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...at the DeAnza swapmeet
To equip a lab cheaply: buy broken gear and fix it yourself...
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HF Band Conditions
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Subjects
- 10 Meter Beacon (1)
- 1820-0092 Replacement (1)
- 500W HF PA (8)
- 813 AM Transmitter (3)
- 813 AM Transmitter - accessories (2)
- ABCD Matrix (1)
- AD8307 (1)
- Amplifier 500W (1)
- Antenna - 43-foot Horizontal Doublet (1)
- Antenna - 43-foot Vertical Doublet (1)
- Antenna - 80 Meter Loop (3)
- Antenna - Doublet Designing (1)
- Antenna - LPi (1)
- Antenna Launcher (2)
- Antenna Tuner: Automatic (Auto-tuner) (10)
- Antenna Tuner: Drake MN-4 (2)
- Antenna Tuner: Elecraft KAT500 (1)
- Antenna Tuner: Elecraft T1 (1)
- Antenna Tuner: Icom AH-4 (1)
- Antenna Tuner: Nye Viking MB-V-A (1)
- Antenna Tuner: Rohde Antenna Coupler (1)
- Antenna Tuner: W8ZR EZ-Tuner (2)
- Antenna Tuners: Reflection Analysis using Convolution (2)
- Antenna Tuners: L-Networks (3)
- Antenna Tuners: LC Network Reflection & Transmission Coefficients (1)
- Antenna Tuners: LC Tuner & Transmission Line Wave Interactions (1)
- Antenna Tuners: Match Detection (1)
- Antenna Tuners: Measuring Power Loss (2)
- Antenna Tuners: Measuring the Matching Range (1)
- Antenna Tuners: Smith Chart Tutorial (1)
- Antenna Tuners: T-Networks (1)
- Antenna Tuners: Wave Interference (1)
- ARC-5 -- Dynamotor Relubrication (1)
- ARC-5 Receiver -- AC Power Supply (1)
- ARC-5 Receiver -- BC-454-B (1)
- Arduino (3)
- Balun 3 Port Analysis (1)
- Baluns (1)
- Baluns: Characterizing Loss and C.M. Impedance (1)
- Baluns: Nooelec 1:9 Balun (1)
- Baluns: Effect of Characteristic Impedance on Zin (1)
- Baluns: Y21 Method of CM Impedance Measurement (1)
- Bass Guitar Painting Jig (1)
- Bass Guitar: Building a Lefty Short-scale (1)
- Bass Guitar: G&L ASAT (2)
- Bass Guitar: G&L ASAT Strap Button Extender (1)
- Bass Guitar: Mellow Yellow Build (1)
- Bass Guitar: Sonic Blue P-bass Build (3)
- BC-454-B ARC-5 Receiver (1)
- BK TL89F1 (1)
- Central Electronics 100V (1)
- Class E/F Exciter (4)
- Common-Mode Chokes (2)
- Common-Mode Chokes: Removing VNA Port Capacitance from S11 Impedance Measurements (1)
- Common-Mode Chokes: Y21 Method vs S21 (G3TXQ) (1)
- Common-Mode Chokes: 3 Port Analysis (1)
- Common-mode Chokes: Calculating the Inductance of a Ferrite Toroid Inductor (1)
- Common-Mode Chokes: Power Dissipation vs Effectiveness (1)
- Common-Mode Chokes: S21 (G3TXQ) vs S11 (1)
- Common-Mode Currents (1)
- Common-Mode Currents in Circuits (1)
- Common-Mode Currents on Two-Wire Transmission Lines (1)
- Converting an HP Counter to a Clock (1)
- Convolution and Impedance Matching (2)
- Custom Front Panels (1)
- Direct Sampling HF Transceiver (2)
- Directional Bridge (1)
- Directional Bridge vs Rsource and Rdetector (1)
- Directional Couplers: Bird Wattmeter (1)
- Directional Couplers: Bruene (3)
- Directional Couplers: Building (4)
- Directional Couplers: Calculating Flux Density (1)
- Directional Couplers: Daiwa (1)
- Directional Couplers: Monimatch (1)
- Directional Couplers: Tandem-Match (5)
- Directional Couplers: Twin-Lead "Twin-Lamp" SWR Indicator (1)
- DSL Modem/Router 5031NV (1)
- DSL Modem/Router NVG510 (1)
- Dynamotor DM-32-A (1)
- Dynamotor DY-2/ARR-2 (1)
- Field Strength Meter (1)
- Fireside Type A Crystal Radio (1)
- Flex 5000 (4)
- Fluke 6060B (1)
- FPGA SDR HF Transceiver (12)
- Google WiFi (1)
- GPS Disciplined-Oscillator (3)
- Heathkit Cheyenne Transmitter (2)
- Heathkit HR-10 Receiver (2)
- Heathkit SB-220 Amplifier (2)
- HP 16047A (1)
- HP 1820-0092 Replacement (1)
- HP 3314A (2)
- HP 3438A (1)
- HP 3478A (1)
- HP 5216A (1)
- HP 8503A (1)
- HP 85046A (1)
- HP 85046B (2)
- HP 8640B (1)
- Icom IC-725 Frequency Stability (1)
- IMD Uncertainty (1)
- Impedance Matching (6)
- Inductance Calculation of a Ferrite Toroidal Inductor (1)
- KW Atlanta Transceiver (1)
- L-Network: Complex Load to Real Zo (1)
- LM2596 - Counterfeit (1)
- LPi Antenna (QST Nov. 2023) -Unun Schematic Correction (1)
- LTV G-133 Receiver (1)
- Maxwell's "A Tutorial Dispelling Certain Misconceptions Concerning Wave Interference in Impedance Matching" (1)
- ME-165/G SWR & Power Meter (1)
- Morrow MB-565 (1)
- Morrow MB-6 (1)
- NanoVNA (2)
- Networks: Comparing L to T (1)
- Networks: L (1)
- Networks: L-Network Design Equations (1)
- Networks: L-Network Design Equations for Lossy Networks (1)
- Networks: L-Network Equations for Any Impedance Transformation (1)
- Networks: Reflection and Transmission through a 2-port Network (1)
- Networks: Revisiting L-Network Design Constraints (1)
- Networks: T (1)
- PA IMD (1)
- Power and SWR Equations (1)
- PRC-47 (1)
- QRP Transceiver (1)
- QSL Card (1)
- QST - LPi Antenna (Nov. 2023) (1)
- Quarter-wave Transformer (1)
- R-105/ARR-15 Receiver (2)
- Raspberry PI (3)
- Relay Module - 1 Channel Opto-Isolated - from Amazon (1)
- Remote Operation (1)
- Repair Log: Fluke 6060B (1)
- Repair Log: HP 3314A (2)
- Repair Log: HP 3438A (1)
- Repair Log: HP 5216A (1)
- Repair Log: HP 8640B (1)
- Repair Log: Tek SC-502 (1)
- Repair Log: Tek SC-504 (1)
- RF Power Meter (1)
- Rikstelefonen Type E.B. 21 Telephone (1)
- RLB Bridge vs Rsource and Rdetector (1)
- SDR-1000 (9)
- Shack Pictures (1)
- Si5351 (1)
- SMD Prototyping (1)
- Smith Charts: 3-D Data Plots (1)
- Smith Charts: Tutorial (1)
- Source Impedance vs SWR (1)
- SPICE (2)
- SWR and Power Equations (1)
- SWR and Voltage Equations (1)
- SWR vs Output Impedance (1)
- SWR vs Source Impedance (1)
- Tektronix SC502 (1)
- Tektronix SC504 (1)
- The Gang (1)
- Theory (3)
- Transformers (at RF) (1)
- Transmission Line: 2-Port Network (1)
- Transmission Lines: Common-mode Currents (1)
- Transmission Lines: Input Impedance of Terminated Line (1)
- Transmission Lines: Zo Calculation from S11 Method 1: Zo=SQRT(Zsc*Zoc) (1)
- Transmission Lines: Zo Calculation from S11 Method 2: 1/8th Lambda (1)
- Transmission Lines: Zo Calculation from S11 Method 3: Circle of Constant SWR (1)
- Transmission-Line Transformers (1)
- VNA (1)
- VNA: 12-term Error Model (1)
- VNA: Thru De-embedding (1)
- VNC (2)
- Voltage and SWR Equations (1)
- Walter Maxwell (1)
- Wave Mechanics of Transmission Lines (1)
- Western Electric 211 Spacesaver Telephone (1)
- WRL Duo-Bander 84 (1)
- WSPR (3)
- Y21 Impedance Measurement (1)
- Yaesu FT-1000D AGC Mods (1)
K6JCA
...at the DeAnza swapmeet
About Me
To reach me...
If you'd like to reach me, just send an email to:
jca1955
'at'
sbcglobal.net
jca1955
'at'
sbcglobal.net
The Lab!
To equip a lab cheaply: buy broken gear and fix it yourself...
And the shack at k6jca
