Frequency Details

Shows reference and technical information about the selected frequency, and indicates if U.S. coordination is required.

Actions

Edit Frequency
Click to go to the Edit Frequency page to edit the information about this frequency. Note that this function is only available for applications that have not been submitted.

Copy Frequency
Click to go to the Add Frequency page to create a new frequency record for the station based on the technical specifications defined for the current frequency.

Fields

Application Type
Indicates the type of change to this record for the application. Can be:

• New: a new record that has been created for the application.
• Modified: an existing record that has been identified and changed.

Record Identifier
Number assigned to each individual frequency record at the time of the original data entry.

Tx/Rx
Indicates whether the station operates as a transmitter (Tx), receiver (Rx), or both (Tx/Rx).

Last Edited
The date that this record was last modified and saved.

Frequency (Tx)
Assigned transmit frequency or lower frequency for a band in Mhz.

For GPS active repeaters the transmit and receive frequency is 1575.42 MHz. Enter as a single TX/RX type record.

Frequency (Rx)
Assigned receive frequency or lower frequency for a band in MHz.

Total Attenuation (Tx)
Total attenuation is the summation of losses in dB between the radio's Tx antenna port and antenna.

Total Attenuation (Rx)
The total attenuation is defined as the summation of the losses in dB, between the radio's antenna coupling or antenna branching unit, and the antenna for the transmit and receive paths. Include any additional branching losses for both the transmit and receive paths as indicated by the equipment manufacturer for the equipment configuration used.

RF Output Power (W)
The RF Output Power is defined as the transmitter power in WATTS, that is present at output of the radio's antenna coupling or antenna branching unit. Usually, this is the value indicated in the equipment manufacturer's specification sheet. If the transmitter power is adjustable, indicate the maximum adjusted value in Watts. If the transmitter is capable of Automatic Power Control (APC), indicate the maximum APC value in Watts.

Radio Model Number
The model name or number of the radio model as specified by the manufacturer.

Select the GPS active repeater model number from the list of radios available in Spectrum Direct. The model number of these devices will have the prefix "(AR)". If the model number is not available (i.e. it is a new model), create a new radio data entry by using the "(AR) GPSRKL1 1.5G" model as an example. Note that code "(AR)" is required to be entered prior to the model number to indicate that the station is an "active repeater".

Antenna Model Number (Tx)
The antenna model employed for the transmitter.

For GPS active repeaters select the "omni generic" antenna model from the list of antennas available in Spectrum Direct;

Antenna Model Number (Rx)
The antenna model employed for the receiver.

Gain (Tx)
The gain of the transmitting antenna (in dB) relative to a half wave dipole (dBd). In case of a directional antenna, the gain is in the direction of maximum radiation. For frequencies above 890 MHz, the antenna gain is expressed relative to an isotropic radiator (dBi).

For GPS active repeaters the TX antenna gain (in dBi) is of the indoor transmitting antenna.

Gain (Rx)
The gain of the receiving antenna (in dB) relative to a half wave dipole (dBd). In case of a directional antenna, the gain is in the direction of maximum radiation. For frequencies above 890 MHz, the antenna gain is expressed relative to an isotropic radiator (dBi).

For GPS active repeaters the RX antenna gain (in dBi) is of the outdoor GPS receiving antenna (without considering the preamplifier).

Polarization (Tx)
The transmission antenna's polarization. Possible values are:

• Horizontal
• Vertical
• Horizontal or vertical selectable
• Circular, right
• Circular, left
• Circular
• Rotating
• Elliptical
• Linear
• Other
• Dual
• Mixed
• Slant, right
• Slant, left

For GPS active repeaters the TX/RX antenna polarization is Circular (right).

Polarization (Rx)
The receiving antenna's polarization. Possible values are:

• Horizontal
• Vertical
• Horizontal or vertical selectable
• Circular, right
• Circular, left
• Circular
• Rotating
• Elliptical
• Linear
• Other
• Dual
• Mixed
• Slant, right
• Slant, left

Azimuth (Tx)
Azimuth (in degrees from True North) of the transmitting antenna's direction of maximum radiation (lobe). For an omnidirectional radiation pattern, enter 0 degrees. To indicate an azimuth pointing true north, enter 360.0 degrees. For a bi-directional radiation pattern (two main lobes separated from each other by 180 degrees), enter the azimuth of one of the two lobes. It should be noted that the azimuth of the antenna lobe might not correspond to the physical azimuth of the antenna, especially in the case of bi-directional antennas.

For GPS active repeaters default the TX/RX antenna azimuth to 0 degrees.

Azimuth (Rx)
Azimuth (in degrees from True North) of the receiving antenna's direction of maximum radiation (lobe). For an omnidirectional radiation pattern, enter 0 degrees. To indicate an azimuth pointing true north, enter 360.0 degrees. For a bi-directional radiation pattern (two main lobes separated from each other by 180 degrees), enter the azimuth of one of the two lobes. It should be noted that the azimuth of the antenna lobe might not correspond to the physical azimuth of the antenna, especially in the case of bi-directional antennas.

Elevation Angle (Tx)
The transmission antenna's vertical elevation angle (beam tilt) with reference to horizontal ground in degrees.

For GPS active repeaters default the TX elevation angle to -90 degrees.

Elevation Angle (Rx)
The receiving antenna's vertical elevation angle (beam tilt) with reference to horizontal ground in degrees.

For GPS active repeaters default the RX elevation angle to +90 degrees.

Antenna Height Above Ground Level (Tx)
The transmission antenna's height above ground level, in metres.

For GPS active repeaters the height of the TX antenna (above ground level) is that of the indoor transmitting antenna.

Antenna Height Above Ground Level (Rx)
The receiving antenna's height above ground level, in metres.

For GPS active repeaters the height of the RX antenna (above ground level) is that of the outdoor GPS signal receiving antenna.

Unfaded Received Signal Level (dBW)
The unfaded signal strength received at the station's receiver, in dBW.

For GPS active repeaters default the unfaded received signal level to -130 dBm.

Total Propagation Availability (%)
The propagation reliability over a one-year period, calculated using the Vignant-Barnett method. (If another method of calculation is used, it should be indicated in the Other Information section of the Covering Letter.)

For GPS active repeaters default the propagation availability to 99%.

Is this frequency used for diversity?
Indicates if frequency diversity is used on the selected frequency.

Is angle diversity used?
Indicates if angular diversity is used on the selected frequency.

Diversity Antenna Model
If the selected frequency uses signal diversity, the antenna model used to provide diversity.

Diversity Antenna Height Above Ground Level (m)
If the selected frequency uses signal diversity, the height above ground level, in metres, of the antenna used to provide diversity.

Coordination with the United States
Indicates that international coordination is required.

For GPS active repeaters no international coordination is required.