[Skimmertalk] [RBN-OPS] Anomalous skews on 10 meters

Pete Smith N4ZR n4zr at contesting.com
Thu Apr 11 09:03:52 EDT 2013


Hi Brendan - glad to hear about your calibration setup. We are currently 
running a calibration scheme using reference Skimmer stations, comparing 
spots by others with their spots of the same stations.  This is how we 
know when stations start showing up off base.  At the moment I am 
writing this, the largest error being displayed is -0.2 KHGz on 10 
meters by 1 out of 88 Skimmers.

73, Pete N4ZR
Check out the Reverse Beacon Network at
http://reversebeacon.net,
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite
ARC V6 or VE7CC DX cluster node.

On 2/15/2013 5:36 PM, Brendan Minish wrote:
> Some of us (well myself anyway :-) have GPS locked reference
> Oscillators. My QS1R is not locked to this but my K3 is. I know my TX
> frequency to within a fraction of 1Hz, even on 10M
>
> perhaps if a few of us with good Transmit accuracy were to come on 10M
> at some pre-agreed times and make some CQ calls on even KHZ frequencies
> we could establish which Skimmers were a little off and which ones are
> accurate.
>
> We could repeat on 15M (or lower band) for a second set of data points
> This might also lead to some QSO's which is never bad thing
>
>
> Just a thought ?
>
>
>
> On Fri, 2013-02-15 at 17:18 -0500, Pete Smith N4ZR wrote:
>>
>> We're seeing some very anomalous data on frequency calibration on 10
>> meters - numerous stations which previously have been tightly
>> calibrated are being reported as having +0.8 skews.  While we try to
>> figure out what is going on, please don't waste time recalibrating,
>> unless you have specific reason to believe that your calibration has
>> changed.
>> -- 
>>
>> 73, Pete N4ZR
>> Check out the Reverse Beacon Network at
>> http://reversebeacon.net,
>> blog at reversebeacon.blogspot.com.
>> For spots, please go to your favorite
>> ARC V6 or VE7CC DX cluster node.
>>
>>
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