(42S) - FRECR - Cutoff Frequency for rectangular waveguides

[Emilio Abud Filho]

Dear All

Please, find attached a simple code and documentation for solving Cutoff Frequency for rectangular waveguides; (to be used with "Solver" HP-42S built-in application).

Attachments:

- Program documentation, including example, math equations, how to use explanations, source code, etc; (xlsx and pdf)

- RAW format file (zip)

Code:

00 { 76-Byte Prgm }
01▸LBL "FRECR"
02 MVAR "FREC"
03 MVAR "A"
04 MVAR "B"
05 MVAR "M"
06 MVAR "N"
07 MVAR "Er"
08 MVAR "Ur"
09 RCL "M"
10 RCL÷ "A"
11 X↑2
12 RCL "N"
13 RCL÷ "B"
14 X↑2
15 +
16 SQRT
17 RCL "Er"
18 RCL "Ur"
19 ×
20 SQRT
21 ÷
22 1499ᴇ5
23 ×
24 RCL- "FREC"
25 END

Kind regards,