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Report Style: Comm Link - HF

This report contains link information and VOACAP link information for a high-frequency communications system.

Data Providers:Link Information , Link Information - VOACAP

Availability: Reports | Dynamic Displays

Column Listing

Column	Column Name	Data Prv	Element	Type	Dimension	Description
1	Time	Link Information	Time	Real Number or Text	Date	Time.
2	Xmtr Power	Link Information	Xmtr Power	Real Number	Power	The RF power output of the transmitter as measured at the input to the antenna. This is a user selectable value.
3	Skywave Transmit Azimuth	Link Information - VOACAP	Skywave Transmit Azimuth	Real Number or Text	Angle	Transmit azimuth angle of the Skywave signal path.
4	Skywave Transmit Elevation	Link Information - VOACAP	Skywave Transmit Elevation	Real Number or Text	Angle	Transmit elevation angle of the Skywave signal path.
5	Skywave Transmit Gain	Link Information - VOACAP	Skywave Transmit Gain	Real Number	Ratio	Transmit gain in the Skywave direction.
6	EIRP	Link Information	EIRP	Real Number	Power	The effective isotropic radiated power in the link direction. This value is the product of the transmitter power and the transmitter gain in the link direction with the inclusion of user defined post transmit gains and losses.
7	Skywave Mode	Link Information - VOACAP	Skywave Mode	Text	Unitless	The most reliable mode of signal propagation. See MODE for more detail.
8	Skywave Range	Link Information - VOACAP	Skywave Range	Real Number	Distance	Range of the Skywave signal path
9	Skywave Loss	Link Information - VOACAP	Skywave Loss	Real Number	Ratio	propagation loss for the Skywave signal path (doesn’t include FSL)
10	Skywave Free Space Loss	Link Information - VOACAP	Skywave Free Space Loss	Real Number	Ratio	The free space loss for the range associated with the Skywave signal path.
11	Prop Loss	Link Information	Prop Loss	Real Number	Ratio	The total propagation loss computed across all enabled propagation models.
12	Skywave Prop Delay	Link Information - VOACAP	Skywave Prop Delay	Real Number	SmallTime	Propagation delay for the Skywave signal path
13	Skywave Receive Azimuth	Link Information - VOACAP	Skywave Receive Azimuth	Real Number or Text	Angle	Receive azimuth angle of the Skywave signal path.
14	Skywave Receive Elevation	Link Information - VOACAP	Skywave Receive Elevation	Real Number or Text	Angle	Receive elevation angle of the Skywave signal path.
15	Skywave Receive Gain	Link Information - VOACAP	Skywave Receive Gain	Real Number	Ratio	Receive antenna gain in the Skywave direction.
16	Rcvd. Frequency	Link Information	Rcvd. Frequency	Real Number	Frequency	The received frequency is the frequency that the receiver is tuned to in order to communicate with the transmitter. This frequency may be auto-tracked or entered by the user in the receiver properties.
17	Freq. Doppler Shift	Link Information	Freq. Doppler Shift	Real Number	Frequency	The frequency Doppler shift is the offset in frequency between the transmitted frequency and the received frequency. This value is zero for auto tracked receivers.
18	Bandwidth Overlap	Link Information	Bandwidth Overlap	Real Number	Ratio	The bandwidth overlap factor is the fraction (between 0 and 1) of transmitted power which is contained within the receiver's bandwidth. The amount of power received by the receiver is equal to the transmitted EIRP multiplied by the bandwidth overlap factor and taking into account any propagation losses.
19	Rcvd. Iso. Power	Link Information	Rcvd. Iso. Power	Real Number	Power	Received isotropic power is the power at the receiver before the pre-receive gains/losses and the receiver antenna gain added (in dBW). It is equal to the EIRP with all the channel losses as well as the bandwidth overlap applied.
20	C/No	Link Information	C/No	Real Number	SpectralDensity	The carrier to noise density ratio (C/No) where C is the carrier power and No = kT (Boltzmann's constant x system temperature) is the noise density. It is equivalent to C/N with a normalized Bandwidth (B=1).
21	C/N	Link Information	C/N	Real Number	Ratio	The carrier to noise ratio (C/N) where C is the carrier power and N = kTB (Boltzmann's constant x system temperature x bandwidth) is the noise power.
22	Eb/No	Link Information	Eb/No	Real Number	Ratio	The energy per bit to noise ratio (Eb/No) where Eb is the energy per bit and No = kT (Boltzmann's constant * system temperature).
23	BER	Link Information	BER	Real Number	Unitless	Bit Error Rate (BER) is the probability that a bit is in error (i.e. a zero is transmitted but a one is received). The BER is the number of bits in error divided by the total number of bits sent. STK uses table lookup from a .mod file to extract a BER given an Eb/No. STK interpolates the table as necessary to determine the appropriate bit error rate for a particular bit energy level. If the bit energy is smaller than the first value in the table, the bit error rate for the first value is used. If the bit energy is larger than the last value in the table, a default bit error rate of 1.0e-30 is used to indicate no errors.