[Elecraft] K2 No Side Tone After Firmware Upgrade

I just aquired my second K2. It's and older one with a 3 digit serial number that I purchased used. Plans are to build and install a KDSP2. In preparation for that, I upgraded from firmware MCU2.01 / IOC1.02 to MCU2.04 / IOC1.09. Now I've lost the transmit sidetone. Toggling between

Re: [Elecraft] K2 No Side Tone After Firmware Upgrade

Also, this K2 appears to have all of the rev. B mods completed. -Original Message- From: cstove...@aol.com To: elecraft@mailman.qth.net Sent: Sun, Mar 14, 2010 1:58 pm Subject: [Elecraft] K2 No Side Tone After Firmware Upgrade I just aquired my second K2. It's and older

Re: [Elecraft] K2 No Side Tone After Firmware Upgrade

Chuck, I would wager that your K2 SN is less than 3000 and that your firmware upgrade is 2.04R (the letter is significant) If both those conditions are true, you will have to add the wiring to the Control Board to change the sidetone source from U6 pin 25 to U8 pin 4. The latest firmware no

Re: [Elecraft] K2 No Side Tone After Firmware Upgrade

to knock this out in a few minutes. Thanks for pointing me in the right place. Chuck K4QS -Original Message- From: Don Wilhelm w3...@embarqmail.com To: cstove...@aol.com Cc: elecraft@mailman.qth.net Sent: Sun, Mar 14, 2010 3:22 pm Subject: Re: [Elecraft] K2 No Side Tone After

Re: [Elecraft] K2 No Side Tone After Firmware Upgrade

Chuck, While both sidetone sources should be supported in 2.04P, go ahead and make the change anyway. Yes, make the cut on the trace ging between U6-25 and Q5. You will add 2 wires. The one from U8-4 to Q5 (make certain you do not put it on the R-PAK) is the one important for the sidetone.

Re: [Elecraft] K2 No Side Tone After Firmware Upgrade

. Thanks again Don. Chuck K4QS -Original Message- From: Don Wilhelm w3...@embarqmail.com To: elecraft@mailman.qth.net Sent: Sun, Mar 14, 2010 4:42 pm Subject: Re: [Elecraft] K2 No Side Tone After Firmware Upgrade Chuck, While both sidetone sources should be supported in 2.04P, go

Re: [Elecraft] K2 No Side Tone After Firmware Upgrade

@mailman.qth.net Sent: Sun, Mar 14, 2010 4:42 pm Subject: Re: [Elecraft] K2 No Side Tone After Firmware Upgrade Chuck, While both sidetone sources should be supported in 2.04P, go ahead and make the change anyway. Yes, make the cut on the trace ging between U6-25 and Q5. You will add 2 wires. The one

Re: [Elecraft] K2 No Side Tone After Firmware Upgrade

Oops! That's a grab and go K2 -Original Message- From: cstove...@aol.com To: olin...@bellsouth.net Cc: elecraft@mailman.qth.net Sent: Sun, Mar 14, 2010 6:43 pm Subject: Re: [Elecraft] K2 No Side Tone After Firmware Upgrade Guy, Who ever owned #972 before me did