Re: [Elecraft] K3 Attenuation on Receive of 20 meter band onlyproblem.

2013-03-03 Thread Cady, Fred
Hi,
The data mode is saved per band so when contesting it's a good idea when
setting up to run through all the bands making sure the mode is the same
on each band.
Cheers and 73,
Fred


Fred Cady
The Elecraft K3: Design, Configuration and Operation Second Edition
www.ke7x.com

fcady at ieee dot org 

 -Original Message-
 From: elecraft-boun...@mailman.qth.net [mailto:elecraft-
 boun...@mailman.qth.net] On Behalf Of Bill Frantz
 Sent: Sunday, March 03, 2013 12:34 PM
 To: Elecraft@mailman.qth.net
 Subject: Re: [Elecraft] K3 Attenuation on Receive of 20 meter band
 onlyproblem.
 
 In the NAQP RTTY contest I had a similar issue. My computer was
 decoding RTTY quite fine on every band but 15 meters. The first
 time I tuned a station on 15, the tuning indicator was right and
 the station was strong, but no decode. At least I knew that
 RTTY, unlike PSK, isn't symmetric. I turned on Reverse in the
 computer software and got decode. OK, it worked. I didn't try to
 find out why until later.
 
 What I found was that the K3 was in Data A mode on 80, 40, 20,
 and 10 and in AFSK A on 15. For some reason the K3 was using
 different side bands in the two modes. Reading the manual, AFSK
 A is probably a better mode for that contest because of the
 duel-tone RTTY filter.
 
 I never did get the K3's RTTY decode to work for me. However
 decoding on the computer is an advantage because I can copy
 calls directly to the logging program and my dyslexia doesn't
 have a chance to swap the letters. :-)
 
 Cheers - Bill, AE6JV
 
 On 3/3/13 at 9:13 AM, k6limae...@gmail.com (Rick Prather) wrote:
 
 Lots of interesting options on the radio that are band
 specific.  Sometimes it's hard to keep track of but I bet you
 won't miss this one next time.  I know it's the first thing I
 check after missing it once!
 

---
 
 Bill Frantz|We used to quip that password is the most
common
 408-356-8506   | password. Now it's 'password1.' Who said
 users haven't
 www.pwpconsult.com | learned anything about security? -- Bruce
 Schneier
 
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Re: [Elecraft] K3 Attenuation on Receive of 20 meter band onlyproblem.

2013-03-03 Thread Ian White
The data mode is saved per band so when contesting it's a good idea
when
setting up to run through all the bands making sure the mode is the
same
on each band.
Cheers and 73,
Fred


Agreed - this is a must do for anyone who uses other data sub-modes
outside of contests. 

But if you switch to a band where a different data sub-mode has been
selected, you will find that the IF passband settings have *not* been
saved. The passband settings that you get will be pot-luck (saved from
whichever data sub-mode was last used, on any band) and will probably be
quite inappropriate.

Please could this be fixed in a future firmware revision, so that the
last used passband settings are saved per-band for each of the data
sub-modes? 


73 from Ian GM3SEK


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