[Elecraft] K3: The ARRL RTTY Round UP

[Guy, K2AV]

Changing SHIFT and WIDTH granularity to 10 Hz from 50 would improve CW
useability as well.  

A lot of us have formed contest operating habits and tactics based on analog
SHIFT and WIDTH functions. Like a combination of a small shift and
(sometimes) a lesser width change to put someone up or down just a bit
farther down the passband and keep the same skirt frequency on the opposite
side of the passband.

73, Guy


wayne burdick wrote:
> 
> All RTTY issues noted, Dave -- thanks.
> 
> Congratulations on your excellent showing!
> 
> Wayne
> N6KR
> 
> On Jan 5, 2009, at 9:00 AM, Dave Hachadorian wrote:
> 
>> 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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>> ---------
>>
>>
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