[RFI] DSL Filter Update

Jim Brown jim at audiosystemsgroup.com
Sun Mar 8 18:31:46 PDT 2009

On Sun, 8 Mar 2009 18:05:38 -0500 (CDT), Christopher E. Brown wrote:

>A filter with a sharp cutoff starting around 3Mhz combined with heavy 
>common mode choke would have alot less impact on the sync rate.

That's sort of the direction I was thinking about. Note that one can get 
quite serious with a common mode choke without affecting the 
differential mode circuit at all. Thanks for the info re: 2.2 MHz max 
bandwidth. The engineer friend I consulted on this told me 1.1 MHz. 
Sharp guy, but his experience in that industry was at least 4-5 years 
old, and he's been doing completely different things since. 


Jim Brown K9YC

More information about the RFI mailing list