What is this symbol at PRB VOR?

[NordicDave]

Couldn't find (L) on the IFR Low Enroute chart legend used for the Paso Robles VOR. Curious who may know.

I know (L) on the Airport identifier indicates pilot controlled lighting. Little stumped as to the 2 L's on the VOR.

 

[crash7]

Chart Supplement (AFD)

Sent from my iPhone using Tapatalk

 

[dmspilot]

But why are there two?

 

[tsts4]

My guess is the 2nd one is a typo

 

[RussR]

There are two facilities there, a VOR and a TACAN. Both are L class service volumes. The Chart Supplement legend explains it pretty succinctly, it's on page 29.

There are two entries because each facility may have a different service volume.

 

[luvflyin]

There are two facilities there, a VOR and a TACAN. Both are L class service volumes. The Chart Supplement legend explains it pretty succinctly, it's on page 29.

There are two entries because each facility may have a different service volume.

It could also happen with a VOR/DME. The DME service volume will be listed second

 

[NordicDave]

Thanks guys very helpful.

 

[Let'sgoflying!]

....waiting for that rare poster who has ever used (L) annotations in a practical way while flying.

 

[John Collins]

Couldn't find (L) on the IFR Low Enroute chart legend used for the Paso Robles VOR. Curious who may know.

I know (L) on the Airport identifier indicates pilot controlled lighting. Little stumped as to the 2 L's on the VOR.

View attachment 133253

First L describes the Signal Service Volume (SSV) for the VOR and second for the DME for the Nav Facility PRB. The service volumes are described in the AIM 1-1-8. With the FAA MON program removing many VOR east of the Rockies, they added new service volumes so that legally one could use VOR or DME at greater distances for IFR navigation. VOR support L, H, VL, and VH service volumes when used off airways and DME added DL and DH to the preexisting L and H. The DME service volumes used to be identical with the L and H of VOR, but the new designations no longer are necessarily the same for both DME and VOR. Although VOR are being removed with the MON, the DME infrastructure is mostly staying the same or being increased in some areas. DME is used with DME-DME RNAV receivers some FMS use to provide RNAV 2 and RNAV 1 capability over land. Of most interest to the piston crowd is the VL and VH which increase the usable distance from a VOR when 5000 ATH (Above Transmitter Height) from 40 NM to 70 NM. With fewer VOR in the system, the extra service volume was needed to support the MON VOR system as a backup to GPS.

 

[BillTIZ]

....waiting for that rare poster who has ever used (L) annotations in a practical way while flying.

A lot of us "high flyers" stayed away from the (L) VORTACs. L was only "good" to FL180 and 40nm range.
Sorry, I knew you were waiting for someone to answer, so I did.

 

[kontiki]

Go here, Check page 64, I believe it's the NAVAID STANDARD SERVICE VOLUME (SSV) CLASSIFICATIO -> https://aeronav.faa.gov/user_guide/cug-complete_20240905.pdf

 

[WDD]

Nice bit of information - appreciate the question and answers.

MON seems like a great idea. My plane doesn't currently have a Nav radio. I'm getting panel work to install a GTN 650 specifically to get it; I do believe in having radio navigation back up.

That said, I'll more than likely never use a VOR in my life time except maybe for IFR currency flying under a hood with an SP.

 

[Palmpilot]

The good thing about VORs (besides being a good backup) is that there is a lot less button-pushing!