[Elecraft] K3: The ARRL RTTY Round UP

[Dave Hachadorian]

My pair of K3's also worked well in the RTTY Roundup - 1800 
qso's. There are only a couple of issues that I saw:

1. On each transition between mark/space, there is a brief 
upward power excursion. One of my amplifiers has an LED 
wattmeter, and one of the LED's was blinking like crazy. 
Also, the screen current on that amp was varying 
significantly. I've complained about this in the past. 
Elecraft is supposed to be working on it.

2. When you reduce the DSP bandwidth to 300 Hz, it is not 
possible for me to get the audio output exactly centered 
between the RTTY modem's mark and space detector. The SHIFT 
control is too coarse. One click of the SHIFT control moves 
the audio either slightly left of center, or slightly right 
of center. It would be nice if there were a "fine mode" 
setting for the SHIFT control.

I can live with both of these issues, but fixing them would 
make this rig absolutely perfect for RTTY, at least for me.

Dave Hachadorian, K6LL
Yuma, AZ


----- Original Message ----- 
From: "Lee Buller" <k0wa at swbell.net>
To: "Elecraft Reflector" <elecraft at mailman.qth.net>
Sent: Monday, January 05, 2009 2:56 PM
Subject: [Elecraft] K3: The ARRL RTTY Round UP



Ladies and Gents....

I just about cleared a thousand Qs this weekend in the RU in 
only 17 hours of on-the-air time. The K3 was spectacular in 
performance. The RX is magnificent and copied signals that I 
could not hear out of the speaker but printed on the screen. 
This happened many times. From Kansas, I did get to work 
some deep Europeans and even Israel called me. I did not 
hear any Russian stations at all. The DX was weak but 
workable. Magnificent RX. The TX was healthing and robust. I 
was running my amp so I was only running about 60 watts or 
less. The TX stayed cool and stable.

The only issue I noticed was that between Dual PB on and 
off...the power would drop about 200 watts. No big deal, but 
interesting phenomonon. With the Dual PB on...the power 
would drop...with it off...the power would return to normal. 
Wayne and Eric already know about this issue.

Thanks to all who worked me. Fun contest.

Lee - K0WA


In our day and age it seems that Common Sense is in short 
supply.  If you don't have any Common Sense - get some 
Common Sense and use it.  If you can't find any Common 
Sense, ask for help from somebody who has some Common Sense. 
Is Common Sense divine?


--------------------------------------------------------------------------------


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