[Elecraft] K3 Unanswered Questons

In my admittedly quick scan of the manual I still have some unanswered questions. 1. What step sizes are available for: DSP BW (50?) PBT CW Pitch 2. What is the range of AGC SLP? Wasn't there some discussion of a mode emulating the K2 AGC (i.e. piecewise linear approximation)? 3.

[Elecraft] Re: K3 AGC Adjustment Parameters

N6KR: >2. Some combinations of settings can end up being very confusing, except for the advanced and/or experimentally inclined operator who can recognize the side effects. This has been endlessly played out on some of our competitors' rigs. I had sought to avoid such difficulties once it became c

[Elecraft] K2/K3 Scientific Attention to Detail

http://www.theworldlink.com/articles/2007/10/06/news/doc4707c03901b23958789121.txt "The EU's decision was irresponsible and not based on sound science," said Joe Smetana, a principal engineer and tin whisker expert with French telecommunications equipment maker Alcatel-Lucent SA. "We're solving

[Elecraft] K3: supplied power cable specs?

Whoa! Has Elecraft's customer base been replaced by people incapable of installing a power connector? Tell me it isn't so! 73, Bill W4ZV ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscr

[Elecraft]US Postal Service Express Mail to the UK - update

I recently shipped a used TS-930S digital board to Denmark from here in NC. It was shipped on 1 October and was received 5 October. Packaged weight was ~1 pound which cost $10.40 via "First Class Mail International" (the new name USPS uses for what was previously called Air Mail).

[Elecraft] Egg Crates

I know many have suggested using egg crates as parts containers for Elecraft kits but here's a hint that may be of help to some. Rather than using the 1 dozen egg crates found at your local supermarket, ask your favorite restaurant for a few of the larger size they use for eggs in bulk.

Re: [Elecraft] Egg Crates

Several have commented about ESD. The 12" X 12" pressed paper egg crates are guaranteed not to cause ESD damage your K3's screws, nuts, standoffs and lockwashers! ;-) These crates come in a large case holding 30 dozen eggs. There are 12 total holding 30 eggs each (6X5)...and the price is cheape

[Elecraft] Interesting K3 Pan Adapter Development

Very interesting news Craig! Especially the SDR issues we previously discussed here on the list: LP-Pan SDR Panadapter for Elecraft K3 (prototype stage)... * Optimized for K3 * Up to +/- 96 kHz display on PC * 8.215 MHz center frequency for centered display * Switching quadrature dete

[Elecraft] pan adapter from Telepost?

KZ1X: >Hmmm. Isn't the display in question actually a link to Clifton Labs? No it's not the same thing. This is only the interface between the K3 output, including buffered amplifier, QSD detector (probably similar to Softrock) and two isolated I and Q outputs which are fed to a sound

[Elecraft] Interesting K3 Pan Adapter Development

Hi Frank, GI4NKB: >Why would I want to remove my hands from keyboard and mouse to reach across a bench to fiddle with knobs when a mouse click or click and drag can do the same only quicker? To state that a mouse or keyboard does not make for rapid tweaking is akin to saying a keyboard and mous

[Elecraft] Interesting K3 Pan Adapter Development

N6TQS: >Given that "no knobs" operations are pretty new, and only possible with some radios, I think you may be confusing a correlation with a causation. When "no knobs" operators have the experience that "with knobs" operators do, then we may see different results. It also is dependent on the "n

[Elecraft] Interesting K3 Pan Adapter Development

Hi Frank (and Duane), Thanks for the copy from Duane N9DG. I certainly agree that SDRs have a lot of glitz that appeals to some, but the simple fact remains that SDRs have not gained popularity with top-level contesters outside the realm of VHF (which is very different than major HF cont

[Elecraft] CW roofing filters for the K3

W2KJ: >Am wondering though if the Elecraft lab has made any measurements in comparing the performance of the 5 pole 500hz CW filter as opposed to the 8 pole 400hz CW filter. http://marc.info/?l=elecraft&m=118970837128258&w=2 Here you go! These are recent measurements from our lab. Filter

[Elecraft] CW roofing filters for the K3

AA4NN: >Wait a minute. Does the act of putting in a specific filter tell DSP what compensation to do OR must we dumb operators try to guess at what compensation number to enter? And how would that number be entered? Read the manual for roofing filters. http://www.elecraft.com/manual/K

[Elecraft] K2s sighted at V8 expedition

http://www.v8.pa7fm.nl/pictures.htm Scroll down to last picture. 73, Bill W4ZV ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, s

[Elecraft] Two K3's @ CT3NT in CQWW CW

CT1BOH: If I don't copy you from CT3NT, forgive me no K3's yet from over there. I still have a very slight hope of getting mine (ordered May 1) by next Friday in time for CQWW. My guess is it will arrive while I'm away celebrating our wedding anniversary in 6Y5 the week after. Oh well, mayb

[Elecraft] K3: 2nd RX or 2nd K3?

HB9DRV: >I am so very impressed with my K3 that I am now seriously considering changing the order for the KRX3-F High Performance Sub-receiver to a 2nd K3 (10W basic, pre-assembled). Good idea but be aware you forego diversity reception unless you find a way to lock both to the same ref

[Elecraft] K3: 2nd RX or 2nd K3?

I forgot to mention you'll still have about $5k left from your IC-7800 proceeds even after paying for both K3s (one with KRX3 and one without). :-) 73, Bill W4ZV ___ Elecraft mailing list Post to: Elecraft

[Elecraft] roofing filter confusion

WC1M: >The Orion has a famous flaw where it switches in an amplifier to compensate for losses in the 500 Hz and 250 Hz roofing filters, but the gain is too high and the dynamic range goes all to heck. Dick I believe the flaw in Orion was actually routing the signal first through the 20 k

[Elecraft] K3 display for contesters

WC1M: The Orion does a good enough job with DSP that it isn't easy to distinguish between 600Hz, 400Hz, or 200Hz. Dick the K3 has a visual passband indicator that gives you an indication of the passband in octaves (e.g.. ~250 Hz, 500 Hz and 1000 Hz for CW). I doubt I'll miss reading BW to t

[Elecraft] Neat K3 Video!

KK7P re W4TV: >Please be assured that we appreciate your thoughtful and constructive comments on the K3. I strongly second that Lyle...I only wish Joe had been one of your beta testers because of the quality of his suggestions. Keep that in mind for the K4! ;-)

[Elecraft] K3 CW

W4CAK: >I have listened to both the recordings of the K3 very carefully and notice some raspiness in the cw note. HB9DRV: >It's the recording. I agree. Having been using my trusty TS-930S for the past 7 months, I know what good CW audio should sound like. One of the more striking first

[Elecraft] ALC

DJ7MGQ:: And, imho, the use of ALC to continuously control the exciter is usually not a good idea, unless the timing and other characteristics of the ALC match the exciter perfectly. I agree. I have *never* used ALC in >50 years. It causes more problems than it solves, especially on CW.

[Elecraft] New K3 f/w release: MCU 1.45, DSP 1.43

WA6HHQ: We have just released new versions of the K3's firmware and of the K3 firmware downloader. Wow...my first update experience! What an absolutely painless process! Didn't even have to reboot my rig and everything was updated. Nice job guys! Bill W4ZV ___

[Elecraft] Temperature Senors K3

WB3ANQ: >Can the temperature reading be shown on the display? Both the Front Panel and PA temperature can be seen by pressing DISP and scrolling the Sub knob. Also UTC, date, current, voltage and several other parameters, some of which I haven't figured out the use for yet! I'll leave

[Elecraft] K3 Assembly Issues to [EMAIL PROTECTED]

KA2NLM: >I got my K3 yesterday (SN 132, order confirmation 5/1). I am happily assembling it, but I have come across a possible problem. Gordon you should ask [EMAIL PROTECTED] which is set up for exactly these type of questions. They DO respond on weekends. If everyone starts doing t

[Elecraft] FILTER SETTINGS

Here's a tip for setting up the 500 Hz filter if you use one. The actual 6 dB bandwidth is 565 Hz, so in the FLx BW menu I set 0.60. This means the 500 Hz filter is activated at WIDTH = 600 instead of 500. The advantage of this is when you use DUAL PB. That function sets the narrow passband

[Elecraft] FILTER SETTINGS

I wrote: > ...he advantage of this is when you use DUAL PB. That function sets > the narrow passband to 150 Hz and the wider passband to 600 Hz. KK7P wrote: >The wider passband is 600 Hz at its narrowest setting, YOU can make it much wider just by rotating the WIDTH control once you are in DUAL

[Elecraft] A K3 filter observation

K0PP: >Mine has 6, 2.8, 2.1, 1 and .4 kHz 8-pole roofing filters. >It's amazing that I can move from the widest to the narrowest filter with a twirl of the "Width" control while tuned to a CW signal ... using the NEAT "CWT" feature ... and not hear any sign that I've (actually, the radio) has s

[Elecraft] FILTER SETTINGS

W4TV: >However, the 250 Hz filter is actually 370 Hz at the - 6dB points according to previous e-mail here. >With the K3, the point of diminishing returns for IMD (and close in rejection) is perhaps - 30dB instead of -60dB or more in a conventional crystal filter only radio. >If we use a strai

[Elecraft] FILTER SETTINGS

W4TV: >Expanding the 200/250 analysis to 200/250/400/500 as I did privately for someone else: 200 250 400 500 - - 6dB 224 370 435 565 Hz -60dB 896 777 913 1751 Hz

[Elecraft] FILTER SETTINGS - Correction

I wrote: >the 500 Hz will adequately reject a signal at 1092/2 = 546 Hz versus the 400 at 873/2 = 436 Hz or a difference of only ~100 Hz from the center frequency...which could easily be taken care of in extreme cases by using SHIFT. Oops...inserted a wrong number in there...should be:

[Elecraft] K3 firmware DSP2 N/A?

The download went fine again after in initial glitch which required removing power to shut the K3 off. My heart skipped a beat when it came back up with a dark LCD display and the red TX LED flashing. But then I realized it was reloading and all was OK. Just for my curiousity,

AW: [Elecraft] K3 firmware DSP2 N/A?

DSP2 is for the 2nd Receiver If that is true for the unavailable KRX3, why not treat it identical to DVR which is also unavailable? Seems confusing to display unavailable options in two different ways. 73, Bill W4ZV

[Elecraft] Mics for the K-3

AJ9C: >Do I just need a new adapter set up for Kenwood and plug in or do you need to order a headset/mic from Elecraft? You only need a Heil AD-1K...I used mine from the TS-930S I've had for 23 years. My Pro-Set HC-4 works fine including the foot switch connection. Life is good...and s

[Elecraft] No Elecraft List

I sent this direct to Andy because I included a screen shot (which the list software will delete). However I'm including the post for any others that may have similar problems. 73, Bill W4ZV >There are absolutely NO e-mail\posts coming through here from the g

[Elecraft] softrock with K3

W4UK; >Any recommendations for a "high-reverse isolation buffer" circuit? http://www.telepostinc.com/ LP-PAN Software Defined IQ Panadapter for Elecraft K3 (prototype stage)... * Optimized for K3 * Up to 192 kHz display on PC * 8.215 MHz center frequency for centered display * Switching quadratu

[Elecraft] CT-DOS and Elecraft K3

Does anyone know if the K3 will work under the TS-950 setting for CT-DOS? 73, Bill W4ZV ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber

[Elecraft] K3 as successor

N3HE: >The conditions are as follows: >DX at noise (you know, he's there, copiable at least part of the time, but any attenuation and he's not there) listening up 1. Pileup: REALLYBIGSIG1 up 1 and REALLYBIGSIG2 up 2. Result: artifacts all over the passband, again, you know, those bleeps, burb

[elecraft]K3 0181 err TXF

G3AKF: >Can someone help please ? I get this error message when I go to xmit-tune. Most likely you have not assigned a 2.7k or 2.8k filter to CONFIG:FLTX XX where XX is CW or SB. You must assign for both modes. >I am sure there has been an answer on here, but I can't find it Yes, here is the

[Elecraft] Date, bugs, and features

K1EP: >The point of all this is, I would like to see a list. >I know of no development group that doesn't already maintain a list of bugs and ongoing projects. Elecraft does maintain a list of issues that the Field Test team has access to. Although I can see arguments both pro and con

[Elecraft] TRANSLATION: K3 Subreceiver Status Update

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 in September, mainly for SO2R use. For true diversity, it would be necessary for bot

Fw: [Elecraft] A "My K3's coming question"

HB9DRV: the Navigator provides high-quality soundcard "USB Audio Codec Standard Microsoft Audio Device 2 channel Output DAC 16 bit 2 channel Input ADC 16 bit Codec operates at sampling rates up to 48,000 Hz* *Most Amateur software applications

[Elecraft] K2 - static discharge

N2TK wrote: >If I picked up a static charge by sliding across my carpet and touched the mike connector the K2 would reset like I was turning on the power. A very common problem...see the following related issue from Heil: http://www.heilsound.com/harmonics.htm#RFI

[Elecraft] Headband Magnifier - Father's Day Gift?

Fellow builders, Having built several projects recently (K2, Emtech ZM-2 and Inrad #352 roofing filter kit for my Orion), I recently bought a Headband Magnifier on eBay in preparation for building KD1JV's AT Sprint II which makes extensive use of surface mount parts. I ju

Re: [Elecraft] K2 receive volume

ZL1TW wrote: >I have read the thread about the lack of volume in the K2 that some chaps have reported, and personally I find it hard to imagine any problem in that area. I agree Ron. On my #4119, normal AF Gain into both a Heil Pro-set and Radio Shack PRO-50MX is at 9 o'clock and norm

[Elecraft] Field Day - Laptop Power Consumption

Do any of you folks have experience running a laptop from battery power via an inverter? I will be operating Field Day from a remote location and cannot use a generator. I'll be using my K2 QRP with a fully- charged 75AH deep-cycle marine battery topped off by a 3W solar cell. I'm plann

[Elecraft] Follow Up: Field Day - Laptop Power Consumption

Thanks to the many who replied. Most suggested running the laptop directly with DC power or through a DC to DC converter if voltages were not compatible. Unfortunately BOTH old laptops I have (Toshiba and Hitachi) use a direct AC power only with no DC port. I suppose I could jury rig some

[Elecraft] FD W4ZV 1B QRP Single Op

First, my hat is off to all you guys who use QRP all the time! I normally run full legal power in contests to large antennas (180' vertical on 160 and an 18 element stack on 10). Rather than running stations, I would guess all but a handful of my QSO's were S&P, and I quickly got accustom

Re: [Elecraft] FD W4ZV 1B QRP Single Op

K9YC wrote: >Our 100 watt 3A (K9OR) made 1039 Q's on 40 meters alone. You may have missed the point Jim. 100 watts is 13 dB stronger than 5 watts. If most QRP stations like myself found that CQ-ing was simply not effective and did S&P only, the universe of stations to work is FAR less.

Re: [Elecraft] K3WW FD 1E

Hi Chas, >Third year in a row with the K2, a deep cycle battery and the home antenna farm. 540 QSOS... all CW in 15 hours of operation. But...your home antenna farm (3 stacked Skyhawks, a 40m Yagi, 3 el SteppIR, etc) must be worth ~10 dB over temporary wire setups. A single 180' wire a

[Elecraft] Re: FD W4ZV 1B QRP Single Op

Hi Wayne, At 11:08 AM 6/29/04, wayne burdick wrote: QSK... Where did you have T-R set in the menu? At T-R = 0.00, the receiver is unmuted very fast, which can cause a small receive artifact with certain narrow crystal filter and DSP settings. But we recommend using T-R = 0.01 or higher an

[Elecraft] Icom IC-7800 review

G3VVT wrote: >Reading through the article it appears that the problem occurs when you test for frequency offsets inside the 64.455MHz 1st IF 6kHz roofing filter. The measurements on some of the tests of 5kHz offset and below were apparently noise limited to -60db region. >With this in mind,

[Elecraft] Icom IC-7800 review

I wrote: >unfortunately a plot of the K2's phase noise was not done. Oops! It is there...on page 16 of the K2 ETR...sorry. 73, Bill W4ZV ___ Elecraft mailing list Post to: Elecraft@ma

[Elecraft] KAF2 v. KDSP2

W1WF wrote: >The question is, why would you want to have the KAF2 instead of the KDSP2? Cost, and for some issues the KAF2 will work as well as its more expensive brother. Many guys have KAF2's sitting in their desks that have been replaced by KDSP2's, and these are typically available f

[Elecraft] W4ZV First FOBB

Went back up to Dark Springs Mountain in the Uwharrie National Forest where I did Field Day. Crazy day...fixed breakfast for XYL at 7AM, cleanup and setup for guest singing group at local outdoor worship center at 9 AM, service/performance at 10:30 AM, grabbed a ham biscuit and Coke and headed

Re: [Elecraft] End Fed half Wave Ant

VK2NU: >This talk about end fed halfwaves reminded me of the Fuchs antenna, which is the multi-band variant of the end fed halfwave. A 40m length of wire acts as a multiple of 1/2 wave on all bands from 80-10 metres >The DL QRP club used to supply a kit for the tuning section which also had an in

Re: [Elecraft] OT: SMT kits?

Richard, I already sent you my comments directly as you requested, but feel I should respond to some of the comments posted here. By way of background, the only SMT parts I had used previously were mounting 5 SMT caps on an Inrad roofing filter kit for my Orion. That went well so

Re: [Elecraft] What tuning knob is best on K2

KD5NDB: >I like the K2 knob with the finger dimple add on. It looks good and works well. You can get the finger dimple from Elecraft for about $5. I have put them on everything K2, K1 and even the KX1. Amen Don! I don't know why anyone would want anything else. One suggestion for posit

[Elecraft] K1 enthusiast wonders

Hi Mike, KK5F: >In short, I know of no other QRP rig made that has the features I need for portable ops served as well as found in the K1. I bought the K1, even though it was a kit, because there was (and is) no equivalent rig available anywhere else. Preface: First I'll state that I have a

Re: [Elecraft] 160m activity?

WB6TMY: >The only way the rest of us are going to ever get any use out of the band is to use it and generate some CQ's. Otherwise the DX'ers will continue having their way. Isn't this true on every band? That's why we have QRP calling frequencies away from the mainstream DX areas.

Re: [Elecraft] 160m activity?

(Resending with corrected URL) WB6TMY: >The only way the rest of us are going to ever get any use out of the band is to use it and generate some CQ's. Otherwise the DX'ers will continue having their way. Isn't this true on every band? That's why we have QRP calling frequencies away

[Elecraft] Road Kill Round Up QRP Kontest

I don't think anyone posted this to the Elecraft reflector but I know many QRPers are here also. If you hear me, call with 1 Watt before you QRO (more points for us Kritters). I'll be using my Beverages for receive and will probably hear you. Good luck with your kills! 7

Re: [Elecraft] K3 sidetone

I've been away for a few days and just read all of Wayne's and Lyle's comments. WOW! You guys have really listened, and I believe the market will richly reward you for that. I have always loved my K2's ergonomics and performance and it sounds like you are on track for an encore with the

Re: [Elecraft] Re: roofing filter loss and method of compensation

KK7P: >With the IF DSP in the K3, the issues that are of concern in a fully analog radio are less important. >As long as the crystal filter, which is being used as a roofing filter, has reasonably good skirts and ultimate rejection, the DSP will take care of the rest. The first 20 dB or so

[Elecraft] K3 Configuration Questions

1. Is the RX antenna input for 160-6m a standard part of the K3 or is a KXV3 also required? 2. Is a KAT3 required for a 2nd TX antenna input? 3. Can both synthesizers be phase-locked or not? Asked before...Lyle's response inconclusive. 4. Asked before but IMD performance data is needed for

Re: [Elecraft] Elecraft customer service: appreciate it!

HB9DRV: >I have never come a cross a company that listens to customers like Elecraft does I strongly second that! Ten-Tec does much better than most but they are about 10 dB down from Elecraft. I can't comment on Flex Radio from personal experience but they also appear to be very resp

[Elecraft] Roofing Filters

K0WA: >How many roofing filters do you need in a K3? I would suggest one for SSB and one for CW. That's basically correct, although it depends on how you plan to operate (i.e. serious low band DXing or contests versus casual operating). Remember that a roofing filter's purpose is to pre

[Elecraft] Re: roofing filters - when to use them

N9VV: >I have never understood the obsession of the modern CW ops with *narrow* filters. I use my brain and don't seem to miss any QSOs ;-) Ken there are two issues here. You are talking about how the ear/brain processes signals in noise. Indeed there are two different ways people prefe

[Elecraft] Re: roofing filters - when to use them

Hi Wayne, N6KR: >There is a third, equally important issue, and this is often the dominant one during contests or in pile-ups: Very strong interfering signals within the passband of the roofing filter can de-sense the reciever I respectfully disagree. What you are describing is measu

[Elecraft] Re: roofing filters - when to use them

I wrote: >A -42 dBm signal is equivalent to S9+29 dB using the same definition as above. Oops...too early. -42 dBm is equivalent to S9+31 dB not S9+29 dB. Not significant but I don't like to leave mistakes uncorrected! Another check is S9+76 (for BDR issues) minus S9+29 (for IMD issue

[Elecraft] Email Overload

>Now maybe some people may see the value of a web based Forum...no email choking your mailbox. For the record my freebie Yahoo account has rather limited filtering capability, so filtering is not really a good option for me. You can do that here. I'm subscribed to many reflectors but n

[Elecraft] Re: Brain vs Hardware filters

N6KR: >The decoder also works for PSK31 and RTTY, and you can transmit in these modes just by sending CW with the keyer paddle (or an attached keyboard). This eliminates the computer entirely, should you be so inclined. This is going to do wonders for expeditions using digital modes! I'v

[Elecraft] 8-pole vs. 5-pole roofing filters?

NT1Y: >What's the performance difference between the 8-pole and 5-pole K3 roofing filters? Good question, but the answer is more than simply bandwidth and shape factor. You need to know its performance *in the radio^ with IMD and BDR measurements. As ARRL discovered with Orion's 500 Hz

[Elecraft] one mo' time on roofing filters, etc

KR2Q: >PS... And roofing filter "rage" has been around for quite some time...it is far from an Elecraft phenom. Yep...at least since the mid-70's when Sherwood introduced a 600 Hz roofing filter for the Drake R4C. It addressed exactly the same IMD/BDR issues as today. Receiver performance

[Elecraft] Price Comparison and Comment

K0WA wrote: > I am sure many of you have done this alreadybut it is interesting to meand I thought I would share > > 1. FTDX9000 Contest $5699 (no extras) > 2. Orion II $4395 > 3. K3 $3436 (Includes 5

[Elecraft] Now that we've covered roofing filters, a Q on sub-receivers

AE5X: >As I understand it, the main purpose of a sub-rx is to allow diversity reception based on the fact that this 2nd receiver would be using a different antenna than the main rx, correct? Diversity is probably not what most people use the Sub-RX for. The main use is more likely to b

[Elecraft] Price Comparison and Comment

W5EWA: >but now someone says that we DON'T need them all. Definitely not...unless we have more money than sense. You need only ONE per major mode, which will cover the widest bandwidth you ever expect to use in that mode. For example: CW - 500 or 400. 250 and 200 are definite overkill

Re: [Elecraft] Price Comparison and Comment

At 07:34 PM 5/4/07, Don Wilhelm wrote: All of what you say is true *EXCEPT* for one item - and that is the AGC. Don you are absolutely correct. The reason I never considered it is that I have never experienced it with my Orion. I seldom operate with strong signals spaced much closer

Re: [Elecraft] Price Comparison and Comment

Hi Don, At 08:47 PM 5/4/07, Don Wilhelm wrote: I did ask Wayne about the AGC (with respect to the roofing filter selection) and he indicated that the AGC was developed in hardware before the A/D conversion and there is additional AGC action created in the DSP. As I understand it, it is simil

Re: [Elecraft] Price Comparison and Comment

--- Don Wilhelm <[EMAIL PROTECTED]> wrote: > Bill, > > All of what you say is true *EXCEPT* for one item - > and that is the AGC. > > [...] > Now, if the signal you are trying to copy is an S-1 > or S-2 level and an > S-9 signal comes into the roofing filter passband > (again it may be out > o

[Elecraft] start without ANY extra roofing filters....

It's deja vu all over again (from May 1). 73, Bill W4ZV http://mailman.qth.net/pipermail/elecraft/2007-May/067147.html K0WA: >How many roofing filters do you need in a K3? I would suggest one for SSB and one for CW. That's basically correct, althou

[Elecraft] K3: what specs will be reported?

KR2Q: >list the specs that I'd like to see, anticipating that you will, minimally, cover them. IMHO that's too much data given that these guys are trying to get the K3 out. I suggest limiting the list to: IMD (2 kHz spacing, 14 MHz) BDR (2 kHz spacing, 14 MHz) ...for at the least the C

[Elecraft] K3: what specs will be reported?

I wrote: >BTW I still cannot fathom 12 roofing filter options...8 optional on the current price list, 1 stock, 3 variable for the future. Seems like a production and marketing nightmare to me, especially in a DSP rig which already has 50 Hz variable BW over a wide range. Makes no sense to me! I

[Elecraft] Re: filter selection

Hi Wayne, N6KR: >The key point here is that these are all filters *are* offered by other manufacturers -- but at their 2nd or 3rd IFs. >We offer them at our first I.F. Of course most of those filters are going into rigs without an infinitely variableDSP filter following them. My poi

[Elecraft] AGC Pumping - NOT an issue in Orion or K3(?)

Regarding comments by W3FPR and N6KR below. I've been thinking about this and wondering why I have never heard this in my Orion in nearly 4 years. I've operated in many contests, including the CQ 160 CW every year with only an Inrad #762 4-pole 600 Hz roofing filter. This environment is

[Elecraft] AGC, Dynamic Range, 200 Hz Roofing Filters, etc

From my previous post: "As the resolution and speed of ADC hardware improve, digital radio receivers become less dependent on analog AGC to meet dynamic-range requirements. State-of-the-art 24-bit IF-DSP converters, such as those used in the Ten-Tec Orion, produce about 100 dB of dynamic rang

[Elecraft] start without ANY extra roofing filters....

I wrote: > Bottom line: 1. Narrower is not always better (Ten-Tec experience) 2. 8-poles is not always better than 5-poles (per Inrad) 3. Let IMD and BDR measurements be your guide More evidence below to support waiting for IMD/BDR measurements before ordering any roofing

[Elecraft] Re: start without ANY extra roofing filters....

AE5X: >I'm surprised that so many roofing filters (and the K3 itself) have been designed and offered for sale before the specifications are known/posted. Seems like the reverse order would have been more appropriate. I was also concerned about so many filters until I realized Elecraft h

[Elecraft] K3 Crystal Filters and Dynamic Range - D.R. impact and my basic recommendations

WA6HHQ: >We were very careful not to make the same mistakes made by other radio designs. Thank you Eric! Sorry for being paranoid but the old axiom "Fool me once...shame on you. Fool me twice...shame on me." applies to me personally since I have been burned before...hence my caution.

[Elecraft] K3 Crystal Filters and Dynamic Range - D.R. impact and my basic recommendations

WA6HHQ: >Notes: Since we also transmit through this (2.7 kHz) filter... Will it be possible to transmit CW through a narrower filter than the 2.7 kHz to even further minimize transmitted key clicks and phase noise? If so, how low in BW could we go before causing problems? 1 kHz, 500 H

[Elecraft] Sloped AGC

K8CV: >I found a neat option on the new Orion II that seems great cw. It is not in the manual. It is called slope or something like that. It is the last item in the RX menu. It has to do with the audio and normal is flat, probably for SSB ? But you can set the slope to 1.1 or 2.2 db and I first tr

[Elecraft] Sloped AGC

K8ZOA: >You might be interested in the AGC input versus output performance data I took for the K2 and several other receivers. http://www.cliftonlaboratories.com/receiver_agc_curves.htm >To some extent, the K2 already implements this feature. Whether this is an intentional design decision or a

[Elecraft] Sloped AGC

I wrote: >I believe a challenge for Lyle KK7P might be to implement sloped AGC in K3 using a multi-segmented approximation to the K2's very soft AGC curve. If this is possible, I suggest simply calling it "Soft" versus "Hard" in the AGC Menu. I feel we run the risk of making things far

[Elecraft] Musing on K3 Production and other things

K0WA: >Who makes the PC Boards? Who stuff's the boards? (or what ever you do to surface mount components) Who checks the boards? Who fixes the boards? Probably someone like Solectron, Flextronics Sanmina or a dozen other companies who manufacture loaded boards. It's most definitely not

RE: [Elecraft] Musing on K3 Production and other things

At 02:03 PM 5/9/07, you wrote: Flextronics. *runs away, screaming* What does that mean? Ever heard of these companies? HP, Dell, Microsoft, Nokia, Motorola, ABB, Siemens...even Philips in your home country. http://www.flextronics.com/en/portals/0/presentations/q32003/sld016.htm

[Elecraft] Reuse Inrad 8.215Mhz Yaesu Filter?

N2RD: >I will be replacing my Yaesu 1KMP with the K3. My Yaesu rig has some Inrad and Yaesu optional filters for the 8.215Mhz IF. Will I be able to use them in the K3? It's my understanding the filters are identical electrically, but use a different mechanical configuration. Therefor

[Elecraft] Roofing Filter Overkill

N2DTS wrote: >The K3 2.7 KHz filter is just the first filter, unless you have real strong local signals close, you likely wont have any problems. This is very good advice. Some may forget that the DSP filters in the 2nd IF are the primary means for achieving selectivity. The 1st IF roo

[Elecraft] Re: Elecraft] Re Competition for Elecraft

Hi Mike, Sienna design goals (not final specs): MDS: -130dB (preamp off) IP3: +25dBm at 5 kHz spacing; preamp off Blocking Dynamic Range: >125 dB at 5 kHz spacing 2-Tone Dynamic Range: >90 dB at spacings >= 5 kHz http://www.getboost.com/dz/sienna_specs.htm These are nothing gre

[Elecraft] K2 Strangeness on 160

Over the past month or so, I've been taking my K2 (#4119) to a remote mountaintop cabin for R&R with my XYL. This location is quite remote and previous visits seemed to be very RFI-quiet on the other bands, so I decided to install a Beverage on October 12 and try listening on 160. It is

  1   2   3   4   >