↑ Compare DR2W propagation tool with VOACAP

Edited by Doron Tal, 4X4XM

VOACAP and DR2W are both popular tools used in radio propagation analysis, but they have some key differences. Here's a brief comparison:

Calculation Method: VOACAP and DR2W, both employs smoothed sunspot counts statistical functions. Their model was never designed to predict current ionospheric conditions, near-real-time forecasts, or even day-of-the-month predictions.

Input Parameters: Both DR2W and VOACAP require the input of parameters like transmitter power, antenna gain, frequency, and location of both transmitter and receiver.

Output: Both tools provide similar types of output, including maps of predicted signal strength and signal-to-noise ratio (SNR), and graphs of the predicted performance of various propagation modes (such as ground wave, sky wave, and ionospheric scatter). However, DR2W also includes a 3D visualization of predicted signal strength that can be useful for visualizing the effects of terrain.

A map predicting signal strength and signal-to-noise ratio (SNR)

Ease of Use: DR2W has a more user-friendly interface compared to VOACAP, and it's generally easier to use. However, VOACAP provides more flexibility and customization options for advanced users.

VOACAP Online for Ham Radio

Accuracy: VOACAP and DR2W both have their strengths and weaknesses, and the accuracy of the predictions can vary depending on the specific situation. In general, VOACAP is considered to be more accurate for longer distance predictions, while DR2W is apparently better for shorter distance predictions.

In summary, both DR2W and VOACAP are useful tools for predicting radio propagation, and the choice of which tool to use will depend on the specific situation and the user's needs and preferences.

You may find more additional information in the main webpage, here. See also an index for HF Radio Propagarion.