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(42S) FRIIS - Solving Friis radio transmission equation
11-02-2022, 12:41 PM (This post was last modified: 12-15-2022 02:55 AM by Gene.)
Post: #1
(42S) FRIIS - Solving Friis radio transmission equation
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 END

Warm regards,


Attached File(s)
.xlsx  HP-42S Program Documentation Form Template_v5.xlsx (Size: 25.02 KB / Downloads: 4)
.zip  FRIISraw.zip (Size: 201 bytes / Downloads: 4)
.xlsx  HP-42S Program Documentation Form - FRIIS_v100.xlsx (Size: 28.67 KB / Downloads: 7)
.pdf  HP-42S Program Documentation Form - FRIIS_v100.pdf (Size: 189.79 KB / Downloads: 12)

Emilio Abud Filho
Mobile: +55 (41) 9 9172-1201
e.abud@uol.com.br
emilio.abud.filho@gmail.com
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