A Drake 2-B from KW4H
Steve Reed, KW4H, refurbished a Drake 2-B and a 2-BQ and sent them to me as a gift for the serial-number work. Serial 10219 now lives here.
▶ 2026
Drake 2-B serial catalog
Rear-apron photographs of Drake 2-B serial numbers collected from eBay listings, as a companion to the German-tank estimate of how many were built.
Testing Harmonics on some Baofengs (Old and New)
2 m spectrum captures — transmit power and harmonic spur levels for several Baofeng handsets, with and without filtering.
Balanced Mixers: How LO and RF Become IF (and AF)
How a four-diode double-balanced ring mixer multiplies LO and RF to produce intermediate-frequency products at the sum and difference of the two input tones — from classic 455 kHz superhets to direct-conversion receivers where the IF sits near DC and audio.
How many Drake 2Bs were ever made?
# How Many Drake 2-Bs Were Ever Made? Counting Boatanchors with the German Tank Problem It started, as these things do, with Bill (N2CQR) thinking out loud. On an episode of the *SolderSmoke* podcast he wondered how many Drake 2-B receivers the R.L. Drake Company had ever actuall
▶ 2024
Analysis of Fake Numbers Station (Greensleeves) — October 2024
Yet another Greensleeves numbers-station transmission, decoded and analyzed.
More Greensleeves Numbers Station — Late September 2024
A long late-September transmission from the fake Greensleeves numbers station.
Analysis of Fake Numbers Station (Greensleeves) — September 2024
A new fake numbers station emerges, reading oddly high-pitched numbers between 0 and 25.
Analyzing the WWV/WWVH Time Signal on 15 MHz
At the start of every UTC minute, WWV and WWVH each transmit an 800 ms pulse on 15 MHz — often both audible at once. By stacking those pulses and fitting a smooth envelope model, we can read off their relative delay and watch WWVH fade while WWV stays steady.
▶ 2023
Oddity on 15025 kHz — September 2023
A strange shortwave signal spotted by Ormu on the HF Underground Discord.
▶ 2017
Pirate radio can be beautiful
6950 kHz, just before 0100 UTC 2017/9/5 – heard from Florida.