[Elecraft] KX3 firmware rev. 1.52: CW-in-SSB feature now allows keyer speed adjustment
Jim Sheldon
w0eb at cox.net
Wed Jun 12 15:53:10 EDT 2013
I just tried this and find that Reed is correct but it isn't just on 80 and 40 because they are LSB, it happens in LSB on all bands. The SSB is clean until you hit one DIT and then the distortion enters the picture. The distortion is bad enough that your speech is all but unintelligible. Turning off CW-in-SSB clears the problem and appears to do so even without recycling power on the radio. At least it worked that way on 20 meters (the last band I tested).
Jim Sheldon - W0EB
> I'll try to duplicate this. I suggest turning off CW-in-SSB until
> we resolve it.
>
> Wayne
>
>
> On Jun 12, 2013, at 12:21 PM, Reed <w4jz at bellsouth.net> wrote:
>
>> Wayne, I noticed a problem when going to 80 & 40, guessing it is
>> because they are LSB, I hear really bad SSB transmit distortion.
>> I'm using a IC-746PRO as receiver. Transmitting into a dummy
>> load. CW tone sounds good. When I disable CW in SSB & turn rig
>> off and back on SSB audio sounds good, but as soon as I turn CW
>> in SSB on and transmit in CW then talk in mic I hear the really
>> bad distortion. This doesn't happen on USB. I just tested this
>> on USB on 40 meters and works fine, but when going to LSB and
>> after sending in CW the distortion returns when talking into mic.
>>
>> Reed W4JZ
>>
>>
>> On 6/12/2013 1:25 PM, Wayne Burdick wrote:
>>> As some of you noted, when CW-in-SSB was enabled, you had to go
>>> back to CW mode to adjust keyer speed. I believe I've found a
>>> good way to address this.
>>>
>>> In this new version, when CW-in-SSB is enabled and you're in
>>> SSB mode, tapping the KEYER/MIC knob toggles between keyer
>>> speed and mic gain rather than between the two transmit
>>> metering scales (CMP/ALC and SWR/RF). However, the CMP/ALC
>>> scale is still shown temporarily when mic gain is adjusted
>>> (about 5 seconds after you stop moving the mic gain control).
>>> This scale is also shown indefinitely during CMP adjustment. So
>>> this change represents only a small loss in functionality.
>>>
>>> Let me know if it works for you.
>>>
>>> 73,
>>> Wayne
>>> N6KR
>>>
>>> * * *
>>>
>>> MCU 1.52 / DSP 1.21, 6-12-2013
>>>
>>> * CW-IN-SSB TRANSMIT ADDED: This feature allows you to send CW
>>> while in SSB mode, which can be useful when your SSB signal
>>> cannot be copied due to poor conditions. The other station will
>>> hear a tone at your CW pitch. To enable CW-in-SSB: Locate the
>>> CW WGHT menu entry, then tap '1' (PRE) to alternate between
>>> "SSW +CW" (enabled) and "SSB -CW" (disabled). The default is
>>> disabled. Important Notes: (1) CW-in-SSB does not apply to
>>> SPLIT mode. (2) When CW-in-SSB is enabled, tapping the
>>> KEYER/MIC knob toggles between keyer speed and mic gain rather
>>> than between the two transmit metering scales (CMP/ALC and
>>> SWR/RF). The CMP/ALC scale is still shown temporarily whenever
>>> CMP or mic gain are adjusted.
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