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General Scanning Discussion - For general questions not specific to a model of scanner or general discussion of use of a scanner. Manufacturer specific posts should be directed to the appropriate forums below and location specific posts should go in the appropriate regional forum..

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Old 03-13-2018, 1:48 PM
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Default FCC data base "Frequency" modifier

In the FCC database, some numerical frequencies are followed by a space then an upper-case letter "V."

An example is callsign WPTE977, licensed to Georgetown, County of (S.C.), Site 2, Pawleys Isl, 3700 West of City off US 17 on Dump Road:
853.23750000 V
853.35000000 V.

What does the "V" signify, and are there other letter appendages?

Paul
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Old 03-13-2018, 1:53 PM
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Where are you seeing this at?
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Old 03-13-2018, 2:06 PM
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Do you have a link to the page you are looking at?

I looked at the FCC license, and I'm not seeing anything other than the frequency.
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Old 03-13-2018, 2:12 PM
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I see this in the results of a FCC "Site / Frequency / Market Search Results" "Universal Licensing System Database -- Sites" with the following "Search Criteria":
"Frequency Range = 853 MHz through 861 MHz, Computed Box Based on Point/Radius: Center = 33 47' 48" N 78 43' 36" W, Radius = 25 Miles, Currently Licensed and Pending Facilities"

http://fjallfoss.fcc.gov/General_Men...limit_select=4

Sorry, not smart enough to know how to have put the above as a link.

Paul
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Old 03-13-2018, 2:27 PM
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V means vertical polarization. Not all licenses have an entry for antenna polarization. It shows up on the Antenna # field on the Locations tab on the license.
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Old 03-13-2018, 3:31 PM
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Interesting. I see the "V -- Vertical" in the "Polarization" field for "Antenna 1."

Seems to me that it would be rare to have horizontal polarization for mobile and handheld transceivers.

Paul
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Old 03-13-2018, 9:08 PM
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Quote:
Originally Posted by wd4edu View Post
Seems to me that it would be rare to have horizontal polarization for mobile and handheld transceivers.

Paul
Yes, it would be rare for mobile/portable use, but not unheard of for Part 90 use for point to point links, telemetry, etc.
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Old 03-14-2018, 1:16 PM
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Should have expressed my thinking more clearly.

If vertical polarization is far more common than horizontal polarization, I'm surprised that it would be noted. It's "unremarkable."

On the other hand, it would be useful to have the FCC's database notate a numerical frequency with the appendage "H" -- for horizontal polarization -- but I haven't seen any examples of that practice.

Paul
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Old 03-14-2018, 1:45 PM
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Other services besides LMR use horizontal and other polarization types.
There is a list of valid ones at https://wireless2.fcc.gov/helpfiles/...Microwave.html

Polarization—Polarization of the transmitting signal, valid codes are
D—Rotating
E—Elliptical
F—45 Degrees
H—Horizontal
J—Linear
L—Left Hand Circular
R—Right hand circular
S—Horizontal and Vertical
T—Right and Left hand circular
V—Vertical
X—Other
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