Contact Me - File Upload - Donate
 ____  _      _                   _     _   _       _      ____                
|  _ \(_) ___| |__   __ _ _ __ __| |___| | | |_   _| |__  / ___|___  _ __ ___  
| |_) | |/ __| '_ \ / _` | '__/ _` / __| |_| | | | | '_ \| |   / _ \| '_ ` _ \ 
|  _ <| | (__| | | | (_| | | | (_| \__ \  _  | |_| | |_) | |__| (_) | | | | | |
|_| \_\_|\___|_| |_|\__,_|_|  \__,_|___/_| |_|\__,_|_.__(_)____\___/|_| |_| |_|

C:\Test_Equipment\Philco\BC-221-AE\>_

 Name  Date  Size  Description 
 <Back 
 BC-221-AE_1.jpg  09/02/2022  2MBs  Philco Frequency Meter BC-221-AE (1940s) 
 BC-221-AE_2.jpg  09/02/2022  2MBs  Philco Frequency Meter BC-221-AE (1940s) 
 BC-221-AE_3.jpg  09/02/2022  2MBs  Philco Frequency Meter BC-221-AE (1940s) 
 BC-221-AE_4.jpg  09/02/2022  2MBs  Philco Frequency Meter BC-221-AE (1940s) 
 BC-221-AE_5.jpg  09/02/2022  2MBs  Philco Frequency Meter BC-221-AE (1940s) 
 BC-221-AE_6.jpg  09/02/2022  1MBs  Philco Frequency Meter BC-221-AE (1940s) 
 BC-221-AE_7.jpg  09/02/2022  2MBs  Philco Frequency Meter BC-221-AE (1940s) 
 readme.txt  09/02/2022  1KBs  ReadMe  

This has to be the oldest bit of kit i have, this used to belong to my dad, and has been up in the loft for many years (after his passing), i think it's from the 1940's, used in the 2nd world war, for the U.S Army, it would of been powered by a 135 volt battery (but at some point had been converted to run off AC), from the info i have found, this was used for calibrating radio equipment, by using a method called Zero-Beating, the Frequency Meter still works, but the dial reading's are a bit off from the setting in the Calibration Book, i did replace some of the components in the power supply to make it a bit safer to use, but for it's age it still works really well. Here's a YouTube video of a newer Frequency Meter, plus the same model as mine (not my video) - (https://www.youtube.com/watch?v=9iZy41OfGHM) and some more info and the User Manuel - (http://radionerds.com/index.php/BC-221) - (http://www.pa3esy.nl/military/us/meet/BC-221/BC221AE/html/bc221ae_set.html)

^Top^