Of course they are. There is a good document published by Motorola on this very subject *http://tinyurl.com/22quxyu*

I've been in contact with 2 other large operators with the exact same situation. They each moved to a ABCD channel plan as well.

-Eric

On 12/16/2010 4:48 PM, David Sovereen wrote:

Are your APs not GPS-synced?

Dave

On Dec 16, 2010 5:04 PM, "Eric Muehleisen" <ericm...@gmail.com <mailto:ericm...@gmail.com>> wrote:
> We have a pretty large 320 network (200 SM's) and just recently had to
> move to 3.5mhz channel sizes because of self-interference between
> sectors. The ABAB channel plan will not scale well and you will suffer
> high packet loss as a result. Once your cluster hits around 20-30 SM's
> you'll begin to see it.
>
> Moving to a ABCD channel plan has resolved many issues and packet loss
> is very minimal now. Customer experience has greatly improved. We have
> subscribers at 9 miles so moving to 5mhz channel size is not an option
> until the "extended range" firmware is released. Obviously, once this
> software is released and the product gains upper 25mhz approval we can
> then run ABCD channel plan in 10mhz. Until then, we're stuck.
>
> -Eric
>
> On 12/16/2010 3:39 PM, Carl Shivers wrote:
>> I'm running v6.2.4.3 on the SMs and System Release e2.0.1 on the APs.
>>
>> -----Original Message-----
>> From: wireless-boun...@wispa.org <mailto:wireless-boun...@wispa.org> [mailto:wireless-boun...@wispa.org <mailto:wireless-boun...@wispa.org>] On
>> Behalf Of David Sovereen
>> Sent: Thursday, December 16, 2010 2:07 PM
>> To: WISPA General List
>> Subject: Re: [WISPA] Motorola PMP 320
>>
>> The current firmware works very well. If you haven't done so already,
>> upgrade to the latest firmware, as it resolves tons of RF link
>> stability problems.
>>
>> If that's not your issue, please post details. We have PMP320
>> deployed and are happy with it.
>>
>> Dave
>>
>>
>> On Thu, Dec 16, 2010 at 12:33 PM, Justin Wilson<li...@mtin.net <mailto:li...@mtin.net>> wrote:
>>> My experience with the Moto 3.65 stuff is the firmware downright
>> stinks.
>>> I know they are working on improvements and I have not re-visited this in
>>> the past months.
>>>
>>> Justin
>>> --
>>> Justin Wilson<j...@mtin.net <mailto:j...@mtin.net>>
>>> Aol& Yahoo IM: j2sw
>>> http://www.mtin.net/blog – xISP News
>>> http://www.twitter.com/j2sw – Follow me on Twitter
>>> Wisp Consulting – Tower Climbing – Network Support
>>>
>>>
>>>
>>> ________________________________
>>> From: Carl Shivers<cshiv...@aristotle.net <mailto:cshiv...@aristotle.net>> >>> Reply-To: WISPA General List<wireless@wispa.org <mailto:wireless@wispa.org>>
>>> Date: Thu, 16 Dec 2010 11:28:06 -0600
>>> To: 'WISPA General List'<wireless@wispa.org <mailto:wireless@wispa.org>>
>>> Subject: [WISPA] Motorola PMP 320
>>>
>>> During a breakout session at the recent Wireless Without Limits
>> conference,
>>> one of the attendees was touting that they are really impressed with the
>> new
>>> Motorola 3.65 GHz system. We have recently installed this system and we
>> are
>>> having some problems maintaining links. This attendee told stories about
>> how
>>> he had to tweak his SM installations, but once he had a link, it was
>>> generally solid.
>>>
>>> I would like to conference with one of you who are having success with
>> this
>>> system so as to better utilize our installation.
>>>
>>> ________________________________
>>>
>>>
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