Yes, All pre-existing 5.3 links installed prior to the new DFS rule addition, 
are grand fathered. You are allowed to repair those grandfathered links and 
still not have to use DFS. Manufacturers are now only allowed to provide 
non-DFS 5.3 gear for repair purposes. (such as RMA repalcements).

Its unclear whether a new radio brand (made after DFS rule addition) can be 
used to replace a grandfathered link.
For example, if a 5.3 trango was in place for 8 years and then fails, could it 
be replaced by a Ubiquiti 5.3 radio (non-DFS certified) configured at 
equivellent powers, for the grandfathered path? Because of that question, Used 
5.3Gear has a market.

My personal opinion is that an inforcement agency would not likely press the 
issue, if path was proven to be grandfathered and not causing harm.
I dont think they'd go as far as check dates of a product line's launch, 
installed at each grandfathered link location. Although, I doubt my opinion is 
legally correct.  You should keep a list of all 5.3 Grandfathered links, so if 
questioned, you can prove such.
 
What I did is I made a list of all 5.3 links, and put it in an envelope and 
sent it certified mail to myself, and left it unopened, and then attached a 
second copy of the list to the outside, and then filed it away. 

Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband


  ----- Original Message ----- 
  From: Blair Davis 
  To: WISPA General List 
  Sent: Friday, January 21, 2011 12:57 AM
  Subject: [Spam] Re: [WISPA] 5.2 or 5.4 Short Hops


  And now I learned something... that the 5.25-5.32GHz band is now limited by 
DFS.

  This applies to new links only?



  On 1/21/2011 12:47 AM, Blair Davis wrote: 
    Here is the 5.2GHz grant for the CM9

    
https://fjallfoss.fcc.gov/oetcf/tcb/reports/Tcb731GrantForm.cfm?mode=COPY&RequestTimeout=500&tcb_code=&application_id=972754&fcc_id=NKRCM9

    I'm still looking for the 5.2GHz grant for the xr5, but here is the grant 
for 5.8GHz

    
https://fjallfoss.fcc.gov/oetcf/tcb/reports/Tcb731GrantForm.cfm?mode=COPY&RequestTimeout=500&tcb_code=&application_id=992995&fcc_id=SWX-XR5

    On 1/21/2011 12:05 AM, Jerry Richardson wrote: 
      Can you direct me to the CM9 and xr5 certification for the 5.2 band? 



      I would really like to be able to use this band for a few sites where 
subs are 2-3 miles max





      - Jerry



      From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On 
Behalf Of Blair Davis
      Sent: Thursday, January 20, 2011 9:02 PM
      To: WISPA General List
      Subject: Re: [WISPA] 5.2 or 5.4 Short Hops



      The cm9 and xr5 cards are certified for use in the 5.2GHz band 
(5.18-5.32GHz) and in the 5.8GHz band (5.745-5.825GHz).

      I don't use anything in the 5.4GHz band because that requires DFS

      I really don't want to rehash the modular certification argument again.

      On 1/20/2011 4:55 PM, Gino Villarini wrote: 

      FCC certified?



      Gino A. Villarini

      g...@aeronetpr.com

      Aeronet Wireless Broadband Corp.

      787.273.4143

      From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On 
Behalf Of Blair Davis
      Sent: Thursday, January 20, 2011 5:48 PM
      To: WISPA General List
      Subject: Re: [WISPA] 5.2 or 5.4 Short Hops



      Use 5.2GHz, mikrotik with cm9 or xr5 cards.  I do a PtP link 3200ft on 
5.3GHz.  Carries 50Mbit on a 40MHz channel with ease...

      On 1/20/2011 4:39 PM, Matt wrote: 

Looking for some gear to do 4 short hops under a mile and not interferwith 
existing 2.4 or 5.7 gear.  Was thinking of the 5.2 or 5.4 bandgear.  Whats out 
there that wont break the bank and is FCC compliantin that band?  Leaning 
towards canopy but would like more bandwidthand a lower price.  
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