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

2018-11-02 Thread 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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Re: [Elecraft] Heil ProSet Headset as offered by Elecraft

2018-11-02 Thread Jim Brown 

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] KAT500 as a remote-controlled tuner

2018-11-02 Thread Wayne Burdick 
Someone asked me recently whether a KAT500 could be remote-controlled and 
placed closer to the antenna(s). The answer is yes: All functions of the KAT500 
can be conveniently controlled via our KAT500 Utility program, which runs on 
any PC. Alternatively, you could write your own controller application using 
the KAT500's simple 2-letter command set.

The tuner would have to be housed in a weather-proof enclosure of your own 
choice. This part of the project is left as an exercise for the reader. The 
KAT500 is quite compact, though, so many different NEMA (etc.) enclosures could 
be used.

73,
Wayne
N6KR

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[Elecraft] Heil ProSet Headset as offered by Elecraft

2018-11-02 Thread 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] K3 - TX EQ settings not remembered.

2018-11-02 Thread Randy Moore 
It's been a while since I used Win4K3, but I believe the EQ settings can be
set there. That's probably why yours are getting set back.

73,
Randy, KS4L

On Fri, Nov 2, 2018, 3:07 PM Don Wilhelm  Gary,
>
> Email Tom (author of Win4K3) and see if he has some kind of workaround.
>
> 73,
> Don W3FPR
>
> On 11/2/2018 3:59 PM, Gary Smith wrote:
> > Don,
> >
> > I'll give your suggestion a try & see how
> > that does.
> >
> > I do use Win4K3, I need it to use WSJT as
> > WSJT doesn't like to share ports. I used
> > to use LP-Bridge which let me
> > simultaneously run all my software
> > flawlessly, till WSJT... and I fast
> > discovered it would not play nice unless
> > WSJT had sole communication with my
> > K3/K3s.
> >
> > With Win4K3 I can use all the software
> > simultaneously including WSJT, logging
> > program, N1MM & MMTTY without having to
> > shut all the other software down every
> > time I want to change modes or software.
> >
> > If it wasn't for WSJT making this issue,
> > it would be simple to just keep doing what
> > I was doing with LP-Bridge. As I do use
> > MSK144 & some FT8 and want to keep my
> > logging program running, I need to keep
> > using Win4K3.
> >
> > Tom wrote a clever bit of software,
> > perhaps there is a way to tell it not to
> > change EQ settings, I'll have to check
> > that too.
> >
> > Thanks & 73,
> >
> > Gary
> > KA1J
> >
> >
> >
> >
> >
> >> Gary,
> >>
> >> Are you using any software to control the K3?
> >> I have just been informed that Win4K3 will often change the EQ
> >> settings.
> >>
> >> Remove the USB or RS-232 connection and try it with only the K3, then
> >> set the SSB TX EQ.  Check later to see if it has changed.
> >>
> >> 73,
> >> Don W3FPR
> >>
> >> On 11/2/2018 3:29 PM, Gary Smith wrote:
> >>> Hi Don,
> >>>
> >>> No, I set them for SSB and at a later time
> >>> the TX EQ is flat and I have to change it
> >>> back to the settings to fit my mic. I
> >>> don't use AM except to listen to broadcast
> >>> stations & listen to the nature of RFI.
> >>>
> >>
> >
> >
> >
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Re: [Elecraft] K3 - TX EQ settings not remembered.

2018-11-02 Thread Don Wilhelm 

Gary,

Email Tom (author of Win4K3) and see if he has some kind of workaround.

73,
Don W3FPR

On 11/2/2018 3:59 PM, Gary Smith wrote:

Don,

I'll give your suggestion a try & see how
that does.

I do use Win4K3, I need it to use WSJT as
WSJT doesn't like to share ports. I used
to use LP-Bridge which let me
simultaneously run all my software
flawlessly, till WSJT... and I fast
discovered it would not play nice unless
WSJT had sole communication with my
K3/K3s.

With Win4K3 I can use all the software
simultaneously including WSJT, logging
program, N1MM & MMTTY without having to
shut all the other software down every
time I want to change modes or software.

If it wasn't for WSJT making this issue,
it would be simple to just keep doing what
I was doing with LP-Bridge. As I do use
MSK144 & some FT8 and want to keep my
logging program running, I need to keep
using Win4K3.

Tom wrote a clever bit of software,
perhaps there is a way to tell it not to
change EQ settings, I'll have to check
that too.

Thanks & 73,

Gary
KA1J






Gary,

Are you using any software to control the K3?
I have just been informed that Win4K3 will often change the EQ
settings.

Remove the USB or RS-232 connection and try it with only the K3, then
set the SSB TX EQ.  Check later to see if it has changed.

73,
Don W3FPR

On 11/2/2018 3:29 PM, Gary Smith wrote:

Hi Don,

No, I set them for SSB and at a later time
the TX EQ is flat and I have to change it
back to the settings to fit my mic. I
don't use AM except to listen to broadcast
stations & listen to the nature of RFI.







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Re: [Elecraft] K3 - TX EQ settings not remembered.

2018-11-02 Thread Gary Smith 
Don,

I'll give your suggestion a try & see how 
that does.

I do use Win4K3, I need it to use WSJT as 
WSJT doesn't like to share ports. I used 
to use LP-Bridge which let me 
simultaneously run all my software 
flawlessly, till WSJT... and I fast 
discovered it would not play nice unless 
WSJT had sole communication with my 
K3/K3s. 

With Win4K3 I can use all the software 
simultaneously including WSJT, logging 
program, N1MM & MMTTY without having to 
shut all the other software down every 
time I want to change modes or software.

If it wasn't for WSJT making this issue, 
it would be simple to just keep doing what 
I was doing with LP-Bridge. As I do use 
MSK144 & some FT8 and want to keep my 
logging program running, I need to keep 
using Win4K3.

Tom wrote a clever bit of software, 
perhaps there is a way to tell it not to 
change EQ settings, I'll have to check 
that too.

Thanks & 73,

Gary
KA1J





> Gary,
> 
> Are you using any software to control the K3?
> I have just been informed that Win4K3 will often change the EQ
> settings.
> 
> Remove the USB or RS-232 connection and try it with only the K3, then
> set the SSB TX EQ.  Check later to see if it has changed.
> 
> 73,
> Don W3FPR
> 
> On 11/2/2018 3:29 PM, Gary Smith wrote:
> > Hi Don,
> > 
> > No, I set them for SSB and at a later time
> > the TX EQ is flat and I have to change it
> > back to the settings to fit my mic. I
> > don't use AM except to listen to broadcast
> > stations & listen to the nature of RFI.
> > 
> 



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Re: [Elecraft] K3 - TX EQ settings not remembered.

2018-11-02 Thread Dennis Moore 
How are you turning off the K3? I seem to recall that some settings 
aren't saved if you turn it off by removing power.


Dennis NJ6G


On 11/2/2018 10:31, Gary Smith wrote:

I seem to have an issue with the K3 memory
settings for the microphone.


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Re: [Elecraft] K3 - TX EQ settings not remembered.

2018-11-02 Thread Don Wilhelm 

Gary,

Are you using any software to control the K3?
I have just been informed that Win4K3 will often change the EQ settings.

Remove the USB or RS-232 connection and try it with only the K3, then 
set the SSB TX EQ.  Check later to see if it has changed.


73,
Don W3FPR

On 11/2/2018 3:29 PM, Gary Smith wrote:

Hi Don,

No, I set them for SSB and at a later time
the TX EQ is flat and I have to change it
back to the settings to fit my mic. I
don't use AM except to listen to broadcast
stations & listen to the nature of RFI.


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Re: [Elecraft] K3 - TX EQ settings not remembered.

2018-11-02 Thread Gary Smith 
Hi Don,

No, I set them for SSB and at a later time 
the TX EQ is flat and I have to change it 
back to the settings to fit my mic. I 
don't use AM except to listen to broadcast 
stations & listen to the nature of RFI. 

It was when in AM I was listening to RFI 
that I thought to check the TX EQ settings 
and found them different than I had made 
them. When I thought to see if they were 
like that in SSB again, I found the values 
there all 0. I then checked different 
bands and none of them had my saved TX EQ 
on SSB.

73,

Gary
KA1J

> Gary,
> 
> The EQ settings are per-mode.
> If you set them for SSB mode and then go to AM mode, you will find
> them set flat.
> 
> Is that possibly the problem?
> 
> 73,
> Don W3FPR
> 
> On 11/2/2018 1:31 PM, Gary Smith wrote:
> > I seem to have an issue with the K3 memory
> > settings for the microphone. I changed the
> > TX EQ to match settings and now when I
> > check, the TX EQ is back to flat again.
> > This has been happening since I set the
> > values. I've had to restore the values I
> > know them by heart and can do it quickly.
> > Still, I don't know when they get lost so
> > I always have to keep checking to be sure
> > they are still active.
> > 
> 



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Re: [Elecraft] K3 - TX EQ settings not remembered.

2018-11-02 Thread Don Wilhelm 

Gary,

The EQ settings are per-mode.
If you set them for SSB mode and then go to AM mode, you will find them 
set flat.


Is that possibly the problem?

73,
Don W3FPR

On 11/2/2018 1:31 PM, Gary Smith wrote:

I seem to have an issue with the K3 memory
settings for the microphone. I changed the
TX EQ to match settings and now when I
check, the TX EQ is back to flat again.
This has been happening since I set the
values. I've had to restore the values I
know them by heart and can do it quickly.
Still, I don't know when they get lost so
I always have to keep checking to be sure
they are still active.


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[Elecraft] FS Phonema KSP3 Elecraft style speker

2018-11-02 Thread Howard Sherer 
Mint condition $130. plus shipping
Howard AE3T
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[Elecraft] K3 - TX EQ settings not remembered.

2018-11-02 Thread Gary Smith 
I seem to have an issue with the K3 memory 
settings for the microphone. I changed the 
TX EQ to match settings and now when I 
check, the TX EQ is back to flat again. 
This has been happening since I set the 
values. I've had to restore the values I 
know them by heart and can do it quickly. 
Still, I don't know when they get lost so 
I always have to keep checking to be sure 
they are still active.

Just now, when I checked the different 
modes I find AM mic settings modified in 
the TX EQ but not with the same values as 
I used. I set the TX EQ for use with SSB 
and the MH4, I only found the AM settings 
were other than "0" when listening to some 
power line RFI on AM & that AM setting was 
still on when I happened to check the TX 
EQ settings. All the other mic settings 
for SSB were back to default 0.

Having had to reset the mic settings 
frequently, last night I made the 
settings, turned off the K3, restarted & 
the settings were still intact. This next 
day, they are now lost again.

To make the settings I enter the main 
config. Tap the needed # to get each 
individual audio band, I use VFO A to 
select the desired value, tap config when 
done to exit and that's all I do. What am 
I missing to save this to the K3's 
non-volatile memory?

Thanks & 73,

Gary
KA1J
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Re: [Elecraft] Fwd: KAT-500 interface cable question

2018-11-02 Thread Ken Winterling 
The LDG IC-PAC-6 tuner cable is plug-n-play with the KAT500 and Icom’s that
support the mating external tuner connector.  It is 6’ long and costs $12
(plus shipping).  This is the same cable that came from my LDG tuner and it
works with my KAT500.

The cable also comes in a 14” version but that might be a rather snug fit
even if the KAT500 is stacked with a KPA500.  You wouldn’t have much room
to move either device to see the rear panels unless you moved the stack as
a unit.

LDG Electronics IC-PAC-6
SKU: ZLD-IC-PAC-6
https://www.gigaparts.com/ldg-electronics-ic-pac-6.html

Ken
WA2LBI

On Fri, Nov 2, 2018 at 12:14 Clint Talmadge  wrote:

> From: 
> Date: Fri, Nov 2, 2018 at 10:54 AM
> Subject: RE: [Elecraft] KAT-500 interface cable question
> To: 
> Cc: Clint Talmadge 
>
>
> Clint,
>
> I looked at that as a possibility, did a cursory look at an MFJ auto-tuner
> schematic, then decided that it was too easy to make one with spare parts
> and heat shrink. I would hate to spend $20 plus shipping - only to have to
> cut off the heat shrink on the MFJ cable, disassemble, do surgery to
> replace the Molex, and put on new heat shrink if I chose poorly.
>
> Using the home brew cable, my 7300 and 7100 both work well with the KAT500
> which I use with a KPA500. Next projects will be to make a patching switch
> to pop between the two for when I do simplex DV on HF.
>
> I have not tried to use my KX3 with the KPA/KAT500 combo, but assume it
> would be easy.
>
> KD4IZ
> Jack Spitznagel
> FM19oo
>
>
>
> Jack - etal - I checked my parts and did not have the 4 Pin Molex needed,
> or the 2.1mm power plug. In looking for the Molex connector I found the
> cable which is exactly what is needed. The connectors and the wiring are as
> specified in the manual. When I first looked into it I thought the sleeve
> of the 3.5mm Stereo plug was left open but it was pointed out to me that it
> is in fact also ties to pin 4 of the Moles which is ground.
>
> You are very correct about the $20 plus shipping but I figured I would have
> to order the other two connectors and pay shipping on them also. One of the
> joys of living "out in the woods" is being able to string wires and install
> towers any where you want, but when you need a part you get to pay
> shipping.
>
-- 

Ken
WA2LBI

Sent from one of my mobile devices
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[Elecraft] KAT-500 interface cable question

2018-11-02 Thread kd4iz 
Clint,

I looked at that as a possibility, did a cursory look at an MFJ auto-tuner 
schematic, then decided that it was too easy to make one with spare parts and 
heat shrink. I would hate to spend $20 plus shipping - only to have to cut off 
the heat shrink on the MFJ cable, disassemble, do surgery to replace the Molex, 
and put on new heat shrink if I chose poorly.

Using the home brew cable, my 7300 and 7100 both work well with the KAT500 
which I use with a KPA500. Next projects will be to make a patching switch to 
pop between the two for when I do simplex DV on HF.

I have not tried to use my KX3 with the KPA/KAT500 combo, but assume it would 
be easy.

KD4IZ
Jack Spitznagel
FM19oo



-Original Message-
From: Don Wilhelm 
Sent: Friday, November 2, 2018 11:11
To: Clint Talmadge ; elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT-500 interface cable question

The wiring for the Icom AH4 Interface is detailed on page 8 of the
KAT500 manual.  Pin 4 of the Molex connector is connected to the shield
(shell) of the T-R-S plug.

I don't know how the MFJ cable is wired.

BTW - there are no hyphens in Elecraft product designations, so it is the 
"KAT500" and not the "KAT-500".

73,
Don W3FPR

On 11/2/2018 10:45 AM, Clint Talmadge wrote:
> New guy here with a question. I am about to get a KAT-500 to mate to 
> my IC-7300. In searching for the Molex connector I need to make an 
> interface cable for the radio to the tuner, I came across the 
> MFJ-5124I cable which MFJ sells to mate their 99* series auto-tuners 
> to Icom radios. The connectors on the tuner end are the same as used 
> on the KAT-500. The wiring is the same with one addition. Where there 
> is no ground connection from the sleeve of the 3.5MM stereo plug 
> specified in the KAT-500 manual, the MFJ cable has the sleeve connected to 
> the ground pin of the Icom connector.
> Seeing the that the sleeve of the 3.5mm stereo connector on the
> KAT-500 is chassis grounded anyway I think I can use the MFJ cable to 
> interface my
> KAT-500 to my IC-7300.  Does anyone see the flaw in my thinking? 
> (about the cable, not the radio) de W5CPT



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[Elecraft] Fwd: KAT-500 interface cable question

2018-11-02 Thread Clint Talmadge 
From: 
Date: Fri, Nov 2, 2018 at 10:54 AM
Subject: RE: [Elecraft] KAT-500 interface cable question
To: 
Cc: Clint Talmadge 


Clint,

I looked at that as a possibility, did a cursory look at an MFJ auto-tuner
schematic, then decided that it was too easy to make one with spare parts
and heat shrink. I would hate to spend $20 plus shipping - only to have to
cut off the heat shrink on the MFJ cable, disassemble, do surgery to
replace the Molex, and put on new heat shrink if I chose poorly.

Using the home brew cable, my 7300 and 7100 both work well with the KAT500
which I use with a KPA500. Next projects will be to make a patching switch
to pop between the two for when I do simplex DV on HF.

I have not tried to use my KX3 with the KPA/KAT500 combo, but assume it
would be easy.

KD4IZ
Jack Spitznagel
FM19oo



Jack - etal - I checked my parts and did not have the 4 Pin Molex needed,
or the 2.1mm power plug. In looking for the Molex connector I found the
cable which is exactly what is needed. The connectors and the wiring are as
specified in the manual. When I first looked into it I thought the sleeve
of the 3.5mm Stereo plug was left open but it was pointed out to me that it
is in fact also ties to pin 4 of the Moles which is ground.

You are very correct about the $20 plus shipping but I figured I would have
to order the other two connectors and pay shipping on them also. One of the
joys of living "out in the woods" is being able to string wires and install
towers any where you want, but when you need a part you get to pay
shipping.
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[Elecraft] KAT500 FCCS and FCMD

2018-11-02 Thread ANDY DURBIN 
I'd like to hear from who has successfully tailored KAT500 serial interface 
commands FCCS and FCMD  to overcome a frequency stability issue.   I cannot 
reconcile the results of my experiments with the command descriptions.


Yes,  I have a request in with support but the relevant specialist is not 
available.


Thanks and 73,

Andy k3wyc
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Re: [Elecraft] KAT-500 interface cable question

2018-11-02 Thread Clint Talmadge 
On Fri, Nov 2, 2018 at 10:10 AM Don Wilhelm  wrote:

> The wiring for the Icom AH4 Interface is detailed on page 8 of the
> KAT500 manual.  Pin 4 of the Molex connector is connected to the shield
> (shell) of the T-R-S plug.
>
> I don't know how the MFJ cable is wired.
>
> BTW - there are no hyphens in Elecraft product designations, so it is
> the "KAT500" and not the "KAT-500".
>
> 73,
> Don W3FPR
>

You are correct sir. The MFJ cable is wired exactly as the table in the
KAT500 manual.
And mea culpa on the dash in the desiginator. I won't do that again.
Thank you,
p.s. I ordered my KAT500 this morning. The next item on my "gonna get" list
is the KPA500.
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Re: [Elecraft] OT: Dry air static

2018-11-02 Thread Gary Smith 
8-9 years back I made a beverage system, 
it went over a marsh. One beverage was 
800+' long & the other around 500', I had 
the proper lengths at the time. I ran PVC 
piping with a "T" at the top to run the 
wire through to keep deer from hitting it 
and to keep it off the Phragmites (swamp 
reeds) below.

It was the worst antenna I have ever tried 
to listen on. The dry reeds below rustling 
in the wind caused so much static that the 
noise level from it was more than all but 
a handful of local signals. Took me weeks 
to install and fight through the jungle of 
reeds and I ended up taking them down 
after a couple weeks of frustration. I 
worked no DX with those Beverages. Sans 
static from the reeds, they would have 
been awesome.

73,

Gary
KA1J

 
> Snow static as well during blizzards do wonders to light up a neon
> bulb. I used to put one between my long-wire and ground, even wind
> when it would get a good swing would do the same thing
> 
> Fred
> VE3FAL
> 
> Sent from my iPhone
> Fred VE3FAL/CIW649
> 
> 
> > On Oct 31, 2018, at 19:13, Rose  wrote:
> > 
> > Fred,
> > 
> > I recall the output capacitor of the pi-net capacitor in my HT-17
> > rythmatically snapping in response to the charged particles of dust
> > in the dry Oklahoma air building up on the long wire antenna. (;-)
> > 
> > 73 !
> > 
> > K0PP
> > kengk...@gmail.com
> > 
> >> On Wed, Oct 31, 2018, 16:42 Fred Jensen  >> 
> >> Hmmm ... There seem to be different flavors of static.  My
> >> reference was to what is often called "precipitation static" [rain,
> >> snow, maybe hail] and which can sometimes also be caused by wind
> >> blowing sand/dust past the antenna.  It sounds like bacon frying in
> >> the receiver.  Each drop or snowflake acquires a minuscule charge
> >> falling or blowing which discharges into the antenna on contact. 
> >> The typical semiconductor devices in radio front ends these days
> >> exhibit a nearly infinite impedance to "ground" and a tiny
> >> capacitance.  The constant little pulses from the static charge
> >> that capacitance with essentially no discharge path.  That's what
> >> fried the 1st 760 II and then, predictably, the second one.
> >> 
> >> There is also the combined "static" caused by distant
> >> thunderstorms.
> >> 
> >> INT QRN: "Are you troubled by static"
> >> QRN: "I am troubled by static"
> >> 
> >> which is different than "static" caused by corona or leakage on a
> >> high voltage power transmission line.
> >> 
> >> 73,
> >> 
> >> Fred ["Skip"] K6DGW
> >> Sparks NV DM09dn
> >> Washoe County
> >> 
> >> PS:  For those about to tell me "nearly infinite" is a meaningless
> >> term, save the BW.  I know, I hold a math degree.  Just using a
> >> little editorial license.
> >> 
> >>> On 10/31/2018 3:10 PM, ab2tc wrote:
> >>> Hi,
> >>> 
> >>> It's a dead short circuit for DC and low frequencies thanks to the
> >>> SWR bridge (it has a voltage transformer directly across the
> >>> antenna
> >> terminals).
> >>> There seems to be different opinions on what is meant by "static".
> >>> To me
> >> it
> >>> means a slowly varying DC voltage caused by static buildup in the
> >>> clouds during or before thunderstorms. The K3(S) is perfectly
> >>> protected against these. Some people include the transients that
> >>> are caused by actual lightning strikes nearby in the definition of
> >>> "static". The K3(S) is not protected against these as they have
> >>> very strong high frequency content.
> >> For
> >>> these extra protection is needed as discussed several places in
> >>> this
> >> thread.
> >>> I have a number of Alpha-Delta switches in my antenna system and
> >>> they
> >> have
> >>> gas discharge tubes, but frankly I have no idea how effective they
> >>> are.
> >>> 
> >>> AB2TC - Knut
> >>> 
> >>> 
> >>> wayne burdick wrote
> > On Oct 30, 2018, at 12:50 PM, Fred Jensen 
>  k6dgw@
>   wrote:
> > Does my K3 have a static bleed across the antenna terminal(s)?
>  Yes.
>  
>  Wayne
>  N6KR

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Re: [Elecraft] KAT-500 interface cable question

2018-11-02 Thread Don Wilhelm 
The wiring for the Icom AH4 Interface is detailed on page 8 of the 
KAT500 manual.  Pin 4 of the Molex connector is connected to the shield 
(shell) of the T-R-S plug.


I don't know how the MFJ cable is wired.

BTW - there are no hyphens in Elecraft product designations, so it is 
the "KAT500" and not the "KAT-500".


73,
Don W3FPR

On 11/2/2018 10:45 AM, Clint Talmadge wrote:

New guy here with a question. I am about to get a KAT-500 to mate to my
IC-7300. In searching for the Molex connector I need to make an interface
cable for the radio to the tuner, I came across the MFJ-5124I cable which
MFJ sells to mate their 99* series auto-tuners to Icom radios. The
connectors on the tuner end are the same as used on the KAT-500. The wiring
is the same with one addition. Where there is no ground connection from the
sleeve of the 3.5MM stereo plug specified in the KAT-500 manual, the MFJ
cable has the sleeve connected to the ground pin of the Icom connector.
Seeing the that the sleeve of the 3.5mm stereo connector on the KAT-500 is
chassis grounded anyway I think I can use the MFJ cable to interface my
KAT-500 to my IC-7300.  Does anyone see the flaw in my thinking? (about the
cable, not the radio) de W5CPT

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Re: [Elecraft] xv144 Q3 ATF34143 replacement

2018-11-02 Thread Michael Walker 
Thanks Don

I was hoping to find something I can order from DigiKey only due to the
minimum shipping costs from the US into Canada and high-ish.  Digi-Key
ships from within Canada for about $6 with overnight shipping.

I assume that you have a stock pile of these?  :)

Mike va3mw


On Fri, Nov 2, 2018 at 11:01 AM Don Wilhelm  wrote:

> Michael,
>
> Yes, DigiKey no longer has stock.  It is an obsolete part.
> Try Elecraft, p/n E580020 - PHEMT, ATF34143.  They should have some in
> stock.
>
> The XV manuals are on the new Elecraft website.  Hover your mouse over
> the Support tab and click on Manuals.  Then open the Radio Accessory
> Manuals and you will find the XV manuals there.
> The parts list is in the Assembly manual.
>
> 73,
> Don W3FPR
>
> On 11/2/2018 10:32 AM, Michael Walker wrote:
> > All
> >
> > It looks like my Q3 ATF34143 has blown and needs to be replaced.
> >
> > However, it doesn't seem to be available anywhere that I can find.
> >
> > Is there a replacement that can be recommended?
> >
> > BTW, I went to check the latest XV144 manual and that page could not be
> > found from the website.
>
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Re: [Elecraft] xv144 Q3 ATF34143 replacement

2018-11-02 Thread Don Wilhelm 

Michael,

Yes, DigiKey no longer has stock.  It is an obsolete part.
Try Elecraft, p/n E580020 - PHEMT, ATF34143.  They should have some in 
stock.


The XV manuals are on the new Elecraft website.  Hover your mouse over 
the Support tab and click on Manuals.  Then open the Radio Accessory 
Manuals and you will find the XV manuals there.

The parts list is in the Assembly manual.

73,
Don W3FPR

On 11/2/2018 10:32 AM, Michael Walker wrote:

All

It looks like my Q3 ATF34143 has blown and needs to be replaced.

However, it doesn't seem to be available anywhere that I can find.

Is there a replacement that can be recommended?

BTW, I went to check the latest XV144 manual and that page could not be
found from the website.

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[Elecraft] KAT-500 interface cable question

2018-11-02 Thread Clint Talmadge 
New guy here with a question. I am about to get a KAT-500 to mate to my
IC-7300. In searching for the Molex connector I need to make an interface
cable for the radio to the tuner, I came across the MFJ-5124I cable which
MFJ sells to mate their 99* series auto-tuners to Icom radios. The
connectors on the tuner end are the same as used on the KAT-500. The wiring
is the same with one addition. Where there is no ground connection from the
sleeve of the 3.5MM stereo plug specified in the KAT-500 manual, the MFJ
cable has the sleeve connected to the ground pin of the Icom connector.
Seeing the that the sleeve of the 3.5mm stereo connector on the KAT-500 is
chassis grounded anyway I think I can use the MFJ cable to interface my
KAT-500 to my IC-7300.  Does anyone see the flaw in my thinking? (about the
cable, not the radio) de W5CPT
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[Elecraft] xv144 Q3 ATF34143 replacement

2018-11-02 Thread Michael Walker 
All

It looks like my Q3 ATF34143 has blown and needs to be replaced.

However, it doesn't seem to be available anywhere that I can find.

Is there a replacement that can be recommended?

BTW, I went to check the latest XV144 manual and that page could not be
found from the website.

many thanks, Mike va3mw
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Re: [Elecraft] Avoiding costly lightning damage to your radios gear

2018-11-02 Thread Gary Smith 
Apologies if this has been suggested 
already, I've got too many irons in the 
fire and might have missed/forgotten if 
this was earlier said; I no longer use a 
wired router, all my computers are 
wireless so there is no physical ethernet 
connection to any computer. 

I use the Netgear A6210 USB wireless Rx/Tx 
dongle and it is fast, very fast. Ethernet 
directly connected I get 300 Mbps download 
from the cable. With the Netgear dongle, I 
also get 300 Mbps. I lose nothing and 
eliminate that lightning path.

As to the cable itself coming to the 
house, I have replaced the cable company's 
grounded F81 Barrel Connector between the 
drop line and the house with a 75 ohm 
grounded surge protector bought at 
DXEngineering, I use them on my two HI-Z 
RX arrays as well.

After taking a hit to my just out of 
warranty, McIntosh tube preamp's USB this 
year, (forcing me to either pay big $ in 
repair or go with Toslink, I chose the 
glass toslink. (For audio only, the 
Toslink is excellent but with this system 
Toslink only offers one way communication 
from the computer to the preamp and some 
home entertainment utilizes two way 
communication). Fortunately, my needs 
don't require this.

Those 75 ohm cable lines must be 
protected, just like our communications 
coax.

73,

Gary
KA1J


> very good suggestions Wayne. I work in the Communications field and
> have for 40 years. I have seen massive amounts of lightning damage,
> regardless of grounding , protection, etc etc. If you take a direct
> hit.. something is going to fry and that´s it.
> 
> I unplug antennas, power cords AND Ethernet Cables to all computers in
> my ham shack. I must confess however, I have not disconnected the USB
> and RS232 lines. I sort of figure if the power cord and ethernet
> cables to my computer are disconnected, the path for the power surge
> is eliminated. BUT.. guess it would be better to be sure. And btw, yes
> my computers are all grounded very well.
> 
> thanks for the heads up
> 
> Ronnie W5SUM
> 
> 
> -Original Message- 
> From: Wayne Burdick
> Sent: Monday, October 29, 2018 10:08 PM
> To: Elecraft Reflector
> Cc: k...@yahoogroups.com
> Subject: [Elecraft] Avoiding costly lightning damage to your radios
> gear
> 
> Every year, especially in summer, our techs see radios come in that
> have been damaged by lightning, despite the radio's protective
> circuitry. You can take steps to reduce your own risk.
> 
> 1. Many of us remember to disconnect antennas when lightning is
> anticipated. But in our experience, the most common source of damage,
> by far, is from an attached computer. Computers themselves often fail
> due to lightning strikes. They can also act as conduits for surges to
> other gear. Just to emphasize this point: Customers often say "I
> disconnected everything but the USB cable to the computer...," which
> left the interface to their radio exposed.
> 
> Note: Only in rare cases have we seen surge damage via other I/O ports
> (accessory jack, paddle/keyer jacks, PTT IN, KEY OUT, and DC). USB and
> RS232 ports are the most susceptible.
> 
> 2. Some stations have an ad-hoc ground system and little or no ESD or
> surge protection. If you haven't already taken protective measures, we
> strongly recommend reading this article, which goes into some detail
> regarding how lightning finds its way in:
> 
>http://www.arrl.org/files/file/QST/This%20Month%20in%20QST/June2017
>/Chusid-Morgan.pdf
> 
> At the very least, be sure your PC and other gear share a short,
> heavy, common ground.
> 
> 3. As for protecting your PC, here's a good starting point:
> 
> https://www.wikihow.com/Protect-a-PC-in-a-Thunderstorm
> 
> 73,
> Wayne
> N6KR
> 
> 
> 
> 
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[Elecraft] K3 FT8 Problem VP6D

2018-11-02 Thread John Harper 
They operated VP6D/MM on the way to Ducie and may do the same as they
leave, if they're not too burnt out.

John AE5X
https://ae5x.blogspot.com

>Well, that will make it a tad more difficult to work them! :-)
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