At my best, I could copy 45 wpm conversational cw, but for code groups I 
dropped off rapidly at around 28 wpm.  It was like I did great up to around 
27 wpm, and then it went down hill rapidly!
--
Jim, ke5al
-----Original Message----- 
From: Mike Duke, K5XU
Sent: Saturday, November 14, 2015 10:38 AM
To: [log in to unmask]
Subject: Re: Code groups

Richard,

Code groups are random groups of letters, numbers, or a combinations of
both. Each group usually, but not always, contains five characters.

The set of records that I learned CW from in 1968 used code groups,
rather than words, for their lessons. Initially, at least, that made it
hard to second guess which letter was coming next. Even now, copying
random code groups will separate the men from the boys, especially at
higher speeds.

The intruder that I mentioned was transmitting CW, but there have been
similar stations that transmitted using either SSB or AM. Most of the
voice transmissions were number groups, but I have encountered a few
letter group voice transmitions as well.

If you are interested in these transmissions, take a look at
www.numbers-stations.com.

-- 
Mike Duke, K5XU 


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