The fact that you still get maximum power output indicates that the
base PA transistors are still OK, but do not push that situation too
long or you will have to replace those PA transistors in addition to
the KPA100 wattmeter diodes.
73,
Don W3FPR
On 5/12/2014 9:01 PM, Dave Mueller wro
My K2/100 has been working fine for a few years. Last weekend, I was
greeted by a HI CUR alarm when I first keyed down.
After some troubleshooting, here's what I've found:
If I remove the KPA100, the power control changes output power as
expected, and the power bar graph works to full scale.
Wi
I believe if you look very carefully, there is a slight size difference. I
think two of the chokes have the same value, but there's a note somewhere that
you put the larger one in a particular place. Easy to do when they're
different colors. One of the two went on the bottom of the board. I
Radio Shack used to sell a small 1A linear supply in a metal chassis.
Wall mount supplies are linear if they're heavy, but usually not regulated. 12VDC at 1A is a pretty
common size.
Dave AA4EE
K2 #5929
Jeff wrote:
Hi gang,
Where can I buy a good quality LINEAR power supply that will provid
I was able to read it this morning, but I think I beat the webmaster so I had
to cut/paste the URL into my browser. If your kit is like mine, all you need
to do is swap the non-ground leads on the jack. I'm actually glad this came
out as an alert since my external speaker didn't work on the fi
First, kudos to Eric, Wayne and everyone at Elecraft for an amazing product. I hope I enjoy using
the K2 as much as I did building it. My New Year's resolution is to try and finish my WAS, I'd like
to use the K2 and a straight key as much as possible.
K2 SN 5929 passed Alignment Part III Sund
The latest copy of the spec I had was EIA-232-F. It did not specify the 8 pin
modular connector. EIA-561 covers the 8 position modular plug when using it in
an EIA-232 compatible system. RJ-45 (Registered Jack) is defined in FCC part
68 and is a whole other ball of wax!
Dave AA3EE
>From: Ja
Don et al,
For my previous job, I had copies of all of the EIA and RS specifications for
serial interfaces.
The original RS232 specs call for the 25 pin connector (DB25). The current
version (-E or -F I think) also introduces the high density 26 connector (looks
like SCSI-2, but that's whole
Hi,
I'm going to be building a power supply for a K2. I have two choices for regulators from the junk
box: an LM338, T03 5A adjustable regulator, and a complete PCB based on the LM723 with external
pass transistors. I have a torodial transormer that can supply 3A continous.
I'd like to use
It's been a while since I've built anything, so I'm starting small with the accessory boards for the
K2. I finished the KIO2 and AUX2 boards and am getting ready to prepare the connecting cable. I
have a bunch of 43 and 73 mix ferrite beads that I use in all of my RS232 cables. I've read a few
DEMI has a zipped PowerPoint presentation entitled "Interfacing Transverters
with the Elecraft K2 Transceiver".
http://www.downeastmicrowave.com/K2.zip
I don't have a PP viewer installed to look at it, so I'm not sure if this is a
"better" solution than tying the TX and RX paths together in the
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