Mike, KT2E asked:
How accurate have you found the internal power meter/wattmeter to be on the
K2???
Reply: -
Mine is well within the 1/2 watt at 5 watts as stated in the specifications.
Measuring RF power at QRP levels is really not difficult. A low
forward-voltage drop
Hi Steve,
I personally have no bad experiences with MFJ antenna analysers at all. On
the contrary! In our city-club Leiden we have a MFJ-259B that goes from
station to station and is highly appreciated by all of us. And believe me,
there are some around here (excluding me of course hihi...) that
Hello the list,
I posted,a few days ago an inquiry about a PA problem with my K2
Till now no return!
But I have a lot of changes since this post. The two PA Xstors finished with
junction B/E open.
After changing both of them with two new ones, the same reactions happend, that
is very low
I'd really like to hear if this is an issue and if there is a solution. I've
been thinking of building a KX1 for the fun of it, but don't want a buggy
rig...
From my point of view it sounds like an RF on the rig problem...high voltage
at the antenna connector may be triggering the ATU into some
On Thu, 14 Apr 2005, John Young wrote:
Rubber bands sound good to me - being that I am cheap.
They also qualify you for the Low-Tech Award!
You'll understand why I was thrilled one day when I went to the local
supermarket and found a gazillion asparagus rubber bands at the salad bar.
I got
I had an identical problem a few years ago with an SGC-239 autotuner that I
originally used to tune my attic loop at the feedpoint. It was worst on 10
metres. It was suggested to me that RF could be getting in to the tuner. I
thought that was a bad joke, because an ATU ought to be pretty immune
Steve,
I take issue with your statement that both the MFJ-269 and the Autek VA1
are apparently junk. I have the Autek and the MFJ-259B, the model
without UHF, and both are quality although inexpensive instruments. I have
used the VA1 for approximately 3 years and the MFJ for 2 years and I
Bob,
Somewhere in the transmit signal path, the signal is being lost - the trick
is to find out where.
If you have not yet done so, build the RF probe from the parts that came
with your K2 and then look at the K2 manual - Transmitter Signal Tracing on
page 12 of Appendix E. Follow those steps
The Palstar ZM-30 is essentially the AmQRP Micro908
kit antenna analyzer, less some features, and
repackaged as a manufactured item.
I have a Micro908.
It's beyond fabulous. I sold my MFJ and the Autek.
__
Do You Yahoo!?
Tired of spam? Yahoo!
Mike,
The K2 internal RF metering is quite accurate - BUT it depend on having a
precise 50 ohm non-reactive load.
The wattmeters built into the KAT2, KPA100 and KAT100 remove the dependency
on a 50 ohm resistive load, but need to be properly calibrated first.
Many (IMHO most) external
Ron D'Eau Claire wrote:
Mike, KT2E asked:
How accurate have you found the internal power meter/wattmeter to be on the
K2???
Reply: -
Mine is well within the 1/2 watt at 5 watts as stated in the specifications.
Measuring RF power at QRP levels is really not difficult.
It's not a kit, but Vibroplex sells a production version of the K8FF, The Code
Warrior Jr.:
http://www.vibroplex.com/cw1.jpg
http://www.vibroplex.com/
Universal Radio sells a brass and a chrome version:
http://www.universal-radio.com/catalog/morse/0561.html
dt
.
--- Paul Erickson
I got mine at r l for 89.95$ (10$off) shpg
It's nice and small and good, as far as i know (a beginner cw op).
http://www.randl.com/cgi-local/cart/cart.cgi?ID=9331cart=moreinfo
bill
At 08:31 AM 4/15/2005, David Toepfer wrote:
It's not a kit, but Vibroplex sells a production version of
I have no problems with the MFJ unit I used to borrow!. I
have ordered the model which covers up to 450 MHz..
The Palstart ZM-30 is a commercial partial implementation of
the NJQRP groups Micro908 in AA908 configuration (which I
also have) and it covers up to 30 MHz.
The difference is the
Charles:
Thanks for your message. I did not take it as a flame.
However, speaking of fire, before I lay out hundreds of dollars for such a
widget, I'd like to make a prudent effort not to get burned.
The record with both MFJ and Autek appears to be a mixed bag. I've heard
both good stories
The Palstar unit is based on a design developed by AmQrp, its AA-908
based on the Micro 908 platform. The Micro908 is more flexible than the
Palstar, but the antenna analyzer circuitry is similar. There is a
substantial reflector community for the Micro908 and the designers
monitor the reflector
Hi Joe:
I do not own a MFJ-269. I lusted after one for a while, but there are so
many bad stories posted on so many different ham Web sites that I decided
not to buy one. Now, I'll admit that you do hear the occasional good story
about MFJ, but the reported experiences (even on this thread)
Weymouth:
Actually, the Kuranishi is included in the review, and quite favorably rated.
Steve
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On Fri, 15 Apr 2005 07:20:03 -0700, Dave G. wrote:
I have no problems with the MFJ unit I used to borrow!.
When getting back into ham radio several years ago and stocking up
on RF test gear, I was quite reluctant to buy mighty fine junk in
the form of an antenna analyzer. However, one of my
Stephen W. Kercel wrote:
There is an interesting piece in the May 2005 QST. It has product
reviews on four different antenna analyzers.
Two that were included are the MFJ-269 and the Autek VA-1. I have heard
endless horror stories from many hams about both, abysmal quality
control,
Jim:
Yes, I'd like to have a CIA-HF. However, the company that made them got
bought out. As far as I know, they are no longer being manufactured.
Once in a very rare while you can find one on eBay, but they are very
difficult to find.
73,
Steve
AA4AK
I also have access to a friend's
Mike Monger wrote:
How accurate have you found the internal power meter/wattmeter to be on the
K2???
The wattmeter in a basic K2 (without the KAT2 or KPA100) just measures the RF
voltage and computes the power. Therefore, the accuracy is highly dependent on
having an accurate 50 ohm
I had the analog MFJ-209 for a number of years without any problems and
bought the later MFJ-259B with digital readout two years back. Also have the
AEA
SWR-121VU for VHF/UHF antenna tests. No complaints with any of these analyzers
as they have worked faultlessly since purchase. The surplus
The KX1 should definitely not lose power output or the KXAT1 change its
L-network settings under any normal circumstances. We've tested the
tuner and the rig extensively, and I've never seen this happen.
The first things that come to mind are intermittent component failures
or power supply
OK, there has been several inquiries about this, so let me follow up on
my own reply.
Let's assume that we can solve the protocol stack issues and somehow
make the IR connection work between the Palm (or any laptop) and the
K2. You then have the problem of the very narrow beamwidth and
I also have the Autek VA-1. For the average ham who enjoys building his own
antennas or adjusts and maintains his commercially available antennas, the
VA-1 is accurate and has enough features to get the job done. The signed
reactance really saves a lot of time.
DO NOT LISTEN to the VA-1 signal
Vic:
Your point is well taken.
73,
Steve
AA4AK
while others are the guys who have a permanent 'attitude' (just read some
of the postings on eHam.net if you want to see what I mean)
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So, why put up with the hassles that IR brings when we can move to RF
using technologies such as BlueTooth or ZigBee, and be able to move
around at will?
Sadly, the Bluetooth serial port adapters all seem to require 45 mA to
50 mA -- I checked several manufacturers. OK for the shack, not
The aircable serial null modem looks nice, but it's $138 for the pair
and they both require power supplies, with wall warts pictured, so it
doesn't like like something I will be ordering right away.
I have thought of something similar for the T1 and FT-817 though and
will put it in another
On the heels of the K2 wireless KIO2 discussion, I thought I would share
some partly-baked ideas on T1 control.
I noticed that Microchip makes a line of PICs with ISM-band transmitters
in them. The T1 uses a 2-channel control with its own modulation, and I
wondered about making a wireless
Alan, Jan, worshipful members of the Elecraft mailing list,
I have resolved to 080 error. Alas I accidentally juxtaposed X2 and X1
on the
control board. Unsoldering them was a bit of a pain...especially the
miniature xtal case for X1 which was difficult to extract. Rather than wick
My first post, this is regarding my attempt to install
the KSB2 option into my K2/100 #4363.
I built the KSB2 option, and removed C167 and the two
jumpers from the RF board, plugged in the KSB2 board,
applied power, and got the Elecraft on the display.
The problem is that the receiver became
Well, I thought it might be time to update you folks on where my K2
build stands.
Yesterday I began Alignment and Test Part II. Things were nominal until
it came time to do the VCO voltage readings, some of which were fine and
some were way out of wack. Following the helpful guidance in the
Andrew,
Plug the KSB2 in again and be certain that it is properly positioned on the
headers. It is easy to misplug the KSB2 - if you see the standoff and TP2
properly aligned with the holes in the SSB board, it probably is mounted
correctly.
As a check (but not a permanent fix) slide a small
Andrew Meier wrote:
I
noticed when I jiggle around RFC2 I get some noise in
the receiver, and those little RFC1 2 toroids on the
KSB board were a challenge to wind, so I'm wondering
if I have a problem there.
Be sure to check for PTTL (Poorly Tinned Toroid Leads).
--
73,
Vic, K2VCO
Fresno
My clubs, (two) have had 3 MFJ's. The only reason we had 3, was we
replaced a 259 with the 259 B for added features, and gave the still working
one away as a door prize. I have the Autek RF 1, and then later got the MFJ
269 to gain 440 band. All have worked well. There was an intermittent
Ten Tec has a great T kit for adjusting Antenna Tuners with out a signal
on the air, save the built in noise bridge. And it costs a LOT less than an
Antenna Analyzer from the commercial sources. The kit is one board, handful
of components and maybe one hour or less assembly. You listen for a
Many pieces of equipment never get a comment from hams when they work as
advertised, or have so many advanced features that most hams never learn to
use them.
Thus, it is likely you hear the war stories of the problem equipment; rather
than of the successes.
In addition to my own MFJ 269, which
The problem is that the receiver became very quiet. I
could still hear the strongest signals if I turn the
AF Gain way up, and instead of S9 on the meter,
they're way down to S1. The KSB2 manual specifically
states (page 15, final step of initial test) this
should not happen, and if it does,
Guys,
If you read the specifications carefully and do the math, at 10% of
scale the reading can be off by a huge percentage even with a fine
instrument like a Byrd. Rare to see proper slug for HF qrp for a Byrd.
Wayne K9NE
- Original Message -
From: Larry Phipps [EMAIL PROTECTED]
should be able to get to Pacificon this year
Gordon, look forward to seeing you there.
73, Bob N6WG
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I'll second that...except for the MFJ and Autek part. The Micro 908
is the second analyzer that I have owned, and by far the better. I
previously owned an MFJ 209 analyzer. It worked well, as far as I know. The
Micro 908 kit is a great piece of gear. It is essentially a Microprocessor
Just worked a special events station in Maine... W1T... commemorating
the sinking of the Titanic. He is on 14256. I had just finished a change
on my HB minibeam and was tuning around A/B'ing signals with my sloper,
and came across him. There was a huge pileup, and for kicks I called
him.
Is this a spot?? G
Stan Rife
W5EWA
Houston, TX
K2 S/N 4216
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Larry Phipps
Sent: Friday, April 15, 2005 6:08 PM
Cc: elecraft@mailman.qth.net
Subject: [Elecraft] More K2 Mojo.
Just worked a special
I took my KX-1 in to work today to see how it looked on our HP. Results are
at:
http://www.ae5x.com/kx1.html
If anyone else has done similar tests with their KX1, I'd appreciate hearing
the results.
Thanks and 72,
John Harper AE5X
Portable QRP: http://www.ae5x.com
Larry N8LP wrote:
Did I break some kind of rule? The frequency was a throwaway in case
someone else was interested. The thrust of the posting was the mojo
that was reported a couple days ago.
Reply: --
Not to worry, Larry.
The keeper of the Wouff Hong for this
Looking for some parts at my local Radioshack I came across some panel
mount 130volt AC meters for the amazing price of $1.97. These are
D'Arsonval movements and quite good looking. The catalog number is
22-412.
Cheers,
Pete/N9PT
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This radio shack number comes up blank on the RS web page. Is it
correct?
best,
dave belsley, w1euy
On Apr 15, 2005, at 8:34 PM, n9pt wrote:
22-412
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Speaking of special events stations, K2 Mojo etc.
I worked one about a half an hour ago on 7.050, it was W5E in Louisiana,
commemorating the last combat mission flown by the 8th Air Force, against
Germany in WW 2. I was running 2 watts (from my just installed this
evening, internal battery
Hi Fellow Elecrafters,
My K2 internal speaker is dead.
I had messed up a crimp pin in the initial stages of assembly and so was not
even using the internal speaker but only using headphones. I discovered
tonight that I had an extra crimp pin. So, I got it installed. plugged to P5 (
I
Mike KT2E wrote:
no audio from internal speaker or from external speaker jack, only through
headphones. I checked the archives and found that there have been problems
in the past and that apparently it comes back to some bad contacts in the
headphone jack. So, should I just get Elecraft to send
Mike,
Before concluding that the headphone jack is at fault, check the wiring to
the external speaker jack and the plug at the end of the wire. If the
conductors are reversed at one of these points, the audio is shorted to
ground.
The other thing you can do is put the plug into the RF Board
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