@w2aew
  @w2aew
w2aew | #213: Drake 2B final repairs, quick bench test, and "on-air" listening @w2aew | Uploaded September 2015 | Updated October 2024, 1 hour ago.
This video documents the final "obvious" repairs (more recapping, bad resistor, broken terminal strip) to the hamfest special Drake 2B receiver. A quick bench test of each band is shown, then the rig is brought up to the hamshack to listen to some signals live.

The rig works quite well, and seems as sensitive as my modern rigs. It could likely use a touch-up on the alignment, which may be a topic for a future video.

A couple of thanks are in order here. I want to thank my friend Bob KC2RDU, also known as RadioWild on YouTube - he helped me test out the tubes and hooked me up with the replacements I needed:
youtube.com/user/Radiowild
Many thanks to Dino Papas KL0S for pointing me in the right direction for info and documentation. He linked me up with K4OAH for some great Drake service documentation:
k4oah.com
as well as Hayseed Hamfest for the replacement electrolytic caps:
hayseedhamfest.com
I also was lucky to find the 6-screw terminal strip at Electronics Plus in San Rafael, CA:
electronicplus.com
#213: Drake 2B final repairs, quick bench test, and on-air listening#318: NanoVNA comparison measuring a duplexer - NanoVNA-H4 and SAA-2N#260: RF Diode Mixer LO Drive Level & Conversion Loss | 1dB Compression | Distortion#211: TSG4106A RF signal generator unboxing and mini feature review#276: Smith Chart: Design an L-Network - Impedance Matching Circuit#275: Smith Chart: Z, VSWR, Reflection Coef and Transmission Line Effects#250: Kenwood SM-220 Station Monitor Demo / Overview#366: Back to Basics: Basics of the Bipolar Transistor - NPN and PNP#256: Capacitor types, characteristics, and applications#245: Old Tech: The Wadley Loop Superhet Receiver - Yaesu FRG-7 Example#345: Generating AM and DSB-SC with a Double-Balanced Diode Ring Mixer / Modulator#384: What is the bandwidth of a CW / Morse code signal? (as a function of speed and rise/fall time)

#213: Drake 2B final repairs, quick bench test, and "on-air" listening @w2aew

SHARE TO X SHARE TO REDDIT SHARE TO FACEBOOK WALLPAPER