Unless you are scud running... I Follow Railroads.  
I don’t do it anymore by my former business partner loved to do this.  Scared 
the crap out of me.  So I got an IFR ticket so I never had to do that again.  

From: Mark Radabaugh 
Sent: Tuesday, April 14, 2020 5:38 PM
To: AnimalFarm Microwave Users Group 
Subject: Re: [AFMUG] TOWAIR and ASR for existing tower

Those numbers in the link are the ones that determine if you need to check 
further.    This is the procedure design manual  

https://www.faa.gov/documentLibrary/media/Order/FAA_Order_8260.3D1.pdf

It gets very detailed in how the clearances are determined.   Makes me happy to 
know the amount of detail that goes into making sure if I follow the procedures 
while flying in the clouds I don’t run into things.

Mark


  On Apr 14, 2020, at 7:08 PM, <ch...@wbmfg.com> <ch...@wbmfg.com> wrote:

  https://hamradioschool.com/g1b01-maximum-antenna-structure-height/

  From: Ken Hohhof 
  Sent: Tuesday, April 14, 2020 4:47 PM
  To: 'AnimalFarm Microwave Users Group' 
  Subject: [AFMUG] TOWAIR and ASR for existing tower

  We have a tower next to a commercial building, I think it’s a 45 or 50 ft 
probably Rohn 45G.  It is near a smallish regional airport but pretty much 90 
degrees to the runway.  We need to swap out the 5 GHz backhaul links on this 
tower for licensed.
   
  The frequency coordinator is telling us that according to TOWAIR we need to 
file for an ASR, I assume they mean not just with the FCC but with the FAA.
   
  By doing so, are we opening Pandora’s box, where they tell us not only is our 
request denied, we have to take down the tower that has been there for 20 
years?  Is this one of those things where we will really regret asking the 
question and should have just kept quiet and suffered with the 5 GHz 
interference?


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