[Boatanchors] Spark Gap

[w8au at sssnet.com]

At 05:47 PM 7/8/2012, Mark K3MSB wrote:
>When was spark transmission made illegal?   Lot of info on the web about
>spark gap,  but I can't find anything about the date it was made illegal.

If you check QST mags from 1921, you will find that this was the year hams
were restricted from using spark.

Merchant shipping were permitted to use it up into the late thirties.  Guess
they had more clout with congress...

Perry   w8au