[Elecraft] Possible issue with K3 Line In port?

[David Box]

Have you tried with VOX ON?
K5MWR 

On June 24, 2019 8:39:52 AM CDT, Paula Uscian <pmuscian at sbcglobal.net> wrote:
>No, VOX is turned off.
>
>Sent from Mail for Windows 10
>
>From: David Box
>Sent: Monday, June 24, 2019 8:36 AM
>To: elecraft at mailman.qth.net; Paula Uscian; elecraft at mailman.qth.net
>Subject: Re: [Elecraft] Possible issue with K3 Line In port?
>
>Is VOX turned on?
>K5MWR 
>On June 24, 2019 8:29:50 AM CDT, Paula Uscian <pmuscian at sbcglobal.net>
>wrote:
>I suspect I may have an issue with the Line In port of my K3, as my
>ability to TX in any digital mode has gone away.
>
>Setup:
>1. Using a Tascam US-122 MKII outboard sound card.
>2. MIC SEL is set to Line In on the K3.
>3. Digital software, e.g., WinWarbler and WSJT, have the Tascam
>selected for TX and RX.
>4. Mode selection for FT8 is set to Data, for RTTY is set to AFSK 45
>bps.
>5. Levels are the same as when this system worked – K3 Mic level is set
>around 43-44.
>
>Symptoms:
>1. When I try to TX on FT8 from within WSJT, the K3 red TX light comes
>on and over my headphones I can hear a steady tuning tone, but I have
>no power out, not one bar.
>2. During TX I do hear “behind” the tones a brief low level
>buzzy/crackly sound that recurs every second or so.
>3. I get the same results as above when trying to TX in WSJT, though I
>hear tones typical of a transmission vs. a steady tone.
>4. I get the same results as above when I switch to RTTY and TX within
>WinWarbler; RYRYRY, but no power out.
>5. The Tascam and WSJT work fine together to decode FT8 signals.
>
>T-shooting Steps to Date:
>1. Uninstalled, rebooted and reinstalled all Tascam software and
>current drivers. Same results.
>2. Tried the Line Out from the internal PC soundcard to the Line In on
>the K3. This also involved using a different cable from that connecting
>the Tascam to the K3. Reconfigured the digital software to use the
>internal sound card for TX. Same results as described above (including
>the noise).
>3. Verified the K3 does TX (at least on CW).
>
>I suspect the board with the Line In port may have gone bad, but not
>sure if that’s the issue. If so, is there anything further worth
>checking or should I just replace the board?
>
>Thanks for any guidance!
>
>73 Paula k9ir
>
>Sent from Mail for Windows 10
>
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