Re: [Elecraft] RF feedback problems with P3 and external keyboard

I might suggest that folks do not neglect that the RF may be getting into the keyboard, causing its microcontroller to crash. Remember that we live in an "Everything is a computer" world. - Brendon KK6AYI On Sun, Nov 26, 2017 at 10:22 AM, Jim Brown wrote: > Good

Re: [Elecraft] RF feedback problems with P3 and external keyboard

Good advice, Kevin, especially winding as many turns as practical.  I wouldn't add the extension unless a choke without it didn't solve the problem. 73, Jim K9YC On 11/26/2017 8:52 AM, Kevin Stover, AC0H wrote: The mix of the toroid's used does matter. Mix 31 is best. Here is what I did

Re: [Elecraft] RF feedback problems with P3 and external keyboard

ideals Gerald From: Kevin Stover, AC0H Sent: Sunday, November 26, 2017 10:54 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] RF feedback problems with P3 and external keyboard The mix of the toroid's used does matter. Mix 31 is best. Here is what I did with a USB mouse. I bought four mix

Re: [Elecraft] RF feedback problems with P3 and external keyboard

The mix of the toroid's used does matter. Mix 31 is best. Here is what I did with a USB mouse. I bought four mix 31 snapon's and installed two 18 inches back from the mouse and another pair 18 inches back from the connector, winding as many turns as would fit. I bought a USB extension cable

Re: [Elecraft] RF feedback problems with P3 and external keyboard

with your P3 issue. 73, Alan. G4GNX -Original Message- From: ANDY NEHAN Sent: Friday, November 24, 2017 8:34 PM To: elecraft@mailman.qth.net Subject: [Elecraft] RF feedback problems with P3 and external keyboard After LOTS of experimentation I think I have found that just recently I have

[Elecraft] RF feedback problems with P3 and external keyboard

After LOTS of experimentation I think I have found that just recently I have some RF feedback into the usb keyboard on the rear of the P3. This manifests itself particularly badly with the Genovation keyboard but is also present with a standard usb keyboard. Oddly enough it is MUCH worse when