday, August 06, 2008 9:11 AM
To: WISPA General List
Subject: Re: [WISPA] Pathloss 4

Daniel,   Most professionals use Pathloss. Most if not all commercial 
carriers use Pathloss I've been engineering Paths for 8 years and swear 
by it.  Its worth it  Knowing how to use it properly is priceless.

I'm not in here much any more because some of the members like to go against 
the grain and try to re-invent the wheel with their profound knowledge 
and lack of experience.

Pathloss is a winner.  I've used it over the yrs to design networks in over 
10 major US markets. 100-400 paths per market.
Its a great product.  You will need to know how to use a GPS.  The software 
( Pathlosss ) is a great tool but it should be used in coordination with a 
process of  eyes on/ hands on .

Nothing is more valuable than Driving the path and terrain to see what the 
software is showing you on paper.   The software isn't going to show things 
like new construction.  It isn't going to show you that 80' tree sitting on 
the highest terrain feature blocking your path with gear at 60' on the 
tower/rooftop.


Mikey



In a message dated 08/05/08 14:35:25 Eastern Daylight Time, [EMAIL PROTECTED] 
writes:
Anyone on the list using Pathloss 4?  Just trying to figure out if the money
is really worth it.

Thanks!

Daniel White
3-dB Networks




WISPA Wants You! Join today!
http://signup.wispa.org/


WISPA Wireless List: wireless@wispa.org

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

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



WISPA Wants You! Join today!
http://signup.wispa.org/


WISPA Wireless List: wireless@wispa.org

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

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








 
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 

 WISPA Wireless List: wireless@wispa.org

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

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




WISPA Wants You! Join today!
http://signup.wispa.org/

 
WISPA Wireless List: wireless@wispa.org

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

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


Re: [WISPA] Pathloss 4

2008-08-06 Thread Charles Wu
Bah...

You're supposed to be the creative, inquisitive one Chuck =)

In all honesty, we've been making some internal changes to accommodate nLoS 
(specifically, knife-edge and a few others) -- wanna be as nifty and cool as 
the Orthogon calculator...when that's done, I'll be sure to send it over

-Charles

---
WiNOG Wireless Roadshows
Coming to a City Near You
http://www.winog.com


-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chuck McCown
Sent: Wednesday, August 06, 2008 10:36 AM
To: WISPA General List
Subject: Re: [WISPA] Pathloss 4

I'll take a copy of your excel file Charles.
;-)
- Original Message -
From: Charles Wu [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Wednesday, August 06, 2008 9:24 AM
Subject: Re: [WISPA] Pathloss 4


Hi Michael,

All Pathloss basically does is calculate Vigants-Barnett and/or ITU 530-9 on
top of a topo-USA

It also doesn't do a good job of taking into account for near/far field
interference and all those other black magic Rf affects that occur

All-in-all, I don't see much difference between that and the Motorola /
Orthogon link calc (which, initially, was just a bunch of ITU models coded
into an excel spreadsheet)

That said, although one could argue that Pathloss is a good tool for someone
who doesn't have an engineering background to quickly design paths, I would
counter saying that if you don't actually understand the underlying models
behind Pathloss, then you shouldn't be billing yourself as a Microwave
engineer =)

That said, if one truly understands the background theory behind the
availability models, you're probably bright enough to spend the 1-2 hours
coding some VB macros into an excel spreadsheet to get the exact same result
and you'll have saved yourself $4k

-Charles

P.S. I've attached a copy of ITU Recommendation P-530-9: Propagation Data
and Prediction Methods required for the design of terrestrial line-of-sight
systems if anyone is truly interested and wants to learn how stuff actually
works -- personally, I think understanding this and Vigants-Barnett should
be a pre-requisite for anyone who truly wants to call themselves an
Microwave Rf Engineer

---
WiNOG Wireless Roadshows
Coming to a City Near You
http://www.winog.com


-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of MichaelDavidLake
Sent: Wednesday, August 06, 2008 9:11 AM
To: WISPA General List
Subject: Re: [WISPA] Pathloss 4

Daniel,   Most professionals use Pathloss. Most if not all commercial
carriers use Pathloss I've been engineering Paths for 8 years and swear
by it.  Its worth it  Knowing how to use it properly is priceless.

I'm not in here much any more because some of the members like to go against
the grain and try to re-invent the wheel with their profound knowledge
and lack of experience.

Pathloss is a winner.  I've used it over the yrs to design networks in over
10 major US markets. 100-400 paths per market.
Its a great product.  You will need to know how to use a GPS.  The software
( Pathlosss ) is a great tool but it should be used in coordination with a
process of  eyes on/ hands on .

Nothing is more valuable than Driving the path and terrain to see what the
software is showing you on paper.   The software isn't going to show things
like new construction.  It isn't going to show you that 80' tree sitting on
the highest terrain feature blocking your path with gear at 60' on the
tower/rooftop.


Mikey



In a message dated 08/05/08 14:35:25 Eastern Daylight Time, [EMAIL PROTECTED]
writes:
Anyone on the list using Pathloss 4?  Just trying to figure out if the money
is really worth it.

Thanks!

Daniel White
3-dB Networks




WISPA Wants You! Join today!
http://signup.wispa.org/


WISPA Wireless List: wireless@wispa.org

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

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



WISPA Wants You! Join today!
http://signup.wispa.org/


WISPA Wireless List: wireless@wispa.org

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

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








 
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 

 WISPA Wireless List: wireless@wispa.org

 Subscribe/Unsubscribe:
 http://lists.wispa.org

Re: [WISPA] Pathloss 4

2008-08-06 Thread Jerry Richardson
I can't speak to Pathloss as I have not used it, but I will agree that
RM is pretty accurate. It comes down to the accuacy and attention to
detail.

Garbage in = garbage out.

__ 
Jerry Richardson 
airCloud Communications
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Chuck McCown - 3
Sent: Wednesday, August 06, 2008 7:24 AM
To: WISPA General List
Subject: Re: [WISPA] Pathloss 4

What can it do that Radio Mobile does not?

I have been engineering microwave paths since 1978.  Back in the day it
was 
curved path profile paper and counting elevation lines on a topo map.  I

have used about a half dozen software products over the years, including
the 
original on line version from ComSearch.  I have NEVER had a path
perform 
worse than my estimation.  Many times the received signal strength was 
within 1 dB of prediction.  I consider myself a professional and I am a 
commercial carrier.

So, what's so wonderful about pathloss?

- Original Message - 
From: 3-dB Networks [EMAIL PROTECTED]
To: 'WISPA General List' wireless@wispa.org
Sent: Wednesday, August 06, 2008 8:15 AM
Subject: Re: [WISPA] Pathloss 4


 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On
 Behalf Of MichaelDavidLake
 Sent: Wednesday, August 06, 2008 8:11 AM
 To: WISPA General List
 Subject: Re: [WISPA] Pathloss 4

 Daniel,   Most professionals use Pathloss. Most if not all
commercial
 carriers use Pathloss I've been engineering Paths for 8 years and 
 swear
 by it.  Its worth it  Knowing how to use it properly is priceless.

 I'm not in here much any more because some of the members like to go 
 against
 the grain and try to re-invent the wheel with their profound
knowledge
 and lack of experience.

 Pathloss is a winner.  I've used it over the yrs to design networks in

 over
 10 major US markets. 100-400 paths per market.
 Its a great product.  You will need to know how to use a GPS.  The 
 software
 ( Pathlosss ) is a great tool but it should be used in coordination
with a
 process of  eyes on/ hands on .

 Nothing is more valuable than Driving the path and terrain to see what
the
 software is showing you on paper.   The software isn't going to show 
 things
 like new construction.  It isn't going to show you that 80' tree
sitting 
 on
 the highest terrain feature blocking your path with gear at 60' on the
 tower/rooftop.


 Mikey



 In a message dated 08/05/08 14:35:25 Eastern Daylight Time,
[EMAIL PROTECTED]
 writes:
 Anyone on the list using Pathloss 4?  Just trying to figure out if the

 money

 is really worth it.

 Thanks!

 Daniel White
 3-dB Networks






  
 WISPA Wants You! Join today!
 http://signup.wispa.org/



  

 WISPA Wireless List: wireless@wispa.org

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

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





 
 WISPA Wants You! Join today!
 http://signup.wispa.org/



 

 WISPA Wireless List: wireless@wispa.org

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

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






 WISPA Wants You! Join today!
 http://signup.wispa.org/




 WISPA Wireless List: wireless@wispa.org

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

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





WISPA Wants You! Join today!
http://signup.wispa.org/


 
WISPA Wireless List: wireless@wispa.org

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

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



WISPA Wants You! Join today!
http://signup.wispa.org/

 
WISPA Wireless List: wireless@wispa.org

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

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


[WISPA] Pathloss 4

2008-08-05 Thread 3-dB Networks
Anyone on the list using Pathloss 4?  Just trying to figure out if the money
is really worth it.

Thanks!

Daniel White
3-dB Networks




WISPA Wants You! Join today!
http://signup.wispa.org/

 
WISPA Wireless List: wireless@wispa.org

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

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


Re: [WISPA] Pathloss 4

2008-08-05 Thread Charles Wu
I'll be more than happy to sell you my copy =)

Uh...think that answers the question...

-Charles

---
WiNOG Wireless Roadshows
Coming to a City Near You
http://www.winog.com


-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of 3-dB Networks
Sent: Tuesday, August 05, 2008 1:35 PM
To: 'WISPA General List'
Subject: [WISPA] Pathloss 4

Anyone on the list using Pathloss 4?  Just trying to figure out if the money
is really worth it.

Thanks!

Daniel White
3-dB Networks




WISPA Wants You! Join today!
http://signup.wispa.org/


WISPA Wireless List: wireless@wispa.org

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

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



WISPA Wants You! Join today!
http://signup.wispa.org/

 
WISPA Wireless List: wireless@wispa.org

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

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


Re: [WISPA] Pathloss 4

2008-08-05 Thread John Seaman
We use it every day for running path profiles and microwave reliability
estimates for customers... I would say we definitely got our money's
worth.   

John Seaman
Trango Broadband

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of 3-dB Networks
Sent: Tuesday, August 05, 2008 11:35 AM
To: 'WISPA General List'
Subject: [WISPA] Pathloss 4

Anyone on the list using Pathloss 4?  Just trying to figure out if the
money is really worth it.

Thanks!

Daniel White
3-dB Networks





WISPA Wants You! Join today!
http://signup.wispa.org/


 
WISPA Wireless List: wireless@wispa.org

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

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



WISPA Wants You! Join today!
http://signup.wispa.org/

 
WISPA Wireless List: wireless@wispa.org

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

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


Re: [WISPA] Pathloss 4

2008-08-05 Thread Chuck McCown - 3
I prefer RadioMobile.

- Original Message - 
From: John Seaman [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Tuesday, August 05, 2008 4:02 PM
Subject: Re: [WISPA] Pathloss 4


 We use it every day for running path profiles and microwave reliability
 estimates for customers... I would say we definitely got our money's
 worth.

 John Seaman
 Trango Broadband

 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of 3-dB Networks
 Sent: Tuesday, August 05, 2008 11:35 AM
 To: 'WISPA General List'
 Subject: [WISPA] Pathloss 4

 Anyone on the list using Pathloss 4?  Just trying to figure out if the
 money is really worth it.

 Thanks!

 Daniel White
 3-dB Networks



 
 
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 
 

 WISPA Wireless List: wireless@wispa.org

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

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


 
 WISPA Wants You! Join today!
 http://signup.wispa.org/
 

 WISPA Wireless List: wireless@wispa.org

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

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




WISPA Wants You! Join today!
http://signup.wispa.org/

 
WISPA Wireless List: wireless@wispa.org

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

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