[Elecraft] RPN Calc App For Android

Interesting discussion of the RPN calculators! I've been a user of RPN calculators for fifty years now. I started my EE career in 1966 still using slide rules. My first calculator was the HP-25C, then went to the HP-67 and several others after that. My favorite is the HP-28S, which is

[Elecraft] New wattmeter plans?

In terms of modernizing the Elecraft W2, I'm surprised no one so far has mentioned the excellent digital display unit offered by KV5J. The combo works great. 73, Chuck  NI0C __ Elecraft mailing list Home:

[Elecraft] Split receiving and 2 ears

-- don't know how I passed over this setting.  It's tips like this that make this Elecraft Reflector worthwhile.  Thanks, Peter! 73, Chuck Guenther  NI0C K3/P3, KX1, KX2 On March 6, 2019 Peter Dougherty wrote: One thing I would add here is the L-Mix-R setting in the config menu, which controls

[Elecraft] RadioSet-Go KX2 Retrofit

Received s/n 0007 recently.  I like it! See: https://www.eham.net/reviews/detail/14127 73 & Happy New Year to Elecrafters, Chuck Guenther  NI0C KX1, KX2, K3, P3 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/list

[Elecraft] K3 frequency offset problem

Commander v. 13.8.1, and WSJT-x v. 2.0.0 . I'd appreciate any hints about what I may be doing wrong. Thanks & 73, Chuck Guenther K3 s/n 1061 (upgraded to at least an S-) __ Elecraft mailing list Home: http://mailman.qth.net/mai

[Elecraft] Old Keyers (was: FT 8)

I used a HA-1 keyer during the early 1960's.  However, it was not the first successful commercial electronic keyer! It was my third keyer.  My first keyer was the "Mon Key," which did not have self-completing code elements, and my second was a Eldico, which was self-completing.  Both these

[Elecraft] KX2, N1MM+ and WKUSB

the KX2 setup in time. Any pointers would be appreciated! 73  Chuck Guenther, NI0C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net

[Elecraft] New KX2 firmware with 4 programmable functions; need testers

Beta firmware v. 2.75 works very nicely, Wayne. Thanks for this! My choices for Pfn are: PF1 = SUB on/off PF2 = RF Gain PF3 = AGC THR PF4 = Amp Hrs 73, Chuck Guenther NI0C Quote from Monday, April 3: "Hi all, The latest KX2 field-test firmware provides four programmable functions,

[Elecraft] K3 AGC with Dual Receivers

nd right ears. I am thinking I might want one set of AGC parameters for optimum reception of a weak DX station, and another set of parameters setup to listen to the howling hordes in the pileup. Surely others have done this (if it is indeed possible). How does this work out in practice?

[Elecraft] KX2 Happiness

Right now, my vintage K3 is back at Elecraft for major upgrades, including a second receiver. I'm enjoying operating the KX2 in the meantime. In fact, it was the dual watch feature of the KX2 that clearly demonstrated to me the benefits of a second receiver in working the DX pileups. On

[Elecraft] Vacuum Relays and 30 WPM QSK

I gave up on full QSK several years ago when I started using an active receive antenna and a DXE phase controller. Could not put all that stuff inside the keying loop of my Ten Tec Centurion. After the second failure of the Centurion QSK board and associated parts, I switched to a simple and

[Elecraft] Confused about K3 to K3S Migration service

Thanks, Lyle, (and others). I guess what I really want (and can currently afford) is an upgraded K3, not a new K3S. I have an earlier s/n K3 (#1061), and have done some of the mods, but not all of them. For example, I have the new synthesizer, but not the upgraded DSP board, or even the

[Elecraft] Confused about K3 to K3S Migration service

K3) plus my old K3 stripped of the options. Is that right, or do I receive only one radio back called a K3S? Where is the cost saving or advantage in choosing this service? 73, Chuck Guenther NI0C __ Elecraft mailing list Home

[Elecraft] KX2 Receive problem!?

could copy him much better with preamp on, and RF gain at -10 dB, attenuator still off.. BTW, I really like the AGC on the KX2, and often find myself trying to adjust my K3 so it sounds as good as the KX2. 73, Chuck Guenther NI0C Quote from N6KR: "First thing to check is to make

Re: [Elecraft] W2 setting SWR alarm trip points

where I wanted it, at 3.5:1. 73, Chuck NI0C On 1/5/2017 10:06 PM, Michael Chowning wrote: Chuck, Do you realize you are using two different bracket characters? Mike, N8TTR Sorry, I forgot my callsign in the earlier reply. On Jan 5, 2017, at 10:14 PM, Chuck Guenther <charl

[Elecraft] W2 setting SWR alarm trip points

I doing wrong? This is very confusing. TNX & 73, Chuck Guenther NI0C __ 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

[Elecraft] [KX2] fast becoming my favorite radio

I've only had KX2 serial No. 857 for about ten days. It was purchased as a replacement for my KX1, to be used primarily for portable operations while on vacation. However, I'm finding it so much fun to operate it at home, it has displaced my K2-10 on my operating desk. (In case anyone is

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

I've been using APF in my K3 since it was in Beta testing. I love it! I've found it necessary to use both the shift and Fine tuning-- these are not optional for effective use of APF. I've been using macros to engage and dis-engage the APF. One reason I keep combing through the Elecraft

[Elecraft] WTB: KX1 need by early January-- Purchase completed

Thanks to everyone who replied to my earlier message, including one very generous fellow who offered to loan me his KX1 for my January trip. I have purchased a fully loaded KX1 that is now on its way to me. In a few days, I'll try to post info on my QRZ.com page concerning operating from snowy

[Elecraft] Lost by USPS (perhaps stolen in Chicago area) KX1 and accessories

range case. Tnx & 73, Chuck Guenther NI0C St. Louis, MO __ 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 h

[Elecraft] WTB: KX1 need by early January

contact me off-list with details, price, and shipping info. Thanks & 73, Chuck Guenther NI0C St. Louis, MO __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm

[Elecraft] What crystal filter do you use the most?

This is an interesting discussion. Before I purchased my K3 in 2008, I had become addicted to narrow selectivity with my previous rigs, and was routinely tuning the bands with cascaded 250 Hz filters. Since I'm nearly 100 pct. CW, I purchased a range of crystal roofing filters to try out in

[Elecraft] 440 Hz CW Pitch - Wow!

No need to stop at 440; I've been using 300-330 on my K3 for a few years now. I'm stuck at 400 on my K2. 73, Chuck Guenther NI0C KX1; K2; K3 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http

[Elecraft] [K3} P3 Failure? fixed!

, though, tuning the bands for even a few minutes without the P3. I hadn't realized how much I have grown to depend on it! 73 thanks again. Chuck Guenther NI0C N1AL wrote: It sounds like a configuration parameter got corrupted somehow in non-volatile memory. Try doing a Parameter Initialization

[Elecraft] P3 failure?

-booted the computer, with no improvement. TNX for any help on this, 73, Chuck Guenther NI0C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft

[Elecraft] [K3] APF and Pitch

K3 users may wish to try my Macro's for using APF (CW Audio Peak Filter): APF ON Turns on APF, puts VFO in Fine tune mode (1 Hz resolution): IS ;SWH29;RT1;SWT53;RT0;RT1;SWT49;LK0; APF DN Turns on APF, puts VFO in Fine, turns on RIT and tunes down 20 Hz: IS

[Elecraft] Is the K3 a fun radio to operate ?

the MACRO's to be extremely useful for setting up Split frequencies and for using the CW APF. Like Jim, I seldom find a need to enter the K3 menu system. 73, Chuck Guenther NI0C __ Elecraft mailing list Home: http://mailman.qth.net

[Elecraft] New K3 Firmware: Improved AGC (great for pile-upsaswell as general operation)

I'd like to add my applause and thanks to Elecraft for this latest firmware upgrade. In addition to the new firmware, I finally got around to installing my 700 Hz CW roofing filter. The combination of extra wide filtering and higher AGC thresholds is great for combing through the pileups with

[Elecraft] Review of excellent portable antenna

I wrote a review of the N6BT Bravo 7K antenna for eHam about a year ago. After using it for a year on all bands (40 thru 10 meters), I remain very pleased with it. Band changing can be accomplished in just a few minutes. It seems to perform as well as my Force 12 Sigma 40XK, and is easier to work

[Elecraft] KX1 Red Display Filter

discovered a better way to attach this filter? I'm thinking of using a very small quantity of RTV sealant, judiciously applied around the edges of the filter with a toothpick. Any thoughts? Thanks 73, Chuck Guenther NI0C KX1 s/n 2512

[Elecraft] KX1 and Palm paddles

did. The results look very good. 73, Chuck Guenther NI0C KX1 s/n 2512 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net

[Elecraft] KX1 - Power Amplifier Q6 Installation Question

out. (It didn't). I also worried about damaging the nylon screw during soldering, so I used a metal one just during soldering. (My kit contained two nylon screws, and I used a magnet to separate the metal ones). 73, Chuck Guenther KX1 s/n 2512 Barry, K8QI, wrote: Figure 24 shows

[Elecraft] KX1 - Power Amplifier Q6 Installation Question

Chuck, it doesn't say both washers in my manual. Here's the exact quote: *The split washer under the standoff is important to reach the proper height so Q6 will come in contact with the cover.* The lockwasher under the board has nothing to do with the height of Q6's collector. 73, Chuck

[Elecraft] KX1 s/n 2512 completed

holder. This preserved my sanity during these rather awkward construction steps. Just make sure the tape does not cross the molded ridges at the bottom of the holder. 73, Chuck Guenther NI0C Barry, K8QI, wrote: I'm presently building KX1 # 2520 currently in phase 2.Appreciate the heads up

[Elecraft] KX1 s/n 2512 completed

myself with it before adding the KXB3080 module. 73, Chuck Guenther NI0C KX1 s/n 2512, K2 s/n 5853, K3 s/n 1061 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post

[Elecraft] APF Macros

, Chuck Guenther NI0C K2-10, K3, P3 N6FB wrote: It is tough to get old and find most of your electronics know-how is out of date- so much so that creating a macro from scratch seems beyond my ken. APF is a very useful function, and I use it along with RIT as the fine tuning mechanism. How

[Elecraft] Unexpected use for a P3

panadaptor frequency displays) for indicating the frequency response characteristics of high-Q antennas. 73, Chuck Guenther NI0C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net

[Elecraft] Forthcoming article will feature the P3

Band this season as captured on my P3. The March issue will be available to subscribers during late February. 73, Chuck Guenther NI0C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http

Re: [Elecraft] Unexpected use for a P3

Thanks, Jim. In addition to a wide span (I use 128 KHz), a low value of scale (30-40 dB) and the maximum value of averaging time also improve the display of the antenna characteristics. 73, Chuck Guenther NI0C On 2/2/2011 3:10 PM, Jim Sheldon wrote: !-- body{font-family:'Arial';font-size

[Elecraft] APF

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

[Elecraft] APF effectiveness...

and offset the RIT by 20 Hz, then I tweak the APF shift and/or the RIT manually to peak the received signal. The purpose of the offset is to shift the signal frequency away from the ringing frequency. This works best for me at pitch settings near the low end of the K3's range. 73, Chuck Guenther

[Elecraft] Reason to NOT buy a K3?

as the APF feature of the K3. 73, Chuck Guenther NI0C K2, K3/P3 Gary, K9GS, wrote: I primarily spend my time contesting, DX contests in particular, and most of my time on 80 and 40M. 99% of the time I operate CW. So, in particular, low band CW performance is important to me. ... I'm

[Elecraft] Weighted Tuning Knobs - Any Consequence?

I too believe the jury is still out concerning the long-term wear and tear on the Elecraft encoders caused by the use of extra heavy knobs. The original knobs spin just fine on my K3; besides I'm doing more QSY's these days from the P3. 73, Chuck Guenther NI0C K2, K3 Don Wilhem, W3FPR, wrote

[Elecraft] P3 time/date stamp?

that would enhance this would be a way to display time and date at least on the frozen P3 display. I take care of this manually by putting callsign, date, and time information in the .jpg filename in Windows My Pictures folder. Is this something that is planned for the future? 73, Chuck Guenther NI0C

[Elecraft] Reflectors, 73 and so on

Pete, I don't think this is curmudgeonly at all. I try to sign off with 73 on internet forum postings (such as on eHam), as well on e-mail lists like this one. I figure if I can't say 73, meaning, of course best regards, then perhaps I shouldn't send it.Keeps me in check! 73, Chuck

[Elecraft] APF Ergonomics

function of a memory M1-M4 so as to avoid the chance of getting the wrong one in the heat of a DX pileup. 73, Chuck Guenther NI0C K2, K3, P3 Rich Dettinger, K7MW, wrote: I think you can use PF1 or 2 to select the APF. This will still require a hold, and an inadvertent tap will interfere

[Elecraft] P3 New LVL Cal Function (Beta 0.41)

Many thanks to Bill, W4ZV, for providing the LVL CAL instructions in his Nov. 11 reflector message. I did the calibration using an XG-2 both before and after doing the IF output mod in my older K3. Before the mod, my transfer gain was -21 dB, which I think should have been -18 dB because I have

[Elecraft] ZLX8 - K3 firmware

transmitting and receiving antennas, as I can see the noise level drop off above and below resonance. 73, Chuck Guenther NI0C K3 s/n 1061 P3 s/n 444 Dave, N4QS wrote: Rich, I basically agree with you about adding the KRX3 first, but it would be interesting to see how the P3 works with only one RX

[Elecraft] P3 Wow!

My new P3 arrived yesterday, and I like it a lot! It's very easy and intuitive to operate. As someone who spent part of his career doing spectrum analysis (of sound and vibration), I don't know why I waited so long to acquire this fine accessory for my K3. I still need to do the IF output

[Elecraft] K3:New APF what happened?

The new APF continues to please this CW operator. Like others, I find it works better in some situations than others. But I would not have been able to copy and work RI1FJ (Franz Josef Land) on 160m the morning of November 8 without this new tool. A few suggestions for using it: 1. Make sure the

[Elecraft] APF Macros

SWH29;SWT49;RU;RU;RT0;IS ; I'm open to suggestions for improvement. 73, Chuck Guenther NI0C K3 s/n 1061 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post

[Elecraft] APF Macros-- postscript

. 73, Chuck Guenther K3 s/n 1061 __ 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

[Elecraft] K3 Intermittently loses gain

Ron, if you have an amplifier in line, check the amplifier relay contacts. I had to clean the relay contacts in my AL-80B about once per year. The symptoms were just as you described. 73, Chuck Guenther NI0C Ron, W3ZV wrote: K3 started to exhibit intermittent loss of gain after

[Elecraft] APF preview: very nice

XFIL's. That's probably because I rarely use anything wider than 350 or 400 Hz DSP selectivity. This is a real worthwhile improvement for CW operators! 73, Chuck Guenther NI0C K2-10 s/n 5853 K3-100 s/n 1061 __ Elecraft mailing list

[Elecraft] [K3} Should AGC settings be changed?

Barry, I find myself experimenting frequently with the AGC threshold and slope settings. Don't forget that these menu items can be assigned to the PF or M keys so they can be easily accessed and changed. Since I don't use the K3 internal keyer (I use an external microHam CW keyer), I use

[Elecraft] Reduced-height bail

Speaking of bail height, here's a suggestion for use of the generous space beneath the K2 transceiver. My N3ZN ZN-9B paddles nestle perfectly into the space.created by the standard bail. Very nice! 73, Chuck NI0C K2-10 s/n 5853; K3 s/n 1061

[Elecraft] OT: Don / Unidentified list posters

Ken Kopp wrote: I've 'stewed' about the issue most of the night. Me too, Ken. Don helped me a lot when I was assembling my KX1 and K2. The impatient K2 builder says he doesn't care at all about feelings; yet he also claims to have an EET degree. I taught for many years in a community

[Elecraft] ARRL CW K3 mini split...

Darn... my secret got out! :) 73 de Chuck NI0C K2, K3 CX7TT wrote: I worked many guys who were S3 abv and below the run freq while the zero beat guys to my xmit freq were S9 plus. __ Elecraft mailing list Home:

[Elecraft] Super K3

Did it ever occur to you that the folks who kept the bands hopping for 48 hours might enjoy a rest? Maybe spend some time with their families, watch the Winter Olympics on TV, go for a walk, etc.? Even though I was only a casual participant in the contest on a single band, I enjoyed the respite.

[Elecraft] KX1 Hard Case?

Eric, I've used Pelican cases to protect my cameras while X-C skiing, have taken a number of falls, with no damage to the cameras (or me!). You can check the archives on appropriate sizes for the KX1. I never took mine skiing , but I did find an appropriate size for it that would fit into a

[Elecraft] Pete Hoover, W6ZH sk

Elecrafters who have participated in the ECN's (nets) and EQP's (Elecraft QSO Parties) will recall Pete Hoover, W6ZH as a frequent participant. I just learned from W3UR's Daily DX service that Pete passed away on Feb. 4. I didn't know Pete very well, but we did have some correspondence, and

[Elecraft] Here's what needs work (or explanation)

to be made? 73, Chuck Guenther NI0C K2-10 s/n 5853 K3-100 s/n 1061 __ 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

[Elecraft] NR Revisited (trying again in plain text mode)

I've been pleasantly surprised at how well NR works even with very narrow CW bandwidths. I routinely use a 250 Hz roofing filter followed by 250, 200, or 150 Hz DSP filters for Top Band. The NR set around F1-2 or F1-3 quite often makes a difference for me. It wasn't always this way. Thanks to

[Elecraft] KRX3 roofing filter matching for diversity receive

Stan, you asked a good question-- one I asked about some time ago. When I worked in the aerospace industry, I designed and used analog and digital filters for measurement applications. Most textbook design formulas and procedures are based on 3 dB bandwidths, although sometimes our measurement

[Elecraft] K3 owners that have built a K2

I built the K2-10 (s/n 5853) with lots of accessories for QRP CW. Assembling the K3-100 was a piece of cake, compared to the K2. Just a couple of days ago, I finished hooking the two together for dual-receive (I haven't yet purchased a KRX3). This application was inspired by G4AON's reflector

[Elecraft] Noisy K3 receiver

I agree with Jack's remark below. I especially appreciate Bill Tippett (W4ZV) sharing his operating tips with the group, and have printed his recent messages (as well as the referenced info from K3NA) and enclosed them in my K3 operating manual for future reference. 73, Chuck NI0C K2-10 s/n

[Elecraft] K3 Assembly Tools

[With regard to the need for instrumentation] W3FPR wrote: So, the question becomes - What degree of accuracy in power output and S-meter reading do you wish to achieve? The default settings will be very close, but with the added instruments, one can achieve a higher degree of confidence in those

[Elecraft] Filter talk and contests etc

Merv, KH7C wrote: [the K3] sure makes for nice DXing on topband. The ARRL 160 contest brought out a lot of strong stations, some of whom weren't hearing very well. There were cluster spots coming in from DX that couldn't get the attention of some of the stateside CQ'ers. I spotted one W8 who

[Elecraft] OT: wall wart for RX-only PS?

Doug, KR2Q wrote: I have a RS wall wart rated at 14 watts (12v, 500ma). Is there any reason why I should NOT use this as the PS? Hmm... 12V at 500 mA is only 6 watts-- perhaps the 14 watts refers to the power drawn by the wall wart while supplying rated current. If that's the case, then I

[Elecraft] [K3] more function keys please

Don Wilhelm, W3FPR, wrote: It is easier for me to just do the steps manually than to remember what macros I put into the K3. 4 is about the limit that are managable IMHO, and maybe that can be expanded to 8 for some things - this is a case of 'less is more' for me. I just don' like magic

[Elecraft] K3: Anyone need help with the switch-customization (macro) feature?

Wayne, N6KR, wrote: : this feature is perfect for automating multiple switch presses on your K3. I'm really happy with my simple CWSPLT and UNSPLT macros that I've assigned to PF1 and PF2. Haven't had so much fun programming since the days when I fully mastered programming my HP-67 calculator.

[Elecraft] Elecraft] K3 PB Ctrl Shift .01/.05

and shift. It only takes a click of the mouse to change between 10 Hz and 50 Hz increments. (DXLab is free!) 73, Chuck Guenther NI0C K3 s/n 1061 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http

[Elecraft] K3 switch macro update

Wayne, N6KR, wrote: I'd like to thank everyone who's been testing the K3's new macro feature. It appears to be working as intended, allowing operators to customize SPLIT and other operations as needed. Use of these MACRO's for setting up K3's in split mode will virtually eliminate mistakes

Re: [Elecraft] Elecraft] K3 PB Ctrl Shift .01/.05

Joe Subich, W4TV wrote: If you're inclined to use a rig control program, DXLab's Commander now has very nice slider controls for adjusting the K3's bandwidth and shift. It only takes a click of the mouse to change between 10 Hz and 50 Hz increments. (DXLab is free!) The 10 Hz/50 Hz

[Elecraft] K3 switch macro update

Dick, PA3CW, asked: It would be nice to 'undo' the SPLIT+2 function by a second key press...is that possible in the MACRO language? Good idea for a MACRO, Dick. Try this MACRO I call UNSPLT: SWT13;SWT13;SWH13;RT0;XT0; 73, Chuck NI0C K3 s/n 1061

Re: [Elecraft] K3 switch macro update

Greg - AB7R wrote: Or just a HOLD of the SPLIT button to turn it off??? Of course that will work, Greg; however the UNSPLT macro has the advantage of equalizing VFO A and B frequencies and bandwidths and undoing the split with a single keystroke. 73, Chuck NI0C K3 s/n 1061

[Elecraft] K3 switch macro update

Richard, HB9ANM, wrote: Right, Chuck - or even simpler: FR0; Thank you. Actually FR0 is much better for an UNSPLT macro. The problem with using SWH13 is that it would actually put the K3 in split mode if it wasn't already there. So here's a better UNSPLT macro that will undo any splits between

[Elecraft] [K3] NEW: K3 Front Panel Switch Customization

row 1, column 3; therefore SWT11 refers to a tap on switch row 1, column 1 (A/B). 73, Chuck Guenther NI0C K3 s/n 1061 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm

Re: [Elecraft] K3 Firmware 3.44

I sure like the NR performance on CW even with very narrow filtering. The new NR has enabled me to copy stations that had been obliterated by noise at my rather noisy inner suburban QTH. 73, Chuck Guenther NI0C K2 s/n 5853 K3 s/n 1061

[Elecraft] K3 RF gain cal questions

) of the roofing filter I used during the gain cal? Should I repeat the RF gain cal? Third question: What exactly is calibrated during an RF gain cal? I understand in a general sense that the overall RF/IF system gain is determined by many things, including scaling constants in the DSP. Thanks 73, Chuck

Re: [Elecraft] K3 RF gain cal questions

Wayne, Thanks for the very prompt and very thorough answers to all of my question! 73, Chuck NI0C Wayne Burdick wrote: Chuck Guenther wrote: Is there any problem using the Rx input jack for the RF gain cal No. Works equally well. Suppose that I do an RF gain cal, then change

Re: [Elecraft] Variable bandwidth crystal filter

. The casual operators will have great success with only the 2.7 kHz filter, but a contester will want a full complement of roofing filters to fight those 'tough times'. 73, Don W3FPR Chuck Guenther wrote: I simply meant that if folks were looking for a more or less continuously variable

Re: [Elecraft] Variable bandwidth crystal filter

I simply meant that if folks were looking for a more or less continuously variable selectivity in the K3, then the 10 Hz increment DSP filters would provide that, for all practical purposes. 73, Chuck NI0C Ed K1EP wrote: At 8/5/2009 07:51 PM, Chuck Guenther wrote: With the upoming 10 Hz

Re: [Elecraft] Variable bandwidth crystal filter

J.R. Groeger wrote: I seem to remember talk some time ago about a variable bandwidth crystal filter becoming available for the K3 at some stage. Anyone know the status of its development? With the upoming 10 Hz resolution DSP upgrade (Firmware 3.23 being talked about), I certainly wouldn't

re:[Elecraft] Cable X-Perts RG-8 vs Davis Bury Flex

Jeff, For a 50 ft. run, if your existing coax is in good shape and fairly new, I wouldn't bother replacing it now, at least for HF work. When it does need replacing, the Davis Buryflex is mighty good stuff. I recently replaced a 10 year old 50 ft. section of RG-213 with Buryflex, as some of

[Elecraft] Re: INRAD will be soon making custom RX filters for the K2?

Since the K2 filter ultimate rejection is apparently sensitive to the lead length of the ground leads on the filter crystals (Elecraft instructions require the crystals be grounded near the bottom of the cans), it is not surprising that experiments with add-on filters resulted in compromised

[Elecraft] Another EQP Report

I just submitted my score summary to the scorekeeper. Only nine QSO's this year: four on 40m and five on 20m. Heard no EQP activity on 80m. Lots of competition from the OK QSO Party-- those guys are loud here in Missouri on 80 and 40m! W1SOC had an oustanding presence, and he was the only

re:[Elecraft] Hear it Noise Eliminating Module

I doubt that it would be as effective as the noise reduction feature of the KDSP2 module. 73, Chuck NI0C ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub,

re:[Elecraft] Builder Alert: Wiring the New Type of K2 External Speaker Jack

Is anyone else having trouble downloading this latest Builder's alert? I'm not getting it from the website, although I can download the Soldering Tutorial just below it. I tried copying and pasting the .pdf address from the subject original message to no avail. I'd really like to see this,

[Elecraft] K2 BFO adjustments for CW

Accurate Adjustment of K2 BFO frequencies for CW Although this subject is well covered already with appropriate links to procedures provided on the Elecraft website, I thought I would share my own procedure for adjusting the BFO frequencies. This procedure does not require the use of a

Re: [Elecraft] Planning kit purchase

Dave Wilburn wrote: Noise blanker-If I am operating from home, is this needed? I'm kinda on the fence with this one. My only experience with NB are on the commercial rigs. I understand this one is better, but I have never really seen any impact from using any of them. The archives seem to prove

[Elecraft] KIO2 T/S questions

I completed my KIO2 assembly, and it does passes the smoke test, and DC voltages at J1 measure okay, but does not communicate. It draws roughly 20 mA when powered up from the K2. As the serial port in my laptop is inoperative (has been for a long time), I've tested the KIO2 using a Belkin

[Elecraft] microHam CW keyer

I'm now working on the KIO2 kit for my K2. I've used both the K1EL WinKey and a microHam micro Keyer with other rigs and like these products very much. Since my K2 is CW only (and will stay that way), I'm thinking of getting the microHam CW keyer for use with the K2. The microHam website

RE: [Elecraft] K2 Alignment and Verification of Specifications

As Don, W3FPR has already pointed out, alignment of the K2 is straightforward and requires no test equipment. By following the instructions in the manual, as well as the frequency calibration info provided on Don's website, my dial calibration is now accurate within about 20 Hz, using WWV as a

[Elecraft] External amplifier with QRP version of the K2

For a few days now, I've been driving my Ameritron AL80B amplifier with 10-15 watts from my K2, yielding roughly 100-150 watts output on CW (no QSK). It's been working very well. I thought I'd share how this is implemented, in case anyone else is interested. I have three rigs (Omni 6, K2

Re: [Elecraft] K2 Alignment and Verification of Specifications

Geoff, G3NAQ wrote: So I have installed a dummy panel in the shack on which a number of difficult-to-adjust trimmers and coils are mounted, all requiring different trimming tools which I usually have to hunt around to find. Thus, when I hear that weak DX I just can't copy, and get those

Re: [Elecraft] who does the work in QRP?

Ron, wb1hga, wrote: I will still prefer my K1. I can't argue with your preferences. The K1 is a fine rig, I'm sure. I have a Wilderness Sierra (Wayne Burdick's predecessor to the K1), and I enjoy making QSO's with it. However, when I hear a KW contest station on 80 meters working from a

Re: [Elecraft] who does the work in QRP?

This has certainly been an interesting discussion. Usually this question comes up in asymmetrical situations-- where the op at one end is running QRP power levels and/or using a marginal antenna, and the person on the other end is running power that may be orders of magnitude higher than QRP

Re: [Elecraft] who does the work in QRP?

All the rationalizations and anecdotal experiences aside, there is no escape from the physical reality that a 100 watt station will be 13 dB stronger than the same station running QRP 5 watts. Whether or not this 13 Db is crucial depends upon propagation conditions and noise and QRM levels at

[Elecraft] eHam Review of Rework Eliminators

I thought readers (especially those now building their K2's) might be interested in my review of the Rework Eliminators now found at the eHam website, under Product Reviews, QRP Accessories. 73 Happy Holidays to all, Chuck NI0C K2 s/n 5853 ___

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