The torque spec is called out in the manual. Why not use a torque wrench?
Can we please not resurrect the KPA500 hum thread already beat to death
multiple times years ago? Or does everyone need to chime in yet again?
55 inch-pounds.
73 Eric WD6DBM
On Mon, Oct 19, 2020, 9:15 PM Bert wrote:
>
If you leave it "on," the power supply is energized. A surge on the
line could fry the unit. It happened to me with a Yaesu Quadra.
k4ia, Buck
K3s# 11497
Honor Roll 8B DXCC
EasyWayHamBooks.com
On 10/20/2020 12:16 AM, Jack W9JH wrote:
Is there any harm in leaving the KPA500 rear MAIN Power
Is there any harm in leaving the KPA500 rear MAIN Power Switch ‘ON', 24/7/365?
(not the front panel power button).
I have done that with my KPA500 at the home station with no problem, but
wondered about doing it at the remote site? I can operate the front panel “ON”
button and “OPER/STBY”
Toroidal transformers cause very little acoustic hum, unless the core
is not tightly wound or the copper wire windings are loose!
If you have to tighten the mounting bolt with a torque wrench
to get the transformer quiet, something is wrong!
Bert VE3NR
On 2020-10-19 19:59, Jim Spikes N4KH
Even the 'normal' hum was too much my tastes. My KPA500 is now on the floor,
under the desk with a remote digital readout on the desk.
John K7FD
> On Oct 19, 2020, at 6:25 PM, Eric Norris wrote:
>
> When the KPA500 first came out, there were lots of complaints about hum.
> This made it
When the KPA500 first came out, there were lots of complaints about hum.
This made it difficult for Elecraft Support to differentiate between normal
hum, which I can barely hear, to the obnoxiously loud hum of a misaligned
transformer. I finally called support so they could hear the hum of my
Hi Jim,
I had a bad hum from my KPA500 kit, an early model. Elecraft sent me a new
center bolt that was only threaded on the end--the original bolt had
threads all along the shaft. Also an additional pad.
Assuming you assembled it all correctly, try these two things: If you have
a torque
"If anybody has any lessons learned I would appreciate hearing them."
I built a KPA500 kit and I too was bothered by the transformer hum. I learned
that Elecraft has used several different transformer suppliers and that
transformer sizes vary. This means the clearances between the transformer
I don't see the problem. I presume you bought a kit to assemble it
yourself. You simply reverse part of the assembly procedure, then
re-assemble it. I've assembled several KPA500s and I'd bet that you
didn't quite get it right first time. There's no shame in that. This is
a risk you take with
Looking for details from anyone who resolved issues with excessive
transformer hum during transmit on a KPA-500.
I have a hum mitigation application note sent from Elecraft tech support.
But the procedure recommended is pretty involved - removing front/side
panels, un-plugging connections,
A Google search for Elecraft K2 Software gets a lot of hits.
I only listed the ones from the Elecraft Site
https://elecraft.com/pages/k3-k3s-kx3-and-k2-control-setup-programs
https://elecraft.com/pages/k2-remote-k2-voice-program-downloads-and-instructions
Ray,
I don't know about any software, but the latest firmware is available -
the most recent is MCU 2.04, IOC 1.09 They must go together - order as
FWK2MCIO. If you have trouble finding it on the website, just email
sa...@elecraft.com to order.
To find your currently installed K2 firmware
I can't find the link to the last versions of firmware & software for the
K2.
I know it was some years ago, but thought it would still be available on the
Elecraft site.
Does anybody have a link or can tell me the Version numbers?
73 Ray G3XLG
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Good day, the P3 that I offered for sale yesterday has been sold. 73, Doug N7QS
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Dennis,
The K3's BCD outputs are defined by band, not frequency. You need something
that tracks QRG, but the following may be serious overkill for your needs...
If you use the general purpose logger DXLabs, or the contest logger N1MM,
consider a freeware Band Decoder called FreqEZ. The
I have a PR6 6m preamp surplus to my needs.
With the two BNC-BNC connectors.
$60 includes shipping within CONUS.
73,
Eric W3DQ
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Help:
The Elecraft lovers Zoom meets on Sundays at 2000 UTC.
We discuss Elecraft stuff of course (K4!!) and lots of other things of interest
(computers, propagation, sailing, fires, weather, etc., etc., etc.)
Some recent attendees: K8NU, WB9JNZ, WM6P, KB9AVO, NC0JW, W4DML, WY3T, NS7P,
N8SBE, K1NW,
Thanks to all who assisted me. I opened the rig and it turned out the filter
offsets on the top panel label had the incorrect offsets. Taking a look at the
filters I found the real offsets, entered them in the Configuration and that
was the solution.
Vy 73 de Bob DJ0RD/WU5T
I am selling this K3S/10 which I used to drive a 2m transverter during my
EME adventure. Here are the particulars:
K3S/10 - F s/n 118xx
K144XV-F
K144RFLK-F
K3EXREF-F
KFL3A 2.8 2.7 swap
Accessories included:
Pro Audio Engineering power
I am selling this K3S/10 which I used to drive a 2m transverter during my
EME adventure. Here are the particulars:
K3S/10 - F s/n 118xx
K144XV-F
K144RFLK-F
K3EXREF-F
KFL3A 2.8 2.7 swap
This radio was put in service in April 2019 and is now surplus to my
Ben, The process I use is to first clear all the tuner settings on the
band I'm using. I go to STBY and hit ATU TUNE. Low power is applied to
start the search. When I first got the amp I did this when in OPER, but
even with low drive power I kept getting faults due to initially high
SWR.
Jim,
What were the actions taken before you performed the re-training. Did you
CLEAR all of the ‘bins’?
Ben W4SC.
Sent from Mail for Windows 10
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Help:
I did an initial test of this headset yesterday and found that the audio
quality was good, but there was some background hiss. It could have been
because the headset was not properly powered, since I have it plugged in to
my mixer with phantom to 2.5v jerry rigged. I have a proper adapter coming
Frank,
Check the idling current: it should be 2 amps (keyed with no drive).
Gud luck, Roy K6XK
My KPA1500 just started needing a lot more drive (2X) to get 'normal'
output. I normally need 25-30 watts drive to get ~1k out. Now I need
about 60W. I get two kinds of alarms, depending on
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