Tomy,
Remove the right side panel and dress the ribbon cable and the speaker
cable up into the space between the top of the Control Board and the
KPA100 - get them as far away from the KSB2 board as possible.
If that does not correct it, you may need to adjust the BFOs for the FL1
OP1 filter
Anyone ever have any problems with muffled audio on SSB with the
K2? It seems no matter which K2 I use I keep getting reports sounding
like a towel over the mic. I have tried various adjustments but it stays
the same. This one I have now has that Mic kit that you can use any mic.
I have tried the E
Don,
Yes, installed the updated shield and the KPA100 upgrade mods in 2010. A to
B mods on the K2 were done in 2003. Also, did the SSB mod to broaden the
bandwidth to 2.5 KHZ back then also.
73,
George, NC5G
George,
Do you have the updated shield on that KPA100? Shield over the speaker
m
George,
Do you have the updated shield on that KPA100? Shield over the speaker
magnet and a narrow notch at the SO-239 jack and solder lugs to directly
connect the SO-239 jack to the outer surface of the shield. If you have
all those, there should be no change in the K2 behavior when installi
After some extensive on the air testing with my Son, this is what we have
found.
One by one I eliminated pieces of equipment starting with the KPA500, then
the KAT100, followed
by removing the KPA100 from the K2, then changing power supplies, hooking
the basic K2 to the 2.5A ps
that I power the KX
You are probably right, Vic. Per Don's suggestions, I will do some more
tests, but it will probably be this weekend before I get to play radio
again. I will post what I find out.
73, George, NC5G
My experience with the K2 and the much smaller transformer in an antenna
rotor control
lead me to b
My experience with the K2 and the much smaller transformer in an antenna rotor
control
lead me to believe that it is very likely that the big transformer in the
KPA500 is
"FM-ing" your K2. The VCO shield kit is likely to solve this problem.
On 10/22/2012 3:53 AM, VK1OO, Mike Walkington wrote:
Hi George,
I have a similar set-up, having added the KPA500 two or so weeks ago.
Recently a local ham using an SDR as a spectrum analyser notied that I have
a lot of splatter on my signal.
The KPA500 is locted about 8 inches above the K2 and KPA100. I have not
fittted the VCO Shield. Thanks to yo
FETS in low power amplifier?
David
KD4NUE
Sent from my Verizon Wireless Phone
- Reply message -
From: "George Winship, NC5G"
Date: Sun, Oct 21, 2012 22:48
Subject: [Elecraft] K2 SSB audio problem
To:
After 11 years of operating and many unsolicited reports of great a
George,
Ask yourself what has changed between good operation and now.
Have you re-arranged your shack? The K2 is sensitive to devices with
transformers positioned within 2 feet of the left side panel - the
transformer's magnetic field modulates the K2 VFO.
As a test, move your K2 away from eve
After 11 years of operating and many unsolicited reports of great audio, I am
suddenly getting not so good reports from my K2/100. Present setup is
K2/100, KAT100, KPA500, and resonant antennas on 75 and 40 meters. Very
rarely do SSB on any other bands. Stations seem to have trouble describing
the
.
Thank you so much for your help.
Andreas, KU7T
-Original Message-
From: Don Wilhelm [mailto:w3...@embarqmail.com]
Sent: Wednesday, January 04, 2012 2:38 PM
To: Andreas Hofmann
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K2 SSB audio distorted. Realignment, MIC gain mod etc.
Andreas
Ideas?
>
> Thank you very much for your help. Looking forward to some pointers.
>
> Thanks and 73,
> Andreas, KU7T
>
> -Original Message-
> From: Don Wilhelm [mailto:w3...@embarqmail.com]
> Sent: Saturday, December 31, 2011 4:17 AM
> To: Andreas Hofmann
> Cc:
.
Thanks and 73,
Andreas, KU7T
-Original Message-
From: Don Wilhelm [mailto:w3...@embarqmail.com]
Sent: Saturday, December 31, 2011 4:17 AM
To: Andreas Hofmann
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K2 SSB audio distorted. Realignment, MIC gain mod etc.
Andy,
I assume you have the
Andy,
I assume you have the K2/100 rather than the K2/10. The KPA100 can
couple into the KSB2 board giving audio distortion. Remove the right
side panel and tuck the ribbon cable and speaker cable up into the space
between the KPA100 and the top of the Control Board.
Mods to increase the mic
Hi
I have SN 2555 and have exclusively used it for CW. Now, I am trying to use it
for SSB, but I am getting reports of distortion. Even with SSBA 1 and SSBC 1:1.
If I speak really quietly, with microphone about 10 inches away, the distortion
is manageable but not fully gone. ALC seems to go a c
ve no RF earth. I would suggest that you try
grounding the station to get rid of any stray RF that might be coming in
especially on voice peaks. Other than that, the suggestions that Don made
will hopefully cure the problem
73, George, NC5G
--
View this message in co
Martin,
You may be driving the internal ALC too hard. With the MH2 mike, it is
rare to have to use SSBA higher than 1. Try bumping up the compression
to 3, I think you will like it better.
A HiCur message only relates to the base K2, not the KPA100, and means
the current set in CAL CUR is b
Hello, I've recently started to use my K2/KPA100 on SSB running 100W
with an MH2 mike mostly on 80m. I use 2:1 compression and mic preamp is
set to 2. The antenna is an 120ft doublet, 30ft of 300ohm ribbon feeder,
remote mounted z match tuner right under the centre of the doublet and
approx 70ft RG
Joe,
It is difficult to say what others may perceive as "fuzzy around the edges".
May I suggest that you operate the K2 into a dummy load and listen to it
yourself on your FT-1000D. Actually it would be better to record the
output of the FT-1000 and listen to the recording because it is
diffic
I have a K2, mid 5000 serial number, mic input wired for Kenwood, 50 amp 12
volt Amidon power supply, with a KPA100 running 100 watts. I can easily switch
my HM-10 mic between transceivers using seperate audio cables for each radio to
perform on air testing. When using a Heil microphone HM-10 wi
Is it only on SSB (and not on CW)?
I've had this with many rigs (but not just SSB). Tapping the CW key
(providing watts output) may "cure" it by assuring continuity at some
downstream contact or relay (antenna box, coax connections, etc).
When I note this, it is time to clean (or at least cycle
In a recent message, Mike Short <[EMAIL PROTECTED]> wrote ...
My K2 has an interesting problem. While listening to SSB, after a period of
time, the audio fades way back. If I tap the key, and briefly put it in
transmit, it comes back.
That sounds like a similar problem to what I had. It turned
My K2 has an interesting problem. While listening to SSB, after a period of
time, the audio fades way back. If I tap the key, and briefly put it in
transmit, it comes back. Also, I do not have any audio on transmit unless
the meter is set to ALC. If it is in the RF position, it transmits, but only
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