Re: [Elecraft] Astron RS-35M Hum

[Steve Lawrence via Elecraft]

Here's the resolution to my Astron RS-35M Hum issue.

First my thanks to all who replied on and off list. 

With the transformer isolation pads installed the hum was noticeably reduced 
and did not change with load. But it was still noticeable. So I looked at the 
bridge rectifiers to see what was required to change them and discovered that 
one of the six connections had never been soldered!

The only hum now on this 5 year old PS is low level and you have to put your 
ear to the cover to even hear it. It's the same as my never-hummed 14 year old 
unit if you put your ear to the cover.

It appears that inspection/QC missed this one.

Consider the thread closed.

73 Steve WB6RSE
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[Elecraft] Astron RS-35M Hum

[Steve Lawrence via Elecraft]

Astron RS-35M Hum (and probably other Astrons).

I've found some posts in the archives related to this topic so perhaps a bit OT 
but hopefully of general interest.

My Astron RS35M developed a hum that increased with increased load. Otherwise 
working OK but became annoyingly loud.

My solution was to insert a round rubber pad at each of the four mounting 
screws between the chassis and the transformer.

3/4" OD x 1/4" ID x 1/8 inch thick.

https://www.amazon.com/dp/B0BJPF9QMZ

The hum now is very low. Nothing that would otherwise stand out if I weren't 
listening for it. And it does not change with load or increased load.

So the problem seems to be mechanical coupling between the transformer and the 
chassis with the hum amplified when the cover is on the PS. Likely varies with 
any given batch of transformers. My much older RS-35M exhibits no hum at all 
even under load.

73 - Steve WB6RSE

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[Elecraft] For Sale: P3

[Steve Lawrence via Elecraft]

Please reply ONLY off list.

For Sale:

P3 Panadapter - Basic, no VGA etc.

Includes K3 to P3 cables: RS-232; DC power; IF BNC
Original manual.
Elecraft shipping box.

Make offer. 

Shipped US only or pick up in West Los Angeles near Santa Monica Airport.

Thanks - Steve WB6RSE

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[Elecraft] FS K3/P3 Make offer

[Steve Lawrence via Elecraft]

Reposting.

Make offer. Please reply ONLY off list.

For Sale: K3/100 and P3
Configuration details listed below.
Can be shipped or pick up in West Los Angeles near Santa Monica Airport.

Thanks - Steve WB6RSE

K3/100
Five 8-pole filters: 2.8, 1.8, 1.0, 500, 250
KAT3 ATU
KBPF3 General coverage RX Module
KDVR3 Digital Voice Recorder
KTCXO3-1 TCXO
KXV3B RX Ant, IF Out, Xverter Interface - Upgraded "B" module with high band 
preamps
KIOB original module: Audio I/O and RS232 ports (Note: not the KIOB3)
KSYN3A upgrade
Push button encoders and knob upgrades
Gold pins upgrade
DC out upgrade to 1.0A

SUB RX
Two 8-pole filters 2.8 and 500
KSYN3A upgrade
KBPF3 General coverage RX Module

Latest firmware.

All up to date upgrades for the configured hardware, installed and tested at 
Elecraft.

P3 Panadapter - Basic, no VGA etc.

Includes:
K3 DC power cable
K3 to P3: control cable, power cable, IF BNC cable
Original manuals; K3 Fred Cady book
Elecraft shipping boxes


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[Elecraft] FS K3/P3

[Steve Lawrence via Elecraft]

For Sale: K3/100 and P3
Configuration details listed below.
$3500 shipped CONUS. $3400 pick up in West Los Angeles near Santa Monica Airport
Please ** Reply ONLY off list **

Thanks - Steve WB6RSE

K3/100
Five 8-pole filters: 2.8, 1.8, 1.0, 500, 250
KAT3 ATU
KBPF3 General coverage RX Module
KDVR3 Digital Voice Recorder
KTCXO3-1 TCXO
KXV3B RX Ant, IF Out, Xverter Interface - Upgraded "B" module with high band 
preamps
KIOB original module: Audio I/O and RS232 ports (Note: not the KIOB3)
KSYN3A upgrade
Push button encoders and knob upgrades
Gold pins upgrade
DC out upgrade to 1.0A

SUB RX
Two 8-pole filters 2.8 and 500
KSYN3A upgrade
KBPF3 General coverage RX Module

Latest firmware.

All up to date upgrades for the configured hardware, installed and tested at 
Elecraft.

P3 Panadapter - Basic, no VGA etc.

Includes:
K3 DC power cable
K3 to P3: control cable, power cable, IF BNC cable
Original manuals; K3 Fred Cady book
Elecraft shipping boxes


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[Elecraft] K4 eHam reviews

[Steve Lawrence via Elecraft]

There are now well over 700 K4s in deserving hands. I was surprised to see so 
few reviews of it on eHam.

> https://www.eham.net/reviews/view-product?id=14974=1=10 
> 
My review? I've had my K4D for just a very short time but I do plan to post a 
review once I can force myself to stop operating it.

When I first got my K3 I would sometimes think "I wish it did XYZ." Only to 
discover that it did. And more than once. With the K4 I'm finding things I 
hadn't even thought of. A superb job. I'm looking forward to the new features 
in future software releases.

So if you can make the time to post a review on eHam, I'm sure Team Elecraft 
will appreciate it.

73 - Steve WB6RSE
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Re: [Elecraft] Spectrogram for MAC?

[Steve Lawrence via Elecraft]

CocoaModem is an excellent program. But it's 32 bit so it won't work after Mac 
OS 10.14.6 (Mojave). All Mac OS after that require 64 bit applications. The 
developer hasn't supported it for years but the code is free and available for 
anyone having the skill to update it to 64 bit.

73 - Steve WB6RSE

> On Feb 16, 2022, at 1:07 PM, Bill Coleman  wrote:
> 
> 
>> On Jan 18, 2022, at 1:32 AM, Dan Presley  wrote:
>> 
>> What’s the current program folks are using for K2 alignment that works on a 
>> Mac? After 22 years my serial #1010 needs a touchup! 
>> Dan Presley  N7CQR
>> n7...@arrl.net
> 
> I use CocoaModem.
> 
> I have a write-up here on the blog:
> https://boringhamradiopart.blogspot.com/2010/02/configuring-elecraft-k2-crystal-filters.html
> 
> 
> Bill Coleman, AA4LR, PP-ASELMail: aa...@arrl.net
> Web: http://boringhamradiopart.blogspot.com
> Quote: "Not within a thousand years will man ever fly!"
>   -- Wilbur Wright, 1901

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Re: [Elecraft] K4 operating manual now available as both .pdf and .html

[Steve Lawrence via Elecraft]

In your print dialog box look for "print background" and make it unchecked. You 
could then print a white background as well as "print as a pdf." At least 
that's how it works on a Mac OS.

GL - Steve WB6RSE

> On Aug 21, 2021, at 7:29 PM, Alan Bloom  wrote:
> 
>> NOTE:  The operating manual has a black background
> 
> I can make the manual (K4 Built-In Operating Manual, rev C9.pdf) look the way 
> I want on the screen (black text on a white background with images rendered 
> in correct colors) in Adobe Reader by selecting:
> 
> Edit > Preferences > Accessibility
> 
> and then:
> 
> select "Replace Document Colors"
> select "Use High-contrast colors"
> unselect "Only change the color of black text or line art."
> unselect "Change the color of line art as well as text."
> select "High-contrast color combination:" = "Black text on white".
> 
> However, although it looks correct on the screen, when I print it it still 
> comes out with the black background.
> 
> I'm just using the free version of Adobe Reader.  Perhaps someone with a 
> paid-up version can get it to print correctly (print to a printer or print to 
> another PDF file).
> 
> Alan N1AL
> 
> 
> 
> 
> On 8/5/2021 4:08 PM, Wayne Burdick wrote:
>> Rev. C9 of the K4 operating manual can be found here:
>> 
>>   https://elecraft.com/pages/k4-high-performance-direct-sampling-sdr-manuals
>> 
>> In addition to the .html version, we're now providing a .pdf, as requested.
>> 
>> NOTE:  The operating manual has a black background, consistent with the 
>> color scheme used for all text boxes on the K4's LCD. Obviously, printing a 
>> hard copy wouldn't be advised, as you would consume the entire ink supply at 
>> your local Office Depot. It cannot be easily converted to a white background 
>> given all of the text styles used, so this isn't likely to happen in the 
>> short term.
>> 
>> 73,
>> Wayne
>> N6KR
>> 
> 
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Re: [Elecraft] Broke my K2 :(

[Steve Lawrence via Elecraft]

99% Isopropyl is available from Uline. Aerospace industry standard is 
Miller-Stephenson Contact Re-Nu MS-530. Evaporates quickly and leaves no 
residue. Great stuff but pricey and you'll have to work to find it.

GL - Steve WB6RSE

> 
> Yup, it's the 90% stuff.  It was impossible to get a year ago, but not
> too bad now.  Still, I had to wait a month or so when I ordered it from
> Amazon.
> 
>  - Jerry KF6VB
> 
> 
> 
> On 2021-07-14 16:06, John Marvin wrote:
>> Hopefully this is obvious, but make sure you are using the 90-91%
>> isopropyl alcohol, and not the 70% variety. It can still be hard to
>> get the 90% variety these days.
>> 73,
>> John  - AC0ZG
>> On 7/14/2021 4:41 PM, Peter Eijlander (PA0PJE) wrote:
>>> Yes Jerry, isopropyl alcohol does this!
>>> I once cleaned a working print of a GPS receiver with isopropyl alcohol and 
>>> it stopped working. Letting it be and trying it again next day turned out 
>>> it worked perfectly again.
>>>  From then on I leave a PCB to rest after cleaning to have the IPA dry out 
>>> completely...
>>> 73,
>>> Peter - PA0PJE
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Re: [Elecraft] Chasing paddles around desk top

[Steve Lawrence via Elecraft]

Or Museum Wax which holds indefinitely, is easy to move/remove and leaves no 
marks.

Steve WB6RSE

> On Jul 8, 2021, at 12:38 PM, Frank Krozel  wrote:
> 
> And there goes my secret
> 
> -73-  FrankKG9H
> kg9hfr...@gmail.com
> 
> 
> 
> 
>> On Jul 8, 2021, at 2:34 PM, Art Nienhouse  wrote:
>> 
>> Gwen
>> Try this trick dust off the desk top ...wet fingers wipe the rubber feet 
>> with wet fingers (spit) works place the paddle down it will stick its self 
>> to the operating surface nicely.
>> Regards
>> Art
>> ka9zap
>> 

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Re: [Elecraft] KPA1500 / K3 Mystery

[Steve Lawrence via Elecraft]

KPA1500 F/W updated to 2.48 (tks N6TV). Operation as expected. K3 PO changes 
correctly when the Amp is switched in and out of standby.

73 - Steve WB6RSE

> On Oct 18, 2020, at 10:56 AM, Steve Lawrence via Elecraft 
>  wrote:
> 
> Like K5MWR, my K3 & KPA1500 work correctly with the K3 going to the alternate 
> power setting when the 1500 is switched in Standby.
> 
> K3: Firmware 5.67  Power Set per Band; Tuning power Normal.
> 
> KPA1500: Firmware 2.38  Band Change Standby = No.
> 
> Neither unit is connected to a computer for any control functions. The sole 
> connection is an outboard analog to USB interface for the digi modes.
> 
> I'm open to checking any other settings that might illuminate.
> 
> GL - Steve WB6RSE
> 
>> On Oct 18, 2020, at 10:31 AM, Jack Brindle via Elecraft 
>>  wrote:
>> 
>> Might you have set the Normal power for the band to low power? There are two 
>> power levels, after all. We tend to pay attention to the low power setting 
>> for the KPA usage, but it is also quite possible to set the Normal (KPA on 
>> STBY) to a low level as well. That would get the effect you see.
>> 
>> 73!
>> Jack, W6FB
>> 
>> 
>>> On Oct 18, 2020, at 9:28 AM, ockm...@gmail.com wrote:
>>> 
>>> YES, when switching the KPA1500 between OPER and STBY, the K3 displays the
>>> messages "KPA500 OPERATE" and "KPA500 STANDBY", depending.
>>> 
>>> 
>>> 
>>> YES, the K3 is set CONFIG: POWER SET is Per Band.
>>> 
>>> 
>>> 
>>> YES, when in STBY on the KPA1500, I set the "no amp" power to 100 watts, and
>>> when in OPER, I set drive level per band; usually less than 30 watts, which
>>> gets close to the legal limit.
>>> 
>>> 
>>> 
>>> Still the same results as described below.
>>> 
>>> 
>>> 
>>> 73 de Bruce, N7TY
>>> 
>>> Yuma, AZ
>>> 
>>> <http://www.qsl.net/n7ty> www.qsl.net/n7ty
>>> 
>>> 
>>> 
>>> From: ockm...@gmail.com  
>>> Sent: October 18, 2020 06:32
>>> To: 'elecraft@mailman.qth.net' 
>>> Subject: KPA1500 / K3 Mystery
>>> 
>>> 
>>> 
>>> I made a recent change to the "Band Change-> STBY" setting on the KPA1500,
>>> changing from NO to YES.  I did this to ensure the AMP doesn't have any wild
>>> SWR or PWR spikes before the ATU has a chance to "remember" it's setting
>>> after a band change.
>>> 
>>> 
>>> 
>>> Issue:  When switching the AMP from OPER to STBY, the K3 is supposed to
>>> switch from the drive power setting (~25 watts) in OPER, to 100 watts in
>>> STBY, it does not, it remains at the drive power setting.  I am 99% sure I
>>> have all the cabling and settings set correctly in the K3 and KPA1500.  I
>>> went through and manually reset the power settings on each band to let the
>>> K3 and KPA1500 "re-learn" the change made, however, still no joy.
>>> 
>>> 
>>> 
>>> Jim, W6YA, and I have been going back and forth, however neither of us have
>>> had any luck.
>>> 
>>> 
>>> 
>>> Do you KPA1500/K3 owners out there have any ideas or suggestions?
>>> 
>>> 
>>> 
>>> 73 de Bruce, N7TY
>>> 
>>> Yuma, AZ
>>> 
>>> www.qsl.net/n7ty <http://www.qsl.net/n7ty> 
>>> 
>>> 
>>> 
>>> __
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>>> Message delivered to jackbrin...@me.com 
>> 
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Re: [Elecraft] KPA1500 / K3 Mystery

[Steve Lawrence via Elecraft]

Like K5MWR, my K3 & KPA1500 work correctly with the K3 going to the alternate 
power setting when the 1500 is switched in Standby.

K3: Firmware 5.67  Power Set per Band; Tuning power Normal.

KPA1500: Firmware 2.38  Band Change Standby = No.

Neither unit is connected to a computer for any control functions. The sole 
connection is an outboard analog to USB interface for the digi modes.

I'm open to checking any other settings that might illuminate.

GL - Steve WB6RSE

> On Oct 18, 2020, at 10:31 AM, Jack Brindle via Elecraft 
>  wrote:
> 
> Might you have set the Normal power for the band to low power? There are two 
> power levels, after all. We tend to pay attention to the low power setting 
> for the KPA usage, but it is also quite possible to set the Normal (KPA on 
> STBY) to a low level as well. That would get the effect you see.
> 
> 73!
> Jack, W6FB
> 
> 
>> On Oct 18, 2020, at 9:28 AM, ockm...@gmail.com wrote:
>> 
>> YES, when switching the KPA1500 between OPER and STBY, the K3 displays the
>> messages "KPA500 OPERATE" and "KPA500 STANDBY", depending.
>> 
>> 
>> 
>> YES, the K3 is set CONFIG: POWER SET is Per Band.
>> 
>> 
>> 
>> YES, when in STBY on the KPA1500, I set the "no amp" power to 100 watts, and
>> when in OPER, I set drive level per band; usually less than 30 watts, which
>> gets close to the legal limit.
>> 
>> 
>> 
>> Still the same results as described below.
>> 
>> 
>> 
>> 73 de Bruce, N7TY
>> 
>> Yuma, AZ
>> 
>>  www.qsl.net/n7ty
>> 
>> 
>> 
>> From: ockm...@gmail.com  
>> Sent: October 18, 2020 06:32
>> To: 'elecraft@mailman.qth.net' 
>> Subject: KPA1500 / K3 Mystery
>> 
>> 
>> 
>> I made a recent change to the "Band Change-> STBY" setting on the KPA1500,
>> changing from NO to YES.  I did this to ensure the AMP doesn't have any wild
>> SWR or PWR spikes before the ATU has a chance to "remember" it's setting
>> after a band change.
>> 
>> 
>> 
>> Issue:  When switching the AMP from OPER to STBY, the K3 is supposed to
>> switch from the drive power setting (~25 watts) in OPER, to 100 watts in
>> STBY, it does not, it remains at the drive power setting.  I am 99% sure I
>> have all the cabling and settings set correctly in the K3 and KPA1500.  I
>> went through and manually reset the power settings on each band to let the
>> K3 and KPA1500 "re-learn" the change made, however, still no joy.
>> 
>> 
>> 
>> Jim, W6YA, and I have been going back and forth, however neither of us have
>> had any luck.
>> 
>> 
>> 
>> Do you KPA1500/K3 owners out there have any ideas or suggestions?
>> 
>> 
>> 
>> 73 de Bruce, N7TY
>> 
>> Yuma, AZ
>> 
>> www.qsl.net/n7ty  
>> 
>> 
>> 
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> 
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Re: [Elecraft] Antennas and Output Power - KPA-1500

[Steve Lawrence via Elecraft]

See p.25 of the manual. Then p.30 set ATU HiSWR RETUNE to ON for 40m.

GL - Steve WB6RSE

> On Oct 15, 2020, at 1:00 PM, Don Wilhelm  wrote:
> 
> Pete,
> 
> I would say re-tune after switching with the external antenna switch.
> If you have tuned to one antenna (on a single port), and then change the load 
> slightly (by switching to the other antenna), a re-tune is necessary.
> 
> 73,
> Don W3FPR
> 
> On 10/15/2020 3:17 PM, N4ZR wrote:
>> I have two antennas for 40M, a Carolina Windom and a full-wave parasitic 
>> sloper, the latter fed through a 4:1 balun.  The 1500's tuner handles both 
>> antennas nicely, and I have trained it on both of them, but when I switch 
>> from the Windom to the sloper (on an external antenna switch), the output 
>> power changes from ~1400 watts to nearly 1700, often triggering a high 
>> current fault.  Any way around that?
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Re: [Elecraft] Two instances of WSJT on K3s with SubRX?

[Steve Lawrence via Elecraft]

If you have a P3, load 50.313 and 50.323 into memory to be able to toggle 
between A/B. If you see activity on the P3 on the other frequency, toggle.

73 - Steve WB6RSE


On Jun 8, 2020, at 1:23 PM, Jim Miller  wrote:

Has anyone run two instances of WSJT on a single K3s with the SubRX so as
to be able to monitor both 50.323 and 50.313?

Of course I'll only be able to transmit on the instance that has the Main
RX but it would be handy to be able to see both.

Thanks

Jim ab3cv
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Re: [Elecraft] Headphones

[Steve Lawrence via Elecraft]

Comfort is just one consideration. If you use Bose QC35s with Bluetooth there 
is a delay that increases over time. No problem listening to music. But if you 
watch TV the delay becomes intolerable. 

For BT use to watch TV you want a set using the Qualcomm APTX LL (low latency) 
codec.

The Bose 700s don't use the APTX codec yet they don't have the delay of the 
35s. So there's likely more than one LL codec.

Delay is not an issue when using a cord vs BT.

73 - Steve WB6RSE



On May 7, 2020, at 10:38 AM, Ken Widelitz  wrote:

I recently received the Bose Quiet Comfort II headphones as a gift.

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Re: [Elecraft] New Mystery: Copying groups vs plain language text (Rather OT)

[Steve Lawrence via Elecraft]

Pictures here;

> http://www.wb2lqf.com/amateur-radio-and-me/the-legendary-mr-charles-finkleman 
> <http://www.wb2lqf.com/amateur-radio-and-me/the-legendary-mr-charles-finkleman>

73 - Steve WB6RSE

> On May 1, 2020, at 9:46 PM, Frank Scolaro  wrote:
> 
> Is Finkleman the guy with the 'half glasses' ??  Took my test from him in 
> 1966, as did my father just before WWII...
> 
> 73,
> Frank, W2YK
> 
> 
> 
> At 01:59 AM 5/1/2020, Steve Lawrence via Elecraft wrote:
>> FCC office in lower Manhattan. Finkleman's exam chairs were school desk 
>> writing arm chairs. The writing surface had grooves everywhere. They were 
>> the size of the Grand Canyon. You were given a very thin sheet of paper and 
>> a dull pencil to write your copy. I could barely get the pencil out of a 
>> groove to write the next letter. Felt deliberate.
>> 
>> 73 - Steve WB6RSE
>> 
>> 
>> 
>> On Apr 30, 2020, at 9:58 PM, Victor Rosenthal 4X6GP  
>> wrote:
>> 
>> Finkleman's keys in New York were like that, too. I remember trying to 
>> adjust mine. He must have used a pipe wrench to tighten them down.
>> 
>> 73,
>> Victor, 4X6GP
>> Rehovot, Israel
>> Formerly K2VCO
>> CWops no. 5
>> http://www.qsl.net/k2vco/
>> On 01/05/2020 5:30, Fred Jensen wrote:
>> > The 2T and Extra were both pencil/paper copy and J-28 screwed to the desk 
>> > with ungodly wide spacing ... not to be adjusted by examinees. [:-)
>> 

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Re: [Elecraft] New Mystery: Copying groups vs plain language text (Rather OT)

[Steve Lawrence via Elecraft]

FCC office in lower Manhattan. Finkleman's exam chairs were school desk writing 
arm chairs. The writing surface had grooves everywhere. They were the size of 
the Grand Canyon. You were given a very thin sheet of paper and a dull pencil 
to write your copy. I could barely get the pencil out of a groove to write the 
next letter. Felt deliberate.

73 - Steve WB6RSE



On Apr 30, 2020, at 9:58 PM, Victor Rosenthal 4X6GP  wrote:

Finkleman's keys in New York were like that, too. I remember trying to adjust 
mine. He must have used a pipe wrench to tighten them down.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
On 01/05/2020 5:30, Fred Jensen wrote:
> The 2T and Extra were both pencil/paper copy and J-28 screwed to the desk 
> with ungodly wide spacing ... not to be adjusted by examinees. [:-)

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Re: [Elecraft] [OT] Gap Width

[Steve Lawrence via Elecraft]

No need to replace the feet, ever. Use museum wax.

GL - Steve WB6RSE



On Mar 28, 2020, at 12:54 PM, Bob McGraw K4TAX  wrote:

I ordered my replacement feet, he indicated they typically only last 3 to 4 
years before they start slipping around.

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Re: [Elecraft] KPA1500 Antenna Select Suggestion

[Steve Lawrence via Elecraft]

Menu:

ATU HiSWR Retune (per band) - default is OFF

Set to ON (per band)

Change antennas, a "dit" will switch to the learned tuning solution, per bin, 
for the newly selected antenna.

See the manual section: "Multiple Antennas and External Antenna Switches."

73 - Steve WB6RSE
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[Elecraft] For Sale KPA500

[Steve Lawrence via Elecraft]

For Sale KPA500. Price reduced. Full pictures available.

> https://www.eham.net/classifieds/detail/566704 
> 
Please email me off list.

73 - Steve WB6RSE
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[Elecraft] FS KPA500

[Steve Lawrence via Elecraft]

The KAT500 has been sold.

The KPA500 is still available.

https://www.eham.net/classifieds/detail/566451 


73 - Steve WB6RSE
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[Elecraft] For Sale KPA500 KAT500

[Steve Lawrence via Elecraft]

For Sale: 

Elecraft KPA500 HF+6 Power Amplifier - $1750.
KAT500 HF+6 auto-tuner - $525.
Both are in excellent condition. Pick up near Santa Monica, CA airport or plus 
insured shipping in factory boxes.

Please email me off list for additional details. USA only.

Tks & 73,

Steve
WB6RSE

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[Elecraft] FS Alpha 87A

[Steve Lawrence via Elecraft]

Alpha 87A for sale.

Details off list.

TKS & 73 - Steve WB6RSE
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Re: [Elecraft] Location of VFO B on the K4

[Steve Lawrence via Elecraft]

I always have the DX on VFO A on my K3 because this allows quick adjustment of 
receiving controls - NR NB Width Shift etc - not so straight forward if the DX 
is on B.

With VFO B wide open it's much easier - for me - to assess and move around in a 
pile up.

Everyone has their method. This works for me with the purpose of spending as 
little time as possible in a pile up.

There's no right nor wrong - just different.

Ergonomically you might not have laid out something the same way but you'll 
likely get use to it fairly fast.

"The only constant is change."

73 - Steve WB6RSE

>  
> On May 25, 2019, at 1:27 PM, Don Wilhelm  wrote:
> 
> Since any K4 has the subRX built in, I don't see the problem, although some 
> changes in operating habits may be in order.
> 
> For working DX, tune to the DX station with VFO A - then put VFO A into VFO B 
> - Listen to the DX on the subRX.
> 
> Then tune with VFO A for a suitable transmit frequency.  Never a need to 
> touch the VFO B knob, and no need to turn on SPLIT - always transmit on VFO A 
> frequency.
> 
> The only reason to touch the VFO B knob would be if and when the DX decides 
> to move his transmit frequency.
> 
> For contests folks will likely use RIT/XIT more than VFO B (except when 
> scanning another band for multipliers), and for that type operation the K-Pod 
> would be a desirable addition for many reasons, including easy access to 
> Macros.
> 
> 73,
> Don W3FPR
> 
> On 5/25/2019 3:56 PM, Bill Steffey wrote:
>> I rarely use RIT/XIT...   and the B VFO  frequently
>>so after November I may HAVE to use the K-POD more than I have been. 
> 
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Re: [Elecraft] Location of VFO B on the K4

[Steve Lawrence via Elecraft]

I use the B VFO control very often. Once I tune to a station that's operating 
CW split, I press the PF1 button on my K3 to run a macro that turns on the 
second receiver, sets its bandwidth and enables TX up 1 KHz. My hand then moves 
to the B VFO control for TX frequency adjustments based on my success vs what I 
hear the DX send and what I see on the P3.

I almost never use RIT.

I too would have placed the K4 B VFO knob in a location similar to the K3's.

Taking a closer look at the K4, I see four programmable buttons (vs two on the 
K3). If I were to use PF1 for the same macro as above my hand would already be 
right there to tune the B VFO.

Of course the proof is in the actual experience. I suspect getting use to 
position of the K4 B VFO control will be quick.

Looks like cognitive science at work.

73 - Steve WB6RSE
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[Elecraft] Elecraft Announce K4 Software Defined Radio SDR at Hamvention 2019 - YouTube

[Steve Lawrence via Elecraft]

Eric interviewed re: K4. Many questions answered.

73 - Steve WB6RSE


> https://www.youtube.com/watch?v=LT6PGY5lOj4 
> 
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[Elecraft] Elecraft K4 At Hamvention - YouTube

[Steve Lawrence via Elecraft]

K4 in action at Hamvention. - Steve WB6RSE


> https://www.youtube.com/watch?time_continue=24=D7sSBJi2w0w 
> 
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[Elecraft] K4 capabilities

[Steve Lawrence via Elecraft]

A reduction of the seemingly endless speculative postings might be had if the 
posters first just reviewed the tabs on the K4 pre-order page:

https://elecraft.com/pages/k4-pre-order 


Pre-Order - Intro - Overview - Models - Specs - FAQ

They are very informative.

Steve WB6RSE
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Re: [Elecraft] Best Mac to use with KX3

[Steve Lawrence via Elecraft]

If one wants to use cocoaModem for RTTY, PSK or the other modes it supports, 
note that it runs fine under Mac OS 10.12 and has been reported to run under 
Mac OS 10.13 (I personally haven't tried it.)

cocoaModem is a 32 bit program and possibly won't run under OS 10.14 and above 
that might require programs to be 64 bit. As of 9-24-2018 see:

> https://support.apple.com/en-us/HT208436 
> 

About this Mac > System Reports > Software > Applications will show which 
programs loaded on the machine are 64 bit compatible.

The source code is available for cocoaModem but the developer hasn't supported 
the program in quite some time.

Macs as supplied with OS 10.14 and above could have a problem with cocoaModem - 
which is an excellent program for dual receive split RTTY operation.

So it's more than just which Mac to get, it's will the machine run the 
applications you want to run.

If anyone has run cocoaModem under 10.13 or 10.14 please report.

73 - Steve WB6RSE
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[Elecraft] 2019 Visalia Top Band Dinner

[Steve Lawrence via Elecraft]

Announcing the Top Band Dinner at the 2019 Visalia International DX Convention.

Buffet Dinner. Pre-Assigned seating. Door Prizes. $42/person. 

Program: "Snapshot: VK9XG to North America on 160m," Chris Duckling, G3SVL and

"KH1/KH7Z Top Band From Baker Island" George Wallner, AA7JV

For the most up to date information and to register see:  
http://topbanddinner.jimdo.com/ 

73 - Steve WB6RSE

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Re: [Elecraft] KAT-500 auto-tuning issue with SSB vs. CW

[Steve Lawrence via Elecraft]

K3 + KAT500 via Aux Bus

1 - Train the KAT500
2 - Switch to Manual Mode
3 - Turn on K3 frequency tracking. CONFIG:KAT3 tap "1" to KAT500Y.

GL - Steve WB6RSE
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Re: [Elecraft] Craziest / most rewarding QSOs

[Steve Lawrence via Elecraft]

One of mine:

http://dokufunk.org/amateur_radio/dxcc_entities/index.php?CID=4728=EN=4758#A4758
 


73 - Steve WB6RSE
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[Elecraft] FOR SALE PR6 KXV3A

[Steve Lawrence via Elecraft]

For Sale. For K3 non "S."

Elecraft PR6 6m preamp. Includes dual BNC connectors, power cord with RCA plug, 
DB15 to K3 AUX connector, original manual.

$110 shipped USPS. USA only.

Elecraft KXV3A. Upgraded KXV3. Allows connection of an RX antenna and interface 
for a PR6 6m preamp. This is NOT the KXV3B with preamps.

$35 shipped USPS. USA only.

Both: $135.

Please contact me ONLY OFF LIST.

Tks & 73 - Steve WB6RSE

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Re: [Elecraft] K3 TX Calib Dummy Load Recommendations

[Steve Lawrence via Elecraft]

"What are recommended dummy loads to consider for use when running the K3 TX 
Calibration?"


Thanks to all who've replied both on and especially off list.

The general consensus is that BIRD makes the best dummy loads. Avoiding units 
that incorporate BeO is a consideration.

Others mentioned, in no particular order:

Heath / MFJ Cantenna
Oak Hills Research RFL 100
db Products
Designs that use Caddock film resistors.
MFJs.

TKS & 73 - Steve WB6RSE


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[Elecraft] K3 TX Calib Dummy Load Recommendations

[Steve Lawrence via Elecraft]

What are recommended dummy loads to consider for use when running the K3 TX 
Calibration?

Thanks - Steve WB6RSE
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[Elecraft] TOP BAND DINNER VISALIA DX CONVENTION

[Steve Lawrence]

Of general interest to many Elecraft owners:

Announcing the Top Band Dinner at the 2010 Visalia DX Convention.

This dinner requires separate reservations from the convention itself.

WHEN: Friday, April 16, 2010. Check-in starting 6:30 PM.
WHERE: Convention Hotel - Holiday Inn Visalia CA - Birch Room.
PROGRAM: Bruce Butler, W6OSP: The Low Bands from K4M, Midway.
DOOR PRIZES: ARRL, NCDXF, Yaesu, Elecraft, Array Solutions and many more.
MENU: Miner 49er BBQ buffet dinner.
COST: $36 (USD)/person.

If you wish to attend, send me an email - off list please! - with the number of 
reservations you would like along with CALL, FIRST  LAST NAME, and contact 
EMAIL address for each person.

You will receive a return email confirming availability along with payment 
information.

Advance paid reservations are absolutely required! Another sell out is 
anticipated. First come, first served.

73 - Steve WB6RSE
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[Elecraft] K3 ANT HOLD?

[Steve Lawrence]

If the K3 ANT button is HELD, the VFO B digits switch to a 5 digit  
display that looks like it's waiting for an input. NIL in the manual  
on this. Function?

73 - Steve WB6RSE
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[Elecraft] K3 Tuning Rate Macro

[Steve Lawrence]

The K3 SHT50; command will toggle the RATE between 0.10 and 0.01  
tuning. Is there are way to force the rate to 0.10. This is for use in  
a Split macro sequence to allow fast tuning of a pile up with VFO B.

Thanks! Steve WB6RSE
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Re: [Elecraft] Split reminder

[Steve Lawrence]

On Oct 19, 2009, at 12:34 PM, The Smiths wrote:

This is true, but what happens when you operate your rig like I do,  
and you keep your RIT on.
_

There is just so much any manufacturer can do to protect an operator  
from him or herself. The K3 already has the delta f light, the SPLIT  
indicator on the display (TU W2ZK - I'd forgotten that) and frequency  
readout for both VFOs. As one who has made his share of errors with  
the K3 and other radios, there is simply no substitute for just  
learning how to use any radio. I've been puzzled more than a few times  
by the K3 only to find the answer with RTFM.

The real problem with split errors is the insidious nastiness of the  
cops when a quick RSE up will do (and the DX isn't TX!), or perhaps  
a Talk cluster message that no one else sees. Either would be far less  
disruptive.

73! Steve WB6RSE
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Re: [Elecraft] K3 LIN OUT Behavior

[Steve Lawrence]

On Sep 4, 2009, at 1:22 PM, Lyle Johnson wrote:

Not with the present UI.
__

Thanks Lyle - I just found a work around:

LIN OUT = NOR, SUB RX ON  -AND- LOCKED to the MAIN = same audio and  
fixed level in both channels.

Have to remember to unlock VFOs when operating digi modes split.

TU - Steve WB6RSE
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[Elecraft] FS: CUP 13.5V/2.4A Power Supply

[Steve Lawrence]

The Palm Paddles and K1 have been sold. Thanks to all who inquired.

FOR SALE:

CUP 36-12-1 Power supply with AC cord. 13.5 Volts at 2.4 amps.

http://www.mtechnologies.com/cup/

$35 shipped USA - USPS

Please Email off list.

TKS  73 - Steve WB6RSE



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Re: [Elecraft] WTB tilt stand--K1 (accessories and correction)

[Steve Lawrence]

On Jun 19, 2005, at 12:41 PM, Sandy wrote:

I second this motion!  Only thing I had for my K1 I DIDN'T LIKE was  
the internal battery
option.  Batteries are a pain to change.  No quick disconnect to  
reinstall old

cover,



I also installed an RC connector for quick K1 top changes. I have pix  
available to email if anyone would like to see it. Email off list pse.


73 - Steve WB6RSE
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Re: [Elecraft] stranger than real life

[Steve Lawrence]

On Jun 11, 2005, at 5:12 PM, John R. Lonigro wrote:

So if the ARRL would say to use an antenna 10.52 meters long, the first 
thing most hams would have to do is convert to feet.  So why not 
specify it in feet to start with?  It's inconsistent, but sometimes 
handy to mix units.


__

Mixing units is not always benign.

September 1999: NASA lost a $125 million Mars orbiter because a 
Lockheed Martin engineering team used English units of measurement 
while the agency's team used the more conventional metric system for a 
key spacecraft operation. 


73 - Steve WB6RSE

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Re: [Elecraft] stranger than real life

[Steve Lawrence]

On Jun 11, 2005, at 6:36 PM, Matt Osborn wrote:

To replace those with arbitrary measurements (simply to make the math
easier?) seems absurd to me.  I just bought a calculator.


And what happens when your battery goes dead?  ;-)

73 - Steve WB6RSE

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[Elecraft] FS K1-4 etc.

[Steve Lawrence]

FOR SALE:

1) K1-4 SN 1861 with all accessories:
KNB1 Noise blanker
KAT1 Auto tuner
KBT1 Internal battery adapter (with RC type connectors so tops may be 
swapped easily)

KTS1 Wide-Range Tilt Stand

Includes QSK Thump and AGC improvement mods.
Finger Dimple.

Built for 40-30-20-17m with 80 KHz spread.
Excellent condition. Carefully aligned. Worked perfectly at first power 
on and works great. Seldom used.


All original docs, notes and unused crystal/parts for 17m and 160 Khz 
tuning spread.


$600.

2) CUP 36-12-1 Power supply with AC cord.

$35

http://www.mtechnologies.com/cup/

All plus insured shipping. USA only please.

Email off list.

TKS  73 - Steve WB6RSE

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[Elecraft] FS K1-4 etc.

[Steve Lawrence]

FOR SALE:

1) K1-4 SN 1861 with all accessories:
KNB1 Noise blanker
KAT1 Auto tuner
KBT1 Internal battery adapter (with RC type connectors so tops may be 
swapped easily)

KTS1 Wide-Range Tilt Stand

Includes QSK Thump and AGC improvement mods.
Finger Dimple.

Built for 40-30-20-17m with 80 KHz spread.
Excellent condition. Carefully aligned. Worked perfectly at first power 
on and works great. Seldom used.


All original docs, notes and unused crystal/parts for 17m and 160 Khz 
tuning spread.


$600.

2) Palm Radio Mini Paddle SN 0336
Gray, extra quick mount, magnets, cord.

$75

http://www.mtechnologies.com/palm/


3) CUP 36-12-1 Power supply with AC cord.

$35

http://www.mtechnologies.com/cup/

All plus insured shipping. USA only please.

Email off list.

TKS  73 - Steve WB6RSE

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Re: [Elecraft] K1 KBT1

[Steve Lawrence]

Mike - A new design could have a sealed holder for the batteries or at 
least some sort of tray. But I don't share your general concern if the 
batteries are of established quality and the charging circuit is 
designed correctly.


Speaker wise, I use stereo phones so a jumper from the board to a 
separate connector on the back of the top for an external speaker would 
preserve the existing functionality that I prefer.


73, Steve WB6RSE


On Aug 27, 2004, at 8:17 AM, Mike Morrow wrote:


Steve wrote:


What I'd like to see is a K1 top ... with a connector on the
back for the charging voltage input.


I would *not* be comfortable charging batteries inside the K1 case, 
since
there's no barrier around the batteries to prevent chemical leakage on 
to

the K1 PCBs.


A connector for an external speaker would be a simple add.



That connector is already there.  The audio output to the speaker is 
exactly
the same as the output to the phones.  That's one reason it's an 
advantage

to connect the K1 phone jack for for a mono plug (disconnect the ring
connection).  Then the plug for mono phones or an external speaker can 
be

inserted fully without shorting the audio to ground.

73,
Mike / KK5F

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[Elecraft] K1 KBT1

[Steve Lawrence]

On my KBT1 I installed a set of RC connectors so I can swap tops. To be 
generous, the KBT1 speaker is a compromise.  I always operate with 
headphones, so a speaker is otherwise superfluous for me.


What I'd like to see is a K1 top without a speaker that holds 10-12 AA 
NiMH cells and the circuitry for charging them with a connector on the 
back for the charging voltage input. A connector for an external 
speaker would be a simple add.


In other words, I rather have an optional plug in speaker when needed 
rather than having to open up the K1 to charge the batteries.


73, Steve WB6RSE

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Re: [Elecraft] Another Glowing Review of the K2

[Steve Lawrence]

On Aug 24, 2004, at 4:59 PM, [EMAIL PROTECTED] wrote:

Just received the latest issue (9-10/2004) of NCJ (National Contest 
Journal)
with the feature article: Use of Comparative Analysis to Estimate the 
DX

Prowess of HF Receivers, by SP7HT.

Again, the only real competition are radios that cost many times more 
than

the K2 - Orion and IC7800.




And when the K2 evolves to a two knob true dual VFO/receive radio it 
will rise to yet another notch.


73, Steve WB6RSE

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[Elecraft] North Dakota

[Steve Lawrence]

Anyone on this list from North Dakota?

Please reply directly.

Tks  73, Steve WB6RSE

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Re: [Elecraft] cheap 1A linear power supply

[Steve Lawrence]

Here's one that's perfect.

http://www.mtechnologies.com/cup/index.htm

73, Steve WB6RSE

On Jul 28, 2004, at 2:19 PM, Eric Ward wrote:

Has anyone tried the 12V 1A linear regulated wall wart from Jameco 
(part #
170245CL) as a hotel room power supply for the KX1?  It is cheap and 
sounds

like it would work-i.e. not a switcher and regulated.

TNX and

73,

Eric

N0HHS







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Re: [Elecraft] Re: K1 on USB CW

[Steve Lawrence]

On Jun 17, 2004, at 10:43 AM, Mike Morrow wrote:


I'd be curious about the advantages that you see in a K1 LSB-to-USB
conversion.

73,
Mike / KK5F

Mike - I have no interest in listening to SSB with the K1 and have set 
it up for an 80 kc spread. The advantage to USB CW is that it has long 
been the standard for CW - even on 160-80-40 where sideband operation 
is LSB - CW is still USB. I usually start tuning from the bottom end of 
the band going up and it is often useful to hear what's up the band as 
you tune higher. For casual operation, it is not that big a deal but in 
chasing DX it is nice hear the split up frequency. With LSB you would 
hear the last station worked only if he was below your listening 
frequency rather than above, especially if the signal is weak. For 
serious DX chasing, USB CW is the way to go.


That said, the K1 is a very impressive design with clever mechanical 
assembly features and carefully thought out ergonomics. Wayne and Eric 
really know their stuff.


By-the-way: The present day LSB - USB band standards have their roots 
from years ago in the availability of 9 Mc crystals / filters - when 
SSB was experimental and you had to build your own. 9 Mc plus a VFO 
running at 5.0 to 5.5 Mc gives you 20m USB. Subtract the VFO frequency 
and you tune backwards on 75/80m and you get LSB. There is actually 
no reason for USB vs LSB on any band anymore. It's just convention from 
the original experimental designs. 20m and above is USB, below 20m it's 
LSB. You'll occasionally hear some DX on 20m on LSB to keep the crowd 
away.


I'd be interested in anyone's attempts at shifting the K1 to USB CW.

73, Steve WB6RSE

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Re: [Elecraft] Re: K1 on USB CW

[Steve Lawrence]

Vic - As I recall from about a million years ago, when the hardware was 
actually built, when you subtracted to get to 75m, the sideband 
reversed. If not, the standard on 160-80-40 today would be USB - but it 
isn't.


73, Steve WB6RSE

On Jun 17, 2004, at 4:59 PM, Vic Rosenthal wrote:

This is just wrong.  Say you generate a USB signal at 9 MHz from a 1 
KHz

audio tone.  The (suppressed) carrier of the generated USB signal is at
9.000 MHz and the upper sideband is at 9.001 Mhz.  Then mixing with a
5.0 MHz VFO would give sum frequencies of 14.000 and 14.001 MHz as well
as differences of 4.000 and 4.001 MHz.  This is USB in both cases.

Of course, the VFO would tune in opposite directions.

Even a CW operator like me can add and subtract!

--
73,
Vic, K2VCO
Fresno CA


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