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TOPIC: CW Contest Sttings

CW Contest Sttings 27 Jul 2020 10:49 #1

  • G3XLG
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I was in the IOTA Contest this weekend where "island" stations are multipliers. Consequently UK stations are in demand from any "mainland Europe etc" stations. I entered in the CW only category.
I was using my SunSDR2Pro with my Elecraft amplifier both of which worked perfectly in Search & Pounce.
However when I tried "Running" in the contest, it seemed that the SDR was "overwhelmed" by all the stations coming back to me, many of whom were on zero beat. Deciphering the calls was extremely difficult so I suspect my settings were not ideal for operating with a pileup.
Does anyone have recommendations for EESDR2 settings in CW to best cope with a pileup?
I mean for example, AGC, filter width, Volume, RF, Nr, Rec. Equalisation etc
73
Ray G3XLG
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CW Contest Sttings 27 Jul 2020 12:03 #2

  • iw7dmh
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Hello Ray,

I think everything is fine. What you described is the tipycal behavior of stations in the pileup, but from the side of the 'wanted' station.
In the scenario you described nothing more than your ears can help you. No filter, no skimmer, no anything else can do it, just your ability.
So the best thing you can do is installing Morserunner and play with it for a while.
You can be sure next time you'll be in a running pileup you'll be able to answer a lot a lot of calls. Fire sure more than this time.
Welcome in the big family of contest maniacs :)

EDIT:anyway you should set AGC fast, passband filter close to 300 if 500 is too much for you, but use Rit for small changes of your rx freq, attenuator may help, also in higher bands.

73 Enzo
iw7dmh
Last Edit: 27 Jul 2020 12:11 by iw7dmh.
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CW Contest Sttings 27 Jul 2020 12:40 #3

  • g0cgl
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  • Erik EI4KF / G0CGL
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It is personal preference gained by experimentation. For example I could not use Enzo's settings. But then I have no natural ability to decode in my head a multi-station pile on almost the same frequency. Hence I use 100Hz filter with the skirts narrowed significantly (RX Filter taps CW = 1000). Then I have AGC on aggressive (shorter timings than Fast) and the 2nd VFO active because it gives (me) finer control than RIT. The purists will hate this: I am always glancing at the SDC Skimmer and CW Skimmer decode windows to see who is calling that I just mis-read or failed to read. Ah well, nobody is perfect....
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CW Contest Sttings 27 Jul 2020 14:40 #4

  • G3XLG
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I found Vasily's recent video on SSB Audio settings in EESDR2 very helpful & have subsequently used his "contest" settings file in the TX Equalisation menus to great effect.

So, I have today asked Roman if Vasily will consider preparing a similar video for recommended CW pileup settings. Lets see if they respond.

I use similar settings to Enzo's except that when Running and trying to decode in my head, I don't seem to have enough time to play with the RIT, which I know is wrong of me. Running in UK Contests like the 80M CC's is quite OK for me (at 20-25wpm) but IOTA was a different ball game entirely!
Last Edit: 27 Jul 2020 14:41 by G3XLG. Reason: Typo
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CW Contest Sttings 27 Jul 2020 15:02 #5

  • iw7dmh
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Hi Erik,

the important thing is to be there, like in the NY Marathon, one do its best, but mostly enjoy itself.
Probably you already know it, but I found that, using the E-Coder, if I enable both the RIT and the DI functions, I can change the RX frequency using the main dial knob.
It is a very handy way to keep fixed the TX frequency and move only the RX.

From Ray I would like to know what is the cw pitch frequency. I set mine at about 500-540 Hz so I can improve my "ear dynamic range". I found that 700Hz makes me loose all the upper frequency stations.

73'
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CW Contest Sttings 27 Jul 2020 15:17 #6

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  • Erik EI4KF / G0CGL
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In my teen years I used 750Hz pitch. In my mid-life years 650Hz pitch. In my grumpy years 550Hz pitch.

I don't use the e-Coder but I take your point. It is the same really as my split VFO - the RIT control is too small to efficiently resolve and decode a fast CW station, for me anyway, especially in a contest where they invariably send a call once.

Equalisation is off in ESDR2 in CW mode.
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CW Contest Sttings 27 Jul 2020 16:07 #7

  • G3XLG
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Well,.... like you two I also use a lower tone of about 540 as I discovered that my ears were no longer correctly hearing higher frequencies - its an age thing I guess!
I do use an E-Coder but only for tuning the main VFO, Enzo that could help so I will set up one of the buttons for RIT & try it.
Ray
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CW Contest Sttings 27 Jul 2020 16:20 #8

  • iw7dmh
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If it can help, below are pictured the two required buttons.
73'

panel.png
Last Edit: 27 Jul 2020 16:21 by iw7dmh.
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CW Contest Sttings 27 Jul 2020 17:31 #9

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Enzo, what is D/I ?
Ray
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CW Contest Sttings 27 Jul 2020 17:50 #10

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It switches the mode (between DDS and IF) the frequency is tuned.
The description from the manual is:

Switch DDS/IF – tuning the frequency by moving the filter over the panorama, in other words changing the digital IF, or when filter stands still and spectrum moves, this is the central frequency tuning.
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