Err, did you mean 3 amp instead of 3 watt? 1 amp at 12v = 12 watts,
of course. I have found the MFJ-4103 (2.89 A) to be a suitable
supply for my K2 (except that the output isn't quite high enough to
maintain battery charge with the KBT2 installed) and it should be a
good choice for the
If one centers their filters at 2210 Hz in RTTY mode for use in RTTY, then
is RTTY no longer the mode of choice for PSK31? Would you just use USB for
PSK31 and adjust your speech compression? Are RTTY and PSK31 both useable
with RTTY mode with filters centered around 2210 Hz?
Dohn N8EWY
Hello All
Just to thank those who worked me (perhaps with a K2 ?) as 4X0L this last
BARTG contest.
My K2 was a stand by gear, as I needed 100w from my other rig, but I
trust many had a ball with their K2.
73, Isaac, 4Z4TL (4X0L)
[EMAIL PROTECTED] http://www.iarc.org/~4z4tl
The MD2 has been sold!
TNX to all the responded.
Kurt - K0ARO
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I'm in the middle of building the KPA100 I bought last spring, and decided
it best to build the board as is, then install the upgrade parts. There
are only 16 of them, so it shouldn't add too much time. I built up to page
28 in the manual, and am now waiting for the upgrade kits to arrive.
I'm very happy with the stock K2 filters.
My prior rig was an Omni V and I had the pleasure of trying both the
TenTec 250 and 500 Hz CW filters and the Inrad 400 Hz filter in the same
rig at the same time. I did a lot of A/B switching between the Inrad
and each of the TT filters. What I found
Some radios require some extra effort to tame filter
blow-by (especially when the filter physically cannot
fit in place of what it replaces).
The K2 just doesn't seem to lend itself to after-
market filters - both as a result of the above
(this should have warned us all who have tried) by
the
Dohn,
You can always tune the PSK31 signal with the K2 VFO so the audio will
appear near 2210 Hz rather than the more traditional 1000 Hz. But many
RTTY software packages offer another alternative - adjust the RTTY tones
in the RTTY software.
I believe the better way is to tell the RTTY
I'm all for anything that keeps me from fiddling with
the K2's filter setup! The thought of playing with
them makes me squeamish.
I just downloaded MMTTY and installed it on my
computer at the office and now see where I can change
the mark freq to 1275 Hz.
I know I should be embarassed for
For sale: K2, s/n 5494 with a KSB2, KIO2 and a KNB2
with KPA100 amp/KAT100 tuner in the EC2 case.
Professionally built and works perfectly and like new.
All manuals, cables and the extra cover for the EC2
are included. Pictures on request. $1300 shipped
conus. I am willing to sell the EC2 Combo
I'd welcome your views on how to measure output power
of my newly-bilt K2 with resonable accuracy. The operative
word here may be reasonable. (:-))
I have a quality 50 ohm dummy load, a Bird with a 50W HF
element, the built-in wattmeter in the K2/KAT2, and an OHR
WM-2. As one would expect,
Ken,
Of those instruments, the WM2 is your best choice for general use in
calibrating your KAT2 wattmeter - since the ranges are set with 1%
resistors, once calibrated it should track correctly from one range to
another. While it is properly calibrated with a DMM, it would be wise
to verify
Will one of you who's usung an Icom microphone
please tell me the value of the bias resistor you've
used when configuring the K2's front panel jack?
73! Ken Kopp - K0PP
[EMAIL PROTECTED]
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5.6 k and I put it in the plug itself. 73 -- Don N4HH
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ken Kopp
Sent: Monday, March 19, 2007 6:43 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Icom microphone bias resistor?
Will one of you who's
While I owned a K1, I used a Radio Shack 13.8 volts DC, 3 amp power
supply, catalog no. 22-504, at all power levels on the K1 without a
problem. Now if I just had not sold that K1
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You must
I just completed a K2 and the KPA100. Sincere thanks to Don and others who
answered my questions, and to Scott at Elecraft who was very quick to resolve a
couple parts issues for me. So I decided to run it in the VA QSO party this
weekend as its first serious on-air test.
I used the rig for CW
I only had one minor issue and one issue that I will need to resolve. The minor
issue is that the stand is too high to use if you are constantly tuning the
bands. A center position would be helpful.
From the Elecraft website:
ETS15 Tilt Stand 1.5 $14.00
While this tilt stand won't do much
Tom,
Congratulations on your success.
There is a half-high tilt stand available from Elecraft that may work
for you. I tried it and find that it does work, but for me is about 1/2
inch too low, so I put a piece of 1/2 inch plywood under it.
As far as the fan noise, it should not be THAT
Tom,
There is half-height stand available ... I have one under my K2.
I can't give you the number, but check the website.
73! Ken Kopp -K0PP
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Don,
Thanks for the suggestions. I will try what you suggest. This fan really ROARS!
So maybe I did go overboard with the tightening of the hardware. I hope so.
In a CW contest, I am transmitting about 50% futy cycle for 45 minutes at a
time. So it gets pretty warm. The fan was on Norm, but I
Folks,
I have successfully reached my K2 Assembly, Part III, pg. 65, trimmer
installation step. The red marked trimmers were no problem identifying
the orientation. It looks like the 30 pF trimmers are different than
were in the older kits and there is my difficulty: The 30pF trimmer caps
To the best of my ability (e.g. memory) I put the shorter flat side
along the flat side on the silk screen, and the long flat side against
the long rounded side of the silk screen. I just finished my rig over
the weekend and aligned it without issue.
David Wilburn
[EMAIL PROTECTED]
K4DGW
K2
Ed, there was a builder's alert released on March 1 on this subject. I can't
find it on the Elecraft web site, so I'll attach a copy to this email going
direct to you.
You should have gotten a copy in your kit. I'm sorry if that didn't happen!
I'll ask Aptos to post the alert for others.
Ron
This Wednesday evening, the North American QRP CW Club will be holding
its monthly sprint.
Here are the particulars:
Date and time:
Thursday, March 22nd, 0030-0230 UTC
(Remember that's Wednesday evening here in the USA) That's 8:30 -
10:30 EDT, 7:30 - 9:30 CDT, 6:30 - 8:30 MDT and 5:30 -
That's correct David. If they're installed backwards one may need to use a
non-conductive screwdriver to align them. The idea is to have the
screwdriver slot at RF ground. That way a metal screwdriver can be used. If
the slot is hot, touching it with a metal screwdriver will detune the
circuit.
Well, it's finally done. Complete with 80/30, KX1AT, and paddle, and it works
well. Using internal AA batteries at a little over 8 volts (sorry, didn't have
any fresh ones!), the [uncalibrated] internal wattmeter read power between 1-2
Watts depending on band into a dummy load. Hopefully
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