RE: [Elecraft] K2 and Feedback

2007-02-19 Thread Don Wilhelm
Dave, I would believe you are experiencing ground loop problems rather than feedback - yes, groundloops can introduce feedback of a type, but here in ham corcles we usually relate feedback to the RF type. Check by operating into a dummy load - if it persists, it is ground loop problems and not RF

Re: [Elecraft] K2 and Feedback

2007-02-19 Thread Larry
I have a Heil Clearspeech speaker and it specifically recommends a separate power supply for the speaker, do not run off the same supply as the rig. I didn't see the reason for that, so I hooked the speaker up to the same supply I used for the K2. It sounded pretty good a low volume, but when I

[Elecraft] K2 and Feedback

2007-02-19 Thread David Fleming
I have a significant feedback problem with my K2/KPA100. When transmitting there feedback (sounds as clear and as loud as a PA system) through an attached external speaker. The only partial solution I have found is to use a sea rate power supply for the K2 and NOT connect the power supply to