The AM Forum
April 20, 2024, 12:32:14 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
 
   Home   Help Calendar Links Staff List Gallery Login Register  
Pages: [1]   Go Down
« previous next »
  Print  
Author Topic: Common Mode Chokes by Myantennas  (Read 3369 times)
0 Members and 1 Guest are viewing this topic.
WA4WAX
Member

Offline Offline

Posts: 417
« on: January 26, 2017, 05:03:49 PM »
Has anyone tried one of these devices?
Logged
WA2SQQ
Contributing
Member
*
Offline Offline

Posts: 1092
« Reply #1 on: January 30, 2017, 08:15:21 AM »
I use the chokes, but I make my own. They will keep RF out of the shack, but I've never seen any reduction in the received noise level. I've compared slipping multiple "beads" over the coax against winding 4-6 turns of RG-142 through a torroid core. The torroid ciore is much more effective, easier to make and less $$.
Logged
W1ITT
Member

Offline Offline

Posts: 573
« Reply #2 on: January 30, 2017, 09:08:01 AM »
http://www.audiosystemsgroup.com/RFI-Ham.pdf

K9YC has a very comprehensive tutorial on common mode chokes, among other things, with some nice cookbook solutions as well.  You can build your own, usually better than what you can buy.
Logged
WA2SQQ
Contributing
Member
*
Offline Offline

Posts: 1092
« Reply #3 on: January 30, 2017, 10:29:15 AM »
Quote from: W1ITT on January 30, 2017, 09:08:01 AM
http://www.audiosystemsgroup.com/RFI-Ham.pdf

K9YC has a very comprehensive tutorial on common mode chokes, among other things, with some nice cookbook solutions as well.  You can build your own, usually better than what you can buy.

I totally agree - this paper should be the "bible" on such chokes.
Logged
Pages: [1]   Go Up
  Print  
The AM Forum  > THE AM BULLETIN BOARD > Technical Forum > Topic: Common Mode Chokes by Myantennas
 « previous next »
 
Jump to:  

AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
 AMfone © 2001-2015
Powered by SMF 1.1.21 | SMF © 2015, Simple Machines
Page created in 0.047 seconds with 19 queries.