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BH1RBG RF Lab
  • Ham Radio
    • Antenna: Your first Antenna
    • 10M:28.6Mhz FM transmiter
    • 27Mhz: AM RX/TX Experiment
    • AM: AM band transmiter by Techlib
    • HF: 0.5W Linear push pull PA
    • DC: Polyakov (I)
    • DC: Polyakov (II) Improvise
    • DC: Polyakov (III) Audio Again
    • FM Synchrodyne
    • Heterodyne: BJT AM receiver
    • Heterodyne: Build A Traditional Radio
    • Rflex: with voltage doubler detector
    • Regen I: Amazing Regen Receiver
    • Regen II: High Performance Rig
    • Regen III: A Journey of BJT Regen
    • SuperRegen: AirCraft band receiver
    • Super Regen: Make it work
    • TRF I: Origin of Receiver
    • TRF II: infinity 0V2
    • TRF III: Long Wire
    • TRF IV: Stabilize RF Amplifier
    • Crystal Radio (I)
    • Start From Crystal (II)
    • Crystal Set Season (III)
    • DYNALEC Earphone Repair
    • Make A Crystal Headphone
  • Experiment
    • Audio: 2 stages Transformer Audio PA
    • Audio: Discrete Power Amplifer
    • Audio: low distortion wein bridge
    • Audio Preamplifier
    • Audio: Simple power amplifier
    • Audio: wein sine bridge
    • Audio: Push Pull PA
    • Green Bobin Filter
    • Mixer: JFET active mixer
    • IF: BJT 2 Stage with AGC
    • AMP: Simple RF Amplifier
    • Antenna: JFET active antenna
    • CXO: CXO/overtone for TX
    • CXO: Low distortion oscillator
    • CXO: Tune 5th Butler Overtone VHF Oscillator
    • Fail: CB Negistor-not work
    • Miller negative resistance Oscillator
    • Several Dipper Oscillators
    • VFO Series-E oscillator
    • Oscillator amplitude stabilization
    • Ramp: Versatile ramp generator
    • Sweep: Build new topology signal source
    • Sweep: simple Hartley Sweeper
    • VCO: Franklin 80Mhz-180Mhz
    • VCO: AM Hartley LO
    • VCO: CB colpitts 270Mhz-500Mhz
    • VCO: Improved Series E VCO
    • VCO: linearity factor
    • VCO: Negative resistance VCO
    • VCO: Negative VCO Linearity
    • VCO: Seiler 80Mhz-300Mhz
    • VCO: Ultra Negtive 100kHz-100Mhz
    • VCO: Vackar 30Mhz-240Mhz
    • VFO: ultra-audion LF to VHF
    • VFO: AM band Oscillator
    • VFO: hybrid feedback oscillator
  • Instrument
    • Attenuator: 50ohm/81dB 1dB step
    • Attenuator: 600ohm 1dB Step
    • Attenuator: Serebriakova 13-40dB
    • Audio: low THD two tone generator
    • A Simple ESR Meter
    • SWR: the Good HF QRP SWR
    • Bridge: RLB VHF
    • Power Meter: AD8307
    • Power Meter: Calibrator
    • Thermistor RF Power Meter
    • Log Sweeper (I)
    • Log Sweeper (II)
    • Log Sweeper (III)
    • Ramp generator (I)
    • Ramp generator (II)
    • Manual sweeper source
    • Sweeper source (I)
    • SA: What is SA (SA demo prj)
    • PC Oscope/SA
    • Crystal Checker
    • JFET Bias tool box
    • Bias: favorite BJT/JFET bias guide
    • LiPo Balance charger
    • LiPo: Simple charger
    • NICD Discharger
    • Servo constant current load
    • Supply: dual Li-Po 7.2V-8.2V
  • Deep RF
    • Antenna: Helical Ant and L-match
    • Antenna: before make receiver
    • Audio PA
    • IF.455K: Design and Improvement
    • IF.455K: Gain Vs Stable
    • IF.455K:OLD MW Radio BJT IF
    • IF.455K:why tap stabilize the IF Amp
    • DBM In The Frequency generator
    • PA: 27Mhz FM TX Chain Design
    • PA: Exploring PA
    • PA: TX chain PA to Antenna
    • Misread CB Amplifier
    • Run into Wide-Band Buffer/Amplifiers
    • Noise Figure Mess
    • Core: evaluate unknown core
    • RF choke: dig SRF
    • RF Practice: better to know
  • Laboratory
    • Fixing GH2462 Directional Power meter
    • Tek465 Auto Mode Analysis
    • Tek CRT DC Restorer Circuits
    • Tektronix 4xx Power Supply
    • Fix One Rear Tek-465
    • Fix Another Tek 465
    • Tek 475 Restoration
    • Restoration Tek 485
    • Restoration An Tektronix 464
    • HP8640B -20V Power Supply Down
    • Repair the HP8558 SA
    • HP 8565 Spectrum Analyzer Repair
    • Tektronix 495P Fix and Alignment
    • Restoration One 465B
    • Restoration HP8662A
    • Tek 485 Hi-z Attenuator
    • HP3312 Restoration
    • Restoration of HP-21 alike Cavity Oscillators
    • Memory U019 Frequency Selective Volmeter
    • DH1718 Power Supply
    • Boonton 92B
    • Tektronix 465B B sweep Fix
  • Digital&Logic
    • Get to Know An Old VGA Card
    • Frequency Counter
  • Home Craft
    • Air Coil 4.5 Turns example
    • experimental board
    • Fuse based dead bug
    • Prototype Board by Banana plug
  • RF Calculators
    • Heterodyne tracking calculator
  • 3D Printing
    • Fix:under extrusion:long move or retraction
    • OpenRC truggy Improvement
    • 3D printer make RF fun and cool
  • Collection
    • Microphones
    • Transistors
    • IF Cans
BH1RBG RF Lab
  • Ham Radio
    • Antenna: Your first Antenna
    • 10M:28.6Mhz FM transmiter
    • 27Mhz: AM RX/TX Experiment
    • AM: AM band transmiter by Techlib
    • HF: 0.5W Linear push pull PA
    • DC: Polyakov (I)
    • DC: Polyakov (II) Improvise
    • DC: Polyakov (III) Audio Again
    • FM Synchrodyne
    • Heterodyne: BJT AM receiver
    • Heterodyne: Build A Traditional Radio
    • Rflex: with voltage doubler detector
    • Regen I: Amazing Regen Receiver
    • Regen II: High Performance Rig
    • Regen III: A Journey of BJT Regen
    • SuperRegen: AirCraft band receiver
    • Super Regen: Make it work
    • TRF I: Origin of Receiver
    • TRF II: infinity 0V2
    • TRF III: Long Wire
    • TRF IV: Stabilize RF Amplifier
    • Crystal Radio (I)
    • Start From Crystal (II)
    • Crystal Set Season (III)
    • DYNALEC Earphone Repair
    • Make A Crystal Headphone
  • Experiment
    • Audio: 2 stages Transformer Audio PA
    • Audio: Discrete Power Amplifer
    • Audio: low distortion wein bridge
    • Audio Preamplifier
    • Audio: Simple power amplifier
    • Audio: wein sine bridge
    • Audio: Push Pull PA
    • Green Bobin Filter
    • Mixer: JFET active mixer
    • IF: BJT 2 Stage with AGC
    • AMP: Simple RF Amplifier
    • Antenna: JFET active antenna
    • CXO: CXO/overtone for TX
    • CXO: Low distortion oscillator
    • CXO: Tune 5th Butler Overtone VHF Oscillator
    • Fail: CB Negistor-not work
    • Miller negative resistance Oscillator
    • Several Dipper Oscillators
    • VFO Series-E oscillator
    • Oscillator amplitude stabilization
    • Ramp: Versatile ramp generator
    • Sweep: Build new topology signal source
    • Sweep: simple Hartley Sweeper
    • VCO: Franklin 80Mhz-180Mhz
    • VCO: AM Hartley LO
    • VCO: CB colpitts 270Mhz-500Mhz
    • VCO: Improved Series E VCO
    • VCO: linearity factor
    • VCO: Negative resistance VCO
    • VCO: Negative VCO Linearity
    • VCO: Seiler 80Mhz-300Mhz
    • VCO: Ultra Negtive 100kHz-100Mhz
    • VCO: Vackar 30Mhz-240Mhz
    • VFO: ultra-audion LF to VHF
    • VFO: AM band Oscillator
    • VFO: hybrid feedback oscillator
  • Instrument
    • Attenuator: 50ohm/81dB 1dB step
    • Attenuator: 600ohm 1dB Step
    • Attenuator: Serebriakova 13-40dB
    • Audio: low THD two tone generator
    • A Simple ESR Meter
    • SWR: the Good HF QRP SWR
    • Bridge: RLB VHF
    • Power Meter: AD8307
    • Power Meter: Calibrator
    • Thermistor RF Power Meter
    • Log Sweeper (I)
    • Log Sweeper (II)
    • Log Sweeper (III)
    • Ramp generator (I)
    • Ramp generator (II)
    • Manual sweeper source
    • Sweeper source (I)
    • SA: What is SA (SA demo prj)
    • PC Oscope/SA
    • Crystal Checker
    • JFET Bias tool box
    • Bias: favorite BJT/JFET bias guide
    • LiPo Balance charger
    • LiPo: Simple charger
    • NICD Discharger
    • Servo constant current load
    • Supply: dual Li-Po 7.2V-8.2V
  • Deep RF
    • Antenna: Helical Ant and L-match
    • Antenna: before make receiver
    • Audio PA
    • IF.455K: Design and Improvement
    • IF.455K: Gain Vs Stable
    • IF.455K:OLD MW Radio BJT IF
    • IF.455K:why tap stabilize the IF Amp
    • DBM In The Frequency generator
    • PA: 27Mhz FM TX Chain Design
    • PA: Exploring PA
    • PA: TX chain PA to Antenna
    • Misread CB Amplifier
    • Run into Wide-Band Buffer/Amplifiers
    • Noise Figure Mess
    • Core: evaluate unknown core
    • RF choke: dig SRF
    • RF Practice: better to know
  • Laboratory
    • Fixing GH2462 Directional Power meter
    • Tek465 Auto Mode Analysis
    • Tek CRT DC Restorer Circuits
    • Tektronix 4xx Power Supply
    • Fix One Rear Tek-465
    • Fix Another Tek 465
    • Tek 475 Restoration
    • Restoration Tek 485
    • Restoration An Tektronix 464
    • HP8640B -20V Power Supply Down
    • Repair the HP8558 SA
    • HP 8565 Spectrum Analyzer Repair
    • Tektronix 495P Fix and Alignment
    • Restoration One 465B
    • Restoration HP8662A
    • Tek 485 Hi-z Attenuator
    • HP3312 Restoration
    • Restoration of HP-21 alike Cavity Oscillators
    • Memory U019 Frequency Selective Volmeter
    • DH1718 Power Supply
    • Boonton 92B
    • Tektronix 465B B sweep Fix
  • Digital&Logic
    • Get to Know An Old VGA Card
    • Frequency Counter
  • Home Craft
    • Air Coil 4.5 Turns example
    • experimental board
    • Fuse based dead bug
    • Prototype Board by Banana plug
  • RF Calculators
    • Heterodyne tracking calculator
  • 3D Printing
    • Fix:under extrusion:long move or retraction
    • OpenRC truggy Improvement
    • 3D printer make RF fun and cool
  • Collection
    • Microphones
    • Transistors
    • IF Cans
  • More
    • Ham Radio
      • Antenna: Your first Antenna
      • 10M:28.6Mhz FM transmiter
      • 27Mhz: AM RX/TX Experiment
      • AM: AM band transmiter by Techlib
      • HF: 0.5W Linear push pull PA
      • DC: Polyakov (I)
      • DC: Polyakov (II) Improvise
      • DC: Polyakov (III) Audio Again
      • FM Synchrodyne
      • Heterodyne: BJT AM receiver
      • Heterodyne: Build A Traditional Radio
      • Rflex: with voltage doubler detector
      • Regen I: Amazing Regen Receiver
      • Regen II: High Performance Rig
      • Regen III: A Journey of BJT Regen
      • SuperRegen: AirCraft band receiver
      • Super Regen: Make it work
      • TRF I: Origin of Receiver
      • TRF II: infinity 0V2
      • TRF III: Long Wire
      • TRF IV: Stabilize RF Amplifier
      • Crystal Radio (I)
      • Start From Crystal (II)
      • Crystal Set Season (III)
      • DYNALEC Earphone Repair
      • Make A Crystal Headphone
    • Experiment
      • Audio: 2 stages Transformer Audio PA
      • Audio: Discrete Power Amplifer
      • Audio: low distortion wein bridge
      • Audio Preamplifier
      • Audio: Simple power amplifier
      • Audio: wein sine bridge
      • Audio: Push Pull PA
      • Green Bobin Filter
      • Mixer: JFET active mixer
      • IF: BJT 2 Stage with AGC
      • AMP: Simple RF Amplifier
      • Antenna: JFET active antenna
      • CXO: CXO/overtone for TX
      • CXO: Low distortion oscillator
      • CXO: Tune 5th Butler Overtone VHF Oscillator
      • Fail: CB Negistor-not work
      • Miller negative resistance Oscillator
      • Several Dipper Oscillators
      • VFO Series-E oscillator
      • Oscillator amplitude stabilization
      • Ramp: Versatile ramp generator
      • Sweep: Build new topology signal source
      • Sweep: simple Hartley Sweeper
      • VCO: Franklin 80Mhz-180Mhz
      • VCO: AM Hartley LO
      • VCO: CB colpitts 270Mhz-500Mhz
      • VCO: Improved Series E VCO
      • VCO: linearity factor
      • VCO: Negative resistance VCO
      • VCO: Negative VCO Linearity
      • VCO: Seiler 80Mhz-300Mhz
      • VCO: Ultra Negtive 100kHz-100Mhz
      • VCO: Vackar 30Mhz-240Mhz
      • VFO: ultra-audion LF to VHF
      • VFO: AM band Oscillator
      • VFO: hybrid feedback oscillator
    • Instrument
      • Attenuator: 50ohm/81dB 1dB step
      • Attenuator: 600ohm 1dB Step
      • Attenuator: Serebriakova 13-40dB
      • Audio: low THD two tone generator
      • A Simple ESR Meter
      • SWR: the Good HF QRP SWR
      • Bridge: RLB VHF
      • Power Meter: AD8307
      • Power Meter: Calibrator
      • Thermistor RF Power Meter
      • Log Sweeper (I)
      • Log Sweeper (II)
      • Log Sweeper (III)
      • Ramp generator (I)
      • Ramp generator (II)
      • Manual sweeper source
      • Sweeper source (I)
      • SA: What is SA (SA demo prj)
      • PC Oscope/SA
      • Crystal Checker
      • JFET Bias tool box
      • Bias: favorite BJT/JFET bias guide
      • LiPo Balance charger
      • LiPo: Simple charger
      • NICD Discharger
      • Servo constant current load
      • Supply: dual Li-Po 7.2V-8.2V
    • Deep RF
      • Antenna: Helical Ant and L-match
      • Antenna: before make receiver
      • Audio PA
      • IF.455K: Design and Improvement
      • IF.455K: Gain Vs Stable
      • IF.455K:OLD MW Radio BJT IF
      • IF.455K:why tap stabilize the IF Amp
      • DBM In The Frequency generator
      • PA: 27Mhz FM TX Chain Design
      • PA: Exploring PA
      • PA: TX chain PA to Antenna
      • Misread CB Amplifier
      • Run into Wide-Band Buffer/Amplifiers
      • Noise Figure Mess
      • Core: evaluate unknown core
      • RF choke: dig SRF
      • RF Practice: better to know
    • Laboratory
      • Fixing GH2462 Directional Power meter
      • Tek465 Auto Mode Analysis
      • Tek CRT DC Restorer Circuits
      • Tektronix 4xx Power Supply
      • Fix One Rear Tek-465
      • Fix Another Tek 465
      • Tek 475 Restoration
      • Restoration Tek 485
      • Restoration An Tektronix 464
      • HP8640B -20V Power Supply Down
      • Repair the HP8558 SA
      • HP 8565 Spectrum Analyzer Repair
      • Tektronix 495P Fix and Alignment
      • Restoration One 465B
      • Restoration HP8662A
      • Tek 485 Hi-z Attenuator
      • HP3312 Restoration
      • Restoration of HP-21 alike Cavity Oscillators
      • Memory U019 Frequency Selective Volmeter
      • DH1718 Power Supply
      • Boonton 92B
      • Tektronix 465B B sweep Fix
    • Digital&Logic
      • Get to Know An Old VGA Card
      • Frequency Counter
    • Home Craft
      • Air Coil 4.5 Turns example
      • experimental board
      • Fuse based dead bug
      • Prototype Board by Banana plug
    • RF Calculators
      • Heterodyne tracking calculator
    • 3D Printing
      • Fix:under extrusion:long move or retraction
      • OpenRC truggy Improvement
      • 3D printer make RF fun and cool
    • Collection
      • Microphones
      • Transistors
      • IF Cans

RF Ham Radio

Here is the Rig I've ever built. Use Drop Down Menu choose the Radio Article.

Antenna

Antenna: Your first Antenna

Attachment

DYNALEC Earphone Repair Sound Power

Make A Crystal Headphone SC2-300 Headphone

Receiver

DC: Polyakov (I)

DC: Polyakov (II) Improvise

DC: Polyakov (III) Audio Again


FM Synchrodyne


Heterodyne: BJT AM receiver

Heterodyne: Build A Traditional Radio

Regen I: Amazing Regen Receiver

Regen II: High Performance Rig

Regen III: A Journey of BJT Regen

SuperRegen: AirCraft band receiver

Super Regen: Make it work


Rflex: with voltage doubler detector

TRF I: Origin of Receiver

TRF II: infinity 0V2

TRF III: Long Wire

TRF IV: Stabilize RF Amplifier RF choke deep dive

Crystal Radio (I)

Start From Crystal (II)

Crystal Set Season (III)

Transmitter

10M:28.6Mhz FM transmiter

27Mhz: AM RX/TX Experiment

AM: AM band transmiter by Techlib

AM: AM band transmiter by Techlib

27Mhz: AM RX/TX Experiment

HF: 0.5W Linear push pull PA


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