**PROGRAMY PRO RADIOAMATÉRY – 2. ÈÁST**

**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.
RADIALS2 *
Performance of a set of shallow-buried ground radials considered as
transmission lines.
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.**