[Skimmertalk] [RBN-OPS] false 6 meter spots

[Jan ok2zaw]

Hi to all.

Just idea... what abt to use HF on IN1 and 6m on IN2 with better preamp + BPF? I am thinking to do it by this way at OL7M.

Vy 73 Jan OK2ZAW / OL9A

S pozdravem Jan Šustr
Regards Jan

http://www.ok2zaw.com
http://www.qro.cz



-----Original Message-----
From: Skimmertalk [mailto:skimmertalk-bounces at contesting.com] On Behalf Of Mark n2qt
Sent: Friday, July 07, 2017 1:47 PM
To: Tom Berry
Cc: RBN-OPS at yahoogroups.com; skimmertalk at contesting.com
Subject: Re: [Skimmertalk] [RBN-OPS] false 6 meter spots

It is harder to get good perceived performance on 6 than the other bands.

1. There is less band noise to cover up the spurs from chargers, Ethernet cables and the like.
2. We normally set to spot non Cq stations which means that criteria is no longer used to
     To determine who to spot
3. There are fewer stations to spot overall so the bad spots really stick out.
4. RX overload protectors can create IM that shows on 6m.

In my case I use a single band soft rock with CWSkimmer so it was easy to see the band segments that had neighborhood spurs to block for decoding. I also use a 6m only horizontal loop that cuts down on out of band signals. This sdr has a front end filter that helps. 
Using Aggressive decoding really cuts down the bad spots Using Aggressive also makes it a lot harder for stations to be spotted so I created a watch  list of beacon stations and other stations I'm interested in to help the decoding. 

N6ev, Paul has a write up posted on the rbn site that gives these and other tips. 

Mark. N2QT

> On Jul 6, 2017, at 10:20 PM, Tom Berry <tberry1 at triad.rr.com> wrote:
> 
> Andy,  Yes I know what you mean.   I'm not sure what causes that.
> 
> 73 Tom AA4VV
> 
>> On 7/6/2017 12:30 PM, Andy KU7T wrote:
>> 
>> What at the reasons that skimmer seems to produce more busted spots 
>> on 6m? I have asked this myself before…
>> 
>> I too have experienced this with my QS1R and gave up as I spotted a 
>> few European stations that clearly were not there. I have not this 
>> issue on 10 and spot quite a few beacons during the day.  I am using 
>> a minicurcuits pre-amp. I would like to enable skimming on 6m but 
>> sort of gave up…
>> 
>> Thanks,
>> 
>> Andy
>> 
>> KU7T
>> 
>> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for 
>> Windows 10
>> 
>> *From: *Tom Berry tberry1 at triad.rr.com [RBN-OPS] 
>> <mailto:RBN-OPS-noreply at yahoogroups.com>
>> *Sent: *Thursday, July 6, 2017 9:01 AM
>> *Cc: *skimmertalk at contesting.com <mailto:skimmertalk at contesting.com>; 
>> RBN-OPS at yahoogroups.com <mailto:RBN-OPS at yahoogroups.com>
>> *Subject: *[RBN-OPS] false 6 meter spots
>> 
>> Sorry for all the false 6 meter spots from EU. I was using an ANAN 
>> 100D with the LPF/HPF filters turned off.
>> They were probably 20 meter stations.
>> I will try to be more careful in the future.
>> 
>> 73 Tom AA4VV
>> 
>> __._,_.___
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