What are these frequencies used for?

[stlouisx50]

What are the following frequencies used for ULS Application - Public Safety 4940-4990 MHz Band - 0005085188 - PIKE, COUNTY OF ?


I used to think they were for radar, but found that X, K, and KA band is not in this range.


I have seen many departments using frequencies like these, but always assumed radar, what are they for?

 

[SurgePGH]

What are the following frequencies used for ULS Application - Public Safety 4940-4990 MHz Band - 0005085188 - PIKE, COUNTY OF ?


I used to think they were for radar, but found that X, K, and KA band is not in this range.


I have seen many departments using frequencies like these, but always assumed radar, what are they for?

Probably RF links. Could be Microwave links.

 

[nd5y]

4.9 GHz Public Safety Spectrum

 

[VASCAR2]

There is talk of a nation wide wireless broadband for public safety use, part of the radio spectrum is allocated for data transmissions in various formats.

 

[nd5y]

There is talk of a nation wide wireless broadband for public safety use, part of the radio spectrum is allocated for data transmissions in various formats.

Nationwide public safety broadband is the 700 MHz D block (763-768/793-798) not 4.9 GHz.

 

[fdcaptjd]

The 4.9 band is mostly used for point-to-point data paths. These can be either Ethernet or T-1 links.

The traffic may be anything from computer networking from one building to the another, or in the case of linked radio systems like P25, Passport, Nexedge or Trbo, this band can be used to link the tower sites.

There are a few other applications like MESH networks, but all concern wireless data.

Regards,

JD

 

[stlouisx50]

The 4.9 band is mostly used for point-to-point data paths. These can be either Ethernet or T-1 links.

The traffic may be anything from computer networking from one building to the another, or in the case of linked radio systems like P25, Passport, Nexedge or Trbo, this band can be used to link the tower sites.

There are a few other applications like MESH networks, but all concern wireless data.

Regards,

JD

Thanks for the info. From what I have read on the forum, you would not be able to listen to the broadcast anyway, and even if you had the ability, you would not receive the signal well being that it's a direct path system.

 

[fdcaptjd]

Yes, nothing to hear via scanner. The equipment available for this band does not transmit using any modulation scheme that can be captured by a "scanner". The signal is carrying Ethernet or time divided data (T1), not simple voice.

JD