Rescue 21 Question

[70cutlass442]

I manage a 500' tower site in the Milwaukee area. The owner is an avid boater and member of the CG Auxiliary and really would like to see a rescue 21 RXr on his tower. The question I have after looking at the R21 map is, is there a reason that many of the R21 sites are low sites? They seem to saturate the coast with many sites but their coverage maps do not depict the longer range that I would expect from hi-band at a decent elevation. Is this by design?

 

[ecps92]

I manage a 500' tower site in the Milwaukee area. The owner is an avid boater and member of the CG Auxiliary and really would like to see a rescue 21 RXr on his tower. The question I have after looking at the R21 map is, is there a reason that many of the R21 sites are low sites? They seem to saturate the coast with many sites but their coverage maps do not depict the longer range that I would expect from hi-band at a decent elevation. Is this by design?

What area of Milwaukee?
and define Low ?? Some of there are re-used legacy CG Sites and were always referenced as HI/HIGH sites, vs low being at Boat/Ocean level

Most of what I've seen are generally a good size tower, not monsters as they only need to cover a swath with over-lap of an adjacent tower

Rescue 21 - General Dynamics Mission Systems

Rescue 21, the U.S. Coast Guard’s advanced command, control and direction-finding communications system, was created to better locate mariners in distress and save lives and property at sea and on navigable rivers.

gdmissionsystems.com

 

[n2nov]

The overlap between adjacent tower sites is used for locality and direction finding. A tower that is too tall will overlap many towers in all directions and make direction finding to a small area very difficult. There are many times when the boater in distress does not know where they are and the USCG needs to narrow down the search/response area.

 

[ecps92]

The overlap between adjacent tower sites is used for locality and direction finding. A tower that is too tall will overlap many towers in all directions and make direction finding to a small area very difficult. There are many times when the boater in distress does not know where they are and the USCG needs to narrow down the search/response area.

https://www.navcen.uscg.gov/sites/default/files/images/marcomms/cgcomms/Rescue21/SecLakeMich.jpg

this map shows the overlaps of coverage

 

[n2nov]

All of the Rescue21 coverage maps can be found at Rescue 21 Distress System Coverage | Navigation Center

 

[hill]

As a 38 year member of CG AUX who has served in mid-level leadership positions I really don't see the USCG adding a Remote Fixed Facility (RFF is the name for high sites in Rescue 21). Rescue 21 is built out amd they have all sites they all ready need for system. Plus being an AUX member that owns the site has no bearing on which sites they use.

In my local Sector Maryland National Capital Region our sites range from 200' to 600'