RJELOOP1 *
Performance of Transceiving, single-turn, magloop antennas of various regular shapes.

RJELOOP2 *
Performance of Transceiving, single-turn, magloop antennas of rectangular shape.

RJELOOP3 *
Analysis of receiving, multi-turn, square, loop (or frame) antennas, ELF to HF.

HELICAL3 *
Continuously-loaded, helically-wound HF antennas, top-capacitance loaded with a rod.

TOROID *
Ferrite & iron-dust cored, toroidal coils. Dimensions, Core permeability, Turns, uH, pF, Freq.

VERTLOAD *
Base-fed vertical antennas, coil-loaded at any height, with coil design.

RADIOETH *
DC, power freq & RF characteristics of a single shallow-buried ground wire.

EARTHRES *
Ground electrodes. Resistance msmnts and predictions, rods, wires, plates, mats,

TANT136 *
LW & MW performance of small T-antennas above a system of buried ground radials.

ENDFEED *
HF performance of Inverted-L antennas above a system of buried ground radials.

LINEAR1 *
Models simple Class-AB, Push-pull, Bipolar Linear RF power amplifiers up to 30 MHz.

BALUN4 *
Design and performance of HF transmission line ferrite-core transformers, Z-ratio 4-to-1.

RJELINE1 *
Performance of openwire lines, Power freqs up to UHF, for any complex termination.

RJELINE2 *
Full analysis of balanced-twin lines, 20Hz-1GHz, for any complex termination.

COAXPAIR *
Full analysis of coaxial lines, Power freqs to UHF, for any complex termination.

RJELINE3 *
Full analysis of balanced lines with facilities for HF line xfmr design.

TRAPDIP *
Design and performance of 2-band trapped dipole antennas including trap design.

PHASENET *
Design of T & Pi phase-shifting networks for use with antenna arrays.

TPINET *
Design of T & Pi impedance-matching and phase-shifting networks.

SWR-FREQ *
Compare simple & folded dipoles. Input Z. Feedline VSWR vs freq. Bandwidth.

SOILSKIN *
Enter soil R and K characteristics. Display a table of skin depth vs frequency.

COAXRATE *
Power ratings of solid polythene coax cables vs dimensions and SWR. 0.3 to 3000 MHz.

ZL_ZIN *
Compute antenna feedpoint impedance from measured line input impedance, known Zo & length.

SOLNOID3 *
Single-layer, air-core coils of all proportions. Dimensions. Turns. Temp rise vs applied volts.

MAGLOOP4 *
Performance of regular-shaped magloop antennas versus height and type of ground.

PADMATCH *
T, Pi and L resistive matching-pad design using standard-range resistor values.

MIDLOAD *
Design of very short, centre-loaded dipoles above lossy ground. With coil design.

LCR *
Full analysis versus frequency of behaviour of an L+C+R parallel-tuned circuit.

SWRMETER *
Modelling, design, calibration & operation of HF SWR meters using a ferrite current xfmr.

LOADCOIL *
Design of short vertical antenna + loading coil. Slide coil up/down to maximise effncy.

PI_TANK *
Design Pi-match output cct for RF power amp. Effncy, harmonic suppression, phase shift.

ZOC_ZSC *
Calculate Trans-line Zo,L,C,R,G,dB,VF from open and closed input impedance measurements.

Pi_L_Net *
Design Pi and Pi-L output networks for RF Power amps. Effncy, harmonics, phase delay.

TETRODE1 *
Design of Class A, AB1, AB2 and C RF Power Amplifiers, using beam tetrodes or pentodes.

TOPHAT2 *
Short vertical antenna with Top-capacity-hat made with N radial wires. L-tuner values.

RJELINE4 *
Analysis of balanced-pair transmission lines. Line xfmrs with complex terminations.

T_TUNER *
Design & power efficiency, etc., of T-match tuning networks for transmitting antennas.

GRNDWAV4 *
Groundwave propagation. Field strength vs pathlength, terrain and frequency, VLF to HF.

DIFFRAC1 *
Radio propagation. Diffraction over a single obstruction. Tx output to Rx input.

DIFFRAC2 *
Radio propagation. Diffraction over two successive obstructions. Tx output to Rx input.

LINOSITE *
Simple Line-of-sight radio links. Approximate aperture, beamwidth, propagation loss etc.

MATCHSEC *
Impedance matching by inserting in antenna feedline a short section of different Zo.

BOTLOAD2 *
Inductance and bottom-loading coil design, or tune pF, for vertical or sloping antennas.

L_TUNER *
Calculate coil & capacitor values of an L-Network to match any pair of complex impedances.

WIRESKIN *
Skin resistance vs frequency of a single wire, an open-wire line and a dipole.

SELECT_1 *
Simple receiver preselector is a tapped parallel tuned circuit. Also coil design.

TWOCOILS *
Design & position two common-axis solenoids for desired coupling and mutual inductance.

DIPOLE3 *
A dipole at any height + balanced line + balun + coax line + L-match tuner L & C values.

DIPCAGE2 *
Cage dipole of N wires, resonant length, bandwidth vs SWR, end-effect, feedpoint impedance.

ADDALOAD *
Location and value of L or C loading component needed to resonate an antenna wire.

TRIODE1 *
Triode RF power amplifiers. Class-A, AB, C. Tuned tank or Pi-match output cct component values.

MULTILAY *
Design of multilayer coils wound in bobbins or other formers. 3 MHz and below.

WINDOM2 *
Performance of 1/2-wave horizontal dipole fed off-centre via vertical single-wire feedline.

FEEDPOWR *
Crude estimate of power radiated from coaxial line feeding 1/2-wave dipole without a balun.

COAXTRAP *
Design of antenna trap using length of coaxial line wound as solenoid on a coil former.

TWINTRAP *
Design of an antenna trap using length of twin-line wound on coil former. (Experimental)

OSCTRACK *
Superhet receivers. Optimum tracking of RF and oscillator tuned circuits. L & C values.

STUMATCH *
Match antenna input impedance to feedline with stub line xfmr. Balanced or coaxial lines.

STUBTUNE *
Match antenna input impedance to twin feeder with stub line xfmr. Includes xfmr efficiency.

LPF_HPF *
Simple L and C High and Low-pass filters. T and Pi Sections. Insertion loss vs freq.

BANDPAS1 *
Simple L and C bandpass filters. T and Pi Sections. Insertion loss vs freq.

INV_VEE *
Performance of resonant 1/2-wave Inverted-Vee and Dipole antennas including feedlines.

RHO_SWR *
Exact values of Rho and SWR on mismatched lines. Compare with measured values.

WHIP_1 *
Signal strength received on whip antenna + un-un transformer + coax line + receiver.

TWOHOPS *
Skywave Trigonometry and insight into how losses are proportioned along a radio path.

HARM_GEN *
Simple single-transistor harmonic generator. Performance and behaviour vs frequency.

R_X_SWR *
Feedpoint Impedance and SWR of an antenna in the vicinity of resonance.

CHOKEBAL *
Design and performance of a choke balun in conjunction with feedline and antenna.

BALCHOKE *
Better, recommended, version of program ChokeBal above. Changes in input data.

XTL_SET *
Design, performance, of crystal set, or preselector, using two coupled tuned circuits. From Tx to phones.

NOTATRAP *
Design of a two-band antenna loaded with a coil + capacitor parallel tuned circuit.

TRAP3 *
Trap design and impedance vs frequency of an antenna trap.

SELFRES3 *
Performance of solenoid-wound choke coils, particularly coaxial chokes in antenna feedlines.

RJELOOP4 *
Multiband, horizontal loop antennas with any feedline, choke balun and L-network tuner.

COAXTUNE *
Using 1/4-wavelength of coaxial line as a tuned circuit. Tuning capacitor values.

TWINTUNE *
Using 1/4-wavelength of balanced-twin line as a tuned circuit. Tuning capacitor values.

VERTUNE *
Performance of vertical 1/2-wave antennas with LC tuned Z-matching circuit. Coil design.

TUNEHALF *
Impedance matching circuit for high impedance, end-fed, antennas, Plus coil design.

SWRARGUE *
Behaviour of a trans line plus an antenna with an SWR meter at each end of the line.

METALFLM *
Frequency response of wire-end resistors, small dummy loads and VHF chokes.

QL_QC *
Analysis of behaviour of parallel tuned circuit, including Q of both L and C.

TANTENNA *
Analysis of behaviour of a T-antenna. Zin of top. Zin of vertical. Efficiency.

L_NETWK *
L-matching network. Calculate load impedance, R+jX, from coil and capacitor values,

HYPERGEO *
Hypergeometric probability distribution. 2-by-2 Contingency Table calculations.

C_POISE *
Performance of coil-loaded antenna counterpoise or artificial ground.

OPANGLE3 *
Choose operating angles for Class-B and C RF power amplifiers + Plate circuit analysis.

CONNECT *
Degradation in system performance due to presence of a connector of incorrect Zo.

COILINE *
Behaviour of a single-layer solenoid coil as a transmission line at HF.

TWOLINES *
Input Z of two cascaded lines with a load. Design of transline transformer.

TRANCOIL *
A coil as transline. Values of primary and secondary constants. Performance data.

TRANCO_1 *
A solenoid as a transmission line. A 1/4-wave helical antenna. A new perspective.

INPUT_Z *
Input impedance of coaxial transmission line terminated with a load. SWR & line loss.

LINE_ZIN *
Input impedance of balanced-twin transmission line terminated with a load. SWR & line loss.

COAX_VLF *
Behaviour of coaxial transmission lines at low freqs. Zo,Zin,VF,RC,SWR.

SKYTRIG *
Skywave trigonometry. Input elevation angle, layer height and Fcrit. Calculate ground path distance, field strength and MUF.

PROPGATE *
Propagation over line-of-sight and multi-hop ionospheric paths. Path loss, field strength and S-meter readings.

HELIX_2 *
Very short, helically wound, monopole antennas. Length, diameter, number of turns.

LINELEN *
Performance of dipole + transmission line + balun followed by a tuner.

L_V_D *
Calculate input impedance of Inverted-L, Vertical, Dipole antennas. Plus coil design.

RADIAL_3 *
Choosing length and number of a set of shallow-buried ground wires. With vertical antenna.