We found this ad quite interesting. Apparently there were there were AC line noise problems that created a need for filtering devices back in 1929. The more things change the more they stay the same (
plus ça change, plus c'est la même chose. Plus c'est la même chose, plus ça change).
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEju8i-irWkeGZsZGCl12-IOMYkkyWTbHb7jiHwiPeEbtpDSze7HrmYcMKzLtS-bcq_Ay0BLeivSnarncp6cgwhyoCJPISVwJp4dD1X9iL56YodRZmJ0-SZ65JeZDZJoFQRwLw0WE-FRkKs/s1600/1929+Falck+Claroceptor+Ad.JPG) |
1929 Falck Claroceptor Ad |
Good DX and 73,
NJ2X