Re: [Elecraft] FIELD DAY PREP

[Michael Blake via Elecraft]

Scott, my recollection was that SS7 only affected the call setup but not the 
transmission characteristics.  It has been a while ago but that is what I 
remember.

I believe that the REAL problem was that the system slowly evolved from a 
battery and ground to a pretty complicated analog/digital transmission system.  
Those that started with the old common battery telephones JUST KNEW that you 
had to talk louder on a long distance call.

Very 73 - Mike - K9JRI







> On Jun 14, 2019, at 2:54 PM, Tox  wrote:
> 
> Trying to remember, but wasn't that a legitimate issue with early
> analog telephony? I don't recall if, pre SS7, the line amps had
> automatic gain adjustment. Enough hops, didn't the signal start to
> attenuate?
> 
> Scott
> AD6YT
> 
> On Fri, Jun 14, 2019 at 11:28 AM Bob McGraw K4TAX  wrote:
>> 
>> Reminds me of a true story of my dear grandmother.  I came into the
>> house one day while she was on the telephone.  She was almost hollering
>> at the top of her voice.  After she finished, I asked "grandmother why
>> were you hollering?"She replied "I was talking long distance".
>> 
>> Seems as hams do the more often than not today.  If they didn't hear you
>> the first time..then holler at the mike the next time.   That's sure
>> to get their attention.   If one hollers loud enough, neither will need
>> a radio.
>> 
>> 73
>> 
>> Bob, K4TAX
>> 
>> 
>> 
>> On 6/14/2019 1:17 PM, David Gilbert wrote:
>>> 
>>> A few years ago I was working NAQP SSB and came across this guy who
>>> was really loud but had such an overdriven signal nobody could copy
>>> him.  He kept calling CQ but nobody answered.  I finally threw my
>>> callsign out there and when he came back I told him he needed to back
>>> off on the mic gain if he wanted to make any contacts.  It took three
>>> steps of backing down his gain to get him to reasonable copy. He was
>>> over 10 db weaker but suddenly started running stations.
>>> 
>>> Cranking the knob to 11 is, as you say, totally counterproductive.
>>> 
>>> 73,
>>> Dave  AB7E
>>> 
>>> 
>>> 
>>> On 6/14/2019 10:52 AM, Bob McGraw K4TAX wrote:
 One of my major pet gripes for net control operators and contest
 operators is the fact they believe turning things up a bit with the
 thinking they will be heard a bit betterWhen in fact they are
 making their signal more difficult to copy.   If their station sounds
 good during SSB rag chew QSO's the the same settings should also be
 good for contests, Field Day, and when a net control.  The mentality
 of turning things up a wee bit is just pure B. S.
 
 Bob, K4TAX
 
 
>>> 
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>> 
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> 
> 
> 
> -- 
> Scott Small
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Re: [Elecraft] Digital Voice Plans?

[Michael Blake via Elecraft]

Thank you Wayne.

Michael Blake
k9...@mac.com <mailto:k9...@icloud.com>






> On Jun 1, 2019, at 2:05 PM, Wayne Burdick  wrote:
> 
> The K4 could accommodate modes such as these but we haven't defined plans to 
> include them yet.
> 
> Wayne
> N6KR
> 
> 
>> On Jun 1, 2019, at 4:09 AM, Michael Blake via Elecraft 
>>  wrote:
>> 
>> Eric, Wayne,
>> 
>> What are your plans for including HF compatible digital voice 
>> modulation/demodulation modes into the K4?  Modes such as C4FM, Dstar, 
>> FreeDV, etc…..
>> 
>> If none do you have any plans for freestanding DV modem hardware that would 
>> allow HF DV on the K3s, K4 or any other manufacturer’s HF SSB transceivers?
>> 
>> Very 73 - Mike - K9JRI
>> 
>> 
>> 
>> 
>> 
>> 
>> 
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[Elecraft] Digital Voice Plans?

[Michael Blake via Elecraft]

Eric, Wayne,

What are your plans for including HF compatible digital voice 
modulation/demodulation modes into the K4?  Modes such as C4FM, Dstar, FreeDV, 
etc…..

If none do you have any plans for freestanding DV modem hardware that would 
allow HF DV on the K3s, K4 or any other manufacturer’s HF SSB transceivers?

Very 73 - Mike - K9JRI







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Re: [Elecraft] USB to Serial on MacOS

[Michael Blake via Elecraft]

All of the Elecraft USB/serial adapters I have are also FTDI and work 
flawlessly on my MacBook Pro.

Michael Blake
K9JRI






> On May 17, 2019, at 3:07 PM, Tox  wrote:
> 
> This.
> 
> I have spent enough time fightingg "prolific" cables that proved to have
> fake chips that it is far cheaper to just buy the keyspan unit, install the
> ftdi driver, and have it Just Work (modulo variability in Port naming).
> 
> Chuck the prolifics, get a genuine ftdi (the keyspan unit is a great
> choice). Save the grief.
> 
> Scott
> AD6YT
> 
> On Fri, May 17, 2019, 11:12 AM AL7CR  wrote:
> 
>> I have been down this route on numerous Macs under many versions of OS X.
>> The absolute "gold standard" is the Tripp-Lite Keyspan USA-19HS.  They are
>> expensive but they just work on OS X.  I keep them in stock for projects.
>> Available on Amazon.
>> 
>> AL7CR
>> 
>> On Fri, May 17, 2019, at 10:28 AM, Doug Person wrote:
>>> I know there are a lot of guys that are very good at macs here. I'm
>>> stuck. I'm trying to get a USB to SERIAL adapter to work on a mac. I've
>>> tried 4. None work. I look at System Information but I honestly can't
>>> tell if there's a serial port adapter there or not or if it even works.
>>> I did install Prolific drivers. OS is 10.13.6.
>>> 
>>> Thanks for any help.
>>> 
>>> Doug -- KJ0F
>>> 
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Re: [Elecraft] KPA1500 LOW GAIN FAULT

[Michael Blake via Elecraft]

I agree with your process Chuck. I have never read an Amphenol document that 
suggests anything other than hand tight. 

Since the barrel is knurled and has no flats for a wrench it seems certain that 
a wrench was not what the designer had in mind. 

73 - Mike - K9JRI



> On May 1, 2019, at 2:19 PM, hawley, charles j jr  
> wrote:
> 
> I don’t tighten pl259s with pliers. I wiggle the plug so it sets into the 
> mating grooves while tightening it with my fingers and never had them get 
> loose. I think that’s where folks go wrong...when the plug doesn’t set into 
> the grooves. I almost need pliers to remove the plug when disconnecting it. 
> At least 60 years so far this works...
> 
> Chuck Jack 
> KE9UW
> 
> Sent from my iPhone, cjack 
> 
>>> On May 1, 2019, at 11:46 AM, Jim Brown  wrote:
>>> 
>>> On 5/1/2019 9:08 AM, Ron Durie wrote:
>>> Tightening inside PL259's with pliers is not desirable, because each Hams
>>> definition of "SNUG" occurs at different Torque levels.
>>> I want to use my hands to screw them on and off.
>> You may like that, but mother nature likes them tight. And she always wins.
>>>  Also, when you have SO239 chassis mounted "Round" connectors (using one
>>> large lock washer), then pliers will loosen them every time.
>> 
>> I'd call that equipment junk.
>> 
>> 73, Jim K9YC
>> 
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Re: [Elecraft] [K2] Rig Control Error

[Michael Blake via Elecraft]

My Window10 computer has 4 USB C ports and a 7 port USB3 hub.  I have 5 
different Elecraft USB Serial ports connected and they always receive the same 
com port number regardless of which USB port or HUB port they are plugged into. 
 K3s, KAT500, KPA500, KX3, SG3 and other non Elecraft devices.

I have never had them change as a result of a Windows upgrade.

73 - Mike - K9JRI






> On Apr 25, 2019, at 5:08 PM, Don Wilhelm  wrote:
> 
> Windows will usually assign the same port number IF you plug it into the same 
> USB port.
> 
> You can go into Properties for each device and change the port number - COM1 
> and COM2 are usually reserved for serial ports on the motherboard, even if no 
> RS-232 ports are present on the board.
> 
> 73,
> Don W3FPR
> 
> On 4/25/2019 4:14 PM, David Haines wrote:
>> Thanks for the confirmation.  That's exactly consistent with my experience.  
>> It's just too bad it has to be that way.
>> david, KC1DNY
>> n 4/25/2019 3:58 PM, Bob McGraw K4TAX wrote:
>>> Sometimes you can disconnect the cable and then plug it back in and Windows 
>>> will recognize the device. In other cases you will need to power down the 
>>> device and back up in order for Windows to recognize the device.
>>> 
>>> Some assignments are sticky and will remain, while other cases it will be 
>>> necessary to assign a port number every time.  That is controlled in the 
>>> device driver code and the way Windows handles port assignments.
>>> 
>>> Bob, K4TAX
>>> 
>>> 
>>> Sent from my iPhone
>>> 
 On Apr 25, 2019, at 12:53 PM, Jim KO5V  wrote:
 
 Hi Bob,
 
 I use Device Manager, and I've done what you described. However, it 
 doesn't always seem to work. Sometimes the device ignores the COM port 
 selected in its program and D.M, sometimes the settings won't stay 
 selected after I close the program. Do I need to use Device Manager each 
 time I start a device?
 
 Thanks. 73, Jim  KO5V
 
 
 -Original Message-
> From: Bob McGraw K4TAX 
> Sent: Apr 25, 2019 11:26 AM
> To: Jim KO5V 
> Cc: Elecraft List 
> Subject: Re: [Elecraft] [K2] Rig Control Error
> 
> With Windows, DEVICE MANAGER is your friend.  Having it open and on 
> screen, you can plug in devices or unplug devices and see, in real time, 
> the port they are using.   This will then be the port to assign in an 
> application.  Also check the parameters of the port to assure the device 
> can communicate with the port.
> 
> Bob, K4TAX
> 
> 
> Sent from my iPhone
> 
>> On Apr 25, 2019, at 12:18 PM, Jim KO5V  wrote:
>> 
>> I have similar problems with my Win7 64 bit machines. It's tough to 
>> configure any additional COM ports, everything seems to eventually 
>> default to COM 3, and I can't make any changes "stick". Using only one 
>> "COM port"device, Sometimes just unplugging, and re-plugging that 
>> device, or stopping and restarting the desired program will make the 
>> computer see the connected device; sometimes,not.
>> 
>> I asked my brother-in-law, a Windows systems guy, what he would do, and 
>> his reply was that he basically does what I've been doing, but then 
>> explained about some "advanced stuff" that he would help me with, but 
>> that I shouldn't try them myself...
>> 
>> Make sure there's nothing else using the COM port, and see if the 
>> program will work (if you haven't already done that).
>> 
>> Good Luck. 73, Jim KO5V
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>>> 
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Re: [Elecraft] Question

[Michael Blake via Elecraft]

I would love to be able to check into an Elecraft net or user group via DStar.

Very 73 - Mike - K9JRI


> On Mar 29, 2019, at 11:29 AM, kd...@frawg.org wrote:
> 
> Eric,
> 
> If you see some momentum for this, don't exclude the "other modes"... The 
> rate of growth in DMR has been matched by the new activity on the other DV 
> modes, so it might be better to go for an open solution.
> 
> My suggestion is that you reach out to Jeff VE6DV and the folks at 
> https://www.openquad.net/ who are very welcoming,  and net friendly. They can 
> provide you with a net time slot that is "multi-mode", ie. reflector, room, 
> and TG, supporting the 3 major DV modes plus EchoLink, etc.
> 
> Investigate at D-Star XRF757A, DMR BM TG 31012, and YSF US QuadNet Array, 
> number 37099, Echolink WWARG Conference.
> 
> Best and good luck.
> 
> KD4IZ
> Jack Spitznagel
> FM19oo
> 
> 
> 
> 
> -Original Message-
> From: Eric Lanzl  
> Sent: Thursday, March 28, 2019 20:35
> To: Elecraft List 
> Subject: [Elecraft] Question
> 
> Hello members of the Elecraft forum.
> I was wondering if there might be an interest in requesting a DMR (digital 
> mobile radio) talk group for Elecraft users. It might be nice to have a place 
> to mee in a digital room. One can request a tg on the relatively new TGIF 
> system. Anyway let me know what people think? If there is interest I will 
> make a request for the tg.Maybe comments can be made here on the forum about 
> the talk group. . 
> 
> Thanks,
> Eric WB(JNZ (also net control for the Elecraft sideband net)
> 
> 
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Re: [Elecraft] Legacy = Low Latency: FSK-D mode

[Michael Blake via Elecraft]

My first was a model 14 strip printer. It was also in the early 70s. 

  Very 73 - Mike -  K9JRI


> On Mar 22, 2019, at 12:14 PM, Wayne Burdick  wrote:
> 
> If you're a new owner of a K3, K3S, KX3 or KX2 -- or if, like most of us, you 
> never quite made it all the way through the owner's manual -- you might not 
> have tried our FSK-D mode. This is one of our favorite features. It gives you 
> an amazingly simple way to dabble in amateur radio's original yet still 
> actively used data mode: RTTY. As embodied in our FSK-D mode, RTTY has two 
> major advantages over FT8, JT9, and similar computer-mediated modes...but 
> first some background.
> 
> * * *
> 
> RTTY (radio teletype) has a long, colorful history. The basic encoding and 
> transmission methods were invented in the 1800s, and were later used by 
> wireline news services as well as for wartime comms. It has been in use by 
> hams since around the end of WWII, who took advantage of surplus military 
> teleprinters. For more on this, see:
> 
>   en.wikipedia.org/wiki/Radioteletype#Early_amateur_radioteletype_history
> 
> As a teenager in the 1970s I had a Teletype Corp Model 15. This page shows 
> some examples of what this beast looked like:
> 
>   http://www.baudot.net/teletype/M15.htm
> 
> In my shack, the Model 15 and all of its associated paraphernalia took up 
> most of a workbench. It made a huge racket and consumed reams of paper, not 
> to mention oil. Sadly, I never did get everything working properly and never 
> made an QSO with it. Yet my fascination with RTTY continued.
> 
> When we designed the K3, my interest was rekindled, and we endowed it with 
> the ability to decode and encode 45-baud RTTY signals. The DSP handled 
> demodulation, while the MCU assembled character bit streams. (We later added 
> 75-baud RTTY as well as PSK31 and PSK63 modes.)
> 
> Lyle Johnson (KK7P) and I had quite a bit of fun when we first got decode 
> working. Speaking strictly for both of us, tuning around between 14.080 and 
> 14.100 during an RTTY contest was like being a teenager all over again. We 
> quickly added the ability to transmit in this mode using the CW keyer paddle 
> and message memories. The upshot is that I finally had my first RTTY QSO, 
> doing it the hard way -- writing a good chunk of the firmware that made it 
> possible.
> 
> Here's the importing thing: our K-Line/KX-Line implementation of RTTY makes 
> it incredibly simple to use. It's nearly foolproof. The setup details vary a 
> bit among the rigs, but basically you select DATA mode, then FSK-D sub-mode, 
> and turn text decode on. Then just tune around in the RTTY band segments 
> until you see signals start to decode. 
> 
> If you're a CW op, you can immediately transmit in RTTY mode by simply 
> sending CW. If not, you can connect a netbook or laptop to your rig (via a 
> USB port), then use the Terminal window in K3/KX3/KX2 Utility along with the 
> keyboard. The Utility for each rig includes instructions for using the 
> Terminal window.
> 
> * * *
> 
> Earlier I claimed that RTTY operation using our FSK-D mode has some 
> advantages over FT8, etc. Here they are:
> 
> 1. You don't necessarily need a computer. Decoded and encoded text scrolls 
> across the radio's display. At your home station, this is great for simply 
> tuning around casually; no need to turn on the computer or set up software 
> applications. It's an even bigger advantage for field operation. With the KX3 
> or KX2, you can use RTTY (or PSK31/63) from essentially anywhere, even 
> operating hand-held. During Field Day and RTTY contests, I make a point of 
> taking a hike and making a few RTTY Q's pedestrian mobile (/PM). When a band 
> is open, you can work the world in these modes. (For some of us, it doesn't 
> get much better than this :)
> 
> 2. Our FSK-D and PSK-D modes are *conversational*, with no restrictions on 
> what you can send, no software delays or time synchronization, no 
> predetermined frequencies, and a natural style of interaction as with CW or 
> SSB. The receiver is automatically configured for a narrow passband, so you 
> simply tune in a signal until you start seeing decoded text -- often a CQ -- 
> then respond with the keyer paddle, or with the keyboard on your 
> netbook/laptop, if applicable. 
> 
> As you can see, we've come a long way from the Model 15, paper, oil, noise, 
> and complex terminal hardware. In addition to using the display on the rig 
> itself, our panadapters can be used. Text can be displayed on our P3-SVGA 
> display, as well as on the PX3. A keyboard can be connected to either the P3 
> or PX3.
> 
> Next time you're listening on 20 meters, the most popular band for RTTY, take 
> a quick spin above 14.080. If you hear some of those magical tones, turn on 
> FSK-D mode and give this mode a try. 
> 
> Many DXpeditions have an RTTY station operating during some periods, so 
> you'll often hear RTTY ops making DX contacts. In general, RTTY DX stations 
> are 

Re: [Elecraft] K-POD Function key #'s mapping/Macro Assignments not matching K3 util assignments

[Michael Blake via Elecraft]

My Mac OS version of the K3 utility writes all 16 macros and has for several 
different MAC OS versions.  Currently on Mojave and zero problems with any of 
the Elecraft utilities.

Very 73 - Mike - K9JRI






> On Mar 16, 2019, at 8:10 AM, Brian “VE3BWP” Pietrzyk  wrote:
> 
> It turns out the Mac version of the Elecraft k3 utility has a defect. It does 
> not write Macros 10-16 to the K3. The windows (eww!) k3 util writes the 
> macros fine so K-Pod working now as documented. 
> 
> Now if I could just get diversity receive to work as documented..
> 
> Thanks to Doug at Elecraft support for working through this with me through a 
> power outage at their site!
> 
> Thanks,
> 
> Brian ve3bwp
> 
>> On Mar 14, 2019, at 7:02 PM,   wrote:
>> 
>> Quite often folks forget a trailing semicolon after each command. It’s not 
>> optional, even if there's only one command in a macro, that one command must 
>> end in semicolon.
>> 
>> GL!
>> 
>> 73 de Dick, K6KR
>> 
>> 
>> -Original Message-
>> From: elecraft-boun...@mailman.qth.net  On 
>> Behalf Of Brian Pietrzyk (ve3bwp)
>> Sent: Thursday, March 14, 2019 15:37
>> To: elecraft@mailman.qth.net
>> Subject: [Elecraft] K-POD Function key #'s mapping/Macro Assignments not 
>> matching K3 util assignments
>> 
>> I read through the archive and found no mention of this issue:
>> 
>> I just got a k-Pod and a K3s and am wanting to program Function keys but the 
>> tap assignments don’t seem to work. The hold ones seem to. 
>> 
>> I am referring to table 11-3 / p 235 in the Fred Kady K3s pdf ebook.
>> 
>> The table says tap F1-F8 should map to K3 Macros 9-16, Hold F1-F8 should map 
>> to K3 Macros 1-8.
>> 
>> I assigned F1 Tap to VFO FINE and Hold F1 to VFO Course. By putting SWT49; 
>> and SWH49; commands in Macro 1 & 9 lines respectively and this works as 
>> expected.
>> 
>> For F2 TAP I just want to toggle NR on/off. So I put SWT34; into Macro 10. 
>> When I tap F2 nothing happens and VFO B displays MACRO 1. So I put SWT34; 
>> into MACRO 2 and Hold F2 works as expected. NR toggles on/off and VFO B 
>> displays MACRO 2 as expected when I hold F2. Not sure why Tap F2 acting this 
>> way?
>> 
>> I have the same issue with F3 & F4. I assigned BAND ^ and BAND v to tap and 
>> nothing happens and VFO B display MACRO 1. Hold F3&4 Works fine. 
>> 
>> So essentially I can only get Tap F1 to work. I have to Hold the get the 
>> rest of the function keys to work. I tried reloading the firmware into the 
>> Kpod and no change. Did I get a defective KPOD?
>> 
>> Thanks,
>> 
>> Brian ve3bwp
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Re: [Elecraft] Fwd: Where is the 1500 KHz. HPF in the K3/K3s

[Michael Blake via Elecraft]

Correction - "1.8MHz HPF"

73 - Mike - K9JRI
 

> On Mar 14, 2019, at 10:12 AM, Michael Blake via Elecraft 
>  wrote:
> 
> 
> Can anyone provide me with the location of the 160M HPF on the K3s schematic? 
>  On the KX3 schematic it is clearly labeled “1.8 KHz. HPF” but I have been 
> unable to find the similar circuit on the K3s schematic.
> 
> Since you must use the RX  IN connector to receive on 630M it is obviously in 
> the circuit but I cannot find it on the drawings.
> 
> Any help?
> 
> 73 - Mike - K9JRI
> 
> 
> 
> 
> 
>> Begin forwarded message:
>> 
>> From: Michael Blake via Elecraft 
>> Subject: [Elecraft] Where is the 1500 KHz. HPF in the K3/K3s
>> Date: March 10, 2019 at 9:38:49 AM EDT
>> To: Elecraft Mailing List 
>> Reply-To: Michael Blake 
>> 
>> I understand that a BCB HPF is necessary to protect the PIN diode switches 
>> from BCB (Broadcast Band) overload but I can not find it in the K3s 
>> schematics.  Can anyone tell me which sheet and components make up this 
>> filter.
>> 
>> I understand that to receive 630M you bypass the HP filter by using the RX 
>> IN but I am curious where it is on the schematic.
>> 
>> Michael Blake
>> k9...@mac.com <mailto:k9...@icloud.com>
>> 
>> 
>> 
>> 
>> 
>> 
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[Elecraft] Fwd: Where is the 1500 KHz. HPF in the K3/K3s

[Michael Blake via Elecraft]

Can anyone provide me with the location of the 160M HPF on the K3s schematic?  
On the KX3 schematic it is clearly labeled “1.8 KHz. HPF” but I have been 
unable to find the similar circuit on the K3s schematic.

Since you must use the RX  IN connector to receive on 630M it is obviously in 
the circuit but I cannot find it on the drawings.

Any help?

73 - Mike - K9JRI





> Begin forwarded message:
> 
> From: Michael Blake via Elecraft 
> Subject: [Elecraft] Where is the 1500 KHz. HPF in the K3/K3s
> Date: March 10, 2019 at 9:38:49 AM EDT
> To: Elecraft Mailing List 
> Reply-To: Michael Blake 
> 
> I understand that a BCB HPF is necessary to protect the PIN diode switches 
> from BCB (Broadcast Band) overload but I can not find it in the K3s 
> schematics.  Can anyone tell me which sheet and components make up this 
> filter.
> 
> I understand that to receive 630M you bypass the HP filter by using the RX IN 
> but I am curious where it is on the schematic.
> 
> Michael Blake
> k9...@mac.com <mailto:k9...@icloud.com>
> 
> 
> 
> 
> 
> 
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[Elecraft] Where is the 1500 KHz. HPF in the K3/K3s

[Michael Blake via Elecraft]

I understand that a BCB HPF is necessary to protect the PIN diode switches from 
BCB (Broadcast Band) overload but I can not find it in the K3s schematics.  Can 
anyone tell me which sheet and components make up this filter.

I understand that to receive 630M you bypass the HP filter by using the RX IN 
but I am curious where it is on the schematic.

Michael Blake
k9...@mac.com 






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[Elecraft] Great SSB receive audio from your K3 or KX3

[Michael Blake via Elecraft]

I use the Elecraft SP3, Bose QC25, Yamaha CM-500, HyperX Cloud Pro and Apple 
earbuds.  I have found the Apple earbuds to produce the most articulate SSB 
reception.

I am 75 years old and wear hearing aids.  With the SP3 and all of the closed 
earmuff headsets, wearing my hearing aids makes a HUGE difference in SSB 
intelligibility.  However, with the Apple earbuds the hearing aids are neither 
required nor make any difference.

Very 73 - Mike - K9JRI







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Re: [Elecraft] TRS connectors - Heil Foster adapter

[Michael Blake via Elecraft]

Don, it also seems obvious that the 1/8” TRS female, use by Heil on their 
adapter, with the ring shorted to the sleeve serves only one purpose.  That 
would be to prevent using less costly, higher quality gaming headsets with 
their adapters.

73 - Mike - K9JRI







> On Feb 12, 2019, at 10:43 AM, Don Wilhelm  wrote:
> 
> Chuck,
> 
> The solution is easy (in my mind).  Just plug the TRS plug into the K3/K3S 
> rear panel mic jack.  That jack is a stereo type, but the ring is not 
> connected to anything.  No adapter required.
> 
> If you want to use the front panel 8 pin Foster jack, you will have to build 
> you own adapter.
> 
> All microphones that are designed for computer (gaming) use have a TRS plug - 
> but the tip and ring are wired together.  That includes the much used CM500 
> headset and many others.  Yes, when used with Heil adapters, they will not 
> work because the ring is shorted to the shell.  The Heil adapters are 
> designed for mono plugs normally used on the Heil headsets.
> 
> 73,
> Don W3FPR
> 
> On 2/12/2019 9:41 AM, hawley, charles j jr wrote:
>> I investigated the Heil Foster adapter and the shorted ring-sleeve is inside 
>> the 1/8 inch phono jack. Not in the easily fixed Foster plug. So it cannot 
>> be fixed...reasonably. Why short it making the adapter unusable for the 
>> excellent and reasonably priced gamer headsets?
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Re: [Elecraft] KPA500 serial interfaces

[Michael Blake via Elecraft]

Andy, in support of your comments I was an active Bell System DATEC 
representative back in the 70s and 80s and multipoint polled RS-232 was very 
common here in the colonies :)

Michael Blake
k9...@mac.com 






> On Feb 11, 2019, at 4:54 PM, Andy McMullin  wrote:
> 
> Not wishing to get into an argument but consider Binary-Synch, Uniscope or 
> UTS400 protocols. They are poll and response, RS232c communications systems. 
> Used from mainframe to (dumb) terminal. They are synchronous RS232 of course 
> rather than asynch and so use the clock and other signals ignored by the [IBM 
> PC] cut down implementation of the RS232 connector. RS232 of course only 
> defining the names and voltages on the connector.
> 
> From memory a Uniscope (U100) “poll” from the mainframe would be the 
> characters: sync, sync, sync, sync, SOH, RID, SID, DID, STX, text, ETX, BCC. 
> 
> Now that was dug out of the 1970’s if nothing was!
> 
> Andy, G8TQH
> 
>> On 11 Feb 2019, at 21:35, Don Wilhelm > > wrote:
>> 
>> Andy,
>> 
>> "Polling" normally refers to a situation like Ethernet and others where a 
>> response from a particular *addressed* device is requested.
>> For RS-232, it is "handshaking" (if implemented) telling the DTE when it is 
>> OK to send data - since there is only one transmitter on an RS-232 
>> signalling line, there is no need for addressing. The transmitting device 
>> expects to communicate to only one receiving device on the other end 
>> (although other receivers can 'listen in'.
>> 
>> I have worked with RS-232 for over 35 years both professionally (both modems 
>> and DCEs for 20 years) and with ham radio gear and PCs after retirement from 
>> that life.
>> 
>> If we wish for clear communication, the terms used are important. Ham Radio 
>> "speak" often confuses the proper engineering terms. You hear of ham radio 
>> software that "polls" the radio - in reality, it is simply issuing a command 
>> to the radio and expects a response to that command.  That is a 
>> command/response scenerio, and is not really polling.
>> 
>> Don W3FPR
>> 
>> On 2/11/2019 3:55 PM, Andy Durbin wrote:
>>> "I have no idea how your "polling" device works, but with RS-232, thereis 
>>> no polling, "
>>> 
>>> Point 1 is true. Point 2 is, in my opinion, not true.
>>> 
>>> A poll is a request for information. The device issuing the poll/request is 
>>> the polling device.   For example, sending IF; to a TS-590 is a data 
>>> request, or poll, for the current IF status.  The TS-590 responds with the 
>>> full IF word.
>>> 
>>> Andy, k3wyc
>>> 
>>> 
>> 
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Re: [Elecraft] KAT500/KPA500 issue

[Michael Blake via Elecraft]

Jack, I had a similar thing happen and it turned out to be a tree branch had 
grown into the antenna path and when on high power the antenna was arcing to 
the tree branch.  Might not be a tree branch but look for any signs of possible 
arching in the antenna, feed line or connectors.

73 - Mike - K9JRI







> On Jan 27, 2019, at 8:10 AM, Jack Satterfield  wrote:
> 
> After 5 years of perfect operation, now a very strange issue
> 
> Bypass SWR 3 or 4:1
> 
> KAT500 tunes to 1.3:1
> 
> Switch amp to operate, operating SBB on first voice KAT500 goes full scale
> swr and amp faults on high swr
> 
> Never had a issue before, antenna is g5rv
> 
> Any ideas appreciated.
> 
> Jack
> 
> W4GRJ
> 
> 
> 
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Re: [Elecraft] Reminder: Winter Field Day (WFD) going on right now...

[Michael Blake via Elecraft]

I was doing just that on 40 this afternoon. I felt like a BIG GUN with my 
K3s/KPA500. 

Great fun. 

Michael Blake
k9...@mac.com


> On Jan 26, 2019, at 8:34 PM, Wayne Burdick  wrote:
> 
> Quite a bit of activity right now in WFD, especially 40 m SSB around 7200 
> kHz. If you're not feeling adventurous, just operate from home and sign "1H 
> ". Have fun!
> 
> Wayne
> N6KR
> 
> 
>> On Jan 24, 2019, at 8:01 AM, Wayne Burdick  wrote:
>> 
>> If, like me, you feel like one field day a year is not enough, then by all 
>> means give Winter Field Day a try. This event has been going on for some 
>> time, with growing participation, and in most respects it’s very similar to 
>> the annual ARRL Field Day. (It is NOT a QRP-only event.) 
>> 
>> The exchange is the number of transmitters in your group, plus a class, and 
>> your ARRL section. Classes include indoor, outdoor, and home (I, O, and H). 
>> For example, operating outdoors with my single transmitter, I’ll be signing 
>> “1O SCV” in CW, or on phone, “one oh Santa Clara Valley.”
>> 
>> The contest period is also similar. This year it starts at 1900 UTC on 
>> Saturday and goes through 1900 UTC on Sunday (2 PM U.S. Eastern time). 
>> Specific band segments are designated to help participants find each other. 
>> Given the time of year, I’d expect the low bands to be very active. 
>> 
>> WFD is a great opportunity to throw a wire in the tree and operate from a 
>> picnic table, tent, or RV, or operate from the comfort of home and give the 
>> shivering masses a few well-deserved QSOs. 
>> 
>> For a complete rules, go to winterfieldday.com.
>> 
>> 73,
>> Wayne
>> N6KR
>> 
>> 
>> 
>> 
>> elecraft.com
> 
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Re: [Elecraft] Latest Elecraft NEWS

[Michael Blake via Elecraft]

Wow, modern stuff!  Mine was a Heathkit AT-1, AC-1 and a BC348Q.

Michael Blake
k9...@mac.com

> On Jan 25, 2019, at 16:57, Mike Markowski  wrote:
> 
> My old time shack, like Don describes, which never fails to make me better 
> appreciate my K3:
> 
>  http://udel.edu/~mm/ham/skcc/ot2.jpg
> 
> 73,
> Mike ab3ap
> 
>> On 1/25/19 4:52 PM, Don Wilhelm wrote:
>> [...]
>> Yes, there was a time when transceivers did not exist, and many transmitters 
>> did not come with a VFO.  Many VFOs were external to the transmitter.
>> 73,
>> Don W3FPR
>>> On 1/25/2019 4:35 PM, Jan wrote:
>>> [...]
>>> QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? So, why 
>>> the Hallicrafters mention ??
>>> [...]
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Re: [Elecraft] [KX3] Urban stealth HF: Inside-the-backpack loop antenna?

[Michael Blake via Elecraft]

Mark (W7MLG),  It is scary how perfectly sane and normal your suggestions sound 
to me :)

Very 73 - Mike - K9JRI







> On Jan 22, 2019, at 4:32 PM, Mark Goldberg  wrote:
> 
> I would expect any high Q antenna like a loop would be detuned by any
> movement or any metal you pass by. One more reason to support automatic
> mobile screwdriver / mag loop antenna tuning on the KX series.
> A flag on a backpack would be more or less ignored. Just put a flag on the
> top of the AX1. Counterpoise is an issue though. Maybe a short one down
> your leg?
> 
> Now, if you dressed as a homeless or otherwise distressed person, lots of
> weird things are possible, tinfoil hat with a big flag, dragged wire
> disguised as one of those fake animals on a leash, etc. The weirder, the
> more people will ignore you.
> 
> Hopefully taken in the spirit of which it is posted.
> 
> 73,
> 
> Mark
> W7MLG
> 
> 
> On Tue, Jan 22, 2019 at 1:57 PM Wayne Burdick n...@elecraft.com [KX3] <
> kx3-nore...@yahoogroups.com> wrote:
> 

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Re: [Elecraft] Battery Low K3

[Michael Blake via Elecraft]

I have seen two.  My Kenwood TS-850 and TS-50 both had leaky button cells.

73 - Mike - K9JRI
 





> On Jan 14, 2019, at 5:05 PM, Bill Frantz  wrote:
> 
> I got a private message asking me how often I had seen button batteries 
> leaking. I seem to remember only once, and no damage to the equipment it was 
> in. Leaking button batteries may be a non-issue.
> 
> 73 Bill AE6JV
> 
> On 1/14/19 at 10:03 AM, indi...@xsmail.com (Petr, OK1RP/M0SIS) wrote:
> 
>> Ups, Bill you scarred me with leaking the cell inside of my K3...:)
>> OK, OK, OK, I will check it tonite...
> 
> ---
> Bill Frantz| Truth and love must prevail  | Periwinkle
> (408)356-8506  | over lies and hate.  | 16345 Englewood Ave
> www.pwpconsult.com |   - Vaclav Havel | Los Gatos, CA 95032
> 
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Re: [Elecraft] Off-topic, but I need help.

[Michael Blake via Elecraft]

Walter, I also like groups.io very much. I suspect that the Elecraft reflector 
was intended to be more of a tech support tool and not a general rag chew 
place. The Elecraft reflector is the only non groups.io forum that I 
participate in. They work well with both direct email and a searchable forum. 

73 - Mike - K9JRI

> On Dec 29, 2018, at 20:38, Walter Underwood  wrote:
> 
> groups.io  provides excellent email list management with a 
> good message board. It also supports subgroups, which can be handy. The 
> hashtag feature would be really nice for tagging K2, K3, KX3, etc.
> 
> I’ve moved all the groups I manage to that system. The North America SOTA 
> group is there: https://nasota.groups.io/g/main 
> 
> 
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/ (my blog)
> 
>> On Dec 29, 2018, at 5:10 PM, Jim Brown  wrote:
>> 
>> Yes. I read more than two dozen email reflectors, and Thunderbird makes it 
>> all very easy. Every reflector has its own mailbox (that shows up as a 
>> folder), and I occasionally add a folder for special discussions (like FD, 
>> county expeditions, tech projects). Those special emails get hand-sorted.
>> 
>> 73, Jim K9YC
>> 
>>> On 12/29/2018 5:00 PM, Robert G Strickland wrote:
>>> I'm with Don on this one. I use Mozilla Thunderbird for email, and its 
>>> filters allow just about any degree and depth of sorting that one might 
>>> like.
>> 
>> 
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Re: [Elecraft] K3s SSB transmitting bandwidth?

[Michael Blake via Elecraft]

Thanks Bob.

Very 73 - Mike - K9JRI






> On Dec 25, 2018, at 4:21 PM, Bob McGraw K4TAX  wrote:
> 
> Just made a quick sweep of my K3S in DATA A mode, no EQ, No SP, and find that 
> it will pass 70 Hz with little to no attenuation. On the high end it will 
> pass 3000 Hz but greatly attenuates 3100 Hz.  This is done with the stock 
> filter of 2.7 kHz.
> 
> At this point in time, I don't have a suitable attenuator and cable to make 
> measurements from the MIC input.
> 
> 73
> 
> Bob, K4TAX
> 
> 
> On 12/25/2018 10:03 AM, Michael Blake via Elecraft wrote:
>> When using the stock K3s 2.7 KHz. roofing filter and all TX EQ settings are 
>> zero (0) what is the normal TX audio rolloff below 300Hz.?
>> 
>> Michael Blake
>> k9...@mac.com <mailto:k9...@icloud.com>
>> 
>> 
>> 
>> 
>> 
>> 
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Re: [Elecraft] [Elecraft-K3] K3s SSB transmitting bandwidth?

[Michael Blake via Elecraft]

Bob, good information as was Don’s response but I am looking for a specific 
piece of information relative the actual response of a K3s on SSB using the 
stock 2.7KHz. filter and zero TX equalization.

Michael Blake
k9...@mac.com <mailto:k9...@icloud.com>






> On Dec 25, 2018, at 12:05 PM, W2XJ  wrote:
> 
> The rule for a balanced sound is that the product of the lowest and highest 
> frequency should be between 450,000 and 500,000. So for a 2.7 KHz cutoff that 
> means a low cut of 166 to 185 Hertz, or rounding that could be 200 Hertz. 
>> On Dec 25, 2018, at 8:03 AM, Michael Blake via Elecraft 
>>  wrote:
>> 
>> When using the stock K3s 2.7 KHz. roofing filter and all TX EQ settings are 
>> zero (0) what is the normal TX audio rolloff below 300Hz.?
>> 
>> Michael Blake
>> k9...@mac.com <mailto:k9...@icloud.com>
>> 
>> 
>> 
>> 
>> 
>> 
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> 
> 
> -=-=-=-=-=-=-=-=-=-=-=-
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> 
> View/Reply Online (#30275): https://groups.io/g/Elecraft-K3/message/30275
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Re: [Elecraft] K3s SSB transmitting bandwidth?

[Michael Blake via Elecraft]

Thanks Don.  The published curves ( 
https://elecraft.com/pages/k3s-8-215-mhz-first-if-crystal-filter-response-curves
 
<https://elecraft.com/pages/k3s-8-215-mhz-first-if-crystal-filter-response-curves>
 ) suggest that there will be significant low end rolloff below 300 Hz. But I 
have not taken the time or effort to attempt to measure it myself.  I believe 
that the ESSB improvements also require a wider filter to be totally effective.

The reason I ask is that when on-the-air testing of my new HyperX Cloud Pro 
headset there was not much change (none actually) noticed when I rolled 50Hz. 
And 100Hz. off to -16.

I thought that I had seen actually measurements of the actual rolloff in the 
past and thought that someone might recall where there were.

Very 73 - Mike - K9JRI


> On Dec 25, 2018, at 11:18 AM, Don Wilhelm  wrote:
> 
> Michael,
> 
> I think the rolloff is not much (in support of those who want ESSB operation. 
>  Much of the rolloff depends on your microphone.
> Jim Brown K9YC has long advocated reducing the TX EQ below 500 Hz or so in 
> order to increase your effective communications power.  An improvement of 3 
> dB or more can be had by reducing the low frequency audio since those low 
> frequencies take a lot of the total power and add little to communications 
> effectiveness.
> 
> 73 and Merry Christmas,
> Don W3FPR
> 
> On 12/25/2018 11:03 AM, Michael Blake via Elecraft wrote:
>> When using the stock K3s 2.7 KHz. roofing filter and all TX EQ settings are 
>> zero (0) what is the normal TX audio rolloff below 300Hz.?

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[Elecraft] K3s SSB transmitting bandwidth?

[Michael Blake via Elecraft]

When using the stock K3s 2.7 KHz. roofing filter and all TX EQ settings are 
zero (0) what is the normal TX audio rolloff below 300Hz.?

Michael Blake
k9...@mac.com 






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[Elecraft] A great headset for the K3 or KX3

[Michael Blake via Elecraft]

https://www.newegg.com/Product/Product.aspx?Item=N82E16826738015 


Santa brought me this new headset for my K Lins and it is SUPEr comfortable and 
I am told that it sounds great on the air.

It is more comfortable that the Bose QC25 that I have and much more comfortable 
than my Yamaha CM500.  Unlike the CM500 the boom microphone is plug-in 
detachable.

It is also excellent physical quality.

Michael Blake
k9...@mac.com 






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Re: [Elecraft] OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Michael Blake via Elecraft]

My Bose Color Soundlink speaker works really well with my KX3.  No distortion, 
no RF even when driving the KPA500 with the KX3.


Michael Blake
k9...@mac.com 






> On Dec 22, 2018, at 5:08 PM, Bob McGraw K4TAX  wrote:
> 
> Sounds like RF getting into the audio amps of the speakers.  May require 
> ferrite beads with a couple of turns thorough the beads on the audio and 
> power cables. 
> 
> Bob, K4TAX
> 
> 
> Sent from my iPhone
> 
>> On Dec 22, 2018, at 3:59 PM, Mark Wheeler via Elecraft 
>> mailto:elecraft@mailman.qth.net>> wrote:
>> 
>> While the K3S is in the shop, I setup the KX3 as my temporary base station, 
>> but the internal speaker leaves a lot to be desired at higher volume. I 
>> connected a cheap set of powered pc speakers to the KX3 but I hear 
>> distortion through the powered speakers when transmitting with the KX3 and 
>> KPA-100 connected to a KPA-500. Has anyone found a high quality powered 
>> speaker to connect to the KX3 that doesn’t distort when transmitting? 
>> 
>> Thanks,
>> Mark/WU6R 
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[Elecraft] AM operation of the K line

[Michael Blake via Elecraft]

Anyone have any experiences or suggestions for using the K3s, KPA500 and KAT500 
on 80 meter AM? 

73 - Mike - K9JRI
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Re: [Elecraft] FT8 Upgrade

[Michael Blake via Elecraft]

The mock tests, not the contest.

Michael Blake
k9...@mac.com 






> On Nov 29, 2018, at 4:26 PM, Bob N3MNT  wrote:
> 
> (1 December, 0200-0300Z)  
> 
> 
> 
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] FT8 Upgrade

[Michael Blake via Elecraft]

John, I am confused with your comment (NA time).  What is the UTC date and time 
of the tests?

Very 73 - Mike - k9JRI






> On Nov 28, 2018, at 4:36 PM, John Harper  wrote:
> 
> And there are 3 upcoming events for the newest version of WSJT-X - and the
> first one is tonight from 0200 - 0300Z. This is a "mock" contest.
> 
> The 2nd one - also a mock test - is this Friday evening (NA time) from
> 0200-0300Z.
> 

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Re: [Elecraft] Killed the KPA500 :)

[Michael Blake via Elecraft]

My KPA500 does not power up in operate.  It always powers up in Standby.

73 - Mike - K9JRI






> On Nov 16, 2018, at 8:52 AM, Michael Walker  wrote:
> 
> I have the schematics, as someone was kind enough to send them to me.
> 
> Yes, I forgot the KPA500 powers up in Operate.  It is the only Amp I own
> that does this.
> 
> I will mention it to Elecraft when I chat with them later today and suggest
> the default should be the other way around.
> 
> Mike va3mw
> 
> 
> On Fri, Nov 16, 2018 at 8:27 AM ANDY DURBIN  wrote:
> 
>> "The unit was powered on and it came up in operate mode while the HF radio
>> was in TX at 100w on 6M. End result is that the magic smoke got out. :)"
>> 
>> 
>> I suspect this is a very common mistake for ops who sometimes use the amp
>> and sometimes operate barefoot. I thought the KPA500 was designed to
>> protect against that user error. Seems I was wrong.
>> 
>> 
>> Suggest you contact support for schematics. Unless their policy has
>> changed recently they will provide them to you.
>> 
>> 
>> Andy, k3wyc
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Re: [Elecraft] K2: KPA100 fan issue + current question

[Michael Blake via Elecraft]

Efficiency is an interesting point in a linear amplifier.  As the linear is 
“efficiency” modulated when it is driven to full power output it does in fact 
approach the 70% efficiency level of a class C amplifier.  Not quite but it 
closes in.  The 30% to 50% rating a linear amplifier normally receives is more 
of an average number which approximates the SSB talking power efficiency.

Very 73 - Mike - K9JRI

> On Nov 9, 2018, at 1:37 PM, Don Wilhelm  wrote:
> 
> Jim,
> 
> That 11 amps would sound more reasonable to me if you can say that the base 
> K2 is being powered separately, but I would expect something closer to 50% 
> efficiency rather than 66%.
> 
> 73,
> Don W3FPR
> 

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Re: [Elecraft] Heil ProSet Headset as offered by Elecraft

[Michael Blake via Elecraft]

Jim, everythingis okay with the hearing aids in my ears and I use an SP3 
speaker, Sony earbuds, Apple earbuds, KOSS PRO headphones, Bose QC25 headsets, 
all without any issue.  As soon as I put on the CM-500s the aids switch to 
magnetic input and work well until the RF is present. 

The question was about the shielding in the Heil headset and not how to 
mitigate the RF. The levels are certainly high. I have learned that the Heil 
speaker elements are not shielded so I will not try them.


Michael Blake
k9...@mac.com

> On Nov 2, 2018, at 20:39, Jim Brown  wrote:
> 
> Hi Michael,
> 
> Are you sure it's the headphones?  What sort of antenna are you using?  The 
> current in an antenna creates a magnetic field that can be quite strong in 
> the near field. When I lived in Chicago, my best antenna for 80 and 160 was a 
> long wire that ended in the shack, and it had a current maxima at the 
> feedpoint (the shack).  The field shut down the RS232 port in my computer 
> sending CW to my K2 using the standard K2 cable with as little as 12 watts! 
> That cable used parallel wires. I fixed the problem by replacing it with 
> CAT5, using one pair for each of the RS232 signalling ports. Twisted pairs 
> STRONGLY resist magnetic coupling. Once I did that, I could crank my Titan 
> power amp to near legal limit power.
> 
> I'm not suggesting that twisted pair is a solution, but I am suggesting that, 
> depending on your antenna and its proximity to your aids, that field could be 
> getting directly into their pickup from your antenna!
> 
> 73, Jim K9YC
> 
>> On 11/2/2018 1:59 PM, Michael Blake via Elecraft wrote:
>> When running more than 100 watts on 80 or 40 the RF causes the hearing aids 
>> to switch modes randomly when the telecoils are activated by a nearby 
>> magnetic field.
> 
> 
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[Elecraft] Heil ProSet Headset as offered by Elecraft

[Michael Blake via Elecraft]

Are the earphone drivers in the Heil Proset magnetically shielded?  The drivers 
in my Yamaha CM-500 are not and they cause problems with the telecoils 
(magnetic pickups) in my Kirkland Signature 7.0 hearing aids.  When running 
more than 100 watts on 80 or 40 the RF causes the hearing aids to switch modes 
randomly when the telecoils are activated by a nearby magnetic field.

None of my other headphones (Bose & Koss) cause this problem when used with the 
hearing aids, K3S and KPA500.  I could not find this information on either the 
Heil or Elecraft site.

Michael Blake
k9...@mac.com 






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Re: [Elecraft] K2 driving KPA500 / KAT500 - one small error in prior post

[Michael Blake via Elecraft]

Dave, while not a K2 I do drive my KPA500 with my KX3 and get about 350 watts 
output on 80 & 40.  I have not used the KPA500 with the KX3 on the higher 
bands.  

The KX3 has 15 watts output.

Michael Blake
k9...@mac.com 






> On Oct 21, 2018, at 3:50 PM, Dauer, Edward  wrote:
> 
> Check that -- one small error in prior post.  The Twins configuration 
> includes the KPA100, not the 500.  Can't type.  Or can't think.  One or the 
> other.
> 
> Ted, KN1CBR
> 
> On 10/21/18, 1:42 PM, "Dauer, Edward"  wrote:
> 
> Having used the KPA1500 long enough to be confident that mine has no 
> obvious bugs, I am trying to decide whether to keep my KPA500 / KAT500 or put 
> it up for sale.
> 
>One possibility would be to use the 500s with a K2.  I have a K2 with the 
> integral KPA100, and two without.  The K2/100 has an RCA jack for the amp 
> keying line which should make things easy - just connect one end to the 
> KPA100 and the other to the KPA500, yes?  
> 
>Using a K2 alone as driver for the KPA500 is the question.  There must be 
> an amplifier keying line somewhere in the K2 circuitry, since it can key a 
> KPA500 [should have read KPA100] in the two-box "twins" configuration; but 
> there is no mechanical output for it.  Anyone done this who can help with 
> ideas?  
> 
>What kind of output from the KPA500 is possible with a barefoot K2 driving 
> it?  Anything else I should know before trying this out?
> 
>The band data is not a problem in either case, since the KPA500 has a 
> one-dit sensing circuit which will be adequate.  (It also has band selection 
> buttons, of course.)
> 
>Tnx, as always, for any advice,
> 
>Ted, KN1CBR
> 
> 
> 
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Re: [Elecraft] CW with my K3s and KX3

[Michael Blake via Elecraft]

I have received many very good suggestions which I will give a try.  I think 
the term “key shyness” is what I need to get over.

All were very good suggestions!  Thanks.

Several questions (2) about readers.  I find the Elecraft K3s, and KX3 readers 
along with the K42, CWGet and fldigi readers to all be equal over time.  My 
favorite reader is “CW Morse” which runs on Mac OS and iOS.  They all seem to 
detract from the fun of the hunt in some way.

Again, thanks for the nudges and pushes which I will try.  Time to close the 
thread I suppose.

Very 73 - Mike - K9JRI







> On Oct 5, 2018, at 11:29 AM, Michael Blake  wrote:
> 
> A bit off topic but I think many Elecraft users are CW people.  My station is 
> completely set up for good CW (K3s, KPA500, KAT500, KX3 with paddle, 
> Vibroplex Code Warrior) and I can send and copy relatively well up to about 
> 20 WPM but I seem to lack the interest to grab the horns and actually engage 
> in a CW contact.  I have several very good code readers and CW keyboard 
> applications but I believe they actually prevent me from really getting into 
> it.
> 
> Any suggestions in how to actually create some interest or thrill that will 
> entice me to engage in more CW operations?
> 
> If you wish to reply off line please use k9jri at Mac dot com.
> 
> Very 73 - Mike - K9JRI
> 
> 
> 
> 
> 
> 

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[Elecraft] CW with my K3s and KX3

[Michael Blake via Elecraft]

A bit off topic but I think many Elecraft users are CW people.  My station is 
completely set up for good CW (K3s, KPA500, KAT500, KX3 with paddle, Vibroplex 
Code Warrior) and I can send and copy relatively well up to about 20 WPM but I 
seem to lack the interest to grab the horns and actually engage in a CW 
contact.  I have several very good code readers and CW keyboard applications 
but I believe they actually prevent me from really getting into it.

Any suggestions in how to actually create some interest or thrill that will 
entice me to engage in more CW operations?

If you wish to reply off line please use k9jri at Mac dot com.

Very 73 - Mike - K9JRI






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Re: [Elecraft] OT - backup software

[Michael Blake via Elecraft]

Yes, knowing your OS would help. On my Mac I use Time Machine for hourly/daily 
backups and SuperDuper for bootable weekly disk images. 

Mike - K9JRI


> On Sep 28, 2018, at 9:36 PM, Carl Yaffey  wrote:
> 
> If you have a Mac, Carbon Copy Cloner.
> 
> 
>> On Sep 28, 2018, at 6:04 PM, John Saxon via Elecraft 
>>  wrote:
>> 
>> I am not happy with my current backup software package.  Any recommendations 
>> on backup software?  Like it to be free, but not necessary.
>> 73,JohnK5ENQ
>> 
> 
> 
> Carl Yaffey  K8NU
> Recording studio.
> cyaffeyno_s...@gmail.com 
> 614 268 6353, Columbus OH
> http://www.carl-yaffey.com
> http://www.grassahol.com
> http://www.bluesswing.com
> 
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Re: [Elecraft] K3 PA3 not working

[Michael Blake via Elecraft]

Is the resettable 2A circuit breaker worth checking first?


Mike - K9JRI






> On Sep 22, 2018, at 7:06 PM, Don Wilhelm  wrote:
> 
> Grant,
> 
> Better than calling sales, email supp...@elecraft.com and ask for an RSA 
> number.
> Do not send anything until you have the RSA number and shipping instructions. 
>  Shipping without that paperwork will only confuse things in the repair 
> process.
> 
> 73,
> Don W3FPR
> 
> On 9/22/2018 6:53 PM, Grant Bright W5XB wrote:
>> Many thanks Don,
>> 
>> Good to know...the tx does ok at 12 watts, but when you turn the power up
>> (hear the click), the power drops off to zero, and the swr disappear.
>> 
>> I have a good Collins wattmeter, that shows the 12 watts fine...but I do
>> have a dummy load. I'll have one tomorrow and try doing a calibration with
>> the utility.
>> 
>> If it is the KPA3, I hope I can pull it and send just it to Elecraft. I'll
>> call Monday about that.
>> 
>> Many thanks for your help.
>> 
>> 73, Grant, W5XB
>> 
>> 
> 
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Re: [Elecraft] Craziest / most rewarding QSOs

[Michael Blake via Elecraft]

Joe, my good 1958 memories include working a JA on 6M AM with my home-brew EMT 
ground plane, GlobeScout 680A, SX-99 and convertor.  Like all the other 
comments I never considered conditions changing. I had a 10M AM rig in my first 
car, in 1959, and worked the world on 29.6 AM.  In fact I met the father of my 
future bride on 10M AM.

Wayne will have to SQUISH this one for sure.  Oh, wait a minute, Wayne started 
this one:)

73 - Mike - K9JRI






> On Sep 14, 2018, at 12:48 AM, Joe K2UF  wrote:
> 
> I remember working western Europe on six in the mid 50s. Using a homebrew
> three element E.M.T. beam ( yes E.M.T.  Could not afford aluminum!!)  The
> rcvr was an old BC radio with a six meter converter and a modified Globe
> Scout transmitter (see my QRZ page.).
> 
> AHH the good old days.
> 
> 73
> 
> Joe k2UF
> 

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Re: [Elecraft] searching for post by Wayne n6kr about counterpoise

[Michael Blake via Elecraft]

Before I could afford a DowKey I used a DPDT knife switch with my AT1 and 
BC348. This was in 1957. I have never used a separate receiver antenna either. 

73 - Mike - K9JRI


> On Sep 9, 2018, at 12:58 PM, Wes Stewart  wrote:
> 
> I suppose that if you're writing a book that has receiving antenna in its 
> title, you're going to have to make a case for them even if you have to 
> stretch a bit.
> 
> I remember bolting a 115 VAC coil Dowkey relay on the back of my DX100 for 
> antenna change over in 1960 or so.  It was several years before I had a 
> transceiver. The idea that separate antennas were the norm until transceivers 
> came along is nonsense, IMHO of course.  Even the publisher of this book, 
> ARRL, had many QST articles, such as "A Novice T.R. Switch", by Lew McCoy in 
> the January 1961 issue that popularized T.R. switches.  Lew even stated, "It 
> is always to the amateur's advantage to use the same antenna for both 
> transmitting and receiving."
> 
> In the scheme of things, if my memory of the last 60 years isn't too faulty, 
> separate RX antennas are a relatively new thing, popularized for the lower 
> hand bands (40, 80 and 160), where of course they are supposed to have 
> advantages. Personally, I'm two (SV/A and FR/G) away from top of the Honor 
> Roll and have 9-band DXCC and I have never used a separate RX antenna.  I 
> guess I'll have to try one someday.
> 
> Wes  N7WS
> 
> 
> 
> 
> 
> 
>> On 9/9/2018 5:58 AM, hawley, charles j jr wrote:
>> The ARRL recently published a book “Receiving Antennas for the Radio 
>> Amateur”. It maintains that “The function of transmitting antennas is to 
>> radiate power efficiently, while the function of receiving antennas is to 
>> present the best signal-to-noise ratio to the receiver”. It maintains that 
>> “using the same antenna for transmitting and receiving roughly coincided 
>> with the advent of the transceiver in the 1950s and 1960s.” And “The glaring 
>> differences in priorities between transmitting and receiving antennas 
>> becomes...well...glaring...when we start looking into the concept of 
>> efficiency.” And “some of the most effective receiving antennas are 
>> abysmally poor performers when efficiency alone is considered”.
>> It’s an interesting book.
>> 
>> Chuck
>> KE9UW
>> 
> 
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Re: [Elecraft] KAT500 Key Line Interrupt when in BYP mode?

[Michael Blake via Elecraft]

Dave, yes my question was “do the VSWR Thresholds work when the KAT500 is in 
the Bypass mode” and the answer was No, they do not.  There are workarounds of 
course but the question was specifically when the KAT500 had been placed in the 
Bypass mode with the front panel button.  The manual did not mention this mode 
selection’s VSWR protections or lack there-of.

73 - Mike - K9JRI






> On Sep 2, 2018, at 2:56 PM, Barry Baines  wrote:
> 
> Mike:
> 
>> On Sep 2, 2018, at 1:27 PM, Michael Blake  wrote:
>> 
>> Dick from Elecraft answered my question.  The short answer to my question 
>> was “no”.
>> 
>> To answer your question, yes the key line interrupt is set for 3.0:1 as it 
>> should be. 
> 
> 
> Thanks for the update and glad to hear that your question was answered.
> 
> That said, my reply was only based upon reading the KAT500 and KPA500 
> manuals.  So I’m wondering how my attempt to be helpful resulted in a 
> “misinterpretation” of what are in the manuals.  Does the VSWR threshold not 
> work in Bypass mode, or is it something else that is in play?
> 
> I’m also wondering (perhaps Dick can answer this) at what point(s) the KPA500 
> “soft” and “hard” faults kick-in on VSWR.  If you’re running at 3.0:1 VSWR 
> with no issues, what are the set points for fault detection?
> 
> 73, 
> 
> Barry, WD4ASW
> 
> 
>> 
>> Mike - K9JRI
>> 
>>> On Sep 2, 2018, at 13:01, Barry Baines  wrote:
>>> 
>>> Mike:
>>> 
>>>> On Sep 2, 2018, at 11:27 AM, Michael Blake via Elecraft 
>>>>  wrote:
>>>> 
>>>> When the KAT500 is powered on but in the Bypass mode will it still open 
>>>> the key line to the KPA500 at the preset level (3.0:1 in my case) if the 
>>>> load suddenly goes above 3:1?
>>> 
>>> To confirm, is your SWR 3.0:1 or 2.0:1??
>>> 
>>> According to the KAT500 manual (page 21) you can use the KAT500 Utility 
>>> Program to set VSWR thresholds for keying an amplifier, “Also, you can set 
>>> an SWR threshold at which the key line will not close to enable the 
>>> external amplifier to protect it from excessive SWR.”  These thresholds can 
>>> be set for all bands or individual bands.  This would presumably work with 
>>> bypass mode as bypass is defined as bypassing the tuning elements in the 
>>> tuner’s matching network while the tuner’s SWR meter continues to function 
>>> and the antenna selector will still switch to the antenna chosen for a 
>>> particular band.  
>>> 
>>> I haven’t made adjustments using the Utility Program so I cannot speak from 
>>> personal experience nor do I know what the default values are for VSWR 
>>> threshold as I’m not currently where my ham station is to confirm.  You 
>>> will need to experiment carefully to ensure that you get the intended 
>>> results.
>>> 
>>> Also keep in mind that the KPA500 protects itself.  See page 19 of the 
>>> KPA500 manual (“Fault Conditions”) which discusses SWR measurements by the 
>>> KPA500 itself where “minor faults” in VSWR will result in a 3 dB reduction 
>>> in output (“Attenuator Faults”) and continues to operate (if the SWR 
>>> improves the attenuator is removed).  In the case of severe SWR problems 
>>> the amplifier goes into standby (“Hard Faults”). Hard faults require 
>>> intervention by the operator to place the amplifier in ‘operate’ presuming 
>>> that the cause of the excessive SWR has been resolved.
>>> 
>>> The more basic question is what SWR levels the KPA500 will operate. 
>>> According to the KPA500 manual (page 17) the amplifier is designed for 
>>> 1.5:1 or less (the amplifier SWR LEDs are green).  Between 1.5 and 2.1 the 
>>> LEDs are yellow, and above 2.1 the LEDs are red.  I could not find a 
>>> reference in the manual that defines at what SWR level an “attenuator 
>>> fault” or a “hard fault” due to high SWR are generated, but this suggests 
>>> that an attenuator fault presumably happens when SWR is above 2.1 which is 
>>> why I’m wondering if there’s a typo in your first sentence regarding 
>>> current SWR.
>>> 
>>> The KAT500 manual (page 21) also notes, “The Elecraft KPA500 amplifier also 
>>> works efficiently into a load SWR of 1.5:1.  Suggested values are 1.8:1 to 
>>> launch an automatic tuning operation and 1.2:1 for bypass.”   
>>> 
>>> 
>>> Hope this helps,
>>> 
>>> Barry Baines, WD4ASW
>>> (Currently in Boston, MA)
>>> 
>>>> 
>&g

Re: [Elecraft] KAT500 Key Line Interrupt when in BYP mode?

[Michael Blake via Elecraft]

Dick from Elecraft answered my question.  The short answer to my question was 
“no”.

To answer your question, yes the key line interrupt is set for 3.0:1 as it 
should be. 

Mike - K9JRI

> On Sep 2, 2018, at 13:01, Barry Baines  wrote:
> 
> Mike:
> 
>> On Sep 2, 2018, at 11:27 AM, Michael Blake via Elecraft 
>>  wrote:
>> 
>> When the KAT500 is powered on but in the Bypass mode will it still open the 
>> key line to the KPA500 at the preset level (3.0:1 in my case) if the load 
>> suddenly goes above 3:1?
> 
> To confirm, is your SWR 3.0:1 or 2.0:1??
> 
> According to the KAT500 manual (page 21) you can use the KAT500 Utility 
> Program to set VSWR thresholds for keying an amplifier, “Also, you can set an 
> SWR threshold at which the key line will not close to enable the external 
> amplifier to protect it from excessive SWR.”  These thresholds can be set for 
> all bands or individual bands.  This would presumably work with bypass mode 
> as bypass is defined as bypassing the tuning elements in the tuner’s matching 
> network while the tuner’s SWR meter continues to function and the antenna 
> selector will still switch to the antenna chosen for a particular band.  
> 
> I haven’t made adjustments using the Utility Program so I cannot speak from 
> personal experience nor do I know what the default values are for VSWR 
> threshold as I’m not currently where my ham station is to confirm.  You will 
> need to experiment carefully to ensure that you get the intended results.
> 
> Also keep in mind that the KPA500 protects itself.  See page 19 of the KPA500 
> manual (“Fault Conditions”) which discusses SWR measurements by the KPA500 
> itself where “minor faults” in VSWR will result in a 3 dB reduction in output 
> (“Attenuator Faults”) and continues to operate (if the SWR improves the 
> attenuator is removed).  In the case of severe SWR problems the amplifier 
> goes into standby (“Hard Faults”). Hard faults require intervention by the 
> operator to place the amplifier in ‘operate’ presuming that the cause of the 
> excessive SWR has been resolved.
> 
> The more basic question is what SWR levels the KPA500 will operate. According 
> to the KPA500 manual (page 17) the amplifier is designed for 1.5:1 or less 
> (the amplifier SWR LEDs are green).  Between 1.5 and 2.1 the LEDs are yellow, 
> and above 2.1 the LEDs are red.  I could not find a reference in the manual 
> that defines at what SWR level an “attenuator fault” or a “hard fault” due to 
> high SWR are generated, but this suggests that an attenuator fault presumably 
> happens when SWR is above 2.1 which is why I’m wondering if there’s a typo in 
> your first sentence regarding current SWR.
> 
> The KAT500 manual (page 21) also notes, “The Elecraft KPA500 amplifier also 
> works efficiently into a load SWR of 1.5:1.  Suggested values are 1.8:1 to 
> launch an automatic tuning operation and 1.2:1 for bypass.”   
> 
> 
> Hope this helps,
> 
> Barry Baines, WD4ASW
> (Currently in Boston, MA)
> 
>> 
>> The situation is a remote autotuner connected to a 33’ vertical that I use 
>> for bands that I do not have a resonant antenna.  On those bands the KAT500 
>> is in the BYP mode.  A remote switch brings all of the antenna choices in on 
>> a single coax which connected to the KAT500.
>> 
>> 73 - Mike - K9JRI
>> 
>> 
>> 
>> 
>> 
>> 
>> 
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[Elecraft] KAT500 Key Line Interrupt when in BYP mode?

[Michael Blake via Elecraft]

When the KAT500 is powered on but in the Bypass mode will it still open the key 
line to the KPA500 at the preset level (3.0:1 in my case) if the load suddenly 
goes above 3:1?

The situation is a remote autotuner connected to a 33’ vertical that I use for 
bands that I do not have a resonant antenna.  On those bands the KAT500 is in 
the BYP mode.  A remote switch brings all of the antenna choices in on a single 
coax which connected to the KAT500.

73 - Mike - K9JRI







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Re: [Elecraft] Filter Recommendations

[Michael Blake via Elecraft]

That is a really good question Lee and the answer can be very complicated.  It 
depends is probably the best answer.

An everyday experience is what I used in my determination to purchase neither 
was:

When in my daily 3710 LSB group QSO there would regularly be an interfering 
station on 3713 who was a bit wide.  The rest of the 3713 group was not an 
issue, only this one station.  Since he was jus above us and we were on LSB 
none of the filters would really offer much relief.

At other times there would be stations on 3707 that had somewhat poor IMD 
resulting in some power in what would be their USB.  This would interfere and 
depending on how wide the IMD was a sharper filter might help, but maybe not.

What it all boiled down to, for me, was how much strong interference was I 
experiencing and was the bulk of it in the narrow gap between the filter 
differences.  Since the filters only serve to protect the DSP from overload I 
have not found compelling reasons to purchase one.  When I do purchase one it 
will be the 2.1 as it offers the most promise with nearby interference and 
overload.

That was just where I wound up:)

Very 73 - Mike - K9JRI







> On Aug 26, 2018, at 8:45 AM, Lee Murrah via Elecraft 
>  wrote:
> 
> I am looking to upgrade my K3S with filters and am using the DX version of 
> the radio as a guide.  What is the advantage of the 2.8 KHz filter over the 
> stock 2.7?  What does the 2.1 KHz filter do for you?
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Re: [Elecraft] WSJT-X Band Following

[Michael Blake via Elecraft]

Yes, that will work Richard. I connect the K3s to my Mac mini via the Elecraft 
supplied USB to USB cable.  It does not go to the RS232 on the K3s.  If you 
already have the K3s and the MAC connected via the USB cable then you just need 
to select the correct port on the WSJT-X configuration.  If you are already 
using the connection for a logging program, like MacloggerDx or RUMP the only 
one program at a time can use the connection.

Also, look into JT-Bridge to connective logging program to WSJT-X and let 
WSJT-X control the radio.

Michael Blake





> On Aug 23, 2018, at 6:01 PM, Richard  wrote:
> 
> K3S, Mac Sierra 10.12, WSJT-X version 1.8.0.
> 
> Everything is working perfectly. Well, 99.874% is working perfectly. The 
> little WSJT-X dropdown menu for band selection doesn’t follow band changes I 
> make at the K3S. I am told this can be facilitated with “a cable” between the 
> K3S and the Mac: RS-232 connector at the K3S and USB-A at the Mac.?
> 
> Is this correct? If not, what DO I need?
> 
> Do I need to make any Menu or Config changes to activate this?
> 
> I’d like to make this work so I won’t have a ton of incorrect band notations 
> in the log.
> 
> Cheers!
> 
> Richard — W4KBX
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Re: [Elecraft] Noise cancelling headphones

[Michael Blake via Elecraft]

I also used a QC15 and then moved to the QC25 and found that either is a very 
comfortable headset to wear for long periods of time.  The little microphone 
that “dangles” in the cord actually works quite well with both the K3s and KX3 
in most surroundings.  All that it requires is a good TRRS jack to two TRS male 
plugs adapter.

 I have tried a couple of the add on boom mics but I prefer to use my desk 
microphone (Shure SM57 or EV RE50N/D B) most of the time. 

Very 73 - Mike - K9JRI






> On Aug 10, 2018, at 12:20 PM, Mike Kasrich  wrote:
> 
> I've used the QC-15 and the are good. I had a headset buddy but the boom was 
> "limp" it worked. I have a Uflymic for the QC15 if anyone has an interest.
> 
> 
> My choice now is the Bose QC25 and modmic by Antlion.  The QC25 has been 
> replaced by the QC35 so you can get a "25" in an affordable range.
> 
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Re: [Elecraft] Thank you to Elecraft

[Michael Blake via Elecraft]

This has been a very interesting thread for me.  I too am a very satisfied 
elecraft customer, mainly as a result of EXCELLENT service.  I have a T1, SG3, 
KX3, PX3, K3s, SP3, KPA500 and KAT500.

When the KX3 was about 10 months old I noticed that a couple of the yellow 
painted letters on the face plate were popping off.  The faceplate was quickly 
replaced. My KPA500 had a very unusual fault in that 4 of the PEM nuts in the 
bottom chassis plate were the wrong thread size.  Once diagnosed the bottom 
plate was quickly replaced I I rebuilt the amplifier.  After about 6 months I 
turned on the station and keyed a couple of “dits” on the paddle and the KPA500 
blew the tops off of both output FETS.  Elecraft quickly had a replacement 
power module on the way to me.

This week I finally figured out that a distorted SSB audio report I received 
since I built the K3s as really present only when using more than 12 watts 
output.  Whenever the KPA3A kicked in there was a noticeable distortion on my 
signal.  You guessed it, a replacement KPA3A module was in the mail and should 
arrive this Wednesday,

Their service is excellent and I am a VERY SATISFIED customer.  My wife’s 
comment, on learning that I was waiting for another replacement part, was “you 
certainly seem to have a lot of problems with that stuff”.

Go figure :)

Oh yeah, I am also a MAC lover :)

Very 73 - Mike - K9JRI







> On Aug 6, 2018, at 12:40 PM, Gary Smith  wrote:
> 
> Between my recent orders to upgrade my 
> Backup K3 and my recent service (update) 
> to my K3s which just returned today, I 
> want to thank anyone from Elecraft who may 
> read this.
> 
> My K3s was attended to quickly and 
> returned in marvelous condition and thank 
> you for the updates. The shipping of the 
> items for the K3 was done expeditiously 
> and the quality of communication was to my 
> estimation, perfect.
> 
> To be exact: Every communication I have 
> ever had with Elecraft be it from 
> reception, orders, tech help, fairness in 
> pricing to shipping has been an exemplary 
> experience which dates back to my first 
> contact in 2008.
> 
> I could not ask for more and I am truly 
> satisfied with this experience. If 
> everyone else provided this quality of 
> product and support, I'd never know just 
> how good it really is.
> 
> I'm just saying.
> 
> 73,
> 
> Gary
> KA1J
> 
> 
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Re: [Elecraft] K3s+KPA500 SSB audio distortion

[Michael Blake via Elecraft]

Bruce, Elecraft is replacing mine too. They came to that conclusion after 
directing me to make a few tests and report the results. 

73 - Mike - K9JRI


> On Aug 1, 2018, at 20:54, "k...@comcast.net"  wrote:
> 
> A local ham had the exact same problem. It was not a problem with his setup.  
> Elecraft replaced the PA board and the problem went away.BruceKS4V
>  Original message From: Jim Miller  
> Date: 8/1/18  10:42 AM  (GMT-06:00) To: Ignacy  Cc: 
> elecraft@mailman.qth.net Subject: Re: [Elecraft] K3s+KPA500 SSB audio 
> distortion 
> I ran my KPA500 for several years at 500w and often received unsolicited 
> “great audio” reports. CM500 was my headset. 
> 
> Something is wrong with your setup. 
> 
> Jim ab3cv (have kpa1500 now)
> 
> On Aug 1, 2018, at 11:09 AM, Ignacy  wrote:
> 
> Could it be RF feedback? You can check it by transmitting into a dummy load
> or lowering the drive power.
> Ignacy, NO9E  
> 
> 
> 
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Re: [Elecraft] K3s+KPA500 SSB audio distortion

[Michael Blake via Elecraft]

Elecraft tech support suspects a bad KPA3A and has arranged for a module swap.

It is nice that you (me) can be so pleased even when you encounter a problem.  
Great company.

Very 73 - Mike - K9JRI






> On Aug 1, 2018, at 10:19 AM, Michael Blake  wrote:
> 
> While on the air on 3710 SSB I receive audio reports that say my transmitted 
> audio is somewhat muffled or nasal.  Making adjustments to mic gain, 
> compression levels, TX EQ seems to make no difference to this report. These 
> adjustments do change the sound of the audio but do not reduce the reports of 
> muffled or nasal characteristics.
> 
> I normally run the KPA500 at 500 watts PEP output and the K3s is set to 18 
> watts to achieve this output.
> 
> This morning I suspected that this nasal sound might be related to running 
> the K3s at 18 watts as that uses both the 100 watt amplifier and the 12 watt 
> amplifier but in series at very low drive levels.  As a test I cut off the 
> KPA500 and ran the K3s at 100 watts and the distortion was gone.  As a second 
> test I dropped the drive to 11.9 watts which dropped off the 100 watt 
> amplifier module and runs the low power module at almost full power and the 
> audio was still clean with the KPA500 delivering about 300 watts PEP.
> 
> Is this something that anyone else has observed?  Are there any built in 
> tests or adjustments that might help this issue?  I have run the transmitter 
> gain calibration at all three power levels with satisfactory results.
> 
> Oh yes,….  The condition is the same using a dynamic mic (EV RE50), an 
> Electret Mic (MH4 & CM500) or mic audio from a USB connected computer (Blue 
> Yeti).
> 
> Very 73 - Mike - K9JRI
> 
> 
> 
> 
> 
> 
> 
> 
> 
> Michael Blake
> k9...@mac.com 
> 
> 
> 
> 
> 
> 

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[Elecraft] K3s+KPA500 SSB audio distortion

[Michael Blake via Elecraft]

While on the air on 3710 SSB I receive audio reports that say my transmitted 
audio is somewhat muffled or nasal.  Making adjustments to mic gain, 
compression levels, TX EQ seems to make no difference to this report. These 
adjustments do change the sound of the audio but do not reduce the reports of 
muffled or nasal characteristics.

I normally run the KPA500 at 500 watts PEP output and the K3s is set to 18 
watts to achieve this output.

This morning I suspected that this nasal sound might be related to running the 
K3s at 18 watts as that uses both the 100 watt amplifier and the 12 watt 
amplifier but in series at very low drive levels.  As a test I cut off the 
KPA500 and ran the K3s at 100 watts and the distortion was gone.  As a second 
test I dropped the drive to 11.9 watts which dropped off the 100 watt amplifier 
module and runs the low power module at almost full power and the audio was 
still clean with the KPA500 delivering about 300 watts PEP.

Is this something that anyone else has observed?  Are there any built in tests 
or adjustments that might help this issue?  I have run the transmitter gain 
calibration at all three power levels with satisfactory results.

Oh yes,….  The condition is the same using a dynamic mic (EV RE50), an Electret 
Mic (MH4 & CM500) or mic audio from a USB connected computer (Blue Yeti).

Very 73 - Mike - K9JRI









Michael Blake
k9...@mac.com 






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Re: [Elecraft] I/Q output for P3

[Michael Blake via Elecraft]

Add me to the I/Q for the P3 list.

Very 73 - Mike - K9JRI






> On Jul 28, 2018, at 3:26 AM, K8TE  wrote:
> 
> Add me to this ever-growing list.
> 
> 73, Bill, K8TE
> 
> 
> 
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] KPA500 thermal clicks

[Michael Blake via Elecraft]

Andy, mine sounds very much like your recording.  When on FT8 and using the 
KPA500 I usually set its fan to 2 and it seldom ramps up past that speed.  

Your recording sounds very normal to me.  Maybe not a good thing but normal :)

73 - Mike - K9JRI







> On Jul 18, 2018, at 7:25 PM, ANDY DURBIN  wrote:
> 
> 
> I placed my Android phone on top of my KPA500 and made a recording while 
> making a few cycles of FT8 TX/RX.  The audio files can be found here:
> 
> https://www.dropbox.com/sh/amfy3dz8pgl083n/AAAKi2GYripXyIDjiLpJ2hDwa?dl=0
> 
> 
> One file is the raw recording.  The second has been processed in Audacity to 
> amplify to 0 dB peak.  The file starts before the first TX. Next the hum of 
> the transformer can be heard with FT8 modulation in the background from TX 
> moni.   As the recording progresses the changes in fan speed can be heard.   
> The click are always well above the fan noise.
> 
> I used this recording to perform some spectral analysis of the clicks.  I 
> took one sample at the click and another sample of the noise just before the 
> click.  I then subtracted the noise from the click and I think I have a 
> reasonable click signature to use as a baseline for evaluating any mechanical 
> changes I make in an attempt to reduce the clicks.
> 
> Crank it up and enjoy, especially if you think it's normal.
> 
> 73,
> Andy k3wyc
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Re: [Elecraft] KPA500 thermal clicks

[Michael Blake via Elecraft]

FT8 is a weak signal mode.  That does not always equate to low power.  I have 
seen many instances on 6M where 400 watts resulted in a -15 signal report from 
the far end.

Many of the K1JT modes started with moon bounce where it often took 1500 watts 
to get a weak signal back.

Very 73 - Mike - K9JRI







> On Jul 17, 2018, at 10:15 AM, turnbull  wrote:
> 
> I thought FT8 was a low power mode.   Am I wrong?   I am not referring to Fox 
> Hound mode.
> 
> 73 DOUG EI2CN
> 
> 
> 
> Sent from my Samsung Galaxy smartphone.
> 
> ---- Original message ----
> From: Michael Blake via Elecraft 
> Date: 17/07/2018 14:12 (GMT+00:00)
> To: Nr4c 
> Cc: Elecraft Reflector , ANDY DURBIN 
> 
> Subject: Re: [Elecraft] KPA500 thermal clicks
> 
> While possibly my imagination, after a few months of use I loosened all of 
> the Z bracket to heatsink screws and side panel to heatsink screws and then 
> retightened all of them plus the top cover to Z bracket screws.  That seemed 
> to reduce the clicking.
> 
> Very 73 - Mike - K9JRI
> 
> 
> 
> 
> > On Jul 17, 2018, at 9:05 AM, Nr4c  wrote:
> > 
> > “Clicks” caused by the “Z” bracket are well documented and normal. 
> > Personally, I don’t find this “intolerable” or even slightly annoying. My 
> > wall clock “ticks” every second.  
> > 
> > Sent from my iPhone
> > ...nr4c. bill
> > 
> > 
> >> On Jul 17, 2018, at 7:56 AM, ANDY DURBIN  wrote:
> >> 
> >> The clicking of my KPA500 is almost intolerable and I'd like to know if 
> >> what I'm experiencing is typical.
> >> 
> >> 
> >> In an FT8 TX/RX cycle  with output power 126 W my KPA500 clicks 7-8 times 
> >> during 15 second transmit and 7-8 times during 15 second receive.  In 
> >> these TX/RX cycles my logger shows the finals temperature swings between 
> >> 57 deg C and 63 deg C.   During  this test the KPA500 was seeing an SWR of 
> >> 1.02:1  and calculated PA dissipation was 307 W.
> >> 
> >> 
> >> I don't think this temperature swing is likely to cause the heat sink to 
> >> expand and contract significantly.  The thermal mass of the heat sink is 
> >> quite large and the heating and cooling periods are short.The first 
> >> click happens almost as soon as the KPA500 is keyed.
> >> 
> >> 
> >> I think it is possible that the clicks are caused by expansion and 
> >> contraction  of the finals at their mounting points.   Is that likely and, 
> >> if so, why would it be considered normal?
> >> 
> >> 
> >> 73,
> >> 
> >> Andy k3wyc
> >> __
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Re: [Elecraft] KPA500 thermal clicks

[Michael Blake via Elecraft]

While possibly my imagination, after a few months of use I loosened all of the 
Z bracket to heatsink screws and side panel to heatsink screws and then 
retightened all of them plus the top cover to Z bracket screws.  That seemed to 
reduce the clicking.

Very 73 - Mike - K9JRI




> On Jul 17, 2018, at 9:05 AM, Nr4c  wrote:
> 
> “Clicks” caused by the “Z” bracket are well documented and normal. 
> Personally, I don’t find this “intolerable” or even slightly annoying. My 
> wall clock “ticks” every second.  
> 
> Sent from my iPhone
> ...nr4c. bill
> 
> 
>> On Jul 17, 2018, at 7:56 AM, ANDY DURBIN  wrote:
>> 
>> The clicking of my KPA500 is almost intolerable and I'd like to know if what 
>> I'm experiencing is typical.
>> 
>> 
>> In an FT8 TX/RX cycle  with output power 126 W my KPA500 clicks 7-8 times 
>> during 15 second transmit and 7-8 times during 15 second receive.  In these 
>> TX/RX cycles my logger shows the finals temperature swings between 57 deg C 
>> and 63 deg C.   During  this test the KPA500 was seeing an SWR of 1.02:1  
>> and calculated PA dissipation was 307 W.
>> 
>> 
>> I don't think this temperature swing is likely to cause the heat sink to 
>> expand and contract significantly.  The thermal mass of the heat sink is 
>> quite large and the heating and cooling periods are short.The first 
>> click happens almost as soon as the KPA500 is keyed.
>> 
>> 
>> I think it is possible that the clicks are caused by expansion and 
>> contraction  of the finals at their mounting points.   Is that likely and, 
>> if so, why would it be considered normal?
>> 
>> 
>> 73,
>> 
>> Andy k3wyc
>> __
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Re: [Elecraft] OT OT OT OT Vanity call question OT OT OT OT

[Michael Blake via Elecraft]

Now THAT’s Funny :)

Very 73 - Mike - K9JRI







> On Jul 13, 2018, at 5:27 PM, G4GNX  wrote:
> 
> and the owners of ELECRAFT have just posted in this thread!
> 
> 73,
> 
> Alan. G4GNX
> 
> -Original Message- From: Mike Morrow Sent: Friday, July 13, 2018 
> 10:21 PM To: ANDY DURBIN ; elecraft@mailman.qth.net Subject: Re: [Elecraft] 
> OT OT OT OT Vanity call question OT OT OT OT 
>> I want to learn about vanity call signs, why would I want one?
> 
> You have posted to the wrong list.  This is the ***Elecraft*** list.
> 
> Mike / KK5F
> 
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Re: [Elecraft] KX3 and DCS codes

[Michael Blake via Elecraft]

I don’t believe that it is possible for the KX3 to generate DCS but is it 
possible for you to jointly enable DCS and CTCSS on your own repeater with a 
“secret” CTCSS code for yourself?

Michael Blake
k9...@mac.com 






> On Jul 11, 2018, at 7:31 AM, w5...@comcast.net wrote:
> 
> Fellows, is there anyway I KX3 can be made to generate a TX DCS code on VHF? 
> I would love to use my KX3 to get into my own repeater!!
> 
> thanks
> 
> W5SUM
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Re: [Elecraft] KPA500 installation on side?

[Michael Blake via Elecraft]

Actually the feet are on the left side, not the right.  They are on the same 
end that the transformer is on and would be in the perfect position to sit 
standing upright.

Michael Blake
k9...@mac.com 






> On Jul 9, 2018, at 2:37 PM, hawley, charles j jr  
> wrote:
> 
> Possible to swap covers?
> 
> Chuck Hawley
> c-haw...@illinois.edu
> 
> Amateur Radio, KE9UW
> aka Jack, BMW Motorcycles
> 
> From: elecraft-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net] on 
> behalf of Jack Brindle via Elecraft [elecraft@mailman.qth.net]
> Sent: Sunday, July 08, 2018 10:49 PM
> To: Jeff Blaine
> Cc: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] KPA500 installation on side?
> 
> I know that there are feet are on the right side of the case, but if I were 
> to place the KPA500 on its side, i think I would create a stand so that it 
> can sit on the left side. Why?
> The big weight (power toroid) is on the left side, while the heat generators 
> (the PA transistors) are on the right. The center of gravity would be lower, 
> cables would be down low (especially the power cable), and the fans up high.
> The only heat generators on the left side are the power regulators (for +5 
> and +12V). They don’t generate nearly as much heat as the PA. The down side? 
> The carry handle is on the left. That’s why a short cradle would be needed to 
> lift the case above the handle extension.
> 
> Just opinion, not an official recommendation. Mine sits nicely on its bottom 
> feet with the KAT500 on top. That allows me to cable the two very nicely 
> using custom cables.
> 
> 73,
> Jack, W6FB
> 
>> On Jul 8, 2018, at 8:25 PM, Jeff Blaine  wrote:
>> 
>> To clarify - by "side" i mean the side that you would call the left or right 
>> side of the case - that is what i'm considering to have down.  Not the face 
>> or back.  Just rotating the amp 90 deg.
>> 
>> 73/jeff/ac0c
>> alpha-charlie-zero-charlie
>> www.ac0c.com
>> 
>> On 08-Jul-18 6:22 PM, Dauer, Edward wrote:
>>> Oops.  My error.  I read KPA1500, not 500.  Wishful thinking on my part.
>>> 
>>> Move to strike prior testimony.
>>> 
>>> Ted , KN1CBR
>>> 
>>> 
>>> 
>>> On 7/8/18, 5:16 PM, "Dauer, Edward"  wrote:
>>> 
>>>   Just last week I sent the same question to Elecraft Support.  The 
>>> answer I got was yes, it can be, with two caveats.  First, be sure to leave 
>>> the 4 inches of free air clearance next to the top (top as in standard 
>>> orientation), and don't set it so that the LEDs are on the floor.  The 
>>> orientation isn't odd, really.  If it is resting on its right side the 
>>> power switch will be on the rear, but very near the top edge.  That's how 
>>> mine will be, when it arrives this week --- I hope..
>>> Ted, KN1CBR
>>>  --
>>> Message: 9
>>>Date: Sun, 8 Jul 2018 10:56:03 -0700
>>>From: Mark Goldberg 
>>>To: Elecraft Mailing List 
>>>Subject: [Elecraft] KPA500 installation on side?
>>>Message-ID:
>>> 
>>> 
>>>Content-Type: text/plain; charset="UTF-8"
>>> Can the KPA500 be installed on it's side? There are feet 
>>> there. I want to
>>>install it in an RV and there is more room for wiring and fan air 
>>> movement
>>>that way.
>>> A search did not turn up any answers.
>>> 73,
>>> Mark
>>>W7MLG
>>> 
>>> __
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>>> Message delivered to keepwalking...@ac0c.com
>> 
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Re: [Elecraft] An OCD thought about the KAT500

[Michael Blake via Elecraft]

While my obsession for everything matching perfectly may not be everyone’s cup 
of tea it speaks volumes about a company that will go out of the way to cater 
to such a whim.  Not only were the feet complementary but they were quickly 
shipped and arrived in only four days on a holiday week.

Outstanding service!  Thank you Elecraft.

If you look at my photo on QRZ.com  you ill see the bottom 
edge of the KAT500 in perfect alignment with the bottom edge of the SP3.  If 
that does not give you warm feeling then you have already read too much of this 
post:)

Very 73 - Mike - K9JRI


> On Jun 29, 2018, at 1:29 PM, Michael Blake  wrote:
> 
> A complimentary pair of rear feet are on the way from Elecraft.  What a great 
> company!
> 
> Thank you VERY much.
> 
> Very 73 - Mike - K9JRI
> 
> 
> 
> 
> 
> 
> 
>> On Jun 28, 2018, at 1:15 PM, Michael Blake > > wrote:
>> 
>> A perfect solution is at hand.  I had two left over rear rubber feet from a 
>> KPA500 replacement bottom cover kit and I found that they will mount using 
>> existing screw locations on the bottom of the KAT500.  Using these feet 
>> makes the KAT500 match perfectly with the height of the SP3 that it is next 
>> to.
>> 
>> I have an email off to Elecraft parts to try and buy two more of these feet 
>> so that everything matches…… as it should…… I think :)
>> 
>> Michael Blake
>> k9...@mac.com 
>> 
>> 
>> 
>> 
>> 
>> 
>>> On Jun 27, 2018, at 3:04 PM, Michael Blake >> > wrote:
>>> 
>>> I received and completed my KAT500k this morning and I must say it is quite 
>>> a tuner.  Very nice indeed. Very capable.
>>> 
>>> As I integrated it into my K-Line station (K3s, P3 with TX Mon, SP3, 
>>> KAT500) I immediately noticed that the KAT500 does not have the same height 
>>> feet on it as any other cabinet in the K-Line.  Whatever it is placed next 
>>> to it sits a bit over 1/8” lower.
>>> 
>>> I realize that it probably does match the W2 wattmeter but with four other 
>>> SWR measuring devices (K3s, P3/TX Mon, KPA500, KAT500) I really didn’t plan 
>>> to buy one of those just to even up the cabinets :).
>>> 
>>> So for us OCD folks maybe it would be possible to include both height feet 
>>> in the kit so that it could match the rest of the product line when desired.
>>> 
>>> If you take a look at my picture on QRZ.com  you can 
>>> clearly see how it throws everything out of balance :)
>>> 
>>> Very 73 - Mike - K9JRI
>>> 
>>> 
>>> 
>>> 
>>> 
>> 
> 

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[Elecraft] Drive KPA500 with either K3s or KX3 keying question

[Michael Blake via Elecraft]

Prior to receiving my KAT500 I have routinely connected my K3S to the KPA500 
via the AUX cable and the KX3 keying output to the PA KEY jack via an RCA to 
RCA cable at the same time.  The RF input from the K3S or the KX3 goes through 
a two position coax switch.  Having both connected at the same time has not 
seemed to cause any identifiable problem in going back and forth between the 
two driving transceivers.

The question is may I make the same connections through the KAT500, the K3S 
connected through the KAT500 via AUX cables and the KX3 connected to the KAT500 
via the PTT RLY connections.  It appears that the internal inhibit relay opens 
both lines when an interrupt is necessary and that other than that the two 
connections are in parallel.

Very 73 - Mike - K9JRI






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