Thanks for all the information. Yesterday, I did some research with levels and Don was spot on. I no longer have the issue when I drive the audio to the 4th tick with the 5th flashing. Full power out with no ramp up. Thanks all for setting me straight.
Lee. K0WA . On Jul 18, 2016 11:08 AM, "Ron D'Eau Claire" <r...@cobi.biz> wrote: > An e-mail exchange with the engineers this morning clarified the ALC > question. Let me correct my statement: > > ALC to an external amplifier starts at 8 bars. > > ALC internal to the K3/K3S starts at 5 bars. 5 to 7 bars indicates internal > ALC active; a combination of AF leveling bu the DSP and drive reduction by > the MCU. > > So, for fully linear (DATA A) operation stay below 5 bars as Don said (5th > bar barely flashing). For normal voice operation 5 to 7 bars is typical. > > 73, Ron AC7AC > > -----Original Message----- > From: Ron D'Eau Claire [mailto:r...@cobi.biz] > Sent: Sunday, July 17, 2016 2:40 PM > To: 'Leroy Buller'; 'donw...@embarqmail.com' > Cc: 'elecraft@mailman.qth.net' > Subject: RE: [Elecraft] K3 power oddity > > Lee - that is true with many radios. The K3/K3S was designed so that ALC > action starts at 8 bars. More info is in the K3S Owner's manual under "Mic > Gain and Compression Settings" on page 30. > > 73, Ron AC7AC > > -----Original Message----- > From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of > Leroy > Buller > Sent: Sunday, July 17, 2016 1:04 PM > To: donw...@embarqmail.com > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 power oddity > > Don... > > Thanks for the information. I will check that out. I was told a long time > ago by that elusive "someone" to keep the K3 linear that the ALC meter > should just flicker. Obviously, that was bogus advice. I will check this > out yet today. > > Thanks > > Lee > > > On Sun, Jul 17, 2016 at 8:19 AM, Don Wilhelm <donw...@embarqmail.com> > wrote: > > > Lee (and others) > > > > It is normal for the power control circuits to be reset after a band > > change. That prevents overshoot if you are driving an amplifier. > > Normally the power will come up to the requested power level in a > > couple dot times on CW, or several syllables when operating voice. > > > > If the problem is on voice or data, make sure you are driving the > > audio sufficiently. If you are not driving the K3 audio hard enough, > > power control will be "flaky". > > > > For Voice: With the compression set to zero, you should produce 5 to 7 > > bars on the ALC meter. After adjusting the mic gain for that > > indication, increase the compression as you choose - normally I would > > suggest compression of less than 10dB. > > > > For RTTY, if you are using FSK D mode, the power control should be > > automatic, but if you are using AFSK A (or other soundcard data > > modes), then do check your audio drive - of course compression should > > be set to zero, but the audio drive should drive the ALC meter to 4 > > bars solid with the 5th bar flashing. > > > > Note that the K3 controls power differently than other transceivers. > > Ignore the advice on the internet to show no ALC and adjust the power > > with the audio level. > > With the K3 (and K3S, KX3, KX2), the "ALC" meter is a combination "VU" > > meter and ALC meter. The 1st 4 bars are there to help you adjust the > > audio level. The onset of ALC is indicated by the 5th bar. So 4 bars > > solid and 5th bar flickering is the "no ALC" point for the K3. > > In data modes, adjust the power with the Power knob, not the audio level. > > > > 73, > > Don W3FPR > > > > On 7/17/2016 8:38 AM, Leroy Buller wrote: > > > >> Operated RTTY NAQP this weekend. When changing bands, I noticed my > power > >> would drop to 40 watts or so. After several transmissions, it would > rise > >> to 100 watts. I don't think this is normal. All antennas are matched. > >> Comments? > >> > >> > >> > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message > delivered to r...@cobi.biz > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
