Re: [Elecraft] Separate list for K3

nabble archive is fantastic! If you don't want email filling your inbox and want a well-organized view of the archives, take a minute to look at this and then register your email address so you can post. There is no excuse (except ignorance or laziness) for anyone not to use this as an alt

Re: [Elecraft] K3 or SDR-5000?

manufacturers would give us credit for a little more intelligence than their marketing departments and advertising agencies seem to have. 73, Bill W4ZV -- View this message in context: http://www.nabble.com/K3-or-SDR-5000--tp14478034p14486447.html Sent from

Re: [Elecraft] K3 performance - soft keying and linear key output

st set 7-8 ms which generates an actual waveform with Rise/Fall in the area of 4 ms. Kudos to Elecraft for NOT shipping the K3 in a default state that is guaranteed to cause key clicks! 73, Bill W4ZV -- View this message in cont

[Elecraft] G4AON Review of his K3

Well done Dave! http://www.astromag.co.uk/k3/ 73 & Happy New Year! Bill W4ZV -- View this message in context: http://www.nabble.com/K3-roofing-filter-choices-tp14565765p14567010.html Sent from the Elecraft mailing list archive at Nabble.com. _

Re: [Elecraft] Q about the K3 rear panel

ou want RX IN/OUT, you need a KXV3. It's wrong to think of it only as a Transverter option. Think of it as an RX ANT - IF OUT - Transverter option. 73, Bill W4ZV -- View this message in context: http://www.nabble.com/Q-about-the-K3-rear-panel-tp14577141p14577216.html Sent from t

Re: [Elecraft] K3's and VP6DX

we are very confident that we did choose the right radio." http://ducie2008.dl1mgb.com/news/index.php 73, Bill W4ZV -- View this message in context: http://www.nabble.com/K3%27s-and-VP6DX-tp14574250p14579263.html Sent from the Elecraft mailing

Re: [Elecraft] Computer Noise ruining 20 & 30m

e from Digi-key, Mouser, Newark, etc, etc. > Corcom 6EF1 is what you want. About $10 in single units (about half that on eBay for 5 units). This problem has been around for over 10 years but the manufacturers keep shipping junk. http://lists.contesting.com/archives//html/RFI/1998-05/msg000

RE: [Elecraft] K3 Operating Tip: How to do RIT (sortof) with the "BIG"knob

knob to tune your RX while TX freq is locked. This would be really nice for running in contests. Piexx did this in their TS-930S digital board upgrade many years ago and I've suggested it to Elecraft. 73, Bill W4ZV -- View this message in context: http://www.nabble.com/K3-Operating-Ti

Re: [Elecraft] How to do RIT (sort of) with the "BIG" knob

Ken Kopp wrote: > > > I can set ... and LOCK ... a frequency in the main VFO A > knob / display and then move it to the VFO B knob / display > using the A/B button. Then, by activating the SPLIT function > I think I have what you're suggesting. > > Yes...it just takes more keystrokes, but

Re: [Elecraft] Err TXF

it by setting "FLx BW" lower than 2.7k. FYI, I tried using the 1.0k 8-pole on CW (before this option was locked out by firmware) and I got a *worse* key click report than when using the 2.7k. So there are good reasons behind Elecraft's lockouts. 73, Bill W4ZV -- View this mess

Re: [Elecraft] Err TXF

G4ILO wrote: > > Perhaps so, but it creates a problem if my filter is actually a bit narrower than 2.7KHz. There was actually "2.39KHz" written on my filter PCB, as well as the sticker specifying the offset. I don't know if this is the actual bandwidth that was measured when my filter was test

Re: [Elecraft] Err TXF

G4ILO wrote: > > > > Bill W4ZV wrote: >> >> I seriously doubt it since the 5-pole has been measured at >2.9 kHz (6 dB >> BW). It's easy enough to check without unnecessary speculation. >> > Unnecessary speculation? Unnecessary as far as yo

Re: [Elecraft] Err TXF

Bill W4ZV wrote: > > All you need is a steady signal source like the XG1 since there's a meter > internal to the K3 with 0.1 dB resolution. Just remember to set WIDTH to > maximum (which takes the DSP filter out of the equation), set the internal > meter to 0.0 dBV in th

RE: [Elecraft] [K3] QST Labs review? -- Pool?

Rob Sherwood will publish a detailed technical evaluation long before ARRL (sans fluff). Rob also is not afraid of offending advertisers by identifying genuine problems. ARRL's Expanded Test Reports are very worthwhile but I would rather read good fiction than most QST product reviews. :-) 7

Re: [Elecraft] [K3] QST Labs review? -- Pool?

mvolstad wrote: > > Has Rob actually commited to publishing a detailed technical evaluation of > the K3? If so, I believe that will be a first. I have searched his web > site and cannot find detailed evaluations of *any* current HF rigs. His > tables of receiver performance numbers are very con

Re: [Elecraft] K3: Strange VFO Behavior

s as A/B but you are switching the BPFs correctly. 73, Bill W4ZV -- View this message in context: http://www.nabble.com/K3%3A-Strange-VFO-Behavior-tp14940134p14944317.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mail

Re: [Elecraft] TRANSLATION: K3 Subreceiver Status Update (KRX3 option)

Not in my opinion, but 10-15 dB IMD difference would be worth it to me even if the prices were reversed! 73, Bill W4ZV -- View this message in context: http://www.nabble.com/TRANSLATION%3A-K3-Subreceiver-Status-Update-%28KRX3-option%29-tp14

Re: [Elecraft] TRANSLATION: K3 Subreceiver Status Update

Bill W4ZV wrote: > > > > HB9DRV: > > >The delay in the sub-RX is making me reconsider whether to buy > the sub-RX and instead just buy a second basic K3 to use for RX. > > I'm having similar thoughts since I already ordered > a second K3 i

Re: [Elecraft] K3/K3S noise blanker performance greatly enhanced (at my QTH) -- need testers

here a workaround for this or am I doing something wrong? 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-K3S-noise-blanker-performance-greatly-enhanced-at-my-QTH-need-testers-tp7613491p7613631.html Sent from the Ele

Re: [Elecraft] APF (audio peaking filter) on the K3/K3S/KX3

ath may help visualize what I'm doing: signal >> 200 Hz XFIL >> 400 Hz DSP >> 30 Hz APF >> ear/brain 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-audio-peaking-filter-on-the-K3-K3S-KX3-tp7613416p7613

Re: [Elecraft] K3/K3S noise blanker performance greatly enhanced (at my QTH) -- need testers

TX filter than 2.7/2.8 because the firmware/software will not allow it (even for CW). I know because I tried to do that years ago in an attempt to further cleanse my CW signal. Now the KSYN3A does a great job of that anyway. When I do another experiment with the 2.1, I'll report the res

Re: [Elecraft] K3 Configuration to KS3

calibration constants and items unique to the K3. I doubt Elecraft has thought of this but it would be nice if possible. If I were you I'd go through the K3 CONFIG settings, write everything down and then manually duplicate into the K3S. Also don't forget the MENU settings. 73, Bill W4ZV

Re: [Elecraft] latest K2 serial #?

mod: http://www.raunvis.hi.is/~matti/TF3MA/sidetone_tf3ma.html KT5X addendum: http://mailman.qth.net/pipermail/elecraft/2006-November/061425.html 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/latest-K2-serial-tp7615395p7615446.html Sent from the Elecraft mailing list

Re: [Elecraft] latest K2 serial #?

tone quality. The original design had so much harmonic content that it was difficult to zero beat stations by ear. 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/latest-K2-serial-tp7615395p7615492.html Sent from the El

Re: [Elecraft] com0com N1MM and CWSkimmer

ld Pentium IV (2.8 GHz) XP CPU and Audiophile 2496 typically run at about 20-30% CPU utilization and I've had no problems with both N1MM and Skimmer getting frequency information, as you can see in the videos. 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n

Re: [Elecraft] KX3 single lever key

KH7T wrote > > Is anyone contemplating a single lever key for the KXPD3 mounting? > No KX3 here yet but I made one for my ATS-3: http://www.youtube.com/watch?v=wutov8MVr6Q Maybe this will give you some ideas. 73, Bill W4ZV -- View this message in context: http://elecraft.

Re: [Elecraft] Unhappy With Your KX3?

Yaesu frequently advertise features which will NEVER be implemented (e.g. claiming roofing filter bandwidths twice as narrow as they actually were...IC7800/7700, FT2000/9000, etc). Elecraft does not do that. 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabbl

Re: [Elecraft] K3 - reliability

Bill wrote > > Needless to say, I do question the K3's > reliability factor and would be very interested in the particulars of > other failures requiring a return to the factory for warranty repairs. > I've had 5 different K3s over 3.5 years and no failures necessitated a return to the factor

Re: [Elecraft] SDR_Sound_Cards

K5DNL wrote > > Everyone seems to be using the Delta 44 sound card for > > SDR receivers, is there something supper about the Delta 44? > > I noticed there are other 24 bit sound cards, > > Will any of those cards work? > > I don’t need a USB sound card, PCI slot would be fine. > OFF line wou

Re: [Elecraft] [K3] Keyer Pause - Begali's Poor Service

e relegated my Begali Mono to backup status in favor of an N3ZN ZN-SL which works perfectly and has a much better tactile feel. 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Keyer-Pause-tp7562097p7562178.html Sent from the

Re: [Elecraft] [KX3] Question: KX3 and K3 Exclusive-Or ?

Phil Hystad-3 wrote > > > It could be that they were merely very minor differences due to the way > that the KX3 panel is different but I thought that there were a few other > things that were different too. Now, I can't specifically remember what > they were so I will have to watch the video a

Re: [Elecraft] Swains Island

Bob K6UJ wrote > > I think that Icom is getting tired of seeing the K3's being the preferred > rig for dxpeditions and decided > to provide the IC-7600's for the Swains Island dxpedition in hopes of > improving their image. :-) > >From the scrolling banner on the NH8S website homepage: "..

Re: [Elecraft] [K3] Phase Noise / CW Key Clicks

me to less than ~5ms can cause clicks which, as you said above, can be useful in contests to keep others away from your run frequency. Kudos to Wayne for not allowing the user to adjust this parameter and therefore keeping our K3s cleaner than other rigs. 73, Bill W4ZV -- View this m

Re: [Elecraft] K3 - Filter suggestions for new builder

tched to the stock 2.7k set to DSP 2.0k for the remainder of the contest (won USA SOSB/10 by 30% over the next highest score). I've since installed a 2.1k which I expect will work better for high run rates...will report back after October 28. 73, Bill W4ZV -- View this message in context

Re: [Elecraft] TR : Down or Up conversions designs

agine with a little work that Iain's approach could be adapted other loggers besides N1MM. This eliminates the need to press the K3 buttons and I prefer the simplicity of using the K3DVR versus hassling with computer soundcards. 73, Bill W4ZV -- View this message in context: http://e

Re: [Elecraft] K3 Problem

Dick, WN3R wrote > With compression above 30 Wow! The max I ever use is 24. Microphones may vary but CMP=30 seems awfully high. 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Problem-tp7564622p7564650.html Sent from the Elecraft mailing l

[Elecraft] Elecraft's Races

>From some recent posts: K2 #7375 K3 #6884 KX3 #2457 1. When will the K3 catch the K2? 2. When will the KX3 catch the K3? The good times roll on at Elecraft. Which shows what great product design, good marketing and outstanding product support will do...even in a bad economy! Too bad mor

Re: [Elecraft] 3Y0I Bouvet using K3's?

AE5X: Anyone know if the upcoming (later this month?) Bouvet team is using Elecraft gear? I don't know but Dom 3Z9DX bought a K3 from me in May 2017. I had upgraded to an 86XX S/N and sold him my 44XX S/N. 73, Bill W4ZV -- Sent from: http://elecraft.365791.n2.nabbl

Re: [Elecraft] KSYN3A Synthesizer

especially true on 160 where local signals are extremely strong (as in K0RF being line-of-sight about 2 miles away). Thanks for posting those results! 73, Bill W4ZV -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list

Re: [Elecraft] Elec raft, will I ever own one ?

of money for many of us, but a bargain compared to buying a brand new K3S, and you're getting about 95% of the performance. BTW I have no connection with either of the sellers above. 73 & GL, Bill W4ZV -- Sent fro

Re: [Elecraft] FW: New customer message on December 14, 2018 at 02:22 AM

audio quality mod. (not needed for CW). I don't have time to find links for these but you should be able to find them in a keyword search. They are all free and simple to install once you have the parts. 73, Bill W4ZV -- Sent from: http://elecraft.365791.n2.nabble.com/ ___

[Elecraft] TF3MA sidetone mod for K2

SN 3000 with the A to B kit, then you have the > same sidetone wave shaping as the newer K2s. > > I am not familiar with the TF3MA LP audio cutoff nor the JG1XLZ KSB2 > audio quality mod, and cannot comment. > > 73, > Don W3FPR > > On 1/6/2019 8:20 AM, Bill W4ZV wrot

Re: [Elecraft] New DSP Idea

ion introduces constantly shifting relative phase changes). 73, Bill W4ZV P.S. The bottom 2 plots in the link below show what can be done by phasing two parallel staggered Beverages: http://users.vnet.net/btippett/new_page_10.htm -

Re: [Elecraft] Possible OT: Bouvet Island again

ab2tc wrote > PS. I am guessing if they have any Elecraft equipment we would have heard > about it here. I don't know but Dom 3Z9DX bought a K3 from me in May 2017. I had upgraded to an 86XX S/N and sold him my 47XX S/N. 73, Bill W4ZV -- Sent from: http://elecraft.365791.n2

[Elecraft] K3 Note: "The KFL3A-200 is currently unavailable."

Anyone know the details? 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Note-The-KFL3A-200-is-currently-unavailable-tp7607115.html Sent from the Elecraft mailing list archive at Nabble.com

Re: [Elecraft] [K2] LiFePO4 replacement for internal SLA battery in K2

, so it weighs 86% less and probably has sufficient life for most of my operations. I'd be interested to hear any comments from others about any leakage problems with internal batteries. 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-LiFePO4-repl

Re: [Elecraft] [K2] LiFePO4 replacement for internal SLA battery in K2

rger (available for around $20) to properly charge and store LiPOs. You cannot beat the energy density (mAH per ounce) of a LiPO but they DO REQUIRE proper care. 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/K

Re: [Elecraft] Issue Resolved K3 Voltage on TX

If you operate SSB, you might want to run higher voltage at the K3 terminals (e.g. at 14.5V which is below the 15.0V spec) to minimize IMD. This was discussed extensively in 2009 but the following by W4TV is a good summary: > Is there something critical in the rad

Re: [Elecraft] didn't make myself very clear :(

"So very few controls would actually be needed. Come to think of it, an operator wouldn't even be needed!" BINGO! And how much fun would that be? Which is exactly why I don't care for the computer-to-computer modes. 73, Bill W4ZV -- View this message in context: ht

Re: [Elecraft] Default K3 transmit delay may be too short for slow QRO amplifiers

RX). Most of these relays are slow (and cheap) open frame relays. With a little practice, I can listen between words (not characters) using a footswitch. And I have NEVER burned up any TX relays in my amps. 73, Bill W4ZV -- Sent from: http://elecraft.365791.n2.nabble.

Re: [Elecraft] [K3] Add to NTCH and APF

Hi Petr, Have you tried Save and then Restore Config in the K3 Utility? I know this is somewhat inconvenient but it might work (don't know if it will but worth a try). 73, Bill W4ZV -- Sent from: http://elecraft.365791.n2.nabbl

Re: [Elecraft] Diversity Receive as Noise Canceling?

la3rk wrote: > > Check the following pages www.pa0sim.nl. As far as I can tell this > gentleman has done exactly what you suggest, ie he used two K2 receivers > phaselocked and each fed with separate antennas. Output to separate AF > channels and software to null noise by phase and amplitude set

Re: [Elecraft] K3 RF Gain calibration

Ignacy wrote: > > RF gain moves S-meter in my K3 to S5 max. After RF calibration it is > S9+60, but after power up it is S5 again. Seems something not stored. > Looks like the calibration numbers are not stored permanently? > Ignacy > This is a symptom of an old K3 Utility (circa September).

Re: [Elecraft] K2 APF implementation?

Ron D'Eau Claire wrote: > > Jeff, I have compared the K3's APF with the filter offered in Elecraft's > AF-1 Active Filter mini-module kit. There is no difference I can hear in > the > performance. Actually the AF-1 has more flexibility since you have two > levels of "Q" to choose from, variable

Re: [Elecraft] Re： Diversity Receive as N oise C anceling?

Edward R. Cole wrote: > > I'm not sure that adapting the sw for noise > cancellation will take that much extra > processing. Reversing phase is a simple digital > inversion. > It's also very simple to do at RF with one of the external phase boxes. I've used all 3 of these and rate them

Re: [Elecraft] Diversity Receive as Noise Canceling?

Edward Dickinson, III-2 wrote: > > The outboard accessories mentioned here work with only a single source of > noise, as I understand them. Is it feasible that a noise canceling unit > could be designed to utilize two or more sense antennas for multiple noise > sources? > You could use a sepa

Re: [Elecraft] Diversity Receive as Noise Cancelling

Guy, K2AV wrote: > > The problem with "automatic" is that it needs to know what out of the > composite signal you are getting do you want nullified. You will > still need manual input for this. Further, this is in effect only on > the frequency you are on. Only RF cancellation has the broadba

Re: [Elecraft] Interesting Conversation about FT-5000 vs K3

Lee Buller wrote: > > I like the two guys from California...I wish them long lives. > I also like those two guys from Washington (K6KR and KK7P) and wish them the same. And I wonder if your buddy can name ONE person in the design areas of Yaesu, Kenwood or Icom? Or ONE of the principals of t

Re: [Elecraft] Fwd: New Sherwood report

k9ztv wrote: > > I agree. > > Where is the edging out? > > Sherwood sorts on Dynamic Range-Narrow Spaced, and both rigs are 101db > at 2 Kcs. > > I'm confused by Bob's statement that it "edges out" the K3. > The nominal filter bandwidth for all (un-footnoted) 2 kHz measurements is 500 Hz,

[Elecraft] K3: Preferred Topband transceiver

FYI from the Topband reflector: http://lists.contesting.com/pipermail/topband/2010-December/033835.html What would be the preferred Topband transceiver these days in the two categories: 1.) Onboard 2nd receiver 2.) No onboard 2nd receiver Replies off list would be appreciated. 73 Frank VO1H

Re: [Elecraft] [K3] Printing Configuration

http://home.roadrunner.com/~n2bc/SW.htm Pete Smith N4ZR wrote: > > Is there any way to print out the configuration of my radio in a form > that is human-readable? > -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Printing-Configuration-tp5804912p5805128.html Sent

Re: [Elecraft] K3 Verizon/Frontier wireless router noise issues

Dennis KB7ST wrote: > > That made me curious about a really noise desktop I'm no longer using. I > opened up the power supply. Amazing! There are drawings or whatever you > call them on the PCB where AC power comes in showing inductor and > capacitor symbols but those components aren't instal

Re: [Elecraft] ON4UN has a K3?

eivers that share one common reference system. That is what I have switched to now." I thought some of you might be interested to see what two of the best low band DXers thought about their K3s. 73 & HNY, Bill W4ZV -- View this message in context: http://elecraft.

Re: [Elecraft] ON4UN has a K3?

milar disappointment with the Orion system. To the best of my knowledge the K3 Elecraft is the only receiver that has absolutely identical receivers that share one common reference system. That is what I have switched to now." I thought some of you might be interested to see what two o

Re: [Elecraft] ON4UN has a K3?

Arie Kleingeld PA3A-2 wrote: > > So what if ON4UN has a K3? > Since ON4UN has won 70% First Places and 20% Second Places (EU or World) in 100 international contests over a 20 year period, I place a lot of credibility in his opinions...not to mention his world high DXCC standing on 80m and EU h

Re: [Elecraft] K3: advice about options to buy?

VK7JB wrote: > > My question: Given my situation, would I benefit from the extra > investment in the KTCX03-1 high stability reference oscillator and/or the > 2.8-2.7 filter swap option? > > About filters: which would you recommend I buy, given my casual-mode > operation? I anticipate work

Re: [Elecraft] Filters and Configuration Questions

Bob Naumann wrote: > > I've asked about the 2.1 filter before, but here it is again. > > Will the K3 configuration be changed to allow the selection of the 2.1 > filter for transmission purposes? > Only Elecraft can answer this question. In early 2008, I tried using a 1 kHz filter for CW TX

Re: [Elecraft] Filters and Configuration Questions

P.B. Christensen wrote: > > Since keying bandwidth is a function of the RF envelope shape, I'm not > sure > why anyone would want to narrow the K3 filter on CW transmit. > Because most rigs have spurs and I wanted to make my signal as clean as possible. Typically these may be <80 dBc but sti

Re: [Elecraft] K3: options to buy: a summary of what I learnt from you all...

VK7JB wrote: > > # About filters options: > There was a concensus of opinion that the 2.8 8 pole / 2.7 5 pole swap > wouldn't be of benefit in my situation and that I should just go with the > 2.7 / 5 pole stock filter. > > > I've decided that I probably WILL do the 2.8 for 2.7 swap and ins

Re: [Elecraft] OT: LDE defined

k2zf50 wrote: > > If I am not mistaken, the original post was in reference to 80 meters. I > may be wrong, but I am not aware of long path on that band. > Jim Douglas K2ZF > Long path is an everyday occurrence on 80 during the winter. Listen tomorrow morning around 11-1200z for XU7ACY comin

Re: [Elecraft] [K3] Mods missing from web page

Carl Clawson-2 wrote: > > One that I notice to be missing is the KSYN3 stiffener mod. The app note > is > stored near the manual but is not linked anywhere that I can find. This is > one that I probably wouldn't bother with, but are there other mods that > somehow never made it to the mod page?

Re: [Elecraft] P3 VFO B Tracking

James Balls wrote: > > Not really been keeping up on the reflector, just acquired a P3 but cannot > find any way of tracking VFO B > IF OUT uses VFO A so a hardware mod must be added for VFO B in the KRX3 to have an IF OUT. N2QT has described a mod to do this below: http://groups.yahoo.com/g

Re: [Elecraft] K-3: Unswitched Rx Ant

K5WA wrote: > > My 1000' beverages are WAY too close to my 160 phased vertical array > (about > 100' max at the closest point) running the legal limit power but I have > zero > RF getting back into the K3 when transmitting and I use NO external relays > to protect the K3. > Same here. I've n

Re: [Elecraft] KPA500 - just 500 watts?

Pete Smith N4ZR wrote: > > And I think a lot of the "skill" should be credited to the ops on the > other end who manage to pull out the QRP stations. > I agree. Most of the credit should go the the station that copies QRP stations. It's one thing to generate a weak signal but entirely ano

Re: [Elecraft] Tips for using APF

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

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..

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 "tru

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:

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 man

Re: [Elecraft] APF measurements: FW 4.17 vs FW4.25 revisited

PA3A wrote: > Measured the two FW's 4.17 and 4.25 with APF on S+N/N ratio at MDS again, and again. Question was: if the filter plots are exactly the same, where does the measured (marginal) difference of 2 dB come from? > Found no difference this time. Seems that the XG2 drifted a bit in yest

Re: [Elecraft] K3 at VP8ORK

ab2tc wrote: > > The pictures shows just one vertical antenna up on the rocks, not an ideal > arrangement even if they have lots of radials. Is that all they have? > Note the shack photo with about 5 operating positions. DXE, SteppIR and SpiderBeam are all sponsors so I'm sure they have othe

Re: [Elecraft] The APF feature of the K3.

APF was discussed extensively in August 2009 (check the archives) including a simulation of the exact FT-1000D APF analog circuit which I found and sent to Al W6LX. Here's Al's simulation which was the model for the K3's DSP implementation of APF: http://sites.google.com/site/ft1000apf/w6lxanaly

Re: [Elecraft] P3, APF and diversity in CQ 160 contest

NO9E wrote: > APF was different story for RUN. Turning on APF was too slow. Having an > option to switch XFIL and APF for CW only would be great. I guess software > APF toggle change via PF key may be good enough. I never used APF in the CQ 160 (who has time to tune in 5 Hz steps using SHIFT o

[Elecraft] Elecraft KUSB

Does anyone know the cable length of the most recent adapter (using the FTDI chipset)? 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/Elecraft-KUSB-tp6000201p6000201.html Sent from the Elecraft mailing list archive at Nabble.com.

Re: [Elecraft] Elecraft KUSB

Bill W4ZV wrote: > > Does anyone know the cable length of the most recent adapter (using the > FTDI chipset)? > 6' is the answer. Another question...has anyone had problems with the Elecraft KUSB and XP? I got one report of problems with Win7. 73, Bill -- View this m

Re: [Elecraft] adding 250Hz filer, any improvement?

wayne burdick wrote: > > On the other end of the spectrum: If the going is really tough, you > might consider our 200 Hz, 5-pole filter. It's a favorite of CW and > data-mode operators who routinely have to dig for weak ones between > monster signals in CW and data modes. > I operated mo

Re: [Elecraft] FILTER SETTINGS

I should have mentioned that the 500 Hz Joe measured below was the Elecraft 5-pole...not the Inrad 8-pole. 73, Bill Joe Subich, W4TV wrote: > > > 200 250 400 500 >- > - 6dB 224 370 435

Re: [Elecraft] adding 250Hz filer, any improvement?

Edward R. Cole wrote: > > Let me ask a filter question for a different situation. I am > interested in receiving very-weak CW and currently have the 2.8 KHz > and 400-Hz 8-pole filters. Will narrowing the DSP bw down to 200-Hz > work as well as using a 200-Hz filter? There are no strong st

Re: [Elecraft] a P3 first impression

Dunc Carter - W5DC wrote: > > It has an added benefit in that I can tell if my neighbor's > horrible new plasma TV is on without having to get near the rig. If the > waterfall is all green, there is no point in trying to operate. On 80, > the plasma TV raises my noise floor from - 102 dBm t

Re: [Elecraft] K3 and CW-Skimmer

Arie Kleingeld PA3A-2 wrote: > > When using different roofing filters in the K3, the IF-offset changes a > bit in the K3, if you switch to another roofing filter, if I understand > it correctly.. It has been explained in this reflector that this happens > for a reason. It has to do with the w

Re: [Elecraft] K3 and CW-Skimmer

Arie Kleingeld PA3A-2 wrote: > > Bill, > > Thanks for the confirmation. > > I'm not an expert in how this software works to get the the signals > displayed on the right freq. > It seems to me that CWskimmer uses the displayed receive frequency as > data to work with. It would probably work b

Re: [Elecraft] Why I bought a K3

JERRY-2 wrote: > > With the exception of cost, has anyone given up their Icom for a K3? > A few ex-IC7800 users: EI6IZ, EI2CN, W2UP, K3WW (all avid contesters BTW). 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/Why-I-bought-a-K3-tp6062551p6062928.html Sen

Re: [Elecraft] Is the K3 have low sensitivity on 10 M and 6 M

1. Is your PREamp turned on for 10m? Hopefully you don't accidentally have RX ANT activated. 2. Please describe your antenna in more detail, including orientation. 3. I've never needed a preamp on 10m in the 8 years I've had a K3, but my antenna system has a lot of gain.

Re: [Elecraft] diagram K3S

I don't believe K3S schematics are available yet, but the K3 schematics are probably close and may help. http://www.elecraft.com/manual/K3_Schematics_Jun_2010.pdf 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/diagram-K3S-tp7623381p7623382.html

Re: [Elecraft] (K3) APF and selected bandwidth

sample of noise. ### The last phrase "helps your ears discriminate weak signals from noise by providing a wider background sample of noise" is key. Narrower bandwidths are not best for the human ear/brain...no matter what theory says about narrower bandwidths having better S/N. 73, Bill W4ZV

Re: [Elecraft] K3s - 80W on 160 - Resolved

erminals on multiple units for over 5 years with no problems. 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/K3s-80W-on-160-tp7624720p7624875.html Sent from the Elecraft mailing list archive at Nabble.com. ___

Re: [Elecraft] Confused about K3 to K3S Migration service

7;d definitely want one above ~3626 to get the new DSP. 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/Confused-about-K3-to-K3S-Migration-service-tp7626459p7626469.html Sent from the Elecraft

Re: [Elecraft] High Tx IMD with new K3s/10

Running DC input voltage close to the specified limit of 15.0 V will improve IMD. Perhaps the results you posted were with lower input voltage. 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/High-Tx-IMD-with-new-K3s-10-tp7627317p7627318.html Sent from

Re: [Elecraft] K3 upgrade to K3S question

6 and above. Hopefully your 3k S/N is above! http://www.elecraft.com/K3/mods/dsp_rev_c_information.htm 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-upgrade-to-K3S-question-tp7627908p7627920.html Sent from the Elecraft mailing list archive at

Re: [Elecraft] K3 upgrade to K3S question

s are becoming scarcer by the day. Thank you Elecraft for producing one of the best quality CW signals and not allowing owners to shorten rise/fall times to intentionally create dirty signals. 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-upgrade-to-K3

  1   2   3   4   5   6   7   8   9   10   >