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+--- Thread: (42S) FRIIS - Solving Friis radio transmission equation (/thread-19067.html)
(42S) FRIIS - Solving Friis radio transmission equation - Emilio Abud Filho - 11-02-2022 12:41 PM
Dear All
Program to solve the "Friis transmission equation", which calculates the power found at the receiving antenna port, as a function of the transmitted power, antenna gains and the distance between them; (to be used with "HP Solver" built-in application).
Attachments:
- Program documentation, including example, math equations, how to use explanations, source code, etc; (xlsx and pdf)
- RAW format file (zip)
- An up-dated documentation form (v5)
Code:
00 { 93-Byte Prgm }
01 LBL "FRIIS"
02 MVAR "PTX"
03 MVAR "PRX"
04 MVAR "GTX"
05 MVAR "GRX"
06 MVAR "FREQ"
07 MVAR "DIST"
08 RCL "PTX"
09 RCL+ "GTX"
10 RCL+ "GRX"
11 23857325.9695
12 RCL÷ "DIST"
13 RCL÷ "FREQ"
14 LOG
15 20
16 ×
17 +
18 RCL- "PRX"
19 ENDWarm regards,