Hi Bob, that looks like a dandy solid state amp! With all the Value
Added Taxes in your countries now how much does the amp cost in Pounds?
Since the Dollar is lagging the Euro it will be over $3000.00 without
the VAT.
73 Karl K5DI
Bob Jones wrote:
Hello Jean-Francois
I suggest you take
I am getting ready to build my KPA100 and am a bit concerned about the fan
noise, after hearing recent comments here. There are many fans out there for
PCs, and some of the newer ones are fairly quiet. Isn't there a specific
alternative cheap fan that can be used, if the stock one is so noisy?
To All,
Though there is some mention about tightening the screws that mount the final
power transistors in the manual, it can be easily missed.
When I first built the KPA100 I made sure the transistor hear sink mounting
screws were tight. After operating the rig for about a week (and heat
Dave,
It is correct that the re-tightening be done after the initial assembly
(after 10 to 20 hours of transmit operation). It should also be done after
the thermal pads are changed.
It should only have to be done once. It takes both time and temperature for
the pads to conform to all the
Agree. Not even near a problem here
--Bob, W1XT
Surprise, AZ
- Original Message -
From: Craig Rairdin [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Thursday, January 25, 2007 7:13 AM
Subject: RE: [Elecraft] K2 Quiet cooling
It's a fan. You can hear it. It's
Tom,
I guess everyones threshold of dislike is different. The KPA100 fan is
relatively quiet to my ears. The sound from the air flowing from the
heating vent overhead in my shack is noisier than the KPA100 fan (even at
high speed). Your mileage may vary.
If you find the fan too loud for your
Don,
Thanks for the intelligent response. I heard a lot of complaining about the
nooise, but little or no comments that it is not a problem. I don't operate
many hours, but my main interest is contesting, so I will be hitting the KPA100
hard when I use it. I will use the stock fan, and the
I ran my FT817 for half of the NAQCC 160m sprint last night and the K2 for
the other half. I love my Yaesu for its versatility on all bands, but the K2
was clearly the winner in terms of quietness on reception, soemthing often
critical on 160. I was using a 1/4-wave wire at 12 feet or so,
Just to mention that the XV50 is now sold.
*** XV50 + CRYSTAL OVEN *** SOLD
Excellent construction, excellent working condition and excellent
cosmetic. Kit was bought last autumn 2006 and built by myself.
Brand new today: 414$ USD + shipping. I'm asking 325$ USD + shipping
in US (conus) or
Tom:
I've been using a K2/KPA100 for about a year. The fan is audible, but
not distracting.
My specific recommendation is simply to use the rig as originally
configured by Elecraft.
73,
Steve Kercel
AA4AK
At 01:56 PM 1/25/2007, Tom Zeltwanger wrote:
I am getting ready to build my
Don't forget too that the position of the KPA100 has a lot to do with the
apparent loudness of the fan. A fan facing an acoustically reflective wall
will sound louder than the same fan in the middle of a room. That fact may
account for some of the variation in responses to the 'fan noise'
[Gregg R. Lengling] I think the whole fan noise thing is being overplayed.
I've had my KPA100 for a number of years now and really never notice it.
Case in point: I did some computer changes and then I started doing some
Beta Testing on a new Digital Mode Software Program (DM780 by Simon Brown
My K2 #5628 has the SSB option installed. Fine carrier
balanced completed. Many contacts made on SSB with the
K2 with good audio reports. No carrier can be heard
and audio sounds good.
The following settings were done: power set to minimum
- ccw, mic gain (SSBA) set to 3, speech compressor
Tom,
My KPA100 fan's noise has never been a problem even during contests, the fan
is *very* quiet.
73,
Geoff
GM4ESD
- Original Message -
From: Tom Zeltwanger [EMAIL PROTECTED]
Don,
Thanks for the intelligent response. I heard a lot of complaining about
the
nooise, but little
Tom, I *HATE* fan sounds, but let's keep this in perspective. Several people
have made excellent qualitative comments about the fan. I agree with them. I
tend to deal in numbers. So I got out my sound level meter and plunked it on
the operating desk in front of my K2/100. At high speed the K2/100
Can someone assist me in hooking up this to mic input?Do I get another new
mic connector and put a pin on back side of plug at mic input and go from
there?Learning how to use this device. Tnx
--
No virus found in this outgoing message.
Checked by AVG Free Edition.
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W H O ??
ted wrote:
Can someone assist me in hooking up this to mic input?Do I get another new
mic connector and put a pin on back side of plug at mic input and go from
there?Learning how to use this device. Tnx
___
Elecraft mailing list
You must know which pin you have connected the AF signal to at the
microphone configuration header. Perhaps your KSB2 manual and your mic type
will help you recall - for the Elecraft mics (and Kenwood) that will be pin
1. Similarly, you must also know which mic jack pins are connected to
ground
Tom:
I have only the QRP K2 and have no experience with KPA100 fan noise.
But my recommendation to you is to first build the thing stock before
you start thinking about modifying it. In other words, don't try to
solve a problem that might not be a problem to start with. If you build
it
Larry Makoski W2LJ wrote:
This Wednesday evening (Thursday morning UTC time) the NAQCC will be
hosting a 160 Meter Sprint - great news for all you fans of the Top
Band!
Hi Larry,
Not much of an antenna for 160 m here, and very noisy, but I did work
Andy, KD0EH. The start time was a bit
Hey Folks, what's the approximate build time on a KPA100 compared to a
K2? I just finished K2 #5945 and am antsy to get the KPA100 on the air
;)
Also, wondering about the KDSP2 (looks quick) and KNB2 (also looks quick).
Thanks,
-J
___
Elecraft
J,
You will likely find the KPA100 build time about 1/2 ot that required for
the K2.
73,
Don W3FPR
-Original Message-
Hey Folks, what's the approximate build time on a KPA100 compared to a
K2? I just finished K2 #5945 and am antsy to get the KPA100 on the air
;)
Also, wondering
Item sold, thanks !
*** KAT100 + KPA100 in EC2 enclosure ***
Excellent construction, excellent working condition
and very good =20
cosmetic. Kit was bought last autumn 2006 and built by
myself.
KPA100 firmware version 1.09
Brand new today: 667$ USD + shipping. I'm asking 525$
USD + shiping
I have K2 #5439 that I would like to sale. The K2 has the following
options;
KNB2 noise blanker
KSB2 SSB option
K160RX 160M / RX antenna
KAF2 Audio Filter Real Time Clock
KPA100 100 Watt PA
KAT100-1 150 Watt ATU
The radio and all accessories were very carefully built and all work great
with
During a snow squall this evening I thought I'd warm myself up with a
little CW. I tuned around on 40m, found a nice empty spot at 7.025 MHz
and hit tune. The KAT100 showed red leds which is unusual, started
grinding away, and then...bzzt, pop! Smoke was pouring out of my K2. :-O
Photos
Fellow Elecrafters--
I've gone and done something to K2/100 #5023.
Symptom: rig won't turn on. Heat detected atop heat sink with Samlex
power supply cable attached. Hum from power supply after attaching the
power cable to the K2. Normal voltage detected at the end of the power
supply
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