W3FPR replied to N2DH:
The allen wrench size for the FT-100 knob is metric and as I recall it is
2mm, I could be wrong (blame fuzzy memory), but it is very close to that
size - I do know 2.5 mm is too big.
Yes - 1.5 mm.
73, VR2BrettGraham
___
NZ0R added:
You only have to report callsigns on each band. So if you really want to
compact it, drop time and exchg, don't mix bands on one page, and record
only callsigns. IOW, a well-designed dupe sheet is sufficient.
That technique proved problematic not too long after WPX
got interesting
I have completed building KX1 # 00920. All tests were as per factory spec;
the built in paddles work great, and I am about half way done with the KXAT1
automatic tuner board. So far this has been a very straight forward kit,
easier than the K2 was.
I plan to take it tomorrow to field day,
Hopefully one of the many cw ops here might have one for sale ..
Looking for a Peter Jones Two Paddle Iambic Key. Looks not as important as
functionality. This is to use not sit in a collection; If you have one for
sale, please send details such as condition, and price shipped to zip 45324.
Bill,
There was an article in QST July 2004 called Remote DC Power through your
coax by
Phil Salas, AD5X that may be of use.
I'm sure someone here who has the annual QST cd, will oblige in due course, if
you're
interested.
73
Trevor G0KTN
___
Kevin sez:
snip
However, I started with wire wrapped boards and assembly language quite a
long time ago.
/snip
That must have been nice!
I was a Motorcycle mechanic in 1976, and the local Radio Shack dealer had a
Trash-80 in the window (Wow! 4K of RAM).
Anyhow, his boat sunk (in Salt Water)
About a year ago, I installed my KPA-100 in an enclosure with KAT-100.
Built a KIO2 for the QRP K2. Everything worked great for a while. KIO2
quit working. Did lots of troubleshooting with advice from list but was not
able to solve problem. Put KPA-100 back in K2 my entire software worked
Actually, silver bearing solder has a lower melting temperature than 63/37
tin/lead solder...63/37 melts at 361 degrees...The silver bearing solder that
McMaster-Carr sells is listed at 354 degrees, almost 100 degrees cooler than
63/37, and is called low melting point solder...It's composition
Must be the new math - 361 - 354 = 100. Grin! Or have I managed to
miss something?
73 de John AI4JH
Jeremiah McCarthy wrote:
Actually, silver bearing solder has a lower melting temperature than 63/37 tin/lead
solder...63/37 melts at 361 degrees...The silver bearing solder that
Bob,
If you are having trouble with both the KOI2 and the KPA100, it would seem
to me that the problem could very likely be at the computer end. Have you
tried a different computer? Have you checked the cable for continuity from
end to end on pins 2 and 3?
73,
Don W3FPR
-Original
Hellò all...
Bill,
There was an article in QST July 2004 called Remote DC Power through your
coax by Phil Salas, AD5X that may be of use.
I'm sure someone here who has the annual QST cd, will oblige
Actually, there's no need for QST archives in this case..
Just visit Phil's great pages @
I don't think it's a problem with the jack screws, as they back out
completely into the housing, and I can plug in the cable all the way to my
computer and KIO2 board.
My biggest concern is that P4-7 on the control board is putting out 0 V.
From the troubleshooting section of the KIO2
Ok, I checked out the voltages on the control board to see if that might
shed some light on anything. (See page 15, Appendix E, Troubleshooting in
K2 manual)
Q12-E: 4V (not 6)
Q12-B: 4.5V (not 7)
U2-1, 2, 3: 4.07V (not 6.9)
U2-5, 6, 7: 4.5V (not 7.3)
U6-24: 0V (not 5)
U6-25: 5V (not 0)
Jason,
Nothing in that list is truely abnormal, and they are certainly not
associated with anything that flows through the KIO2. You should be looking
elsewhere for the source of your problem.
Are you certain that the PORT parameter in the menu is set to ON.
73,
Don W3FPR
-Original
Thanks for the time looking at this everyone. I was just worried about P4-7
because the manual says there should be 4.5 V there. I do not have KSB2,
tho.
Yes, the port menu item is on.
I'll look at the KIO2 and AUX boards a little more closely. My computer
hasn't got any serial ports, so
Jason,
Do you have the computer port set correctly? 4800 baud, 8 data bits, no
parity, 1 or 2 stop bits, handshaking set off (none).
Some USB to serial port adapters have caused problems with some pieces of
control software. Can you use a different computer with a real serial port
(or a
Greetings, all you I/O experts out there -- I need some advice, please
I'm using K2 #2634 with a KPA100 and KAT100; therefore the RS232 I/O is done
by the MAX1406 chip on the KPA100. I've done computer control in the past but
not for some months, so today I was rather surprised when I
The high voltage bias supply on the KIO2 is between -6v to -12, so
your 19.4 is probably sufficient, but the KIO2 Vss, U4 pin 8 is -9v on
my KIO2. The MAX1406 wants from -13.2 to -10.8, but the absolute max
ratings are from +0.3 to -14.0, so you're probably OK with the -5.87.
The real suspect is
This FD, my K2 quit receiving. The RX was working good and then just faded to
nothing. All bands were affected...all modes. The fade took about 30 seconds
to occure.
Took the K2 home and put it on the bench (there are plenty of ops and radios at
FD) and I could not get it to work. Went
Lee,
I would suggest that you investigate 2 areas - first the AGC circuits and
secondly see what the filter alignment looks like (if it has shifted, just
determine that fact, but don't adjust it until you look for the cause -
likely in the BFO area).
The slow fade certainly sounds like it could
Frank,
Can you make a comparison of the voltage on U4 pin 8 with what you had at
some time previous. All other voltages except that one seem in order with
no computer connected. The only pins used on the chip are 1, 5, 6, 8, 11,
12, and 16. Pins 9 10 and 14 are grounded, but the rest are
On Jun 25, 2005, at 5:02 PM, Matt Osborn wrote:
The high voltage bias supply on the KIO2 is between -6v to -12, so
your 19.4 is probably sufficient, but the KIO2 Vss, U4 pin 8 is -9v on
my KIO2. The MAX1406 wants from -13.2 to -10.8, but the absolute max
ratings are from +0.3 to -14.0, so
On second look...
On Jun 25, 2005, at 1:06 PM, Frank Van Cleef W1WCG wrote:
After verifying continuity between the computer end of the RS232
cable and the RF chokes on the KPA100 board (RFC6, RFC7) I meaured
voltages on the MAX1406 chip. Except for the 5 and 12v supply
voltages they were
You're right, Frank, I did misread P1 pin1 as coming from the AUXBUS.
However, the measurements I gave you for U4 Pin 12 is correct. On My
board, it swings from 3.5V to 5V with communications under way and a
steady 5V with the PC disconnected. Pin swings from 0 to -8V only if
communications are
KC4EYF HERE K2#4877
After a long Break on Building and playing a little cw with k2 I am building
ksb2 ssb board.
Im at page 10 and installed 7 crystals,now the next step says(install 3-pin
male connectores p2 and p3.
There is not any 3 pin connectors in ssb kit,Are they used or are they
missing.
I have the port settings set up exactly as you said. I thought about taking
it to work next week where my computer has a real serial port, I'll report
back then on how it goes.
-Original Message-
Jason,
Do you have the computer port set correctly? 4800 baud, 8 data bits, no
parity,
Here's another thing I just noticed.
When I hit the display button, my current now says 0.00. Obviously this is
false, and the K2 seems to be working fine otherwise. I'm worried, tho, if
I need to do some alignment or calibration to peak the current, that I won't
be able to do it.
The
They're missing. There should be a 12 pin male and two 3 pin male
connectors on the KSB2. All three mate with jacks on the RF board.
On Sat, 25 Jun 2005 22:00:43 -0500, kc4eyf [EMAIL PROTECTED]
wrote:
KC4EYF HERE K2#4877
After a long Break on Building and playing a little cw with k2 I am
What a nice combination, worked field day today and had a blast. I went to
a little-known park, Sage Ranch, just NorthWest of the San Fernando Valley
(about 20 minutes from my house and NE of Los Angeles), that has an
elevation of 2,000 feet. My 11 year-old daughter came along and made
several
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