[Elecraft] Elecraft CW Net Announcement

Good Evening, The calendar may not show it, the weather surely doesn't, but there are a few signs that spring is coming. I heard a grouse drumming on Wednesday, I have no idea why. Then last night a barred owl started up right outside my window. Next will come the tiny insects the

[Elecraft] K2 Battery

The lead-acid K2 battery is heavy and can corrode when its life is over, and is ancient.  I just removed my K2 battery, and when I use it portable I am going to power it with a tiny KX2 battery, or a bigger 4S2P pack. When I built my K2, I didn't use the Elecraft trickle charger.  I ran the

Re: [Elecraft] K3 Shipping Box

Thanks, Todd! Hi Kenny, I had to purchase one from Elecraft for my K3. $27.00 cost. Kind of pricey but it is a good box. My two cents worth from Hawaii. Todd On Feb 18, 2017, at 3:00 PM, Ken G Kopp wrote: James, I expect Elecraft could sell / send you the proper box

[Elecraft] OT: wellbrook active antenna question

I have an off topic question. I recently acquired a used Wellbrook loop, with missing power injector. I'm wondering if all I need do is build a 12vdc injector and apply to the coax feeding the loop? Please feel free to email direct bw...@fastmail.net Thanks N1BBR -- bw...@fastmail.net

Re: [Elecraft] ECOM scare -- FW: Soldering lesson

Even tiny hearing aid batteries ... supposedly "dead" ... among pocket change can explode with a surprising amount of energy. 73 Ken - K0PP On Feb 18, 2017 7:34 PM, "Jim Miller" wrote: > It has been a long time but... I had a battery in my pocket (not sure any > more

[Elecraft] K3/10 FOR SALE

  FOR SALE:  Elecraft K3/10, 2.7 KHz filter, KAT3 tuner, KXV3 Xvter I/O. Excellent condition w/most mods. Includes serial and power cables. $1100 Shipped. Allen, W0OUU __ Elecraft mailing list Home:

Re: [Elecraft] ECOM scare -- FW: Soldering lesson

It has been a long time but... I had a battery in my pocket (not sure any more but probably a 9v), no change in the pocket and do not remember what it was that caused the problem (probably my knife) but something apparently shorted the terminals and I felt uncomfortable, jostled my pocket, then

Re: [Elecraft] New K3/K3S Beta Firmware, rev. 5.57: Faster response to high reflected power

Bill, Download and install the latest K3 beta firmware. The time to power reduction due to high SWR has been reduced substantially. 73, Don W3FPR On 2/18/2017 8:58 PM, Bill Leonard N0CU wrote: I frequently wonder just how much protection a typical SWR protection circuit can provide against

Re: [Elecraft] New K3/K3S Beta Firmware, rev. 5.57: Faster response to high reflected power

I frequently wonder just how much protection a typical SWR protection circuit can provide against an instantaneous discontinuity if it relies totally on a feedback approach. If the response time of the feedback circuit isn’t faster than the risetime of the voltage at the output transistors that

Re: [Elecraft] K2 internal battery

Thank you From: inventor61 . To: hlyin...@yahoo.com; elecraft@mailman.qth.net Sent: Saturday, February 18, 2017 7:54 PM Subject: K2 internal battery Harry Having done the change myself and helping the vendor make the customization for the K2, I would have

Re: [Elecraft] K3 Shipping Box

James I had to send my KPA500 (including transformer) back to Elecraft from NY. My KPA500 was a kit so, like you, I had to figure out the best packaging. The KPA500 is much heavier than the K3s, so if you package as has been recommended (i.e. 2 inches peanuts or bubble pack on all sides and

Re: [Elecraft] K3 Shipping Box

Hi James, It might be simpler if you are not comfortable packing & shipping gear to let the UPS or FedEx store pack and ship the radio. If they pack it “in house” and there is any damage in shipping they will cover it 100% for whatever you claim its value to be. I normally pack myself but a

Re: [Elecraft] K3 Shipping Box

James, I expect Elecraft could sell / send you the proper box for your K3. The cost to mail an (assembled) empty carton shouldn't be too high, and sent via Priority Mail can be anywhere in the US within 2 - 3 days. This is Rose's experience with her cases and covers business. 73! Ken - K0PP

[Elecraft] K2 internal battery

Harry Having done the change myself and helping the vendor make the customization for the K2, I would have to recommend the Batteryspace item CU-J1087-V1. The "V1" connectorization allows for a drop-in incorporating the back panel cutoff switch There's a thread about all this from late August -

Re: [Elecraft] K3 Shipping Box

Ron, With proper packing as I indicated in my post a few minutes ago, there is not real need for double boxing. The important thing is that the radio is not able to move in the box if subjected to an impact. Rarely do I receive a damaged radio, and in all cases of damage (normally minor),

Re: [Elecraft] K3 Shipping Box

Jim, I don't know if you can get the box and spacers that Elecraft uses - you can give them a call and ask. They use a box and dense foam supports which fit the K3. After your K3's first trip to Elecraft, you will have a box like that when it returns. I ship a lot of radios (K1, KX1, K2

Re: [Elecraft] K3 Shipping Box

Following along with James' question, should the K3 be double boxed for shipment back to Elecraft for the "migration?" On 2/18/2017 7:12 PM, James Setzler wrote: Greetings, I bought my K3 as a kit and, for some reason, the finished product doesn't fit back into the box it came in!

[Elecraft] K3 Shipping Box

Greetings, I bought my K3 as a kit and, for some reason, the finished product doesn't fit back into the box it came in! Is there a Factory Approved Box available that I can get to insure the K3 is packaged properly for shipping? 73 James K1SD

Re: [Elecraft] ECOM scare -- FW: Soldering lesson

I was involved in product testing in my former career. One large computing machine which I worked on had a backup battery consisting of 4 AA cells, which no-one thought would be a problem, but during environmental testing at shipping extremes, condensation formed and created leakage paths. It

Re: [Elecraft] (OT) Follow-up on CW Resonant Speaker

Stan, Thanks for the video, most impressive. I have one comment regarding the need for an amplifier with the KX1 /KX2 or KX3 radios, there is another YouTube video from a couple of years ago that appears to be almost what the more recent QST article is based upon and in it the constructor has

Re: [Elecraft] ECOM scare -- FW: Soldering lesson

On 2/18/2017 2:14 PM, Ron D'Eau Claire wrote: > I never work around a car battery or other low-voltage, high current supply > wearing jewelry. If you wear a wedding ring that you cannot or do not want > to take off, do what hospitals do and wrap a band-aid around your finger > covering it.

Re: [Elecraft] ECOM scare -- FW: Soldering lesson

After pain, visual learning is often the best teacher. The rest of us sense wallet depletion. Don't forget that some of the battery packs we commonly use now (LiFePo4 is my example) are capable of tremendous current (mine are 'fused' by a BMS at 100 amps). Rick nhc On 2/18/2017 2:40 PM,

Re: [Elecraft] K3 loss of rx sensitivity

John, If I understand you correctly, the P3 level also dropped. That places the problem at the front end of the signal path - The T/R switch and the ATU. But first check the external connections. The PL-259 connector should be tight, and you need to check any coax jumpers that you have in

Re: [Elecraft] ECOM scare -- FW: Soldering lesson

AT had a school in Oakland training people how to maintain office 48 VDC battery banks.  They had a display of the top of one of the BIG office batteries with a 12" spanner some idiot used to tighten the terminals.  The middle of the spanner was gone.  Point well made. Mel, K6KBE From:

[Elecraft] K3 loss of rx sensitivity

I have a K3 serial # 025** with FW REVS 4.67. With no changes I not an apparent reduction of rx signals. Particularly the P3 waterfall is bright enough but barely shows traces with S5 noise level. MSK144 reports are always weaker to me than my tx to them. I'm at a loss as to where to start and

Re: [Elecraft] ECOM scare -- FW: Soldering lesson

I worked with a guy missing his ring finger after accidentally getting his wedding band across the high-current supply bus and the airframe in an aircraft console. The ring immediately welded to the current source so he could not move his hand. He said that he passed out from the pain as the metal

[Elecraft] QRPworks ADIF Utility Update

Hi all, Just a quick note to let all interested to know there is a new version of the free QRPworks ADIF Utility available (version 1.9). The ADIF Utility is used to export your log in any of the QRPworks products to an ADIF file on your PC or Mac. The Utility was enhanced based on a request

[Elecraft] KX2 Speker

Try a Chill Pill nice small speakers with high density magnets with rechargeable battery. The internal speaker on my KX2 sounds great so I no longer use them. I only use them on the KX3 SSB when I get tired of the head phones. Jim K9TF

Re: [Elecraft] K3: TX Gain Calibration Summary

Dick, I think all is well, as long as the TX Gain Calibration succeeded. What you are seeing in the summary is the gain factor for each band. The RF Gain is not constant from one band to another, but after a successful calibration routine, those values are used by the firmware to compute the

[Elecraft] K3: TX Gain Calibration Summary

I've just done a TX Gain Calibration. The numbers shown TX Gain Calibration Summary vary quite a bit. What is the proper way to interpret them? Best, Dick - KA5KKT __ Elecraft mailing list Home:

[Elecraft] K3 very bassy XMIT audio (weird problem)

I’m setting up a new K3s and having a very weird problem with the XMIT audio adjustment. The problem exists on both electret (IC Proset) AND a Heil dynamic mike. I properly set and adjusted bias (on or off), preamp (on and off) and low-high settings in the MENU depending on the mike in use. As

Re: [Elecraft] Sp3 a/b switch

Hi, Why would the amplifier be damaged from driving an open circuit? Transformerless solid state audio amplifiers typically are perfectly happy driving an open circuit. AB2TC - Knut Don Wilhelm wrote > Richard, > > If your K3 has all the audio amplifier mods installed, there should be > no

Re: [Elecraft] ECOM scare -- FW: Soldering lesson

Amen! I shorted my wedding ring and a wrench across a car battery once. It burned out a small part of the ring, and left a blister that lasted a week. I was lucky. I also got the ring off before the swelling made it impossible. I was doubly lucky. 73 Bill AE6JV On 2/17/17 at 5:16 PM,

Re: [Elecraft] Quick Way To Accurately Measure K3s CW Filter Offset?

The 409 is zero. Are the passband centered on display? Sent from my iPhone ...nr4c. bill > On Feb 18, 2017, at 3:30 AM, Dave AD6A wrote: > > Hi Folks, > > > > I'm having a go at my first CW contest for many years (and boy, am I > rusty!!). > > I've worked several new

Re: [Elecraft] Sp3 a/b switch

Richard, If your K3 has all the audio amplifier mods installed, there should be no problem. If you have an early K3 without those mods, you could damage the speaker audio amplifier by driving it into an open or shorted load. Yes, the A/B switch will make the load to the K3 an open circuit

Re: [Elecraft] Sp3 a/b switch

Doing so would mean outputting the K3 into an open load I would at a minimum turn down the volume on the K3 From: Richard Donner To: "Elecraft@mailman.qth.net" Sent: Saturday, February 18, 2017 10:32 AM Subject: [Elecraft] Sp3 a/b

[Elecraft] Sp3 a/b switch

Hi I was wondering if there is a problem using the A/B switch on the SP3 as a on / off switch for audio from the k3. The k3 would be on. It seems like this would be ok but I am checking with the experts here. Thanks Richard __

Re: [Elecraft] K2 Internal Battery

Very possibly yes, also very easy to accommodate. From: ke9uw To: elecraft@mailman.qth.net Sent: Saturday, February 18, 2017 9:14 AM Subject: Re: [Elecraft] K2 Internal Battery Wouldn't other chemistry require a different charging consideration? -

[Elecraft] K3 - beta firmware 5.57

I just installed new beta firmware 5.57 on my K3S. As usually it has been easy to install and all worked perfectly after installation. Thanks Elecraft for a great rig (the best) and the first class service! Sure I would'nt change it for any other. Ian IK4EWX

Re: [Elecraft] K2 Internal Battery

Wouldn't other chemistry require a different charging consideration? - Chuck, KE9UW -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Internal-Battery-tp7627088p7627092.html Sent from the Elecraft mailing list archive at Nabble.com.

Re: [Elecraft] (OT) CW Resonant Speaker

The confusion here is a common one, closed vs open ended resonators, especially if one looks at the poorly explained graphs in most physics texts. The speaker, attached to one end of the pipe, is not the closed end, it is open, since it drives the air particles at that end, and that makes it a

Re: [Elecraft] Soldering lesson

Even the caption is incorrect! You don't "hone in" on anything. 73, Roger On 2/17/2017 6:28 PM, Douglas Hudson wrote: This is an example of how easy it is to build a kit. http://www.eejournal.com/archives/fresh-bytes/everything-about-this-beautiful-woman-soldering-stock-photo-is-w/

[Elecraft] Quick Way To Accurately Measure K3s CW Filter Offset?

Hi Folks, I'm having a go at my first CW contest for many years (and boy, am I rusty!!). I've worked several new countries already, BUT, I noticed my K3s main and sub receivers' 400Hz and 200Hz CW filter offsets are all quite a bit off (even though I put the offsets in that were written on