[Skimmertalk] FW: RBN Freq Shift in WT Bandmap with K3

[K1TTT]

But it doesn't happen with human entered spots??

Check carefully on 20m, if it is a systematic skimmer error they are
proportional to frequency, a 600hz error on 10m would only be 300hz on 20m
and 150hz on 40m.  Also double check that you are really using different
skimmers, when you see the error on a spot write down which skimmer it is
from to be sure you aren't accidentally filtering down to just a couple
skimmers somewhere.

Does the k3 have any kind of band specific settings that might include some
kind of offset?  When you say you tweak the 400hz bandpass is that just
shifting the filters or turning the big knob to get the pitch correct?  

David Robbins K1TTT
e-mail: mailto:k1ttt at arrl.net
web: http://wiki.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://k1ttt.net


-----Original Message-----
From: K1TTT [mailto:K1TTT at ARRL.NET] 
Sent: Friday, October 12, 2012 20:38
To: skimmertalk at contesting.com
Subject: [Skimmertalk] FW: RBN Freq Shift in WT Bandmap with K3

His reply, I think just came to me.

David Robbins K1TTT
e-mail: mailto:k1ttt at arrl.net
web: http://wiki.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://k1ttt.net


-----Original Message-----
From: John Baranyi [mailto:n8um at comcast.net]
Sent: Friday, October 12, 2012 20:15
To: K1TTT
Subject: Re: [Skimmertalk] RBN Freq Shift in WT Bandmap with K3

Appears to be just 10 and 15.  Worse on 10 to the point I have to tweak the
400 cycle bandpass to tune the station in.   

No noticeable problem on 160/80/40/20

I am not filtering skimmers.

Appears to be all skimmers.

John B. N8UM Oak Ridge, Tennessee

On Oct 12, 2012, at 4:05 PM, "K1TTT" <K1TTT at ARRL.NET> wrote:

> Is it JUST on 10m and 15m??  or is it just bigger on 10m and 15m than 
> on 20m??  are you using ALL the skimmers, or have you filtered it down 
> to just a couple?  Is it related to just a particular skimmer or two
maybe??
> 
> David Robbins K1TTT
> e-mail: mailto:k1ttt at arrl.net
> web: http://wiki.k1ttt.net
> AR-Cluster node: 145.69MHz or telnet://k1ttt.net
> 
> 
> -----Original Message-----
> From: John Baranyi [mailto:n8um at comcast.net]
> Sent: Friday, October 12, 2012 18:27
> To: skimmertalk at contesting.com
> Subject: [Skimmertalk] RBN Freq Shift in WT Bandmap with K3
> 
> When I pick skimmer spots off the Wintest bandmap, the returned 
> frequency is off by 300 to more than 600 cycles on my K3.  This occurs 
> on 15 and 10 meters.  Anyone see anything like this?
> 
> John B. N8UM, Oak Ridge, Tennessee
> 
> 
>> From: "Bob Wilson, N6TV" <n6tv at arrl.net>
>> Date: October 12, 2012 1:39:59 PM EDT
>> To: support at win-test.com
>> Subject: Re: [WT-support] RBN Freq Shift in WT Bandmap with K3
>> Reply-To: support at win-test.com
>> 
>> Please define what you mean by "way off".  You click on a spot 
>> reported at
> 28025.0 and the radio goes to 28026.0?  No one has reported anything 
> like that.  What type of receiver are you using?
>> 
>> The frequency calibration of your receiver could be off on 10m.  You 
>> can
> verify this using a signal generator or even an SWR analyzer with an 
> accurate digital read out.
>> 
>> Of course make sure that XIT and RIT on the radio are OFF or zeroed.
>> 
>> RBN data is only reported to the nearest 100 Hz (truncated, not 
>> rounded),
> so if the frequency is off by less than 100 Hz, there is nothing else 
> you can do.
>> 
>> 73,
>> Bob, N6TV
>> 
>> On Fri, Oct 12, 2012 at 8:11 AM, N8UM <n8um at comcast.net> wrote:
>> When using RBNs or even major clusters such as K3LR in the bandmap, 
>> when I
> click on the spot the frequency returned on 15 and 10 meters is off 
> and I have to retune (re zero).  15 meters  is close but 10  meters is 
> way
off.
> Is this the right forum to ask the question?
>> 
>> 
>> 
>> John B.  N8UM  Oak Ridge, Tennessee
>> 
>> 
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