[Elecraft] K3 - AFSK anamoly? No replies, try again

[Lyle Johnson]

Mike,

It could be that the band is quiet, this is a strong signal (S7 or more) 
and as you tune through to the opposite sideband the AGC is kicking up 
the gain so you hear the signal down some 70 dB or so, but if it is a 
strong signal on an otherwise fairly quiet band, you may hear it.

73,

Lyle KK7P

On 1/6/16 4:47 PM, Mike Murray wrote:
> Bob, Joe, Bill & Mike,
>
> Since I'm new to RTTY, I probably didn't describe my question in correct
> terminology - I mainly only operate CW.  I'll try again....
>
> I'm using DATA A/AFSK A, setup for low tones (915/170) and the RTTY dual-PB
> filter.  To illustrate what I'm hearing/seeing, imagine tuning down from
> 14.090 until you hear and can decode an RTTY signal.  Then continue tuning
> down 915 Hz (to what I probably erroneously referred to as zero beat) and
> then down another 915 Hz, I can now hear the same signal but inverted
> (slightly weaker, but definitely there).  It is not decodeable, but it is
> definitely there.  I assumed (yeah, I know) that the opposite sideband
> should be suppresed, but I think that's what I'm hearing.  Any advice will
> be appreciated.
>
> Mike - W0AG
>
> On Wed, Jan 6, 2016 at 12:28 PM, Bob McGraw K4TAX <rmcgraw at blomand.net>
> wrote:
>
>> Seems strange to me.  Don't or haven't noticed it with my K3S.   I would
>> think they perform about the same in this regard.
>>
>> 73
>> Bob, K4TAX
>>
>>
>> On 1/6/2016 10:40 AM, Mike Murray wrote:
>>
>>> I played a bit in the RTTY RU this weekend with my new-to-me K3 to learn
>>> the
>>> operation and iron out any kinks in my setup. Everything worked well
>>> except
>>> for a problem (?) on receive.  I was able to easily tune in signals and
>>> copy using MMTTY, but when I tuned to the other side of zero beat I could
>>> easily hear the same signal.  Obviously, it was inverted, but I was
>>> surprised
>>> to even hear it at all.  Is this normal or do I have something setup
>>> incorrectly?
>>>
>>> Mike - W0AG
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