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P3 or K3 oddity

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w0mu
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P3 or K3 oddity

w0mu
On 6m I notice a noise source just above or to the right of my vfo
frequency.  The noise moves with the vfo.  The peak is almost S2. It
traces an nice blue line.

Anyone know what this might be?  I don't see this on any other band.

--
Mike W0MU

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Johnny Siu
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P3 or K3 oddity

Johnny Siu
I want to know the answer as well because I notice the same as yours.
 
73 Johnny VR2XMC


________________________________
寄件人︰ W0MU Mike Fatchett <[hidden email]>
收件人︰ "[hidden email]" <[hidden email]>
傳送日期︰ 2014年04月19日 (週六) 5:15 AM
主題︰ [Elecraft] P3 or K3 oddity


On 6m I notice a noise source just above or to the right of my vfo
frequency.  The noise moves with the vfo.  The peak is almost S2. It
traces an nice blue line.

Anyone know what this might be?  I don't see this on any other band.

--
Mike W0MU

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Jim Brown-10
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Re: P3 or K3 oddity

Jim Brown-10
Mike and Johnny,

In CW mode, set the P3 for the narrowest Span (2 kHz), then use the
cursor to find the difference in frequency between the VFO and the
spurious signal. That will be the clue as to its source.

73, Jim K9YC

> On 6m I notice a noise source just above or to the right of my vfo
> frequency.


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w0mu
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Re: P3 or K3 oddity

w0mu
The peak is about 2khz away.

Mike W0MU

On 4/18/2014 5:15 PM, Jim Brown wrote:

> Mike and Johnny,
>
> In CW mode, set the P3 for the narrowest Span (2 kHz), then use the
> cursor to find the difference in frequency between the VFO and the
> spurious signal. That will be the clue as to its source.
>
> 73, Jim K9YC
>
>> On 6m I notice a noise source just above or to the right of my vfo
>> frequency.
>
>
> ______________________________________________________________
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Scott Manthe-2
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Re: P3 or K3 oddity

Scott Manthe-2
In reply to this post by Jim Brown-10
What do you know, teasers have made their way to the list...

73,
Scott, N9AA


On 4/18/14 7:15 PM, Jim Brown wrote:
> Mike and Johnny,
>
> In CW mode, set the P3 for the narrowest Span (2 kHz), then use the
> cursor to find the difference in frequency between the VFO and the
> spurious signal. That will be the clue as to its source.
>
> 73, Jim K9YC
>

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Eduardo González
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Re: P3 or K3 oddity

Eduardo González
In reply to this post by w0mu
Try moving IF connector, P3 and K3 side, disconnect and connect and check
presence of spurious signal. I did same problem and fixed changing IF cable
with high quality cable and connectors.

Edu yv4gmj
On Apr 18, 2014 7:00 PM, "W0MU Mike Fatchett" <[hidden email]> wrote:

> The peak is about 2khz away.
>
> Mike W0MU
>
> On 4/18/2014 5:15 PM, Jim Brown wrote:
>
>> Mike and Johnny,
>>
>> In CW mode, set the P3 for the narrowest Span (2 kHz), then use the
>> cursor to find the difference in frequency between the VFO and the spurious
>> signal. That will be the clue as to its source.
>>
>> 73, Jim K9YC
>>
>>  On 6m I notice a noise source just above or to the right of my vfo
>>> frequency.
>>>
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>> Please help support this email list: http://www.qsl.net/donate.html
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>>
>
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Dave Hachadorian-2
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Re: P3 or K3 oddity

Dave Hachadorian-2
>Try moving IF connector, P3 and K3 side, disconnect and connect
>and check
>presence of spurious signal. I did same problem and fixed
>changing IF cable
>with high quality cable and connectors.

In my experience, the I.F. cable between the K3 and P3 is quite
finicky when it comes to the quality of cable and connectors.  I
have just replaced my two P3 cables with these:
https://www.cablewholesale.com/specs/10x1-01103.php

These cables have a copper braid and aluminum foil shield, the
molded transition from connector to cable looks beefy and solid,
and the connectors fit well.  Prices and shipping are very
reasonable.

Thanks to Hank, W6SX, for pointing out cablewholesale.com as a
good supplier.

Dave Hachadorian, K6LL
Yuma, AZ
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w0mu
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Re: P3 or K3 oddity

w0mu
Thanks for the heads up on the BNC cables.  I am not sure where I got
the one I am using.  I will swap out the cable and see if the issue is
still there.

Mike W0MU

On 4/20/2014 12:49 PM, Dave Hachadorian wrote:

>> Try moving IF connector, P3 and K3 side, disconnect and connect
>> and check
>> presence of spurious signal. I did same problem and fixed
>> changing IF cable
>> with high quality cable and connectors.
>
> In my experience, the I.F. cable between the K3 and P3 is quite
> finicky when it comes to the quality of cable and connectors.  I
> have just replaced my two P3 cables with these:
> https://www.cablewholesale.com/specs/10x1-01103.php
>
> These cables have a copper braid and aluminum foil shield, the
> molded transition from connector to cable looks beefy and solid,
> and the connectors fit well.  Prices and shipping are very
> reasonable.
>
> Thanks to Hank, W6SX, for pointing out cablewholesale.com as a
> good supplier.
>
> Dave Hachadorian, K6LL
> Yuma, AZ ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
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>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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