Re: [Elecraft] XV50 Rev B - Questions

[Don Wilhelm]

Brian,

In later XV transverters, JP9 controls when the crystal oven is powered.
Since you do not have JP9, even if you have a crystal oven, it will 
still work fine.
The oven will be powered when the XV50 is powered.  Just allow some time 
for it to warm up (about 20 minutes).
Actually, the 22MHz crystal does not drift much and usually does not 
require the oven.


73 and Happy Thanksgiving,
Don W3FPR

On 11/24/2021 12:20 PM, Brian Moore via Elecraft wrote:
Hello - I recently purchased an XV50 to use with my K2. While setting 
it up for a K2 with no K60XV per the manual, I noticed that there is 
no JP9, where I am supposed to short pins 1-2. On closer inspection, 
my XV50 has a rev B board and it appears these pins don't exist. The 
assembly manual I found online is for a Rev E board and owners manual 
is for Rev F1.


I'm assuming all the other jumper settings from the Rev E manual are 
correct for my Rev B XV50, but I thought I'd ask here for 
clarification before I damage my XV50, since it's almost irreplaceable 
now days. Also a Christmas wish would be to purchase a K60XV if anyone 
has one laying around that they'd be willing to sell.


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Re: [Elecraft] [K2] Cheap power supply for KBT2

[Louandzip via Elecraft]

Although you can certainly use it just for charging an SLA, one advantage of 
these types of chargers is they automatically go into float mode to maintain 
the charge and prolong the life of the battery.  This is particularly 
beneficial for batteries that go fairly long periods of disuse, like 
motorcycles in the winter, or snow thrower batteries in the summer, etc.
I don't doubt that they can put out RFI, but in chasing down RFI at my QTH, 
which included switching off the power to the entire home, the ones I use 
(Battery Tender brand) were never identified as causing me any problems. Of 
course YMMV. 
   On Wednesday, November 24, 2021, 01:36:53 PM MST, Chris  
wrote:  
 
 Hi Jim,

Excellent article.  I haven't checked if it is a source of noise, but it
doesn't quite matter because this is a charger, not a power supply.  I only
use it when I need to charge a battery, so it is OK.

Best 73,

Chris KM1B


On Wed, Nov 24, 2021 at 2:03 PM Jim Brown  wrote:

> On 11/24/2021 6:29 AM, Chris wrote:
> > I use this, and it seems to be working very well.
>
> Have you checked it for noise, using techniques in this app note?
> http://k9yc.com/KillingReceiveNoise.pdf
>
> Most hams have so much receive noise that they can't hear. If you
> haven't gone through your home to get rid of your own noise sources,
> chances are you're one of them.
>
> 73, Jim K9YC
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Re: [Elecraft] [K2] Cheap power supply for KBT2

[Chris]

Hi Jim,

Excellent article.  I haven't checked if it is a source of noise, but it
doesn't quite matter because this is a charger, not a power supply.  I only
use it when I need to charge a battery, so it is OK.

Best 73,

Chris KM1B


On Wed, Nov 24, 2021 at 2:03 PM Jim Brown  wrote:

> On 11/24/2021 6:29 AM, Chris wrote:
> > I use this, and it seems to be working very well.
>
> Have you checked it for noise, using techniques in this app note?
> http://k9yc.com/KillingReceiveNoise.pdf
>
> Most hams have so much receive noise that they can't hear. If you
> haven't gone through your home to get rid of your own noise sources,
> chances are you're one of them.
>
> 73, Jim K9YC
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Re: [Elecraft] [K2] Cheap power supply for KBT2

[D Remy]

Excellent article Jim!  Thank you so much!

David, NS4V


David R. Hourdequin, PE
Specialty Heavy Timber Engineer
Hayesville, NC 28904
828-421-6216

> On Nov 24, 2021, at 14:03, Jim Brown  wrote:
> 
> On 11/24/2021 6:29 AM, Chris wrote:
>> I use this, and it seems to be working very well.
> 
> Have you checked it for noise, using techniques in this app note?
> http://k9yc.com/KillingReceiveNoise.pdf
> 
> Most hams have so much receive noise that they can't hear. If you haven't 
> gone through your home to get rid of your own noise sources, chances are 
> you're one of them.
> 
> 73, Jim K9YC
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Re: [Elecraft] [K2] Cheap power supply for KBT2

[Jim Brown]

On 11/24/2021 6:29 AM, Chris wrote:

I use this, and it seems to be working very well.


Have you checked it for noise, using techniques in this app note?
http://k9yc.com/KillingReceiveNoise.pdf

Most hams have so much receive noise that they can't hear. If you 
haven't gone through your home to get rid of your own noise sources, 
chances are you're one of them.


73, Jim K9YC
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Re: [Elecraft] [K2] Cheap power supply for KBT2

[Jim Brown]

On 11/24/2021 5:07 AM, Louandzip via Elecraft wrote:

I've never evaluated these for RFI, but I've never had an RFI prob that I 
traced to the charger, which is in the garage.


I'd bet you would if you tried.

73, Jim K9YC
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Re: [Elecraft] Background Noise with Mike Plugged in to Rear, Mike Jack

[David Herring]

Correction:  “bonded and grounded” not “bounded and grounded.”  Sorry for 
typo…. ;-)

73,
Dave - N5DCH




> On Nov 24, 2021, at 11:49 AM, David Herring  wrote:
> 
> I don’t disagree with K4TAX.  It’s up to the operator to work out RFI at 
> one’s station.
> 
> But for the sake of clarity to those that may read this thread later…
> 
> The rigs in question in this part of the thread are the K4.
> 
> Every component of my station is bounded and grounded per K9YC’s 
> publications. My antennas are effectively common mode choked both at the feed 
> point and at the entry point to the shack (the latter demonstrably reduces 
> received noise at my noisy QTH).
> 
> I am unaffected by RF at the operating position in the sense that I don’t get 
> burned and none of my peripherals (such as a PC and monitors, for example) 
> display any evidence of RF at all. The only issue here is what appears to be 
> RF feedback getting into the audio when using a CM-500 plugged into the rear 
> panel mic jack and, as I discovered later, a D-104 plugged into the front 
> jack. Neither mic is shielded and neither uses twisted-pairs in their cables, 
> so it is possible that at least some of the problem lies not with the station 
> but the mics themselves.  Quite interestingly, another mic didn’t exhibit the 
> problem here at this same station.
> 
> So is there RF at my operating position?  Well to state the obvious, I guess 
> there must be at least a little or else this would not happen.  But until I 
> find where it’s coming from, a "band-aid” (common mode choke) is an 
> appropriate way to continue safe operation.  This band-aid may also be 
> appropriate to augment components that can’t readily be fixed otherwise.
> 
> My comment about Elecraft looking at the radio for RFI issues was solely in 
> response to another post in this thread where it was stated that Elecraft was 
> ALREADY looking into the rear panel mic jack for RFI, which made me wonder if 
> there was a known problem. IF that is true, then maybe looking at the front 
> panel jack may be advisable. Otherwise I agree it’s not up to Elecraft to 
> work out RFI issues at an individual’s station.
> 
> 73,
> Dave - N5DCH
> 
> 
> 
> 
>> On Nov 24, 2021, at 8:11 AM, Bob McGraw > > wrote:
>> 
>> Running my K3S, KPA500 and working 160M - 6M at 500 watts, using either a 
>> mike into the front of the radio, or my headset into the back, I experience 
>> NO RFI issues.  I don't have any toroids on any cables either.   I also run 
>> digital modes with a single USB cable between the computer and the radio.  
>> All of these inputs/output stay connected all of the time.
>> 
>> As to using toroids, refer to the work that Jim, K9YC has written and 
>> published.   If you experience RFI and use toroids to resolve the issue, you 
>> have only put a band-aid on the wound.   I suggest looking at the antenna 
>> system, feed line system, and bonding of equipment cabinets to reduce RF at 
>> the operating position.
>> 
>> I don't see this as a need for Elecraft to look at the radio for RFI issues. 
>>  To many hams use the K3 series successfully without RFI issues.
>> 
>> 73
>> 
>> Bob, K4TAX
>> 
>> 
>> On 11/23/2021 9:28 PM, elecraft-requ...@mailman.qth.net 
>>  wrote:
>>> I also had RF problems with the CM-500 plugged into the rear mic jack.  The 
>>> solution I?ve implemented so far was to wrap about 13 turns of the CM-500?s 
>>> cord around a #31 toroid. It both shortened the cord which was way too long 
>>> for my shack and eliminated the RF problem. A two-for-one solution.;-)
>>> 
>>> On rare occasions I like to use my D-104 mic in the front panel jack.  It 
>>> too is adversely affected with RF issues.  As soon as I get a moment I?m 
>>> going to try wrapping it?s cord around a #31 toroid and hope it works as 
>>> well there as with the CM-500.
>>> 
>>> I hope Elecraft is looking at the front panel mic jack as well as the rear 
>>> when looking at solving the RF issue.
>> 
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Message 

Re: [Elecraft] Background Noise with Mike Plugged in to Rear, Mike Jack

[David Herring]

I don’t disagree with K4TAX.  It’s up to the operator to work out RFI at one’s 
station.

But for the sake of clarity to those that may read this thread later…

The rigs in question in this part of the thread are the K4.

Every component of my station is bounded and grounded per K9YC’s publications. 
My antennas are effectively common mode choked both at the feed point and at 
the entry point to the shack (the latter demonstrably reduces received noise at 
my noisy QTH).

I am unaffected by RF at the operating position in the sense that I don’t get 
burned and none of my peripherals (such as a PC and monitors, for example) 
display any evidence of RF at all. The only issue here is what appears to be RF 
feedback getting into the audio when using a CM-500 plugged into the rear panel 
mic jack and, as I discovered later, a D-104 plugged into the front jack. 
Neither mic is shielded and neither uses twisted-pairs in their cables, so it 
is possible that at least some of the problem lies not with the station but the 
mics themselves.  Quite interestingly, another mic didn’t exhibit the problem 
here at this same station.

So is there RF at my operating position?  Well to state the obvious, I guess 
there must be at least a little or else this would not happen.  But until I 
find where it’s coming from, a "band-aid” (common mode choke) is an appropriate 
way to continue safe operation.  This band-aid may also be appropriate to 
augment components that can’t readily be fixed otherwise.

My comment about Elecraft looking at the radio for RFI issues was solely in 
response to another post in this thread where it was stated that Elecraft was 
ALREADY looking into the rear panel mic jack for RFI, which made me wonder if 
there was a known problem. IF that is true, then maybe looking at the front 
panel jack may be advisable. Otherwise I agree it’s not up to Elecraft to work 
out RFI issues at an individual’s station.

73,
Dave - N5DCH




> On Nov 24, 2021, at 8:11 AM, Bob McGraw  wrote:
> 
> Running my K3S, KPA500 and working 160M - 6M at 500 watts, using either a 
> mike into the front of the radio, or my headset into the back, I experience 
> NO RFI issues.  I don't have any toroids on any cables either.   I also run 
> digital modes with a single USB cable between the computer and the radio.  
> All of these inputs/output stay connected all of the time.
> 
> As to using toroids, refer to the work that Jim, K9YC has written and 
> published.   If you experience RFI and use toroids to resolve the issue, you 
> have only put a band-aid on the wound.   I suggest looking at the antenna 
> system, feed line system, and bonding of equipment cabinets to reduce RF at 
> the operating position.
> 
> I don't see this as a need for Elecraft to look at the radio for RFI issues.  
> To many hams use the K3 series successfully without RFI issues.
> 
> 73
> 
> Bob, K4TAX
> 
> 
> On 11/23/2021 9:28 PM, elecraft-requ...@mailman.qth.net wrote:
>> I also had RF problems with the CM-500 plugged into the rear mic jack.  The 
>> solution I?ve implemented so far was to wrap about 13 turns of the CM-500?s 
>> cord around a #31 toroid. It both shortened the cord which was way too long 
>> for my shack and eliminated the RF problem. A two-for-one solution.;-)
>> 
>> On rare occasions I like to use my D-104 mic in the front panel jack.  It 
>> too is adversely affected with RF issues.  As soon as I get a moment I?m 
>> going to try wrapping it?s cord around a #31 toroid and hope it works as 
>> well there as with the CM-500.
>> 
>> I hope Elecraft is looking at the front panel mic jack as well as the rear 
>> when looking at solving the RF issue.
> 
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[Elecraft] XV50 Rev B - Questions

[Brian Moore via Elecraft]

Hello - I recently purchased an XV50 to use with my K2. While setting it 
up for a K2 with no K60XV per the manual, I noticed that there is no 
JP9, where I am supposed to short pins 1-2. On closer inspection, my 
XV50 has a rev B board and it appears these pins don't exist. The 
assembly manual I found online is for a Rev E board and owners manual is 
for Rev F1.


I'm assuming all the other jumper settings from the Rev E manual are 
correct for my Rev B XV50, but I thought I'd ask here for clarification 
before I damage my XV50, since it's almost irreplaceable now days. Also 
a Christmas wish would be to purchase a K60XV if anyone has one laying 
around that they'd be willing to sell.


Thanks, 73,

Brian - KM6ZX

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[Elecraft] KX3 Setup For Sale

[Dave Agsten]

Elecraft KX3 Setup w/Amp/Panadaptor - Fairly complete KX3 setup. Elecraft has 
the KX3 on backorder for 4 to 6 weeks as it stands right now. This setup 
includes the KX3 with internal ATU, filters and NiMH charger/realtime clock. 
MH3 Mic (No paddles) Also includes PX3 panadaptor and the KXPA 100 watt amp 
with automatic tuner and all connecting cables. This system has had very little 
use as I have not been real active lately. The kit list price for this is 
$4300. I will sell it for $3450, shipped and insured to any USA address. I can 
take PayPal or credit cards through PayPal. Please respond only via e-mail here 
on QTH. Pictures available and will post soon. Tnx es 73, Dave N8AG
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Re: [Elecraft] P3: Is ther a way to move macros from one P3 to another P3?

[Carl]

Dave,

Also the K3 memory editor can read the memories and send them to a K3.

https://elecraft.com/pages/elecraft-frequency-memory-editor-software

Carl

AB1DD


On 11/24/2021 10:56 AM, Carl wrote:

Have you tried this:

https://dl2rum.de/RUMlogNG/docs/en/pages/CAT-KX3.html

Might work?

On 11/24/2021 10:52 AM, Dave wrote:

Hi,

I have 50 macros programmed into one P3, and want to move them to a 
different P3.


Does anyone know of a way to move the macros programmed into one P3, 
to a different P3, not by simply retyping them into the new P3?



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Re: [Elecraft] P3: Is ther a way to move macros from one P3 to another P3?

[Dave]

Carl,

I must be blind, am I missing a download link for this software?  I 
don't see one on that page...


73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 11/24/21 07:56, Carl wrote:

Have you tried this:

https://dl2rum.de/RUMlogNG/docs/en/pages/CAT-KX3.html

Might work?

On 11/24/2021 10:52 AM, Dave wrote:

Hi,

I have 50 macros programmed into one P3, and want to move them to a 
different P3.


Does anyone know of a way to move the macros programmed into one P3, 
to a different P3, not by simply retyping them into the new P3?



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Re: [Elecraft] P3: Is ther a way to move macros from one P3 to another P3?

[Dave]

Thank you Carl, I will look at that software...

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 11/24/21 07:56, Carl wrote:

Have you tried this:

https://dl2rum.de/RUMlogNG/docs/en/pages/CAT-KX3.html

Might work?

On 11/24/2021 10:52 AM, Dave wrote:

Hi,

I have 50 macros programmed into one P3, and want to move them to a 
different P3.


Does anyone know of a way to move the macros programmed into one P3, 
to a different P3, not by simply retyping them into the new P3?



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Re: [Elecraft] P3: Is ther a way to move macros from one P3 to another P3?

[Carl]

Have you tried this:

https://dl2rum.de/RUMlogNG/docs/en/pages/CAT-KX3.html

Might work?

On 11/24/2021 10:52 AM, Dave wrote:

Hi,

I have 50 macros programmed into one P3, and want to move them to a 
different P3.


Does anyone know of a way to move the macros programmed into one P3, 
to a different P3, not by simply retyping them into the new P3?



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[Elecraft] P3: Is ther a way to move macros from one P3 to another P3?

[Dave]

Hi,

I have 50 macros programmed into one P3, and want to move them to a 
different P3.


Does anyone know of a way to move the macros programmed into one P3, to 
a different P3, not by simply retyping them into the new P3?


--
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
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[Elecraft] Background Noise with Mike Plugged in to Rear, Mike Jack

[Bob McGraw]

Running my K3S, KPA500 and working 160M - 6M at 500 watts, using either 
a mike into the front of the radio, or my headset into the back, I 
experience NO RFI issues.  I don't have any toroids on any cables 
either.   I also run digital modes with a single USB cable between the 
computer and the radio.  All of these inputs/output stay connected all 
of the time.


As to using toroids, refer to the work that Jim, K9YC has written and 
published.   If you experience RFI and use toroids to resolve the issue, 
you have only put a band-aid on the wound.   I suggest looking at the 
antenna system, feed line system, and bonding of equipment cabinets to 
reduce RF at the operating position.


I don't see this as a need for Elecraft to look at the radio for RFI 
issues.  To many hams use the K3 series successfully without RFI issues.


73

Bob, K4TAX


On 11/23/2021 9:28 PM, elecraft-requ...@mailman.qth.net wrote:

I also had RF problems with the CM-500 plugged into the rear mic jack.  The 
solution I?ve implemented so far was to wrap about 13 turns of the CM-500?s 
cord around a #31 toroid. It both shortened the cord which was way too long for 
my shack and eliminated the RF problem. A two-for-one solution.;-)

On rare occasions I like to use my D-104 mic in the front panel jack.  It too 
is adversely affected with RF issues.  As soon as I get a moment I?m going to 
try wrapping it?s cord around a #31 toroid and hope it works as well there as 
with the CM-500.

I hope Elecraft is looking at the front panel mic jack as well as the rear when 
looking at solving the RF issue.


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Re: [Elecraft] [K2] Cheap power supply for KBT2

[Chris]

Hi Doug,

I use this, and it seems to be working very well.  When you order, make
sure you specify a 14.8V (or 14.6V) model.

Some reviews complain that the voltage measurement is only 12V, but mine
clearly shows 14.8V on my Fluke meter.

https://www.amazon.com/D1761-Sealed-Charger-Dual-Stage-Terminals/dp/B001G8DVS8/ref=sr_1_2?keywords=UPG%2BD1761%2BSealed%2BLead%2BAcid%2BCharger=1637762614=133-0654908-3443739=8-2=B001G8DVS8%2CB07F8WM7WZ%2CB07Z41QY5F%2CB01822CSA2%2CB073Z73TB5%2CB091P4FH3H%2CB071FKXHTR%2CB07W46BX31%2CB00GLUP1UC%2CB08RY4GS4D%2CB08XJLYSXJ%2CB08R9VGGJH%2CB081YP9Y3K%2CB07CZ7KWP3%2CB00CV6HZSG%2CB089SV4W5H%2CB085CD1F5V%2CB082VQJQJP%2CB07B4V3HC4%2CB075YN8XLP=1

Chris KM1B


On Tue, Nov 23, 2021 at 9:47 PM Douglas Hagerman via Elecraft <
elecraft@mailman.qth.net> wrote:

> Looking for ideas for a cheap 14 volt wall wart type power supply for
> recharging the KBT2 battery. Is there one available that has the right
> plug? I see lots of 12 volt and 14.4 volt chargers out there, but???
>
> Thanks, Doug, W0UHU.
>
>
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Re: [Elecraft] K2 advice needed - what to buy

[David Woolley]

With such an out of balance antenna, the case, power supply and leads of 
the transmitter are all going to be parts of the real antenna.  I'm not 
sure, therefore, that  you can rely on an SWR measurement made using 
other equipment.


You should certainly make sure that paint is removed from inside the 
panels around where the 2-d fasteners go, to maximise the RF integrity 
of the outside of the case.  As you are not using a microphone, you 
probably don't need to bond signal ground to the case there, as well 
.


PS.  Starting a subject with Re, when it is not a reply, will be scored 
as possible spam by some spam filters.


--
David Woolley
Owner K2 06123

On 23/11/2021 11:57, E J Martin wrote:

I have a long wire resonant (SWR < 1.4) across the 40 band hence don't need an 
ATU.


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Re: [Elecraft] [K2] Cheap power supply for KBT2

[Louandzip via Elecraft]

 
I use a small wall wart type lead acid battery charger/maintainer as the type 
used for moto and lawn equipment.  I use a Battery Tender brand charger I got 
many years ago. You might check out their line, which starts at $45.  Similar 
cheaper chargers can be found on line.  I've never evaluated these for RFI, but 
I've never had an RFI prob that I traced to the charger, which is in the 
garage. 

Lou W7HV
On Tuesday, November 23, 2021, 08:40:51 PM MST, Jim Brown 
 wrote:  
 
 On 11/23/2021 6:46 PM, Douglas Hagerman via Elecraft wrote:
> Looking for ideas for a cheap 14 volt wall wart type power supply for 
> recharging the KBT2 battery.

Ah -- you don't have enough RF noise, and you're looking for more!

73, Jim K9YC
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