Kihwal Lee's Home Page About me Software Engineer (Real-Time Embedded Systems, Data Storage, Distrubuted Systems, Apache Hadoop PMC member/Committer) Ham Radio Operator (K9SUL, ex-HL1SUL) My Instagram page: https://www.instagram.com/k9sul_pub My YouTube channel: https://www.youtube.com/user/K9SUL/videos Links New! Family history The start of the "Hongju" Lee family was sometime in 1100s. The first ancestor who were awarded this last name by the King was a general in the army. He died in 1215. I am a 32nd generation. Receiver Buying Guide from March 1963 issue of the 73 magazine. Apparently Gonset wasn't included. Pictures from Dayton Hamvention 2016 Various measurements using NanoVNA Misc files including Drake TR5 schematics Recent Projects 1956 Hallicrafters SX-100 1960 Gonset SSB Station Bucking transformer for vintage equipment Linearity of "linear" amplifiers Restoring Hallicrafters HT-30 Hammarlund HQ-100A. Product detector and AVC mod Knight T-60 transmitter Repair and restoration of a BC-348-P Using a si5351 for generating carrier and band LO signal for the Drake TR-3 Drake L75 Linear Amplifier Central Electronics 600L Linear amplifier P&H LA-500M Spitfire Linear Amp Building a power supply for the Hallicrafters SR-400 Hallicrafters HT-18 Motorola AM/FM Radio with push-pull audio, B31E All Projects Vintage SSB station: Hallicrafters HT-18 Exciter(1947), S-53A Receiver(1948), Heathkit SB-10(1959), Central Electronics Sideband Slicer(1955), RME DB-23 Preselector(1956) 1956 Hallicrafters SSB station: HT-30 transmitter(1955), SX-100 mark 1a receiver(1956) 1960 Gonset SSB station: GSB-101 linear (1959), GSB-100 phasing type tx(1958), G-63 double conversion superhet rx(1960) Hallicraftets HT-32B(1960) and SX-115(1961) Drake TR5(1982), L75(1981), MN2700(1977), SP75 and P75