[Elecraft] OT: Preparing for KPA500 and KAT500
Please forgive this off topic post--I need to raise money for a KPA500 and KAT500! For Sale: 1) AMERITRON AL-1200 Amplifier. One owner (me). Pre-MFJ. In like new condition. Seldom used, always babied (run at 1000w out when used). Capable of running GAS -- once tested at 2400W out on 40m when max K3 drive was 120w. Needs about 40-50w in for a KW out. $2000 OBO (check the price of a new 3CX1200 tube if you think this is too high). 2) HEATHKIT SB-220 converted to 6 meters (AKA Carl or SB-226) EXCELLENT condition. Comes with both new matched pair of 3-500ZG tubes with less than 10 hours on them, and the original Eimac 3-500Z tubes which are still good but a little flat. 1200W+ out SSB, will run 500W out on digital modes (including WSJT) endlessly. Also babied since rebuild, with extra fan on power supply and run only at 500W for WSJT. $1500 firm 3) HENRY 2002A 2 meter amplifier. Single 3CX800 tube. Runs 400-500W out in digital modes, 800-900w out SSB. Has a grid current meter issue. Tube has less than 30 hours ofr operation on it, with a spare tube as well that has slight damage but works OK $1200 firm All amps are in the 80lb class so pickup only in the San Franciso Bay Area. All wired for 240v. QSK switch available. I saw the insides of a couple of the KPA500 field-test units and started to drool immediately! Please email me OFF LIST ONLY if you are interested. 73, Eric WD6DBM __ 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
Re: [Elecraft] Tips for using APF
Nice write-up on tips for using the APF function, Wayne. Would you please consider adding this to the K3 Operating Tips page on the Elecraft website? (and the manual, as I am sure this will be a recurring area of inquiry...) 73, Bruce, N1RX __ 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
[Elecraft] [K2] Just a confirm about KIO2
Hy to all, just a confirm before selling an unused option. I bought in 2010 october a KIO2 to add to my K2/10. On the way i decided to switch directly to K2/100 with KPA100 mounted inside the K2 and will order the kit today. I just want only a confirm that i don't need anymore the KIO2 to be added in my K2 because all the interface is included in KPA100 kit, isn't it??? Then the interface in KPA100 will permit all the connection required to a pc as the KIO2, am i right? Tnx in advance. IZ2NYY Giuseppe Pippo Sorrentino Milano ITALY __ 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
Re: [Elecraft] Tips for using APF
Very nice summary Wayne! I'd add a couple of comments: 1. I find an even wider WIDTH works better for me (400-450 Hz using a 500 Hz 8-pole). If I set WIDTH too narrow (e.g. 50-100 Hz) I get too much ambient ringing. 2. Tuning is indeed very critical. This is why I only use APF for *extremely* weak signals buried in noise. I never leave it on continuously and it would be unusable in a fast-paced activity like a contest. 3. I reduce my AF Gain from its normal setting. APF compensates with Gain of ~9 dB at its exact center so the signal will pop up when you get the critical tuning correct. 4. Indeed the effectiveness of APF seems to vary with the type of noise. I find it most useful in mild atmospheric noise (lightning from a long distance) and less useful in galactic or white noise. 73, Bill W4ZV wayne burdick wrote: A couple of notes from the Elecraft lab: 1. When using APF, it's critical to tune the signal in very accurately. (Otherwise it may seem like APF isn't working.) For best results, I recommend using 1-Hz VFO tuning. An alternative is to adjust the APF center pitch, which can be moved in 5-Hz increments using the SHIFT control. Note that only 10-Hz increments are displayed. 2. There are two filter Presets (I and II, accessed by HOLDing the HI/WIDTH knob). You can turn APF on for one preset and off for the other. This control is closer to where the action is than DUAL PB, and I find it more convenient to use. 3. You can of course hear the effect of APF by ear, but if you want to quantify it, try using the built-in AF voltmeter on a very weak constant carrier buried in noise. Here's the procedure I use: a. Switch to a noisy band/antenna (80 m at night, let's say, with a vertical or inverted-V). b. Turn APF off. c. Set WIDTH to 300 Hz, with no SHIFT. d. Hunt for an extremely weak on-air carrier -- one you can just barely detect. A carrier that's caused by a local computer or TV is ideal because there won't be much fading during the test. e. Tap DISP and rotate VFO B until you get to AFV (audio volt meter). Let the reading stabilize. f. Rotate VFO B one more tic clockwise to dBV. The number will bounce around 0.0 by maybe +/- 1 dB. Call this the reference level. g. Now tune well off the carrier so that you hear only noise. The dBV number will indicate how many dB the signal has dropped. If it drops 3 dB, your S+N/N ratio is 3 dB. h. Tune the signal back in and make sure the level is back to around 0.0. i. Turn on APF. Using FINE VFO tuning (1-Hz steps), make sure the carrier is peaked as indicated by ear or on the dBV indication. j. Use VFO B to go back to AFV for a few seconds to capture a new relative signal level. Then go back to dBV, which should again show about 0.0 (bouncing a little). k. Tune well off the carrier so you again hear only noise. l. Note the new (negative) dB reading. I just repeated this little test on 80 m with persistent S-6 noise. Here's what I got: Without APF: 1 dB S+N/N With APF: 6 dB S+N/N In fact, having turned APF on, I was now able to find a lot more little carriers :) The secret is to tune slowly. Try hunting for DX with APF on at the low end of 40 or 80 m when the sun is just setting. 73, Wayne N6KR __ 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 -- View this message in context: http://elecraft.365791.n2.nabble.com/Tips-for-using-APF-tp5964773p5965975.html Sent from the [K3] mailing list archive at Nabble.com. __ 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
[Elecraft] APF measurements: FW 4.17 better results by 2 dB
Hello all, Did some measurements on the different frimware versions. This time not a BW-plot but I measured S+N/N ratio's. I have no lab equipment but I have a K3 with dBV measurements, XG2 and the stepped attenuator from elecraft. I measured the difference of the K3 dBV-reading in signal off (=N) and signal on (=S+N) AGC off, mode CW, 400Hz BW and 400Hz Roofing. RX gain of the K3 has been calibrated with XG2 and the K3 utility. This is what I found. _FW 4.25 and 4.21 (both give the same measurement values):_ At MDS level (stepped att on 20dB to reach this level) normal 400 Hz BW: S+N/N = 3dB (as expected, hi) 400 Hz BW + dual PB: S+N/N = 10 dB Now signal level 6dB under MDS (26dB att instead of 20dB): normal 400 Hz BW: S+N/N = 0.5 dB 400 Hz BW + dual PB: S+N/N = 4 dB _FW 4.17_ At MDS level (stepped att on 20dB) normal 400 Hz BW: S+N/N = 3dB (as expected) 400 Hz BW + dual PB: S+N/N = 12 dB (THIS is 2 dB BETTER) Now signal level 6dB under MDS: normal 400 Hz BW: S+N/N = 0.5 dB 400 Hz BW + dual PB: S+N/N = 6 dB (THIS is 2dB BETTER) There are probably people that can measure this far more better than I did with better equipment. But this is what I can come up with here. 73, Arie PA3A Op 27-1-2011 0:52, Barry N1EU schreef: Forget it - full stop! I just ran a spectral analysis of the current firmware versus the very first APF implementation (mcu 4.17 dsp 2.65) from 11/3/10 AND THE PLOTS ARE ABSOLUTELY CONGRUOUS! The APF implementation hasn't changed a bit (or a byte). Have a look: http://n1eu.com/k3apf.gif magenta and green plots are taken with width = 200hz aqua and yellow plots are taken with width = 100hz Barry N1EU __ 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
[Elecraft] APF
Good advice from N1EU and K2AV here, folks! Also, see Wayne's posting: Tips for using APF. I'm a junkie for trying out new firmware, and I can attest that the APF is as good as it ever was-- in fact you need the latest version of it to be sure you have the 5 Hz resolution in the APF shift control. Other pre-requisites for success with APF are using FINE tune (1 Hz frequency resolution) and also shifting the signal frequency (using RIT and APF shift) ) slightly off the ringing frequency. 73, Chuck Guenther NI0C K3 s/n 1061 Barry, N1EU wrote: Forget it - full stop! I just ran a spectral analysis of the current firmware versus the very first APF implementation (mcu 4.17 dsp 2.65) from 11/3/10 AND THE PLOTS ARE ABSOLUTELY CONGRUOUS! The APF implementation hasn't changed a bit (or a byte). Guy, K2AV wrote: May I suggest that one of the necessities of using APF is to throttle back the RF gain so that the AGC is not pushing up the noise to the level of forcing what sounds like ringing. When I'm hearing what sounds like ringing, moving back the RF gain (or removing PRE, or using ATT) will usually clear it up. Using slow AGC usually does NOT help much, but backing off RF gain so the background noise is only moderate or less usually helps. __ 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
Re: [Elecraft] Tips for using APF
Bruce, I already plan to post this there this weekend. Thanks! 73 Greg AB7R On Thu, Jan 27, 2011 at 1:42 AM, Bruce Beford bruce.bef...@myfairpoint.netwrote: Nice write-up on tips for using the APF function, Wayne. Would you please consider adding this to the K3 Operating Tips page on the Elecraft website? (and the manual, as I am sure this will be a recurring area of inquiry...) 73, Bruce, N1RX __ 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 __ 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
[Elecraft] K3: AC Hum on SSB problem
I brought my K3/100/P3 to our winter place this year instead of the old IC-735. The K3 (with MH2 I use with the K2) also came along for convenience. The problem is I'm getting hum on my signal.Unless I maintain my finger on the mic socket (gnd).Any finger works! I've tried: Buying a new power supply, grounding rig to supply, grounding everything to a water pipe downstairs (I'm upstairs), doing the K3 mic plug ground mod, grounding the shield of the MH2 together with the mic ground all with no effect. At the home QTH I don't use the Heil hand mic but two other mics (Heil) that I did not bring with me. Also tried various settings of bias and mic/comp levels. I can hear the hum in test mode, and everyone can hear it when I'm transmitting. Any suggestions would be appreciated. Jay, W6JDB __ 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
[Elecraft] K2 AGC mod information needed
In some time past, someone developed a mod for the K2 AGC which allowed all parameters for the threshold and S-meter response to be varied. The mod used 3 trimpots installed on the Control Board. I need the documentation for this mod if possible. I thought I had most all the K2 documentation or knew where to find it, but this one escaped. Help. 73, Don W3FPR __ 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
[Elecraft] N2CQ QRP Contest Calendar: Jan27 - Feb 25, 2011 (Corrections)
~ N2CQ QRP CALENDAR JANUARY 27 - FEBRUARY 25, 2011 (With Corrections) ~ 40 METER FOXHUNT (CW) *** QRP Contest *** EST: Jan 27, 9 PM to 10:29 PM UTC: Jan 28, 0200z to 0329z Info: http://www.qrpfoxhunt.org/ ~ CQ WW 160-Meter DX Contest (CW) ... QRP Category Jan 28, 2200z to Jan 30, 2200z Rules: http://www.cq160.com ~ REF (French) CW Contest Jan 29, 0600z to Jan 30, 1800z Rules: http://concours.ref-union.org/reglements/actuels/reg_cdfhfdx.pdf ~ UBA DX Contest (Belgian) (SSB) ... QRP Category Jan 29, 1300z to Jan 30, 1300z Rules: http://www.uba.be/sites/default/files/uploads/hf_contests/ubatest_dx.pdf ~ SPAR Winter Field Day (Any Mode) ... Portable Battery Points Jan 29, 1700z to Jan 30, 1700z Rules: http://www.spar-hams.org/contests/winterfd/index.php?pg=2 ~ (Correction) QRP ARCI Fireside Sprint (SSB) ...QRP Contest! Jan 30, 2000z to 2359z Rules: http://www.qrparci.org/ ~ UBA Foxhunt (CW/PSK31/SSB) *** QRP Contest *** Jan 31, 1930z to 2030z Rules: http://www.on5ex.be/foxhunt/foxhunt.html ~ 80 METER FOXHUNT (CW) *** QRP Contest *** EST: Feb 1, 9 PM to 10:29 PM UTC: Feb 2, 0200z to 0329z Info: http://www.qrpfoxhunt.org/ ~ 40 METER FOXHUNT (CW) *** QRP Contest *** EST: Feb 3, 9 PM to 10:29 PM UTC: Feb 4, 0200z to 0329z Info: http://www.qrpfoxhunt.org/ ~ 10-10 Int. Winter Phone QSO Party ... QRP Category Feb 5, 0001z to Feb 6, 2359z Rules: http://www.ten-ten.org/Forms/QSOPartyRulesRevised.pdf ~ Black Sea Cup International (CW/SSB) ... QRP Category Feb 5, 1200z to Feb 6, 1159z Rules: http://bscc.ucoz.ru/index/0-21 ~ EPC WW DX Contest (BPSK63) ... 10W LP Feb 5, 1200z to Feb 6, 1200z Rules: http://www.epcwwdx.srars.org/index.php/contest-rules.html ~ Vermont QSO Party (CW/PH/Dig) ... QRP Category Feb 5, 1300z to Feb 6, 0300z and Feb 6, 1300z to Feb 7, 0300z Rules: http://vtqsoparty.westriverradio.org/ ~ Minnesota QSO Party (All) ... QRP Category Feb 5, 1400z to 2359z Rules: http://www.w0aa.org/ ~ FYBO Winter QRP Field Day (CW/SSB) ... QRP Contest! Feb 5, 1400z to 2400z Rules: http://www.azscqrpions.org ~ AGCW Straight Key QSO Party (CW 80M) ... QRP Category Feb 5, 1600z to 1900z Rules: http://www.agcw.org/en/?Contests:Straight_Key_Party ~ British Columbia QSO Party (CW/PH/Dig) ... QRP Category Feb 5, 1600z to Feb 6, 0759z Rules: http://www.deltaamateurradio.com/bcqsoparty/Delta_Amateur_Radio/Rules.html ~ Delaware QSO Party (All) ... QRP Category Feb 5, 1700z to Feb 6, 2359z Rules: http://www.fsarc.org/qsoparty/qsohome.htm ~ North American Sprint (CW) ... QRP Category Feb 6, z to 0400z Rules: http://www.ncjweb.com/sprintrules.php ~ Adventure Radio Spartan Sprint (CW) ... QRP Contest! EST: Feb 7, 9 PM to 11 PM (First Monday each month) UTC: Feb 8, 0200z to 0400z Rules: http://www.arsqrp.blogspot.com/ ~ UBA Foxhunt (CW/PSK31/SSB) *** QRP Contest *** Feb 7, 1930z to 2030z Rules: http://www.on5ex.be/foxhunt/foxhunt.html ~ 80 METER FOXHUNT (CW) *** QRP Contest *** EST: Feb 8, 9 PM to 10:29 PM UTC: Feb 9, 0200z to 0329z Info: http://www.qrpfoxhunt.org/ ~ NAQCC Straight Key/Bug Sprint (CW) *** QRP Contest *** EST: Feb 8, 8:30 PM to 10:30 PM UTC: Feb 9, 0130Z to 0330Z Rules: http://naqcc.info/contests.html ~ CWops Mini-CWT Test (CW) ... QRP Category Feb 9, 1100z to 1200z and Feb 9, 1900z to 2000z and Feb 10, 0300z to 0400z Rules: http://www.cwops.org/onair.html ~ 40 METER FOXHUNT (CW) *** QRP Contest *** EST: Feb 10, 9 PM to 10:29 PM UTC: Feb 11, 0200z to 0329z Info:
[Elecraft] [K3] KXV3A
I'm looking at purchasing the KXV3A so I can install the MFJ-1026 noise canceling unit between the RX ANT OUT and IN connectors. When this receive path is selected, does the relay on the KXV3A activate and de-activate when keying the transmitter? I wouldn't think so, but I'd like to find out. I like the way the QSK works on this radio. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-KXV3A-tp5966630p5966630.html Sent from the [K3] mailing list archive at Nabble.com. __ 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
Re: [Elecraft] [K3] KXV3A
I'm looking at purchasing the KXV3A so I can install the MFJ-1026 noise canceling unit between the RX ANT OUT and IN connectors. When this receive path is selected, does the relay on the KXV3A activate and de-activate when keying the transmitter? I wouldn't think so, but I'd like to find out. I like the way the QSK works on this radio. Sorry, I forgot to sign this. 73, Art WB8ENE -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-KXV3A-tp5966630p5966646.html Sent from the [K3] mailing list archive at Nabble.com. __ 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
Re: [Elecraft] K3 AC Hum on SSB problem SOLVED
Boy that was quick.My Line In setting was too high. New Alinco Switcher is nice thovery quiet. :-[ Jay, W6JDB __ 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
Re: [Elecraft] K2 AGC mod information needed
The information is now in my hands, thanks to Gary KI4GGX. 73, Don W3FPR On 1/27/2011 9:59 AM, Don Wilhelm wrote: In some time past, someone developed a mod for the K2 AGC which allowed all parameters for the threshold and S-meter response to be varied. The mod used 3 trimpots installed on the Control Board. I need the documentation for this mod if possible. I thought I had most all the K2 documentation or knew where to find it, but this one escaped. __ 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
[Elecraft] K3 Slow power change
K3 Slow power change I've been using WSPR for the past week with my 100 Watt K3 at QRP (5W) and QRPp (100mw to 500mw) power levels. I noticed that if I move the K3 'PWR' power level control either up or down one increment (i.e from 5W to 4W or from 0.5 to 0.6W) the power drops way down and slowly rises. Here is how long it takes the power, as read on the K3 and on a W2 watt meter, to recover after the PWR control is changed slightly. Elapsed time - Power output 0 seconds- 5 Watts 1 seconds- 2 Watts 7 seconds- 3 Watts 19 seconds - 4 Watts 30 seconds - 5 Watts Making a small incremental change in the power output using the PWR control will cause the slow recovery if done before or during a WSPR transmission. Is this normal? 73, Rich - K1HTV K3 #3657 __ 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
Re: [Elecraft] [K2] Just a confirm about KIO2
Pippo, Your assumption is correct - all the function of the KIO2 is present in the KPA100. The only reason one would want to have both the KIO2 and the KPA100 is for those who want to mount the KPA100 remotely in an EC2 enclosure. 73, Don W3FPR On 1/27/2011 6:07 AM, Giuseppe Sorrentino wrote: Hy to all, just a confirm before selling an unused option. I bought in 2010 october a KIO2 to add to my K2/10. On the way i decided to switch directly to K2/100 with KPA100 mounted inside the K2 and will order the kit today. I just want only a confirm that i don't need anymore the KIO2 to be added in my K2 because all the interface is included in KPA100 kit, isn't it??? Then the interface in KPA100 will permit all the connection required to a pc as the KIO2, am i right? Tnx in advance. IZ2NYY Giuseppe Pippo Sorrentino Milano ITALY __ 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 __ 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
Re: [Elecraft] K3 Slow power change
Yes, if you don't have sufficient audio drive. Long-press DISP so that the ALC scale is visible then adjust the input level for a steady 4 - 5 bars reading. (This assumes you are using the DATA mode not USB.) Rich - K1HTV wrote: K3 Slow power change Making a small incremental change in the power output using the PWR control will cause the slow recovery if done before or during a WSPR transmission. Is this normal? - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Slow-power-change-tp5966743p5966854.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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
Re: [Elecraft] [K3] KXV3A
No, QSK is the same when rx ant is selected. This is a great way to use the noise canceler without having to use the crummy, slow t/r relay built into it. On 1/27/2011 7:17 AM, WB8ENE wrote: I'm looking at purchasing the KXV3A so I can install the MFJ-1026 noise canceling unit between the RX ANT OUT and IN connectors. When this receive path is selected, does the relay on the KXV3A activate and de-activate when keying the transmitter? I wouldn't think so, but I'd like to find out. I like the way the QSK works on this radio. Sorry, I forgot to sign this. 73, Art WB8ENE -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ 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
Re: [Elecraft] P3 fixed tune - no marker
As well as a vertical line marker to indicate the tuned frequency in fixed tuning mode, I would like to see a better implementation of the passband indicator. Being in the noise as it tends to be, it's continuously overwritten by the signal trace, making it hard to see. PowerSDR software programmers implemented the passband indicator as a different colored background. This might be a place to start. 73, Dirk -- __ 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
Re: [Elecraft] P3 fixed tune - no marker
Excellent idea on the different colored background Dirk- I believe (from memory) the SDR-IQ does this the same way. Dale W4OP - Original Message - From: Dirk Jorens n6...@charter.net To: elecraft@mailman.qth.net Sent: Thursday, January 27, 2011 11:52 AM Subject: Re: [Elecraft] P3 fixed tune - no marker As well as a vertical line marker to indicate the tuned frequency in fixed tuning mode, I would like to see a better implementation of the passband indicator. Being in the noise as it tends to be, it's continuously overwritten by the signal trace, making it hard to see. PowerSDR software programmers implemented the passband indicator as a different colored background. This might be a place to start. 73, Dirk -- __ 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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.872 / Virus Database: 271.1.1/3406 - Release Date: 01/27/11 02:37:00 __ 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
Re: [Elecraft] K3 Slow power change
On Jan 27, 2011, at 1/277:46 AM, Rich - K1HTV wrote: Here is how long it takes the power, as read on the K3 and on a W2 watt meter, to recover after the PWR control is changed slightly... Is this normal? No, it is not normal. It is not hard to make it go away, however. The power creep is due to insufficient audio drive. My guess of what is happening is that the DSP stage is trying to compensate by applying more gain to counter the low audio, but cannot do it rapidly since it will cause other problems, possibly increased transmit IMD. Take a look at this to find a good audio range that works for different RF power levels: http://homepage.mac.com/chen/Technical/K3/Digital/digital.html What I had found was that a line input audio from the sound card in the region of 250 mV and 350 mV RMS, and a Mic Gain of 6 works for most RF power output levels. In your case, take a look at the 5 Watts table under the PSK31 - Data-A Mode section. It also produces the drive that generates the best transmit IMD. The transmit IMD of the K3 is not that great, and you need all the tricks that you can muster to keep it in check. While your RF Power is creeping, the transmit IMD is probably also quite high (in the measurements above, it shows up as IMD also creeping). You can also use a lower audio drive, but correspondingly more mic gain. However, I like to keep the audio level as high as I can (short of saturating the line input preamp) to keep problems such as ground loops in check. I don't use SSB, but I suspect the same thing can happen there also. With most other rigs, the non-ALC RF output power for AFSK modes is determined by the applied audio drive -- set one control and you have the RF output that you need. In the K3, the RF output is determined by the RF power knob, but you also need to make sure also that there is sufficient audio drive, or you will see the RF power creep problem. 73 Chen, W7AY __ 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
[Elecraft] P3 Feature Request
I'm finding it quite useful to switch between peak hold mode and averaging mode, but the gain setting for the two modes differ by at least 10 dB. The gain setting also varies widely from one antenna to another, and from one band to another. I'd like a function that allows me to store a gain OFFSET between peak and averaging modes -- that is, so that the gain is automatically reduced by a certain amount when I switch to peak hold mode. While it might also be nice to have the P3 remember and automatically recall gain settings per band, my experience so far suggests that there is far too much variation from hour to hour, and from antenna to antenna, for this to be as useful as it might appear. 73, Jim Brown K9YC __ 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
Re: [Elecraft] [K2] Just a confirm about KIO2
Or if he wants to routinely re-install the QRP cover for portable operation 73, Ross N4RP On 1/27/2011 10:58 AM, Don Wilhelm wrote: The only reason one would want to have both the KIO2 and the KPA100 is for those who want to mount the KPA100 remotely in an EC2 enclosure. 73, Don W3FPR -- FCC Section 97.313(a) “At all times, an amateur station must use the minimum transmitter power necessary to carry out the desired communications.” __ 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
Re: [Elecraft] P3 Feature Request
It isn't really a gain issue -- it's an issue between peak signal levels and average levels. Depending on signals, noise and band conditions, that delta could also be quite variable. Grant/NQ5T On Jan 27, 2011, at 11:27 AM, Jim Brown wrote: I'm finding it quite useful to switch between peak hold mode and averaging mode, but the gain setting for the two modes differ by at least 10 dB. The gain setting also varies widely from one antenna to another, and from one band to another. I'd like a function that allows me to store a gain OFFSET between peak and averaging modes -- __ 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
Re: [Elecraft] APF measurements: FW 4.17 better results by 2 dB
All, where I mentioned Dual PB, I mean ofcourse the APF, because that the discussion here. Sorry If that is not clear. 73 Arie PA3A Op 27-1-2011 12:44, Arie Kleingeld PA3A schreef: Hello all, Did some measurements on the different frimware versions. This time not a BW-plot but I measured S+N/N ratio's. I have no lab equipment but I have a K3 with dBV measurements, XG2 and the stepped attenuator from elecraft. I measured the difference of the K3 dBV-reading in signal off (=N) and signal on (=S+N) AGC off, mode CW, 400Hz BW and 400Hz Roofing. RX gain of the K3 has been calibrated with XG2 and the K3 utility. This is what I found. _FW 4.25 and 4.21 (both give the same measurement values):_ At MDS level (stepped att on 20dB to reach this level) normal 400 Hz BW: S+N/N = 3dB (as expected, hi) 400 Hz BW + dual PB: S+N/N = 10 dB Now signal level 6dB under MDS (26dB att instead of 20dB): normal 400 Hz BW: S+N/N = 0.5 dB 400 Hz BW + dual PB: S+N/N = 4 dB _FW 4.17_ At MDS level (stepped att on 20dB) normal 400 Hz BW: S+N/N = 3dB (as expected) 400 Hz BW + dual PB: S+N/N = 12 dB (THIS is 2 dB BETTER) Now signal level 6dB under MDS: normal 400 Hz BW: S+N/N = 0.5 dB 400 Hz BW + dual PB: S+N/N = 6 dB (THIS is 2dB BETTER) There are probably people that can measure this far more better than I did with better equipment. But this is what I can come up with here. 73, Arie PA3A Op 27-1-2011 0:52, Barry N1EU schreef: Forget it - full stop! I just ran a spectral analysis of the current firmware versus the very first APF implementation (mcu 4.17 dsp 2.65) from 11/3/10 AND THE PLOTS ARE ABSOLUTELY CONGRUOUS! The APF implementation hasn't changed a bit (or a byte). Have a look: http://n1eu.com/k3apf.gif magenta and green plots are taken with width = 200hz aqua and yellow plots are taken with width = 100hz Barry N1EU __ 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 __ 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
Re: [Elecraft] APF measurements: FW 4.17 better results by 2 dB
Arie Kleingeld PA3A-2 wrote: I have no lab equipment but I have a K3 with dBV measurements, XG2 and the stepped attenuator from elecraft. Arie I believe you may have some measurement error. I'm sure you know that noise can only be measured correctly with a True RMS responding meter...which is not what is in the K3 dBV meter. This is the only way I can reconcile any difference based on N1EU's measurements: I just ran a spectral analysis of the current firmware versus the very first APF implementation (mcu 4.17 dsp 2.65) from 11/3/10 AND THE PLOTS ARE ABSOLUTELY CONGRUOUS! The APF implementation hasn't changed a bit (or a byte). Have a look: http://n1eu.com/k3apf.gif If the APF filter responses are identical, your S/N measurements should also be identical. http://vk1od.net/measurement/noise/multimeter.htm Conclusions The model and the experimental results both suggest that these and similar multimeter are not capable of single high resolution relative measurements of narrowband audio noise such as measuring S/N ratios or Y factor for noise figure measurement due mainly to the short integration time in combination with narrow bandwidth. It may be possible to improve resolution by taking multiple measurements and calculating the root of the mean of the squares of the measurements, but errors in the summary process and in temporal drift become an issue. 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-tp5963894p5967466.html Sent from the [K3] mailing list archive at Nabble.com. __ 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
Re: [Elecraft] Tips for using APF
And added to the IPhone K3 App please!!! Ken..G0ORH Sent from my iPhone On 27 Jan 2011, at 09:42, Bruce Beford bruce.bef...@myfairpoint.net wrote: Nice write-up on tips for using the APF function, Wayne. Would you please consider adding this to the K3 Operating Tips page on the Elecraft website? (and the manual, as I am sure this will be a recurring area of inquiry...) 73, Bruce, N1RX __ 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 __ 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
Re: [Elecraft] APF measurements: FW 4.17 better results by 2 dB
Page 36 of the K3 owner's manual: AFV shows the true RMS value of receiver AF output (mVp-p), unaffected by AF GAIN control. 73, Scott K9MA On Jan 27, 2011, at 1:17 PM, Bill W4ZV wrote: I'm sure you know that noise can only be measured correctly with a True RMS responding meter...which is not what is in the K3 dBV meter. Scott Ellington Madison, Wisconsin USA __ 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
Re: [Elecraft] Tips for using APF
Absolutely! It will be in the next update, version 1.2 73, Mike ks7d On Jan 27, 2011, at 2:31 PM, Ken Chandler wrote: And added to the IPhone K3 App please!!! Ken..G0ORH Sent from my iPhone On 27 Jan 2011, at 09:42, Bruce Beford bruce.bef...@myfairpoint.net wrote: Nice write-up on tips for using the APF function, Wayne. Would you please consider adding this to the K3 Operating Tips page on the Elecraft website? (and the manual, as I am sure this will be a recurring area of inquiry...) 73, Bruce, N1RX __ 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 __ 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 __ 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
Re: [Elecraft] APF measurements: FW 4.17 better results by 2 dB
FW pre-beta 4.16 release was actually the first to have APF, not 4.17. Here's an interesting comment made shortly APF was finally released to the public. http://elecraft.365791.n2.nabble.com/K3-APF-td5735159.html#a5736718 Steve N4LQ - Original Message - From: Arie Kleingeld PA3A p...@xs4all.nl To: elecraft@mailman.qth.net Sent: Thursday, January 27, 2011 6:44 AM Subject: [Elecraft] APF measurements: FW 4.17 better results by 2 dB Hello all, Did some measurements on the different frimware versions. This time not a BW-plot but I measured S+N/N ratio's. I have no lab equipment but I have a K3 with dBV measurements, XG2 and the stepped attenuator from elecraft. I measured the difference of the K3 dBV-reading in signal off (=N) and signal on (=S+N) AGC off, mode CW, 400Hz BW and 400Hz Roofing. RX gain of the K3 has been calibrated with XG2 and the K3 utility. This is what I found. _FW 4.25 and 4.21 (both give the same measurement values):_ At MDS level (stepped att on 20dB to reach this level) normal 400 Hz BW: S+N/N = 3dB (as expected, hi) 400 Hz BW + dual PB: S+N/N = 10 dB Now signal level 6dB under MDS (26dB att instead of 20dB): normal 400 Hz BW: S+N/N = 0.5 dB 400 Hz BW + dual PB: S+N/N = 4 dB _FW 4.17_ At MDS level (stepped att on 20dB) normal 400 Hz BW: S+N/N = 3dB (as expected) 400 Hz BW + dual PB: S+N/N = 12 dB (THIS is 2 dB BETTER) Now signal level 6dB under MDS: normal 400 Hz BW: S+N/N = 0.5 dB 400 Hz BW + dual PB: S+N/N = 6 dB (THIS is 2dB BETTER) There are probably people that can measure this far more better than I did with better equipment. But this is what I can come up with here. 73, Arie PA3A Op 27-1-2011 0:52, Barry N1EU schreef: Forget it - full stop! I just ran a spectral analysis of the current firmware versus the very first APF implementation (mcu 4.17 dsp 2.65) from 11/3/10 AND THE PLOTS ARE ABSOLUTELY CONGRUOUS! The APF implementation hasn't changed a bit (or a byte). Have a look: http://n1eu.com/k3apf.gif magenta and green plots are taken with width = 200hz aqua and yellow plots are taken with width = 100hz Barry N1EU __ 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 __ 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
Re: [Elecraft] K3 build sequence
Gary, Thank you for the reply. I've downloaded the assembly manual and will look it over. So far I've received 23 responses to my initial message. Lots of good information. The reflector makes it easy go get help when needed. The initial order will be for a K3 and KAT3, then add the KPA3 and optional filters later on. I've decided not to install the General Coverage BPF Module or the 2 meter option and use a 2 meter/440 rig that I already have. 73, Dwayne, KE5EFY __ 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
Re: [Elecraft] APF measurements: FW 4.17 better results by 2 dB
I'll check the APF in 4.16 after work and see if it's any different. Barry N1EU On Thu, Jan 27, 2011 at 7:58 PM, Steve Ellington [via Elecraft] ml-node+5967599-613958550-2...@n2.nabble.comml-node%2b5967599-613958550-2...@n2.nabble.com wrote: FW pre-beta 4.16 release was actually the first to have APF, not 4.17. Here's an interesting comment made shortly APF was finally released to the public. http://elecraft.365791.n2.nabble.com/K3-APF-td5735159.html#a5736718http://elecraft.365791.n2.nabble.com/K3-APF-td5735159.html?by-user=t#a5736718 Steve N4LQ - Original Message - From: Arie Kleingeld PA3A [hidden email]http://user/SendEmail.jtp?type=nodenode=5967599i=0 To: [hidden email] http://user/SendEmail.jtp?type=nodenode=5967599i=1 Sent: Thursday, January 27, 2011 6:44 AM Subject: [Elecraft] APF measurements: FW 4.17 better results by 2 dB Hello all, Did some measurements on the different frimware versions. This time not a BW-plot but I measured S+N/N ratio's. I have no lab equipment but I have a K3 with dBV measurements, XG2 and the stepped attenuator from elecraft. I measured the difference of the K3 dBV-reading in signal off (=N) and signal on (=S+N) AGC off, mode CW, 400Hz BW and 400Hz Roofing. RX gain of the K3 has been calibrated with XG2 and the K3 utility. This is what I found. _FW 4.25 and 4.21 (both give the same measurement values):_ At MDS level (stepped att on 20dB to reach this level) normal 400 Hz BW: S+N/N = 3dB (as expected, hi) 400 Hz BW + dual PB: S+N/N = 10 dB Now signal level 6dB under MDS (26dB att instead of 20dB): normal 400 Hz BW: S+N/N = 0.5 dB 400 Hz BW + dual PB: S+N/N = 4 dB _FW 4.17_ At MDS level (stepped att on 20dB) normal 400 Hz BW: S+N/N = 3dB (as expected) 400 Hz BW + dual PB: S+N/N = 12 dB (THIS is 2 dB BETTER) Now signal level 6dB under MDS: normal 400 Hz BW: S+N/N = 0.5 dB 400 Hz BW + dual PB: S+N/N = 6 dB (THIS is 2dB BETTER) There are probably people that can measure this far more better than I did with better equipment. But this is what I can come up with here. 73, Arie PA3A Op 27-1-2011 0:52, Barry N1EU schreef: Forget it - full stop! I just ran a spectral analysis of the current firmware versus the very first APF implementation (mcu 4.17 dsp 2.65) from 11/3/10 AND THE PLOTS ARE ABSOLUTELY CONGRUOUS! The APF implementation hasn't changed a bit (or a byte). Have a look: http://n1eu.com/k3apf.gif magenta and green plots are taken with width = 200hz aqua and yellow plots are taken with width = 100hz Barry N1EU __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email]http://user/SendEmail.jtp?type=nodenode=5967599i=2 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email]http://user/SendEmail.jtp?type=nodenode=5967599i=3 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/APF-tp5963894p5967599.html To unsubscribe from APF, click herehttp://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_codenode=5963894code=YmFycnkubjFldUBnbWFpbC5jb218NTk2Mzg5NHwtMTUyMTIxNjYw. __ 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
Re: [Elecraft] APF measurements: FW 4.17 better results by 2 dB
Scott Ellington wrote: Page 36 of the K3 owner's manual: AFV shows the true RMS value of receiver AF output (mVp-p), unaffected by AF GAIN control. While that may be true for sinusoidal signals I doubt it holds for noise measurements. Accurate noise measurements require a true RMS-responding meter...not a peak-responding or average-responding meter calibrated to display RMS for sinusoidal waves (only). Many DMMs throw around the term true RMS but are actually NOT true RMS-responding (which is required for accurate noise measurement). True RMS meters are much more expensive and will measure both sinusoidal and non-sinusoidal signals including noise. Most analog DMMS use thermocouples to determine the heating value (or energy content) of signals. There is a way to do true RMS with a DSP but would require a much wider bandwidth (i.e. higher sampling rate) than the K3 uses. 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-tp5963894p5967684.html Sent from the [K3] mailing list archive at Nabble.com. __ 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
Re: [Elecraft] 500Hz 5-pole vs Inrad 500Hz 8-pole?
Thanks to everyone who responded. I've gone with the Inrad 8-pole 500hz filter for now. Expected arrival date for my K3 is next Weds. 73, Ross N4RP On 1/25/2011 9:27 AM, Ross Primrose wrote: Any thoughts on the merits of one vs the other? The 5-pole filter is cheaper, but they need to me matched for diversity receive, does the 8-pole Inrad filter not need to be matched? Is either one/both wide enough for 500Hz Olivia modes? Thanks... 73, Ross N4RP -- FCC Section 97.313(a) “At all times, an amateur station must use the minimum transmitter power necessary to carry out the desired communications.” __ 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
Re: [Elecraft] Tips for using APF
Ken, that iPhone app is nice isn't it? 73 de KE4WY Jim Sent from my Starship On Jan 27, 2011, at 2:31 PM, Ken Chandler g0...@sky.com wrote: And added to the IPhone K3 App please!!! Ken..G0ORH Sent from my iPhone On 27 Jan 2011, at 09:42, Bruce Beford bruce.bef...@myfairpoint.net wrote: Nice write-up on tips for using the APF function, Wayne. Would you please consider adding this to the K3 Operating Tips page on the Elecraft website? (and the manual, as I am sure this will be a recurring area of inquiry...) 73, Bruce, N1RX __ 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 __ 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 __ 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
Re: [Elecraft] K3 build sequence
Thanks Gary, Sounds like several good reasons to add the KXV3A to the initial build. I'll add it to the list. 73, Dwayne, KE5EFY From: Gary Hvizdak [mailto:garyhviz...@cfl.rr.com] Sent: Thursday, January 27, 2011 2:27 PM To: 'Dwayne Rohmer' Subject: RE: [Elecraft] K3 build sequence Hi Dave, I didn't mention that the KPA100 ought to be very simple to add after the rig is built. I say ought to be because even if you buy it at the same time as the K3, you still don't install the module itself until after the base K3 has been calibrated. The only differences in the assembly procedure are when you install the shield, and whether the top cover stiffener is attached to the top cover or to the enclosure. I also didn't mention that the KXV3A would also require significant disassembly to add later, and that besides supporting the internal 2-meter transverter, the it provides several other useful capabilities: . It IF output connector is required should you ever want to get Elecraft's P3 panadaptor. . The RX antenna jack is perfect for connecting signal and noise generators (such Elecraft's mini-modules). . The transverter output connector makes it possible to specify low TX power levels down to 0.1 mW with 0.1 mW resolution. . You would want it if you intend to get Elecraft's PR6, external six meter pre-amp. If you ever change your mind, the General Coverage BPF module would be a snap to add later. Unless you've installed the sub-RX. 73, Gary KI4GGX K3 #2724 __ 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
Re: [Elecraft] 500Hz 5-pole vs Inrad 500Hz 8-pole?
My Inrad 500 Hz filter seems to be centered perfectly. The 250 Hz 8 pole Elecraft badged 8 pole filter seems slightly off center but probably not enough to bother diversity but since I don't have the second receiver, I can't say for sure. I've used the 500 Hz filter for 500 Hz Olivia without any apparent problem. Dunc, W5DC On 1/27/2011 1:30 PM, Ross Primrose wrote: Thanks to everyone who responded. I've gone with the Inrad 8-pole 500hz filter for now. Expected arrival date for my K3 is next Weds. 73, Ross N4RP On 1/25/2011 9:27 AM, Ross Primrose wrote: Any thoughts on the merits of one vs the other? The 5-pole filter is cheaper, but they need to me matched for diversity receive, does the 8-pole Inrad filter not need to be matched? Is either one/both wide enough for 500Hz Olivia modes? Thanks... 73, Ross N4RP __ 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
Re: [Elecraft] Tips for using APF
Yes it is, an excellent App indeed. I have all 3 Elecraft manual Apps, wouldn't be without then. I can actually take my k3 to field day, without the worry of my mates nicking my manuals for further study in the privy!! Ken..G0ORH Sent from my iPhone On 27 Jan 2011, at 20:35, Jim pywac...@insightbb.com wrote: Ken, that iPhone app is nice isn't it? 73 de KE4WY Jim Sent from my Starship On Jan 27, 2011, at 2:31 PM, Ken Chandler g0...@sky.com wrote: And added to the IPhone K3 App please!!! Ken..G0ORH Sent from my iPhone On 27 Jan 2011, at 09:42, Bruce Beford bruce.bef...@myfairpoint.net wrote: Nice write-up on tips for using the APF function, Wayne. Would you please consider adding this to the K3 Operating Tips page on the Elecraft website? (and the manual, as I am sure this will be a recurring area of inquiry...) 73, Bruce, N1RX __ 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 __ 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 __ 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
Re: [Elecraft] APF measurements: FW 4.17 better results by 2 dB
Bill, Thanks for your added comments. As I said, I do not have the lab equipment to do this. But there are people in this group that have and can measure far better than I. The APF (for me) is not about selectivity. I use it when digging into the noise and get a better copy of weak signals. That is why I tried to measure S+N/N ratio the best I could. So if it is not exactly 2 dB (it is not), I donot care. I just measured that there was a _difference_ that 4.17 did a better job on s+n/n ratio. So if one of the pro's can measure this more scientifically, that would be very enlighting. If this s+n/n ratio and the passband are the same, then we can stop this discussion about the apf. :-) 73 Arie Conclusions The model and the experimental results both suggest that these and similar multimeter are not capable of single high resolution relative measurements of narrowband audio noise such as measuring S/N ratios or Y factor for noise figure measurement due mainly to the short integration time in combination with narrow bandwidth. It may be possible to improve resolution by taking multiple measurements and calculating the root of the mean of the squares of the measurements, but errors in the summary process and in temporal drift become an issue. 73, Bill __ 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
Re: [Elecraft] APF measurements: FW 4.17 better results by 2 dB
Hi, Doing true RMS over the selected passband is very easy to do with DSP and I have no reason to doubt that the K3 dBV meter is a very close approximation to true RMS even on signals that are far from sinusoidal (such as noise). Analog is a different story and I agree that there are many false claims to be true RMS. AB2TC - Knut Bill W4ZV wrote: snip While that may be true for sinusoidal signals I doubt it holds for noise measurements. Accurate noise measurements require a true RMS-responding meter...not a peak-responding or average-responding meter calibrated to display RMS for sinusoidal waves (only). Many DMMs throw around the term true RMS but are actually NOT true RMS-responding (which is required for accurate noise measurement). True RMS meters are much more expensive and will measure both sinusoidal and non-sinusoidal signals including noise. Most analog DMMS use thermocouples to determine the heating value (or energy content) of signals. There is a way to do true RMS with a DSP but would require a much wider bandwidth (i.e. higher sampling rate) than the K3 uses. 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-tp5963894p5968012.html Sent from the [K3] mailing list archive at Nabble.com. __ 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
Re: [Elecraft] APF measurements: FW 4.17 better results by 2 dB
Within the band-limited audio passband of the K3, the RMS metering is very accurate. The algorithm is: 1) measure and square each reading 2) sum with the previous readings (accumulate) 3) do this for 500 ms or 1 sec 4) divide the sum by the number of samples taken 5) compute the square root 6) clear the accumulator It tracked my HP 34401A to within 0.1 dB during measurements taken while developing and validating the DSP code. 73, Lyle KK7P AFV shows the true RMS value of receiver AF output (mVp-p), unaffected by AF GAIN control. While that may be true for sinusoidal signals I doubt it holds for noise measurements... There is a way to do true RMS with a DSP but would require a much wider bandwidth (i.e. higher sampling rate) than the K3 uses. __ 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
[Elecraft] Pixel Technologies
Fellow Elecraft K3 Owners, Wantabees, and Others. Last year I went to Dayton where I ordered the XRX3 second receiver and some 8 pole filters so I could try diversity receive. Just around the corner or so from them was a new vender I had never heard of called Pixel Technologies and I spent some time talking and getting a demonstration of their newly announced product release the Model RF PRO-1A. It is a New Shortwave Magnetic Loop Antenna for Improved Reception and Noise Rejection Shielded Active Broadband Magnetic Moebius Loop Antenna - MSRP: 399.99 and their Website:pixelsatradio. It took a while for me to take delivery of the antenna and several months went by before I tried it and honestly was not very impressed with with the results so I contacted them on the telephone. I explained the antenna was noisy and did not receive anywhere as good as my dipole at 34 feet on 75 meters. I was informed somehow I had not been notified but some new designs had been implemented and they wanted to send them out and have me try them. They told me if I was not satisfied, they would refund my full purchase price. A few weeks later I installed the new parts to the antenna. The results are simply amazing. This little antenna at ten feet off the ground out receives my dipole on 40 and 75 meters at 34 feet and is much quieter to listen too. As a matter of fact I now listen to it more than the dipole simply because its nicer to listen too and receives better. This antenna has electronic circuits that are housed in weather tight enclosures and the circuit boards are conformal coated. The power supply has a RCA connector to connect to the amp key output so power is cut off to it when transmitting--a very handy thing is using power to protect the front end of the K3. I have not tried it on other bands but expect the results would be just as good. It would also make a great antenna for SWL do to its very small size and performance. There is no way I am going to give up on this little gem. I contacted Wayne Burdick at Elecraft and told him how happy I was with the K3, the XRX3, and the RF PRO-1A combination using diversity receive and how the results were spectacular. I also told him if anyone wanted a great suggestion on a antenna for diversity mode to go with the second receiver in the K3 this antenna was a great performer. He responded back stating Sounds like a great antenna! Would you mind posting about it to our email reflector? We don't sell any competing products, so I'd have no qualms about having you pitch it there. Glad you like the sub-RX, too. It's a great tool. So there you have it folks. For those of you who decide to look into this I recommend it whole heartedly and if you do not like it, the company offers a 30 money back guarantee. I offer this advise to fellow hams and have so affiliation whatsoever with Pixel Technologies or Elecraft other than being a very satisfied customer. __ 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
Re: [Elecraft] APF measurements: FW 4.17 better results by 2 dB
4.16 APF has the same response curve as all the other versions. BArry N1EU On Thu, Jan 27, 2011 at 8:16 PM, Barry N1EU barry.n...@gmail.com wrote: I'll check the APF in 4.16 after work and see if it's any different. Barry N1EU On Thu, Jan 27, 2011 at 7:58 PM, Steve Ellington [via Elecraft] ml-node+5967599-613958550-2...@n2.nabble.comml-node%2b5967599-613958550-2...@n2.nabble.com wrote: FW pre-beta 4.16 release was actually the first to have APF, not 4.17. Here's an interesting comment made shortly APF was finally released to the public. http://elecraft.365791.n2.nabble.com/K3-APF-td5735159.html#a5736718http://elecraft.365791.n2.nabble.com/K3-APF-td5735159.html?by-user=t#a5736718 Steve N4LQ - Original Message - From: Arie Kleingeld PA3A [hidden email]http://user/SendEmail.jtp?type=nodenode=5967599i=0 To: [hidden email]http://user/SendEmail.jtp?type=nodenode=5967599i=1 Sent: Thursday, January 27, 2011 6:44 AM Subject: [Elecraft] APF measurements: FW 4.17 better results by 2 dB Hello all, Did some measurements on the different frimware versions. This time not a BW-plot but I measured S+N/N ratio's. I have no lab equipment but I have a K3 with dBV measurements, XG2 and the stepped attenuator from elecraft. I measured the difference of the K3 dBV-reading in signal off (=N) and signal on (=S+N) AGC off, mode CW, 400Hz BW and 400Hz Roofing. RX gain of the K3 has been calibrated with XG2 and the K3 utility. This is what I found. _FW 4.25 and 4.21 (both give the same measurement values):_ At MDS level (stepped att on 20dB to reach this level) normal 400 Hz BW: S+N/N = 3dB (as expected, hi) 400 Hz BW + dual PB: S+N/N = 10 dB Now signal level 6dB under MDS (26dB att instead of 20dB): normal 400 Hz BW: S+N/N = 0.5 dB 400 Hz BW + dual PB: S+N/N = 4 dB _FW 4.17_ At MDS level (stepped att on 20dB) normal 400 Hz BW: S+N/N = 3dB (as expected) 400 Hz BW + dual PB: S+N/N = 12 dB (THIS is 2 dB BETTER) Now signal level 6dB under MDS: normal 400 Hz BW: S+N/N = 0.5 dB 400 Hz BW + dual PB: S+N/N = 6 dB (THIS is 2dB BETTER) There are probably people that can measure this far more better than I did with better equipment. But this is what I can come up with here. 73, Arie PA3A Op 27-1-2011 0:52, Barry N1EU schreef: Forget it - full stop! I just ran a spectral analysis of the current firmware versus the very first APF implementation (mcu 4.17 dsp 2.65) from 11/3/10 AND THE PLOTS ARE ABSOLUTELY CONGRUOUS! The APF implementation hasn't changed a bit (or a byte). Have a look: http://n1eu.com/k3apf.gif magenta and green plots are taken with width = 200hz aqua and yellow plots are taken with width = 100hz Barry N1EU __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email]http://user/SendEmail.jtp?type=nodenode=5967599i=2 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email]http://user/SendEmail.jtp?type=nodenode=5967599i=3 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/APF-tp5963894p5967599.html To unsubscribe from APF, click herehttp://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_codenode=5963894code=YmFycnkubjFldUBnbWFpbC5jb218NTk2Mzg5NHwtMTUyMTIxNjYw. __ 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
[Elecraft] K2/10 for Sale
For Sale: K2/10, SN 26XX. Radio is up to date on firmware and upgrades other than a few pieces of the basic K2 A to B mods. The options installed are the K160RX, KNB2, KSB2, KDSP2 and KAT2. Complete alignment and calibration just completed by Don Wilhelm W3FPR..documentation can be provided Price $900 plus shipping (will ship International). Interested persons contact me offline please at: cd_w...@nc.rr.com Cliff Ward W2TL __ 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
Re: [Elecraft] APF measurements: FW 4.17 better results by 2 dB
Barry N1EU wrote: 4.16 APF has the same response curve as all the other versions. Q.E.D. If it has an identical response curve it has identical S/N performance. Anything else is either differences in noise conditions or human imagination. 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-tp5963894p5968319.html Sent from the [K3] mailing list archive at Nabble.com. __ 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
Re: [Elecraft] APF measurements: FW 4.17 better results by 2 dB
But Bill, I had a sage manager many years ago who often stated Perception is 99% of reality. Being of a scientific mind, I had my doubts at the time thinking people will be convinced by the facts of science. In later years, I have mellowed and now agree with that manager. Perception IS 99% of reality! 73, Don W3FPR On 1/27/2011 7:28 PM, Bill W4ZV wrote: Barry N1EU wrote: 4.16 APF has the same response curve as all the other versions. Q.E.D. If it has an identical response curve it has identical S/N performance. Anything else is either differences in noise conditions or human imagination. 73, Bill __ 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
[Elecraft] K2 and WINMOR
Is anybody running WINMOR with a K2 and SignaLink? If so what are your transmitter settings in WINMOR and how are you keying the K2? If I try using my com port for PTT it does key, but it also steps the radio to the mext mode, which is problematic. Any insight would be appreciated. 73 Chuck, NN7U __ 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
Re: [Elecraft] APF measurements: FW 4.17 better results by 2 dB
Don Wilhelm-4 wrote: I had a sage manager many years ago who often stated Perception is 99% of reality. Being of a scientific mind, I had my doubts at the time thinking people will be convinced by the facts of science. In later years, I have mellowed and now agree with that manager. Perception IS 99% of reality! OK let's follow your logic. Let's assume Elecraft now wants to duplicate the magical 4.16 APF performance. The firmware code is identical according to the author and the frequency response curve is identical. What do you suggest they do? Sprinkle pixie dust? 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-tp5963894p5968368.html Sent from the [K3] mailing list archive at Nabble.com. __ 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
Re: [Elecraft] APF measurements: FW 4.17 better results by 2 dB
Bill, I am not suggesting Elecraft do anything other than the explanations that have already transpired. Yet even with such dialog and tests that say Q. E. D., there will be many who remain unconvinced, and will want to stick with the old version because it is better. They will not be convinced until they have received countering information with their own ears. There may be other factors involved -- although there were no intentional changes in the DSP firmware to change the noise response of the K3, that is one possible factor that comes to mind. Another factor is operator induced -- it is known that the 50 Hz filter has some ringing which will change minute by minute with band noise. Add APF on top of that, and the perception from one moment to another can be all over the map. I believe the test data, and look seriously for other factors that may influence the perception of better or worse when confronted with the facts that things (like APF) are equal. I believe Wayne has explained that there are many variables (QSB, band noise) that can influence the final APF response, and to my mind, that is sufficient. But there will be those who will remain unconvinced and will continue to use 4.16 because the APF is better. There is no cure for perceptions - it is just something to be accepted. Pixie dust may help, measurements will not. 73, Don W3FPR On 1/27/2011 7:55 PM, Bill W4ZV wrote: Don Wilhelm-4 wrote: I had a sage manager many years ago who often stated Perception is 99% of reality. Being of a scientific mind, I had my doubts at the time thinking people will be convinced by the facts of science. In later years, I have mellowed and now agree with that manager. Perception IS 99% of reality! OK let's follow your logic. Let's assume Elecraft now wants to duplicate the magical 4.16 APF performance. The firmware code is identical according to the author and the frequency response curve is identical. What do you suggest they do? Sprinkle pixie dust? 73, Bill __ 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
Re: [Elecraft] K2 and WINMOR
Chuck, That sounds like WINMOR is issuing mode commands along with the TX command that are not compatible with the K2 Programmers Reference. I would suggest you take that up with the WINMOR author. If he states that WINMOR implements K2 support, that should be brought to his attention. If he is only implementing Kenwood compatibility, there are some command sequences that work OK with Kenwoods, but do not work with the K2. Compatible does not mean equal. In the meantime, you might want to consider another way to initiate transmit on the K2. The simple one transistor keying interface comes to mind. 73, Don W3FPR On 1/27/2011 7:51 PM, 2Cents wrote: Is anybody running WINMOR with a K2 and SignaLink? If so what are your transmitter settings in WINMOR and how are you keying the K2? If I try using my com port for PTT it does key, but it also steps the radio to the mext mode, which is problematic. Any insight would be appreciated. 73 Chuck, NN7U __ 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
[Elecraft] K3 Feature Request
10 Minute Timer - Sound, 'Beep, Beep, Beep.' Alternate, Flash or Dim Display and/or Panel Lights. Reset Timer. Countdown on clock display. 73, Dick - KA5KKT __ 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
Re: [Elecraft] K3 Feature Request
Why would you want this? On Thu, 2011-01-27 at 21:30 -0500, Edward Dickinson, III wrote: 10 Minute Timer - Sound, 'Beep, Beep, Beep.' Alternate, Flash or Dim Display and/or Panel Lights. Reset Timer. Countdown on clock display. 73, -- 73 Brendan EI6IZ __ 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
Re: [Elecraft] K3 Feature Request
-Original Message- From: Edward Dickinson, III [mailto:edd...@windstream.net] Sent: Thursday, January 27, 2011 9:50 PM To: 'elecraft@mailman.qth.net' Subject: Re: [Elecraft] K3 Feature Request ...as a reminder for requisite station identification. 73, Dick - KA5KKT Why would you want this? On Thu, 2011-01-27 at 21:30 -0500, Edward Dickinson, III wrote: 10 Minute Timer - Sound, 'Beep, Beep, Beep.' Alternate, Flash or Dim Display and/or Panel Lights. Reset Timer. Countdown on clock display. 73, -- 73 Brendan EI6IZ __ 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
[Elecraft] P3 deaf ??
Hi all, Used the P3 for the first time last weekend during the BARTG RTTY contest. I did notice that all signal levels shown by the P3 were very low, for instance with a noise level of around s3 on the K3 and a RTTY signal in the clear at S5-6 there was no trace on the P3 on either the waterfall or scope. Signals that are peaking S9 +20 on the radio with no preamp are around –91dbm (S6) on the P3. I’ve checked cables etc and K3 had the IF output mod done. Any ideas as I see people saying you can see signals on the waterfall sometimes before you can hear them, not so the case here. Thanks Jim __ 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
[Elecraft] K3 APF comparison, HR2DMR
I just updated the radio this evening, tried out the APF feature -- it seems to really ROCK! I recorded HR2DMR with and without the APF... here's the file. https://bmoran.onehub.com/n9adg/pages/home/content_items/show/b343e3684ee387647b9f8cedf6d70b3f9c2aa8ab/HR2DMR_APF_COMP.mp3 *(shorter link: https://bmoran.onehub.com/d/mboq/) Can't wait to try it with say VP8ORK... __ 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
Re: [Elecraft] K3 Feature Request
You're kidding, right? On 1/27/2011 7:30 PM, Edward Dickinson, III wrote: 10 Minute Timer - Sound, 'Beep, Beep, Beep.' Alternate, Flash or Dim Display and/or Panel Lights. Reset Timer. Countdown on clock display. 73, Dick - KA5KKT __ 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 __ 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
Re: [Elecraft] K3 Feature Request
I sure hope so! Gary On Fri, Jan 28, 2011 at 5:34 PM, David Gilbert xda...@cis-broadband.com wrote: You're kidding, right? On 1/27/2011 7:30 PM, Edward Dickinson, III wrote: 10 Minute Timer - Sound, 'Beep, Beep, Beep.' Alternate, Flash or Dim Display and/or Panel Lights. Reset Timer. Countdown on clock display. 73, Dick - KA5KKT __ 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 __ 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 -- Gary VK4FD - Motorhome Mobile http://www.qsl.net/vk4fd/ K3 #679 For everything else there's Mastercard!!! __ 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
