OwenDuffy.net
VK1OD Theme page: Transmitters
Ameritron AL811H tube selection
RF Power Amplifier Tube Performance Computer
TS2000 audio setup - May 2008
TS2000 audio setup - June 2008
Using audio spectrum analysis for end to end linearity testing of an SSB transmitter - receiver
Setup of FM tx for broadcast relay from digital audio source
AFSK - effect of overload of tx audio input
Some thoughts on filtering a PWM amplitude modulator
Legendary microphones for ham radio
Optimum length of exciter - HPA interconnect cable
Feidaxin FD-460UH report
Ameritron AL811H tube selection
RF Power Amplifier Tube Performance Computer
IC-7000 evaluation
Amplifier Tuning Chart
Amateur Radio Log Sheet
Amateur Radio application of Frequency Modulation
Linked repeaters - siqnal quality
Feeding multiband dipoles with open wire feeder and balun
Spectral content of anode current in Class B/AB RF amplifier
Envelope Distortion in SSB AM
Collins 30L-1 and AM
Link coupling transformation ratio
Power rating of the BLF278 in class AB
Power rating of the BLF248 in class AB
Thoughts on improvements to the PA0V 144MHz BLF278 amplifier output circuit
Transmit ALC and RF Power Amplifiers
ATU efficiency – an example
Tapping an air cored RF inductor
Yaesu FL2100Z
DTR - PTT interface adapter
Designing the operating point for a grounded grid Triode Class B RF amplifier
Designing with the GS31B
Calculate initial load line of valve RF amplifier
Pi coupling a single ended valve RF Power Amplifier
Designing with the GI7BT
Spoiling Class B
Filament management in Amateur Radio applications
APRS AFSK on VHF
Setup of an FM AFSK transmitter
Effect of reduced drive on Class B amplifier efficiency
Interpretation of transmitting triode valve data sheets for RF power amplifiers
137.7kHz oscillator
Is Zs of a HF ham tx typically 50+j0?
A test of Zs on an IC7000
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