After doing a bit of looking I think the very low THD numbers on these
is also a big benefit. I've since looking ordered a set for Field
Day.
~Brett (N7MG) (Previously KC7OTG)
On Fri, May 28, 2010 at 2:09 PM, Joe Subich, W4TV li...@subich.com wrote:
The graph shows some interesting data for
All of this backs up comments I made on this list a year or so ago, and at
that time hardly anyone agreed with me!
It seems pretty clear that the early fans were indeed silent, certainly the
same cannot be said of the UTEC ones in my #980. Gary kindly even sent me
some more but the difference
Hi all,
The Elecraft Net will run as usual from 0900 BST on 3658 +/- QRM. I hope to
see you there.
73 Ian
--
Ian J Maude, G0VGS
SysOp GB7MBC HB9DRV-9 DX Clusters
Member RSGB, GQRP 9838, FISTS 14077 | K3 #455
http://www.amateurradiotraining.org
It seems pretty clear that the early fans were indeed
silent, certainly the
same cannot be said of the UTEC ones in my #980. Gary
kindly even sent me
some more but the difference was negligible. I have spent
a lot of time on
this, even mounting the fan panel on rubber bushes - all
to
On 5/28/2010 3:26 PM, drewko wrote:
The funny thing with the K3 AFX is I can't decide if it sounds better
or not. It sounds better when I switch it on. Then it sounds better
again when I switch it off...
Probably too much di-dah di-dah in the noise has ruined my ear to
synthesized spatial
You can download a pretty good spl meter for the iphone through the App Store.
It is free and works well. Search for sound meter at the App Store.
I downloaded it at a rock concert with a friend's kids -- went immediately to
the drug store and bought ear plugs.
73 de W6BK
On May 29, 2010,
Clint,
I had a similar issue with the 3.97 Beta firmware, but in my case only the
DSP2 wouldn't take. It kept indicating that 2.58 DSP2 load had failed and noted
that DSP2 vers.2.54 was still installed. I tried a number of times with the same
result. Finally I powered down the K3. When I turned
Hi Folks,
I am now confused..my K2 serial no 1926 from 2001 has T7 having 20turns / 5
turns.
I just checked the latest manual and the turns are the same. Are we sure
it's T7 we are talking about ?
73, Vic GW4JUN
That is a very old mod (2003) and was one of the experimental
Vic,
Yes, it is that T7, and you have the current winding ratio. Some of the
earlier K2s used a 13 to 4 turns ratio - I am not certain when the
cut-over was made, but I believe it was in the low 1000 SN range.
Many of these early K2s have already been changed - I have done several
myself
Hi all,
I'm experiencing the dreaded PC Speaker hum every time my K2 transmits, even
when power is dropped to about 2 W.
The speakers are Harmon Kardon amplified speakers and they do not hum when
turned off. Per other threads, I plugged the speakers' wall wart into the
same outlet as the K2
That assumes that the airflow is the predominant source of noise. In
my case, the airflow noise is secondary to what I believe is bearing
noise. At low speeds, this motor noise is what I hear mostly. It
is the same across 2 sets of UTEC fans.
I've posted a recording of my K3 fans at
The level on your recording is so low I can barely hear it
Joe, and it also will not display on my spectrum analyzer
software.
What I do hear sounds exactly like what I described below,
where I am talking about something being too close to the
blade tips. It does not sound like bearing noise
Hi Brian,
It's a more costly solution, but I ... and others ... swear
by the COMspkr(s) from West Mountain Radio. They
work well, and even sound pretty good when listening
internet radio stations.
73! Ken Kopp - K0PP
elecraftcov...@rfwave.net
I use COM speakers with my R5000 receiver and they sound great. Use better
hifi speakers through an amplifier with my K3. Mounted on the wall and
pointing at me. Such a pleasure to use for SSB and general coverage.
Phil
Philip LaMarche
LaMarche Enterprises, Inc
Almost any commodity computer speakers can be cleaned up
by adding a simple bypass cap across each of the speaker
leads. The most difficult cases respond to a basic pi-
section filter at each speaker output and on each input
channel.
I cleaned up all of my computer speakers by adding a .01
or
Good Afternoon,
I am not sure how big a contest WPX is this year but if I can find a spot I
will call the twenty meter net. If I cannot find a clear frequency then wait
around for the forty meter net. The sun is coming alive plus the ionosphere
has taken the seasonal dip allowing a solar
I use the Toyko Hy-Power 1.2KFX without ALC and my QRP K3. I can't overdrive
the amplifier and it works just great. My HL1.2 KFX is modified. I removed the
input attenuator from the HL1.2KFX so my 12 watts gives me 600 watts typical.
Remember, ALC feedback takes time, so the amplifier chain
On May 22, 2010, at 11:25 AM, Phillip Shepard ph...@rio.com wrote:
Hi guys,
The weekly SSB net will meet tomorrow (5/23) at 1800z on 14.314 MHz.
I will
be net control from western Oregon. We'll try to pull in other NW
stations
that I can't hear. See you there.
73,
Phil NS7P
Hi gang,
The weekly Elecraft SSB net will meet tomorrow (5/30) at 1800z on
14.314 MHz. I will be net control from western Oregon. See you there.
73,
Phil
NS7P
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OK here are the recommendations I received
I'm missing some of the data, but here is what I have found:
K3 front jack is 32 ohm output
rear speaker is 4-8 ohm
rear phone is 16 ohm
HD280 Pro ~$60-80
64 ohm /10' coiled cord /3.5 jack w/.25 adapter/ 500mw/ 7.8oz/ SPL 102db
Yamaha CM500 w/Mic ~$50
A gentleman who used to sell for Bose told me that Mr. Bose knew about
advertising, but knew little about engineering. He did manage to put a
lot of excessive bass into a small box, but that seems to be his major
accomplishment - unfortunately, many people are impressed by that. I
prefer the
Is this fan noise an issue with 10W K3s, or only with the 100w PAs? I
expect to be able to purchase a 10W K3 sometime this fall, and I'd be
disappointed if I had to listen to the fan...
73, Ross N4RP
--
FCC Section 97.313(a) “At all times, an amateur station must use the minimum
transmitter
Is this fan noise an issue with 10W K3s, or only with the 100w PAs?
The 10W radio has no fan.
73,
Lyl eKK7P
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Post:
K3 front jack is 32 ohm output
rear speaker is 4-8 ohm
rear phone is 16 ohm
Front and rear headphone jacks are identical in electrical performance.
They can handle headphones of a wide range of impedances.
73,
Lyle KK7P
__
I assembled today a brand new K3 (S/N 4193, the newest firmware).
Performed synthesizer calibration and filter setup (only 2.8kHz i
position FL1).
Got IF1 ERR message. The rig is in minimal configuration. The owner's
manual says
De-install the KNB3 (the error message disappears but the radio is
I just did a bit of researching and considered many of these models and
ended up getting the Sony MDR-V6 based on reviews but a big
consideration for me was the THD plot on when compared to other
products. I also ordered the Beyerdynamic velour replacement pads for
their headphones that also fits
I worked for a company that made the Bose Pro audio equipment.
Essentially their pro audio rack mount stuff was fairly decent (actually
it was only our product rebranded).
But we always felt that BOSE stood for Bring Other Sound Equipment or
we'd say No highs no lows it must be Bose.
It was
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