Amateur Logic TV

December 4, 2021
Ham College 83 - Extra Class Exam Questions – Part 21
E5B Time constants and phase relationships: RL and RC time constants, phase angle in reactive circuits and components, admittance and susceptance.
November 13, 2021
AmateurLogic 162: SDRPlay HD Radio, Android Pi, LiFePO4 Battery
George explains AM & FM Broadcast Signals and decodes HD Radio on an SDRPlay receiver. Mike cooks up some tasty Android Pi. Is this the Pi OS we’ve been waiting for? Tommy builds an economical 50 Ah LiFePO4 Battery Pack.
October 30, 2021
Ham College episode 82 - Extra Class Exam Questions – Part 20
E5A Resonance and Q: characteristics of resonant circuits: series and parallel resonance, definitions and effects of Q, half-power bandwidth, phase relationships in reactive circuits. 1:05:41
October 16, 2021
AmateurLogic 161: Our 16th Anniversary
Celebrating 16 years of AmateurLogic.TV. Peter, VK3PB drops in for and update from downunder. George shows some of his favorite tips and projects from the last few years. Tommy demonstrates a neat battery capacity tester. Emile discovers new Cheap Tricks with Echolink. Announcing the winner of our 16th Anniversary contest! Cliff Boand, WA0JTW will receive an Icom IC-705 Transceiver, AH-705 Auto Tuner, LC-192 Backpack, MFJ-4230MV Power Supply, MFJ-2012 OCF Antenna, and RG-8X coax.
October 2, 2021
Ham College 81 - Extra Class Exam Questions – Part 19
E4E Noise suppression and interference: Noise suppression and interference: system noise, electrical appliance noise, line noise, locating noise sources, DSP noise reduction, noise blankers, grounding for signals, common mode currents. 1:10:53
September 18, 2021
AmateurLogic 160: RN Noise, Huntsville Hamfest & Hurricane Ida
George demonstrate RN Noise, free AI noise suppression plug-in. Emile rides out Hurricane Ida while stationed on emergency stand by. Tom Apalenek, WA2IVD joins us to share his first visit to Huntsville Hamfest. AmateurLogic’s 16th Anniversary Contest. Someone is going to win a great Icom IC-705 transceiver package. Details at amateurlogic.tv/contest. 1:21:26
August 28, 2021
Ham College 80 - Extra Class Exam Questions – Part 18
E4D Receiver performance characteristics: blocking dynamic range, intermodulation and cross-modulation interference, third-order intercept, desensitization, preselectors. 55:30
August 14, 2021
AmateurLogic 159: 3D Fumes, SDR Console, AH-705 Setup
Mike 3D prints a custom Solder Fumes Extractor. Emile reviews SDR Console software. Tommy sets up his Icom AH-705 auto tuner. George does some AA exploring. Announcement of AmateurLogic’s 16th Anniversary Contest. Someone is going to win a great Icom IC-705 transceiver package. Details at amateurlogic.tv/contest . 1:18:50
July 31, 2021
Ham College 79 - Extra Class Exam Questions – Part 17
E4C Receiver performance characteristics: phase noise, noise floor, image rejection, MDS, signal-to-noise ratio, noise figure, reciprocal mixing, selectivity, effects of SDR receiver non-linearity, use of attenuators at low frequencies. 55:21
July 17, 2021
AmateurLogic 158: Distortion, Field Day & SDRangel
George’s Distortion Exploration. Tommy and the One Man Field Day Team. Mike discovers SDRangel software. 1:07:25
June 26, 2021
Ham College 78 - Extra Class Exam Questions – Part 16
E4B Measurement technique and limitations: instrument accuracy and performance limitations, probes, techniques to minimize errors, measurement of Q, instrument calibration, S parameters, vector network analyzers. 54:43
June 12, 2021
AmateurLogic 157: Cheap Touch, Charge & Chat
A $22 Raspberry Pi Touchscreen with case and fan. Is it worth it? The awesome VC4S Intelligent Battery Tester, Charger, Conditioner. VARA File Transfers and Chat over HF and FM gets the job done. 1:24:20
May 30, 2021
Ham College 77 - Extra Class Exam Questions – Part 15
E4A Test equipment: analog and digital instruments, spectrum analyzers, antenna analyzers, oscilloscopes, RF measurements, computer-aided measurements. 53:37
May 15, 2021
AmateurLogic 156: Radiogram
What’s a Shortwave Radiogram? OpenWebRX v1.0 Update. UBLOX7 Winlink and Time Sync using GPS. 1:04:56
May 1, 2021
Ham College 76 - Extra Class Exam Questions – Part 14
E3C Radio horizon, ground wave, propagation prediction techniques and modeling, effects of space weather parameters on propagation. 1:01:28
April 17, 2021
AmateurLogic 155: Tower Failure Follow Up
Pi Pico OLED display. Hamshack Hotline Beyond BLF. FCC licensed by rule radio services and you. Tower failure follow up. New RF Exposure rules updated. Name that part. 1:11:40
March 27, 2021
Ham College 75 - Extra Class Exam Questions – Part 13
E3B Transequatorial propagation, long-path, grayline, ordinary and extraordinary waves, chordal hop, and sporadic E mechanisms. 55:06
March 13, 2021
AmateurLogic 154: What The Heck Are They Saying?
What The Heck Are They Saying? George finds out in Translating Foreign Language Shortwave Broadcasts. Mike explores Satsagen spectrum analyzer and signal generator software. Tommy deploys his MFJ power strip. And John Amodeo, AA6JA is back with an update on the Last Man Standing Special Event. 1:32:59
February 27, 2021
Ham College 74 - Extra Class Exam Questions – Part 12
E3A Electromagnetic waves: Earth-Moon-Earth communications, meteor scatter, microwave tropospheric and scatter propagation, aurora propagation, ionospheric propagation changes over the day, circular polarization. 55:43
February 15, 2021
AmateurLogic 153: RigPi v2, Pico Pi, Winter Field Day
Howard Nurse, W6HN joins us to discuss some of the nice upgrades in RigPi version 2 and George updates his MFJ-1234 to RigPi v2. Tommy shows how to get started with the new Raspberry Pi Pico. Emile discusses this year’s unique Winter field Day event at Ozone Amateur Radio Club. 1:25:46

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