Sounds like something is wiping out (or changing) the SSB filter
Offset. Before restoring the configuration, check the offset
(CONFIG: FLx FRQ) and see if it is correct. You can also try
resetting just the filter offset (from the radio) and see if
that restores SSB Receive.
73,
... Joe, W4TV
On 7/17/2010 9:15 AM, Terry Posey wrote:
> I think you are not alone, Bruce. I have experienced a similar SSB RX audio
> loss on several occasions. And there seems to be no recovery other than a
> RESTORE CONFIGURATION.
>
> In my case, I keep my K3 M1 memory loaded with VFO A 50.110 USB and VFO B
> 50.125 USB, and M2 memory loaded with VFO A 50.100 CW ALT and VFO B 50.110.5
> CW ALT. My loss of SSB RX audio seems to occur if I am working CW with the
> K3, then press the M1 memory and hurry-press the A/B button before the M1
> memory change sequence is completed (the K3's frequency and mode changes
> from memory is not instantaneous). After the K3 settles down, the USB RX
> audio is completely dead, but the CW, DATA, AM, FM modes audio still work.
> I have also cycled through the bands, and the USB RX audio is dead on each
> band. The USB TX audio seems to work; however, I have not tested for that
> extensively. I have found no way to restore the USB RX audio other than to
> RESTORE CONFIGURATION. This problem would be most inconvenient if it occurs
> during a contest or a DXpedition. Do not leave home without your K3
> Utility.
>
> Something for Wayne to ponder over the weekend.
>
> 73, Terry K4RX
>
> -----Original Message-----
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bruce Meier
> Sent: Saturday, July 17, 2010 8:04 AM
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] K3 - NO SSB RX
>
>
> Now that this problem has occurred twice it is time to ask if I am alone.
>
> One of my K3s lost all audio on SSB RX. It still worked fine on CW. TX was
> fine on both modes. However, if I increased the Width beyond 3.0kc SSB RX
> audio came back. When the Width was decreased below 3.0kc the audio was
> again gone. The problem was not band specific - it occurred on all bands.
> This happened last week during the IARU and again about 10 minutes ago.
> Last week it occurred while the K3 was powered up and being used. This
> week, when I it was powered on, it came up in this condition.
>
> The fix appears to be a RESET. (Push NORM - power up - EE INIT) Then I run
> the RESTORE CONFIGURATION from the K3 utility program. The K3 is then
> back to normal.
>
> My concern here is two fold. 1. This should not be happening. 2. This issue
> could be the beginning of a larger issue that won't be fixable with a RESET.
>
> Has anyone else had this issue?
>
> K3 # 1193
> Firmware: 3.97
> Filters: 2.7kc, 400hz, 250hz
>
>
> 73,
> Bruce - N1LN
>
>
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