http://elecraft.85.s1.nabble.com/Uncontrolled-full-volume-with-NR-Firmware-3-27-tp3543375p3544428.html
now. Watch out it is a very loud noise especially with the head phones on.
> "Please download the latest beta test code off the web site
> (k3fw3r27a.zip) and replace the DSP 2.24 code with the newer 2.25 DSP
> code. (The mcu version stays the same.)
> This is the issue we addressed when we changed the dsp from 2.24 to 2.25
> late in the week.
>
> 73, Eric"
>
> This was sent from Eric Swartz WA6HHQ at Elecraft, I haven't tried it
> yet but I'll bet it works.
> Bob
> KB1FRW
>
>
> Bob W Allen wrote:
>
>> Now I can make this happen repeatedly, with the NR at 1-4 and the notch
>> filter on auto as I tune across the birdie the volume goes very loud, it
>> is louder than any noise I can get the radio to do normally with the AF
>> all the way up.
>> I have discovered that this only does this in the NR 1-1 to 1-4 range,
>> very repeatable. As you tune through the birdie the radio starts making
>> a noise like caddisflies (moderate high pitched fast oscillation) then
>> it becomes very loud white noise. I don't spend anytime playing with the
>> controls but I know the AF does nothing.
>> I copied this to Elecraft tech support.
>> MCU (uC) 03.27, main DSP (d1)2.24, aux DSP (d2, if KRX3 is present),
>> flash parameters (FL)01.02, and KDVR3 controller (dr )01.03.
>> This is very loud, be careful!!
>> Bob
>> KB1FRW
>> 73
>>
>> Bob Allen wrote:
>>
>>
>>> An odd thing happened today, I was tuning through an area on 20m where I
>>> have a birdie, about 14.270-14.273.
>>> The noise reduction was on at 1-3 I think, I don't know what state the
>>> notch filter was at or the noise blanker, as I tuned into this area the
>>> audio was a bit odd, like screechy, I didn't think to much of that
>>> because of how the noise reduction works around birdies, but it was
>>> different than I had heard in the past.
>>> All of a sudden the volume in the headset and the internal speaker went
>>> to max and turning the volume control had no effect.
>>> I shutdown the radio to avoid damaging things and when I turned it back
>>> on everything was fine and I can't make it do this again.
>>> Very odd (and painful), wondering if this has happened to anyone else.
>>> Bob
>>> KB1FRW
>>> 73
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