Re: [Elecraft] K1 Noise Blanker KNB1 already-built and working

[Eric Norris]

I wish I could!  My vague memory is that Don Wilhelm pointed me to a couple
of mods.  A search of my emails didn't find any of Don's advice prior to
2017, and I think that is about 5 years short.

I suggest you google it, and check the Nabble archives.  The mods were
simple, changing a cap and perhaps a resistor value or something.

The K1 is a great little rig.  I built the 2- band version, and then the
4-band filter board, with all options.  It still works like a champ.

73 Eric WD6DBM

On Tue, Nov 30, 2021, 4:10 PM Douglas Hagerman via Elecraft <
elecraft@mailman.qth.net> wrote:

> Hi Eric.
>
> Can you be more specific about the mod that improved the KNB1? I know
> there were a few changes early on, but mine is from about 2010 so should
> have had all the official mods in the initial build. Other than the “make
> the threshold higher than it already is” mod, is there something else?
>
> Doug, W0UHU.
>
> > Message: 26
> > Date: Tue, 30 Nov 2021 14:45:29 -0800
> > From: Eric Norris  norrislawfi...@gmail.com>>
> > To: n4so@gmail.com 
> > Cc: "elecraft@mailman qth. net"  ELECRAFT@mailman.qth.net>>
> > Subject: Re: [Elecraft] K1 Noise Blanker KNB1 already-built and
> >   working
> > Message-ID:
> >ahu_-jxd...@mail.gmail.com  =ahu_-jxd...@mail.gmail.com>>
> > Content-Type: text/plain; charset="UTF-8"
> >
> > When you find one, be prepared to mod it--one of the widely used mods
> > vastly helped mine.
> >
> > 73 Eric WD6DBM
>
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Re: [Elecraft] K1 Noise Blanker KNB1 already-built and working

[Douglas Hagerman via Elecraft]

Hi Eric.

Can you be more specific about the mod that improved the KNB1? I know there 
were a few changes early on, but mine is from about 2010 so should have had all 
the official mods in the initial build. Other than the “make the threshold 
higher than it already is” mod, is there something else?

Doug, W0UHU.

> Message: 26
> Date: Tue, 30 Nov 2021 14:45:29 -0800
> From: Eric Norris mailto:norrislawfi...@gmail.com>>
> To: n4so@gmail.com 
> Cc: "elecraft@mailman qth. net"  >
> Subject: Re: [Elecraft] K1 Noise Blanker KNB1 already-built and
>   working
> Message-ID:
>>
> Content-Type: text/plain; charset="UTF-8"
> 
> When you find one, be prepared to mod it--one of the widely used mods
> vastly helped mine.
> 
> 73 Eric WD6DBM

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Re: [Elecraft] K1 Noise Blanker KNB1 already-built and working

[Eric Norris]

When you find one, be prepared to mod it--one of the widely used mods
vastly helped mine.

73 Eric WD6DBM

On Mon, Nov 29, 2021, 7:50 PM Ken Brown  wrote:

> I am looking to buy an already built Elecraft K1 Noise Blanker KNB1.
> The pulse noise from the nearby power lines makes the Elecraft K1
> not very usable at this location.
>
> Ken
> N4SO
> E-mail  redscarlette7...@gmail.com
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[Elecraft] Complete KX3 Station for sale

[marvwheeler]

Due to it not being used I am offering my KX3 station for sale. This
complete station consist of:

KX3, serial number 5374, with

   KXFL-3 roofing filter

KXAT3-F antenna tuner

   KXBC-3 battery charger

   MH3 microphone

   Windcamp Heat sink, end panels and protective shields

   Accessory Cable Set

Pro Audio Engineer KX33 Power Supply

1 set used batteries (condition unknown)

Fred Cady Book

PX3, Ser No. 2798, in original box. This has very little use.

KXPA100  with KXAT100 internal antenna tuner.

Home sewn padded bags for the KX3 and PX3.

The station is in good cosmetic and electrical condition and has no known
issues.

The above items offered at $2650 plus shipping.

Marv

KG7Vat arrl.net

 

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Re: [Elecraft] P3 Issue

[Ray]

Ken an Mike
I did some Troubleshooting over the Years.
2 thing to help.

I understand that there is an App for the I-Phone that 
Lets you see a Heat/IR Pattern on the screen.
This should help SEE a Heated Part.
The 2nd is, get a Can of Component Cooler/
Freeze Spray to Shoot the Hot Part and see
The Problem recovers.
I wou;ld Clean All Cables, Sockets and Plugs
Power Supply Connections FIRST.

Ray WA6VAB  K3  

From: Michael Carter
Sent: Monday, November 29, 2021 9:08 PM
To: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] P3 Issue

Ken,

I have not experienced the difficulty
with my P3 that you encountered,
but the fact that both the P3 front
panel display and the external SVGA
display shut down indicates a problem
with data not being provided to either
display driver system OR there is a
thermal problem with one of the
onboard voltage regulators on the P3
Rear Panel I/O board.  The P3 has
both +5V and + 3.3V regulators with
crowbar over-voltage protection, and
both are fed from the +12V DC input
jack.  The P3 SVGA board has additional
voltage regulators supplying 1.2, 2.5, and
3.3V, and these are fed from the +5 V
regulated supply on the P3 Rear Panel I/O
board.

My suspicion is a thermal sensitivity
in the +5 V regulator or its crowbar
protection circuit.  However, I would
first check the +12V DC input connection
to the P3 and be sure that it is stable
at +12V over time.  If you supply that
voltage from the auxiliary +12V output
of a K3 or K3s, you should also check
that the problem doesn't stem from
a problem inside the transceiver.  My
recollection is that a modification
was required in the original K3 to
increase the available current at the
auxiliary +12V DC output to support
the SVGA option in the P3.

I am curious to know what you find...

73,
Mike, K8CN
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Re: [Elecraft] Any new info on K3/K3S updates availability?

[Ed Gray W0SD]

I was told by Madelyn on 10-22-2021 4-6 months.  The problem is getting 
parts.


I paid for mine! .

Ed W0SD

On 11/30/2021 8:21 AM, Pete Smith N4ZR wrote:
I'm still hoping for a KIO3BUPKT for my K-3, but nothing heard since, 
I think, September - still TBD on the web site.



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[Elecraft] Any new info on K3/K3S updates availability?

[Pete Smith N4ZR]

I'm still hoping for a KIO3BUPKT for my K-3, but nothing heard since, I 
think, September - still TBD on the web site.


--
73, Pete N4ZR
Check out the new Reverse Beacon Network
web server at .
For spots, please use your favorite
"retail" DX cluster.

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[Elecraft] Noise Blanker KNB1 FOR K1

[Ken Brown]

I am looking for the Elecraft K1 Noise Blanker KNB1.
Does anyone have this for sale?

Ken
N4SO
Elecraft K1  number 260
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