Find:
About Me
Blogs
- AC8JO
- Antique Finds of J&J
- Antique Radio Blog
- Arcane Radio Trivia
- Audio Tweak
- Audioklassiks
- Broadcast Law Blog
- BuildLounge
- Classic Receivers
- Coffman Labs Blog
- Confessions of a Part-Time Audiophile
- Duanes Radios
- EEVBlog
- Engineering Radio
- Glowbugs Times
- Glowbugs Web
- Guitar Fool
- Hack a Day
- HeavyDIY
- High on Solder
- Ilektronx
- KN0CK
- MicroSyl
- Nick's Radio Corner
- Old Stock Audio
- Pragmaddux
- Radio Stuff
- Radio Time Traveller
- Richard Sears, Vintage Electronics
- Seventies Stereo
- The Paleotechnologist
- The Signal Path
- Tube Addict
- TubeSound
Friends
Resources
- 901
- Active Equalizer
- amateur radio
- amplifier
- android
- Antique
- antique radio
- Bose
- Bose 901
- Bose Active Equalizer
- Bose Equalizer
- bose repair
- capacitor
- capacitor replacement
- cost engineering
- Craigslist
- eBay
- electronics
- Equalizer
- fried electronics
- GE
- grunow
- grunow 589
- grunow chassis 5-U
- grunow radio restoration
- ham radio
- hf
- hi-fi
- hifi
- HP
- KN0CK
- old radio
- oscilloscope
- overhaul
- philco
- photos
- power supply
- projects
- radio
- rca
- receiver
- repair
- restoration
- RTL-SDR
- RTLSDR
- SDR#
- seattle
- seattle vintage radio repair
- Series 1
- series I
- series II
- series IV
- shortwave
- soldering
- Sony
- Speakers
- speaker spotter
- stereo
- streaming
- t-mobile
- test equipment
- transistor
- transistor radio
- tube
- Tube Amp
- tube radio
- up-converter
- Upconverter
- vacuum tube
- vintage
- vintage ad
- vintage radio
- Westinghouse
- zenith
Categories
May 2022 S M T W T F S 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Meta
Tag Archives: eye tube
1930s Vintage Detrola 335 Radio Repair
Repairing this Detrola 335 was a major detective project with only a partial schematic after it was hacked on was a major project, but this radio cleaned up nicely and came back to life after tracking down all the faults, including replaced components, undocumented modifications, and a failed thermal switch. After adding an eye tube per the owner’s request, this fantastic art deco style tabletop radio is going to play beautiful music for many years to come. Click through for many more photos and schematic snips of the repair process!
Magic Eye Tube Spectrum Analyzer
French hobbyist Sylvain came up with a fascinating project using 8 Magic Eye tubes from old equipment to make an audio spectrum analyzer. I’ve worked with magic eye tubes quite a few times, they’re very fascinating. Originally precursors to CRTs, they’ve found … Continue reading →