# Software for HP calculators

Binary objects for download are tested on HP50g, and should also work on HP-49*. The text format should load and run on HP-48*.

# VSWR

Directory object containing a set of VSWR related functions written in User RPL.

 %%HP: T(3)A(R)F(.); DIR FRLVSWR \<< FRLrho rVSWR \>> LOVSWR \<< LOrho rVSWR \>> VLVSWR \<< SWAP Vrho SWAP rLrho rVSWR \>> rLrho \<< 10. / ALOG * DUP IF 1. > THEN DROP "INVALID rho" DOERR END \->NUM \>> LOrho \<< LOGAMMA ABS \>> LOGAMMA \<< DUP 3 ROLLD SWAP DUP 4 ROLLD + 3 ROLLD - / INV \->NUM \>> FRLrho \<< 3 ROLLD / \v/ INV SWAP rLrho \>> Vrho \<< DUP 1. + SWAP 1. - SWAP / \->NUM \>> rVSWR \<< DUP 1. + SWAP 1. - ABS / \->NUM \>> FRrho \<< / \v/ INV \->NUM \>> SLLOSS \<< DUP 3. ROLLD 2. / VLVSWR SWAP MLLOSS \>> MLLOSS \<< SWAP DUP 2. * SWAP SQ 1. + SWAP / * \>> LLLOSS \<< DUP 3. ROLLD -2. / VLVSWR SWAP MLLOSS \>> END

## FRLVSWR

Calculates VSWR at a remote point.

 Argument Notes Forward Power Watts Reverse Power Watts Loss from the point of measurement to the remote point dB, +ve in load direction, -ve in source direction

## LOVSWR

Calculates VSWR.

 Argument Notes Zl Complex load impedance Zo Complex characteristic impedance

## VLVSWR

Calculates VSWR at a remote point.

 Argument Notes VSWR Loss from the point of measurement to the remote point dB, +ve in load direction, -ve in source direction

## rLrho

Calculates rho (magnitude of the complex reflection coefficient) at a remote point.

 Argument Notes rho magnitude of complex reflection coefficient Loss from the point of measurement to the remote point dB, +ve in load direction, -ve in source direction

## LOrho

Calculates rho (magnitude of the complex reflection coefficient).

 Argument Notes Zl Complex load impedance Zo Complex characteristic impedance

## LOGAMMA

Calculates Gamma (complex reflection coefficient).

 Argument Notes Zl Complex load impedance Zo Complex characteristic impedance

## FRLrho

Calculates rho (magnitude of the complex reflection coefficient) at a remote point.

 Argument Notes Forward Power Watts Reverse Power Watts Loss from the point of measurement to the remote point dB, +ve in load direction, -ve in source direction

## Vrho

Calculates rho (magnitude of the complex reflection coefficient).

 Argument Notes VSWR

## rVSWR

Calculates VSWR.

 Argument Notes rho magnitude of complex reflection coefficient

## FRrho

Calculates rho (magnitude of the complex reflection coefficient).

 Argument Notes Forward Power Watts Reverse Power Watts

## SLLOSS

Calculates approximate line loss under mismatch.

 Argument Notes Source end VSWR Loss of line section dB

## MLLOSS

Calculates approximate line loss under mismatch.

 Argument Notes Midpoint VSWR Loss of line section dB

## LLLOSS

Calculates approximate line loss under mismatch.

 Argument Notes Load end VSWR Loss of line section dB