FCC Public Notice 4126 dated August 12, 1988

[NJQA]

So I am on the FCC ULS web site, looking at HF station licenses in the Industrial/Business Pool.   The frequency authorizations on licenses often look like this: "000007.30000000-000008.10000000".  This seems to authorize any frequency between 7.3 MHz and 8.1 MHz.

However, at the very bottom of the license are these words in the section that says Waivers/Conditions:
"Only those frequencies identified by PN 4126 released August 12, 1988 are available for use in the authorized frequency bands."

I spent some time searching for this Public Notice but can't seem to find a copy on line.  Before I try writing to the FCC, does anyone have a copy of this Public Notice?

[ThElectriCat]

Unfortunately, FCC notices more than a couple years old are often difficult to find. When my radio stations made the switch to online documentation, we had to find some stuff only a year old (which we SHOULD have already had)
I notice that pretty much all services search like this in ULS unless they have only a few fixed frequencies. Try looking up a ham radio callsign. there arent even frequencies listed. just a reference to part95.

[Exo]

Here's a Bellcore document that contains some of the PN 1426 information on page 18.
http://www.ridethemindway.com/phones/Disk_2/Bell_System_Practices_500-000-001_to_999-999-999/940-500-100_I1.pdf

See below list for a partial frequency listing from FCC Public Notice 4126 Aug 12, 1988.

Frequency Band (MHz)
Frequencies (MHz)
USB_Carrier/Assigned
     
2.19400 – 2.49500
2.28900/2.29040
2.29200/2.29340
2.39500/2.39640
2.39800/2.39940
     
3.15500 – 3.40000
3.17000/3.17140

4.43800 – 4.65000
4.53860/4.54000
4.54860/4.55000
4.57500/4.57640
4.61050/4.61190
4.61350/4.61490
4.63450/4.63590
4.63750/4.63890
4.64700/4.64840

5.00500 – 5.45000
5.06160/5.06300
5.06760/5.06900
6.80610/6.80750
6.85510/6.85650
6.85810/6.85950
     
6.76500 – 7.00000
6.86110/6.86250
6.88510/6.88650
6.88810/6.88950

7.30000 – 8.10000
7.48010/7.48150
7.48310/7.48450
7.54910/7.55050
7.55210/7.55350
7.55510/7.55650
7.55810/7.55950
7.55910/7.56050
7.56210/7.56350
7.69710/7.69850

[KaySeeks]

Frequency Band (MHz)
Frequencies (MHz)
USB_Carrier/Assigned

"USB Carrier" Hmmmmm.

And the "assigned" column looks more like it ought to be the USB and vice-versa, assuming they are assigning by carrier frequencies.

I realize that you are just the messenger but...

[Exo]

"USB Carrier" Hmmmmm.
And the "assigned" column looks more like it ought to be the USB and vice-versa, assuming they are assigning by carrier frequencies.
I realize that you are just the messenger but...

The list is correct, and it is uses the common designations.

The "Assigned Frequency" is the center of the 2.8 kHz bandwidth channel.
With Upper Sideband, the suppressed carrier frequency is lower than the assigned frequency.
Assigned frequency is 1.4 kHz above the USB phantom carrier.
2.8 kHz bandwidth Upper Sideband voice.

[R4002]

In other words, the "carrier" frequency is what your radio display will show.  Add 1.4 kHz to get the "assigned" frequency.  This is common practice for the FCC with their licenses.  For example, a marine coast station licensed for 2182 kHz will show 2183.4 kHz on their license as the "assigned" frequency, even though all radios would show that as 2182 kHz, USB mode.