Antennas

Antenna Performance Specialties APS-9B
Antenna Performance Specialties APS-13
Antennacraft FM6
Antennacraft FM10
Antennacraft FM13
Channel Master Stereo Probe 9
Denny's Antenna Service FM 2500HD
Finco FM-4
Finco FM-5
InnovAntennas FMDX-9
InnovAntennas 88-DES-14
Stellar Labs 30-2460
Triax FM 5
Triax FM 8S
Winegard HD-6000
Winegard HD6055P
Winegard HD6065P
Körner 9.2
Körner 15.12
Körner 19.3
Maximum-Gain Narrowband Yagi
High-Performance Yagis for 88–92 MHz
Small Five-Element Yagi
Home Depot Yagi
Metric Yagis
Tiny-Backlobe Log-Yagi
Vertically Polarized Yagi Stack
Circularly Polarized Cubical Quads
Circularly Polarized Crossed Yagis
Circularly Polarized Loop
Circularly Polarized Rabbit Ears
Elliptically Polarized Tilted Dipole
Omnidirectional Antennas
Parasitic Wire
Forward Gain & F/R Curves
88–108 MHz Baluns & Chokes
Antenna Notes

Stereo

SSB Stereo Subchannel
Alternative Stereo Decoding Methods
Changing Hi-Blend to Flat Blend
Stereo S/N Penalty

HD Radio

HD Radio Self-Noise
HD Radio Self-Noise Levels
IF Filters and HD Radio Self-Noise
Postdetection Filters for HD Radio Signals
Harmonic Cancellers for HD Radio Signals
HD Radio Time & Level Alignment
HD Radio Audio Spectra

Tuners

Sony XDR-F1HD
Sangean HDT-1
Sangean HDT-1X
Kenwood KT-880D
Technics ST-9030
Carver TX-11b
Pioneer F-90

Circuits

RF Preamps
Eliminating Front-End Overload with RF AGC
Improving Selectivity with IF AGC
Accommodating Offset IF Filters
LC IF Filter
Simple IF Amplifier
Quadrature Multipath Monitor
Deemphasis Converter

Measurements

Updating IEEE 185-1975
IEEE 185-1975 Bandpass Filter
Bob & Ken's Spectrum Inversion Trick
Measuring Noise Figure without a Noise Source
Simple RF Noise Source
Refurbishing the Wavetek SAM for 88–108 MHz
Updating the Sound Technology 1000A
Swept Front-End Alignment
Alternative IF/Detector Alignment
Modulation-Induced Noise
Axial Ratio Measurements
Matching 50Ω to 75Ω
Relating dBµ and dBf
A-Weighted S/N
Measurement Utilities

Beyond 88–108 MHz

How Much Distortion Can You Tolerate?
Vacuum Tube Radio Circuits
Busting a Pileup
TV Antennas
DAB Yagis
Simple Wi-Fi Yagi
Enhanced OWA
1926 Yagi-Uda Antenna
HF Ground Constants
Stratified Ground
Ground Probe Calculator
Hairpin Match Calculator
Coil Inductance and Q Calculator
Optimizing Antenna Models with Coils
NanoVNA Port Impedance