Sunday, October 30, 2016

Comparing two CW decoding programs.

LY3H CW decoder logic program

MRP40 compared to CW decoder logic by LY3H

MRP40                                                                       CW decoder
1. Decodes all speeds up to 60wpm                            Decodes but not mention top decode speed.
2. Has good documentation                                         No documentation
3. Auto tracking very smooth                                      Auto tracking hunts between long letter spaces
4. Text formatting-format mode works great              Only option is manual or auto decode
5. Will not decode when APF is on                             Will de-code when using APF
6. Great weak signal decode S1 and below                 Poor weak signal de-code (not using APF)
7. Great email support                                                 Upgrades come out regularly
8. See's noise as code sends radium letters                  Only sends letters not radium noise as code
9. Does have save QSO but awkward to use.             Just added cut and paste QSO to word or clipboard
10. Has “always on top” option                                  Just added “always on top” option.
11. Added a mini log book                                          No log book as of yet 
12. You can send code                                                At this time only able to read code                                                     
A more in-depth look at some of the above comparisons:
A)   Auto tracking- When wanting to decode a CW signal it helps when the program can lock onto a signal. MRP40 will lock onto a CW signal and stay locked on. CW decoder on the other hand once the CW signal stops or has long gap between letter the program starts to hunt small segments on either side of the CW signal for other CW signals. Once the code starts again CW decoder has to relock onto it and you lose some decoding. If slow code is sent you are in a battle of lock and relock of the code.
B)   Text formatting options- with MRP40 you have the option on how you want to decode.
- Correct word spacing…..this will attempt to add spacing between decoded words even if sender is running them together.
- Expand abbreviations…..KN, AR and DE to mention a few.
- Expand Q codes…self-explanatory.
        
Both of these programs do the job of decoding CW very well, you have more options and customization option with MRP40. CW decoder logic is very easy to setup and in no time you are decoding CW. I have not had a chance to compare both programs in a CW contest situation. The major drawback to each program is…..

MRP40…….no matter what test formatting option I used the program when idling would send radium code as it listened to static were as CW decoder logic would not.

CW decoder Logic……when the receiving code stopped the program would start “hunting” for other CW signals. This created two issues, the first being if you are decoding slow code I found the program between letters words would start to hunt. When it does this it bounces back and forth from decoding and hunting and your decode is not reliable. The second is if I second CW op appears close to the op you are decoding the program will bounce between the two QSO’s.
The major positive of each program is…..

MRP40…..it will decode CW that is almost down at the noise floor and do a great job of it too.

CW decoder Logic……it will not send random letters when it is not decoding and does a great job of adding the breaks between words and not running them together. Also this program is free.

These code programs will always decode what is sent so you must consider if you are reading odd words and letters it may have to do with poor code sending. CW signals that are close to each other (CW contesting) if your rig cannot filter out the one CW signal your decoder will be confused. CW decoder by LY3H free. MRP40 will cost you 50.00 Euro.
You can download MRP40 HERE and you can download  CW decoder Logic HERE
The picture to the left shows MRP40 trying to decode static. 
The picture to the left shows CW decoder Logic and the nice spacing with very few static decodes.

13 comments:

  1. Nice review, I was planning it as well for my blog as soon as I heard from the new CW decoder. But didn't have enough time. I'm glad you did test it. Hopefully this new decoder will improve. 73, Bas

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    1. Good afternoon Bas, I was already informed a new update to CW decoder logic will be released soon.
      73, Mike

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  2. Interesting review, you can try the cw skimmer also. 73

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    1. I was using Skimmer some years ago with my K3. It did require me to purchase the LP Pan and external sound card. Skimmer worked very well in contests but for a qso it only stores up to 10 words I believe.
      73 and thanks for taking the time to comment.
      Mike

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  3. Nice try. Cw decoder its a very new software, we have to wait for new versions I think. If interested you can try CWdecoder by WD6CNF (free) and CW skimmer. 73 de SV1GRN

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    1. Hello Panagiotis, thanks for stopping by I was just told yesterday that a new version of CW decoder is on the way shortly.
      73, Mike

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  4. Very interesting, indeed! What about a comparison of the build-in decoder of the Kx3/K3. I tried a lot of decoding programs, but the Kx3 decoder together with the CW-Skimmer seemded hard to beat.

    73 de Hajo

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    1. Good afternoon Hajo, that's a great idea and there (on the K3 not sure about KX3) settings you can use to fine tune the decoder. I have the P3 as well and it can be viewed on a large monitor via the SVGA card in the P3. I don't have that setup for the KX3 and I find the code can zip passed you very fast on the KX3's read out. Back to MRP40 and CW decoder logic programs, I wanted to review them as these programs can be used with any rig.
      73, Hajo and I now have something to occupy my spare time with :))

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    2. Hello Michael,

      thanks for the quick reply.
      I think the decoding software for the K3, Kx3 and Kx2 is identical. I use the Kx3 with the Px3 (including four lines of text decode). The only difference between the Kx3 and the Kx2 are the RX Threshold parameter settings, but that could also be triggered by other parameters.

      Have fun

      73 de Hajo

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  5. Uuups, you can use the terminal in the Kx3 Utility software to see the decodings.

    Hajo

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    1. Good evening Hajo I just happen to be writing some replies and I refreshed the browser and there was your comment so I responded right away.
      Mike

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  6. Mike - did you evaluate the free trial version of MRP40 or the full featured $49 one? Are the extra features worth $49 ??

    As you said, CW Decoder is totally free.

    Paul
    kc2nyu

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    Replies
    1. Good evening Paul, I just checked the MRP40 website and the evaluation version is good for 30 days. AT that point the program will stop running unless you purchase it. But having said that give the 30 day trial a shot and it comes full functional as a trial.
      73, Mike

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