Putting several in parallel on a suitable outboard heatsink is not expensive
and, properly rated, will cater for any load. As with semiconductors, the
trick is to not exceed the junction temperature. As always, follow the
manufacturer's recommendations then add your own fiddle factor. MIL
David Gilbert wrote:
juergen piezo wrote:
A 2nd option could also be a dummy load using one of those very cheap
RF film resistors. This would have to be mounted onto the case for a
heatsink.
John
Metal film resistors are notoriously fragile. They will typically meet
their published
As I said, stay below the rated power and they should work fine. When
they go, they don't go gradually, though. They really are simply fuses
on a heat sink.
As far as their RF characteristics is concerned, no argument from me.
73,
Dave AB7E
Ian White GM3SEK wrote:
David Gilbert
-
From: Bob Maser bmas...@q.com
To: elecraft@mailman.qth.net; DOUGLAS ZWIEBEL doug...@gmail.com
Sent: Thursday, October 29, 2009 12:06 PM
Subject: Re: [Elecraft] K3 - CQWW SSB Observations - R U kidding?
Doug, I was very happy to read you analysis of the K3 radio. I have mine
on
order
On Sat, Oct 31, 2009 at 7:11 AM, David Y. w7...@cox.net wrote:
It reminds me of the
domination that Collins seemed to have in the 60's. Not everyone had one,
but most people wanted one!
Dave W7AQK
Dave:
But the big difference is that while most everybody wanted Collins,
very few could
At 05:45 AM 31/10/09, you wrote:
. For example, I have resonant
antennas, so no Antenna tuner here.
de Doug KR2Q
Hi Doug,
I did opt for the tuner here, even though my antennas are resonant. I
did so to have the ant1/2 option. I made a (wish list) suggestion to
Elecraft for a module, to
used the tuner.
AD4C
For a refined ham it is compulsory to own a k3
--- On Sat, 10/31/09, John k...@hughes.net wrote:
From: John k...@hughes.net
Subject: Re: [Elecraft] K3 - CQWW SSB Observations - R U kidding?
To: elecraft@mailman.qth.net
Date: Saturday, October 31, 2009, 3:22 PM
At 05
to be mounted onto the case for a heatsink.
John
--- On Sat, 10/31/09, Hector Padron ad4c2...@yahoo.com wrote:
From: Hector Padron ad4c2...@yahoo.com
Subject: Re: [Elecraft] K3 - CQWW SSB Observations - R U kidding?
To: elecraft@mailman.qth.net
Date: Saturday, October 31, 2009, 2:34 PM
Thst's
Metal film resistors are notoriously fragile. They will typically meet
their published dissipation specs just fine, but they go from being OK
to being an open in a flash (literally) when overstressed. I personally
would never use one in any application where the power they were
expected to
Dave,
I can vouch for that statement. I do use the Caddock Thick Film 50 ohm
resistors as precision dummy loads. They are flat up to 500 MHz with
good mounting using no leads. They MUST be mounted on a heat sink, and
yes, they will go open in a flash if the rated power is exceeded (don't
to operate a K3 then he will not be able
to operate any other modern radio,73
AD4C
For a refined ham it is compulsory to own a k3
--- On Thu, 10/29/09, ab2tc ab...@arrl.net wrote:
From: ab2tc ab...@arrl.net
Subject: Re: [Elecraft] K3 - CQWW SSB Observations - R U kidding?
To: elecraft
S!
You forgot varying the filter width ;o)
Just received two certificates from CQ160, second place US SO-LP (10th
World) on CW (damn you ice storms! Congrats to WA1Z!) and 5th in the US SOLP
SSB (shoulda put the time in)
Both with K3s, not to mention 1st SOLP in ARRL160. K2 managed to get
Julius Fazekas n2wn wrote:
Watch what the topbanders are using... you'll see many K3s... same for
DXpeditions.
A most welcome change from all those clicking Yaesu rigs. Also from the
Flex 5000's +/-2.4 kHz spurs (~ 58 dB down on 160 which will cover even
strong DX signals like DF2PY,
Hector wrote...
This K3 is not only not complicated to operate ...
snip
The complicated bad rap is almost surely the result of people watching this
reflector. Things like:
Firmware beta version 5.555.001 allows the setting of macros to turn on your
coffeemaker at a user-programmed
Rumor has it (second hand) that some Contesters are now shying away
from the K3 due to it's complexity, but not necessarily it's performance. As
a
relatively experienced owner I had no problem running what I consider to be
excellent radio. I've owned or operated most of the modern rigs
During the last CQWW SSB we had my K3 aside with two 756 pro III's and an
FT2000 at PI4D.
All operators agreed that it was very easy to operate the K3 and that it was
not the most handsome of the three but nobody cared. All eyes were on the
N1MM screen and the hands on the keyboard.
Excellent
The K3 is as simple or complex as you want to make it. I have a pair
of K3s (and still a K2) and I contest 99% of the time I'm on the
radio. Honestly, I hardly ever touch anything other than the tuning
knob. I think many folks using other radios NEED to play with the
knobs because of the
is complicated at all.
Bob W6TR Fort Collins, CO
- Original Message -
From: DOUGLAS ZWIEBEL doug...@gmail.com
To: Elecraft Reflector elecraft@mailman.qth.net
Sent: Thursday, October 29, 2009 11:46 AM
Subject: [Elecraft] K3 - CQWW SSB Observations - R U kidding?
The K3 is as simple or complex
Hello,
I also found Doug's posting refreshing. Reading the posts on the reflector,
it's very easy to get the impression that the K3 is complex and
intidimidating to operate. Nothing could be farther from the truth. I
upgraded from the simple, entry level IC-718 and find that I operate the
K3
Doug,
Did you have to let the secret out? Rats! Lets try to keep this quiet...ok?
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
Re-send of yesterday's AM email ending this thread..
Please, lets end the CW speed thread now.
73, Eric WA6HHQ
Elecraft List Moderator (really!)
--
Eric Swartz - WA6HHQ, Elecraft wrote:
Lots of good info in this thread regarding CW speed, but its time to
put it to rest for now. We're
Dave Agsten wrote:
Speaking of those ultra high speed CW stations, I have to wonder if they
are in a radio contest or a computer contest? Isn't the computer doing
most of the operating. I don't know, since having the PC run the show, as
far as contest exchanges are concerned, is of
Dave,
The premise that nobody can copy high speed CW is simply false.
The RUFZ contest simulator shows that hundreds of contest stations are
able to pull out call signs at over 50 wpm. The top guy does this at
160 WPM. See: http://www.sk3bg.se/contest/rufztop.htm
In many contests the
Back in the 90's my CW skills were better. There was an on the air
test for copy and I was able to get the cert for 40 WPM. I could copy
a tad faster but comprehension went way down quickly at 45 WPM. Life
got in the way since then and sans antennas, I've spent much less
time on the air till
Lots of good info in this thread regarding CW speed, but its time to put
it to rest for now. We're beating it to death.
(But let's keep those other K3 CQWW reports coming! :-)
73, Eric WA6HHQ
Elecraft List Moderator
Gary Smith wrote:
Back in the 90's my CW skills were better.
Hi Tom,
Me too. Whilst running on 20m I received QRL QSY V26B 1 up. I did apologise
and QSY'd immediately. I felt bad about this and kicked myself for not
marking my band map - I must use this feature more. The last thing I want to
do is to make it difficult for the contest expeditions or 'rare'
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