Hi Don,
I alternate between the 2.8 khz and 2.1 Khz filter during normal SSB
operations. I am extremely pleased with my new to me K3 and I really could not
be happier with its current configuration. I have the dual receivers and
filters for CW and AM and FM, yet I still have a couple slots l
Don is correct. I use stock 2.7k filter in contest and 1.8 k filter when there
is a bad behaved station next to my wanted multiplier. 73 Johnny
Sent from my iPhone 4
Don Wilhelm 於 2012年1月14日 下午12:29 寫道：
> Keith,
>
> Under what conditions do you use the 2.1 kHz filter and wish for the
> 1.8?
Keith,
Under what conditions do you use the 2.1 kHz filter and wish for the
1.8? I ask because the use of a narrow SSB filter makes tuning more
critical (and more care is required to get an intelligible signal).
So if you are doing search and pounce in a contest, the extra time to
tune with the 1
I am a new owner of a slightly used K3, SN #1391 and I have the 2.8 khz and the
2.1 khz and I think that between the two of them for SSB, I have an awesome
setup. I am curious about the difference between the 2.1 khz and the 1.8 khz
but not enough to make the purchase decision at this point.
Hello Bill,
Please read page 5 and 7 of Adam's report in the web link below:
http://www.ab4oj.com/test/docs/npr_test.pdf
I concur Adam's findings from my usage of the tested rigs. You will notice on
P.7 about the difference between stock 2.7Khz filter and the 2.8 Khz 8 pole
filter.
Enjoy y
The stock 2.7 kHz filter is good enough if u seldom do any contest
Sent from my iPhone 4
W2BLC 於 2012年1月14日 上午10:06 寫道：
> I am in the process of kicking tires (pre-order time) and wonder if I
> would be well advised to get the 2.8 8-pole filter and the 1.8
> additional filter for SSB?
>
> M
I have the 2.7 and 1.8 SSB filters. For normal rag chewing I can't stand
listening through the 1.8. But during contests I can't hear much UNLESS
I'm using the 1.8. I am constantly tuning the SHIFT control to hear what I
need to. The up and down signals are just too loud to hear the weak stuff
c
Perhaps any charger with 13.8V and a current limit would do for LiFePO4.
I use batteryspace.com 13V 20 AH battery that costs just $128. Charging from
13.7 20Ah switching power supply. Seems to charge really well.
Batteryspace recommends their own charger for LiFePO4 batteries. It should
have max
On 1/13/2012 9:06 PM, W2BLC wrote:
>
> Would I get my money's worth from the 1.8 filter? Or, would I find the
> 2.8 8-pole filter used in conjunction with the DSP to be adequate?
>
Unless you chasing weak SSB DX or doing SSB contesting, you'll be fine
w/o the 1.8k filter The only time you MIG
I used HC5 just wrapped in foam. Crisp audio and no equalization needed.
Now I use CM500 with equalization. Almost the same sound but much higher
level of background noise. Only important with heavy processing.
Ignacy, NO9E
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K
I am in the process of kicking tires (pre-order time) and wonder if I
would be well advised to get the 2.8 8-pole filter and the 1.8
additional filter for SSB?
Most of my operating is SSB rag chew on 75 and 40 meters. I love
arm-chair copy and do use outboard Behringer products to that end on R
Here is what I use to key my 8877 amp with the XV50
http://www.w6pql.com/relay_sequencer.htm
Ed K7WIA
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K2-XV50-interfacing-to-power-amplifier-tp7186174p7186499.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Thanks for your reply and explanation of your "footswitch mod" circuit
Don. It makes perfect sense now that you've elaborated on the
functionality. And I can see how putting a properly wired sequencer
between a foot switch and the "footswitch mod's" PTT input would protect
my amp.
I simply mis
Lenny,
The W3FPR "footswitch" mod should work with the XV50 just like it does
with the base K2.
The K2 cannot be keyed until the "PTT" line to the W3FPR circuit is closed.
The XV50 will be keyed as normal by the K2 firmware through the cable
between the K2 and the XV50. You should have NO conne
Lenny,
use a sequencer to avoid hot switching (sequencer puts the amp online first,
afterwards the transverter, then the K2, with delays between switching
stages). A quick Google search on "ptt sequencer" will provide a few good
solutions (including my own ;-)).
73, Olli - DH8BQA
http://www.dh
HI!
If you have a K2 / XV50 combo and have interfaced it to a power
amplifier I'd like to hear from you on how you did it and what pitfalls
you might have encountered.
I've got a 6 Meter KW amp that I'd like to hook up to the K2 /XV50 and
I'm concerned about possibly hot switching the RF on th
Please multiply the voltage by 10 in the sentence below where I am describing
the battery. I think I rushed to quickly to drop in that decimal point.
And, thanks for all the help and comments from others. I always learn a lot in
these trials.
phil
On Jan 13, 2012, at 2:41 PM, Phil Hystad wr
Guy,
Thanks for the comments. Later on I might experiment to see if I can purposely
reproduce the buzz by methods you mention.
Yes, my test condition was using ABSOLUTELY no AC and no nearby AC or AC
artifacts. No charger on the battery but then again I had AC switched off at
the breaker pan
Let's call it buzz. If it was AC power hum the main components would be
60, 120 and 180 Hz. Cutting 400 Hz and below would have made it
significantly better. When the K3 is running on batteries without ANY
mikes and other connections, it has NO way to produce 60/120/180 Hz related
to AC house vo
Jim,
In answer to your first question below, that particular test NOTHING was
connected other then the battery to provide power. That included the antenna.
I will read your paper -- maybe it will describe hum and buzz as to how they
sound different. If you know of a good audio stream availabl
On 1/13/2012 10:30 AM, Phil Hystad wrote:
> I disconnected EVERYTHING. Nothing on the back panel of the K3 at all except
> for a Li-nano-phosphate battery as my power source.
Was your antenna connected? If so, where is the coax shield connected
to ANYTHING -- the earth, other gear, at a tower,
On Fri, 13 Jan 2012 12:26:47 -0800 Phil Hystad writes:
> bob,
>
> I am not sure if you understand my previous problems I was
> reporting. The hum has nothing to do with the mic plugged into the
> K3 or not (obvious if the mic is not plugged in, there is no
> problems). But, the hum comes wi
No one mentioned the firmware level but I am not on any beta version. I am at
MCU firmware level 4.39.
73, phil, K7PEH
On Jan 13, 2012, at 12:33 PM, NZ0T wrote:
> Phil, which firmware version are you using? I was using the beta 4.47 and
> I developed audio problems the other night, After I d
Phil, which firmware version are you using? I was using the beta 4.47 and
I developed audio problems the other night, After I deleted 4.47 and went
back to the latest production firmware all was fine. Sorry if this has
already been discussed - I just read this thread.
73 Bill NZ0T
On Fri, Jan
bob,
I am not sure if you understand my previous problems I was reporting. The hum
has nothing to do with the mic plugged into the K3 or not (obvious if the mic
is not plugged in, there is no problems). But, the hum comes with PTT transmit
and not merely because the mic is plugged in.
But,
so you unplug the mike input to K3 the hum goes away
when you plug into the K3 mike input the hum is there ?
I would think you have a bad mike/cord/connecter
Bob K3DJC
On Fri, 13 Jan 2012 11:31:38 -0800 Phil Hystad writes:
> Ron,
>
> Well, I just had a quick SSB chat with Clyde (AA7WC) (pre Noo
In the early 1990's, when CW was still the standard emergency mode at sea, a
radio officer on a ship in the Pacific was alerted by an SOS on 600 meters
(500 kHz). The ship located the signal on their radio direction finder and
headed in that direction. Sparks was unable to raise the ship but got of
Buck,
Good suggestion but that was one of the things that I checked earlier this
morning when I had the hum on the mic. Both compression level and mic gain
were the same that they always have been.
73, phil, K7PEH
On Jan 13, 2012, at 12:02 PM, Buck - k4ia wrote:
> Is it possible that in set
Is it possible that in setting the power level, you accidentally turned
up the compression? (they are on the same knob). If the compression is
too high it will make a rushing, buzzing sound on the audio
Buck
k4ia
On 1/13/2012 2:09 PM, Phil Hystad wrote:
> Ron,
>
> OK, now it appears I was mi
Ed, you're quite right.
In Canada, we have a ham band at 2200m (135.7-137.8kHz) which I am (very
slowly) working on becoming QRV on. The regulations are different than other
ham bands in that we are limited to 1W EIRP. Even with that low level, DX is
possible, for instance VE7TIL-JA7NI in 2010.
Ron,
Well, I just had a quick SSB chat with Clyde (AA7WC) (pre Noon Time net on 40
meters) and asked specifically for audio report with possible hum. His report
was no hum, clear good sounding audio, with S7 signal.
So I am suspicious of my florescent lights in the garage although they are on
Good luck Phil. That last part really suggests something loose in the mike
cord as I suggested at first.
Ron AC7AC
-Original Message-
Ron,
OK, now it appears I was mistaken when I said that that the hum was in both
mics. I think I flubbed something up in my previous test due to the way
Wow - this is strange!
1) Are all the K3's enclosure screws tight? Have you tried tapping or
lifting the K3 while listening to the hum (looking for an intermittent
connection)?
2) Does the hum remain if you key the rig in CW mode?
2) If you move the K3 and battery supply to a different locatio
Guy,
Thanks for not ignoring my problem any more and lending a hand :-)
Answers to your 1) 2) 3) 4) questions below...
On Jan 13, 2012, at 11:09 AM, Guy Olinger K2AV wrote:
> I've been ignoring this thread, but your last post piqued my interest.
>
> Several questions require answers before I
Ron,
OK, now it appears I was mistaken when I said that that the hum was in both
mics. I think I flubbed something up in my previous test due to the way that
the macros are assigned to keys which led me to thinking that the hum occurred
in both mics. But, I learned something in this...
One,
I've been ignoring this thread, but your last post piqued my interest.
Several questions require answers before I can go on. Just note that while
we tend to concentrate on the last new thing, the "workbench" and
instruments and their connections have far too often been the entire
problem. You wo
Thats how I learned the meaning of "Bleeder". Now I know The Way!
Bob
K7VO
On Fri, Jan 13, 2012 at 10:20 AM, Tony Estep wrote:
> On Thu, Jan 12, 2012 at 7:57 PM, wrote:
> > Too bad I learn the hard way
> >
> ===
> There's only one way to learn -- the hard way. So we oughta just cal
As noted in a previous post, I disconnected EVERYTHING. Nothing on the back
panel of the K3 at all except for a Li-nano-phosphate battery as my power
source. All AC off at the breaker panel for this room. The only electrical
equipment on was my K3 via the battery and my Macbook Pro laptop via
On Thu, Jan 12, 2012 at 7:57 PM, wrote:
> Too bad I learn the hard way
>
===
There's only one way to learn -- the hard way. So we oughta just call
it "The Way." As in, "how did you learn that the hv capacitors retain
their charge after the power is off?" "Oh, I learned that The Way."
Hi,
Equipment with non-ferrous enclosures are vulnerable to picking up magnetic
fields from linear power supplies. I found this out with my TT Corsair II,
and the solution was to put the power supply on the other side of the radio,
away from the audio circuitry.
The steel cabinets of the other
Hi Phil,
I am no expert by any stretch of imagination if you follow my posts from
my previous problems.
So please take what I have to say as only a suggestion. Are all your
external equipment grounds to a single point, this was major improvement
in my shack. What I mean by single ground is
I would short all audio inputs to the K3 right at the connector input with
everything disconnected except antenna. Key up radio in SSB and see if audio
buzz is still there.
This test pretty much isolates the K3
George, W6GF
Love my two K3s and awaiting my KX3
___
When the KPA500 is in standby, I assume that its AC mains is still
connected. Have you tried pulling the KPA500's mains plug to narrow
the search?
Is your P3 sitting between the KPA500 and the K3?
73,
Geoff
LX2AO
On January 13, 2012, at 18:20 +0100, "Phil Hystad" wrote:
> If I lay my hand
Mike Morrow, KK5F, wrote: "It is damnably difficult to radiate *much*
power on 600 meters unless
one has a lot of transmitter and real estate for antenna and ground."
"Most hams will be lucky to achieve a few milliwatts ERP from a few hundred
watts input power with small antennas not located over
I just did one more test. I hooked up my little 4-cell Li nano-phosphate
battery to the input. Turned on the K3 and did the test again with the K3 in
TEST mode. Same hum occurs. With this experiment, the only thing plugged into
the K3 is the MH2 microphone itself and all AC in the room is sw
Jim Brown-10 wrote
>
> On 1/13/2012 9:20 AM, Phil Hystad wrote:
>> Unfortunately, it is in both mics but not as strong in the Yamaha CM500
>> mic as in the MH2 but it is present.
>
> The K3 has unshielded audio transformers at all the audio inputs and
> outputs, and an unshielded transformer is
Jim,
Well, I would call it mostly a buzz. Also, the only near magnetic field of the
KPA500 power transformer is off, I mean powered off and unplugged, so that does
not seem to be the problem.
I just ran another test with everything disconnected, including ground and
coax. With the K3 in TEST
On 1/13/2012 9:20 AM, Phil Hystad wrote:
> Unfortunately, it is in both mics but not as strong in the Yamaha CM500 mic
> as in the MH2 but it is present.
Clarification question. Is it HUM (pure 60 Hz), or BUZZ (mostly
harmonics of 60 Hz)? If it's HUM, I would suspect magnetic field
coupling i
The Buddipole batteries use genuine A123 LiFePO4 (nanoPhosphate) cells,
Those are probably the best from a quality point of view, but they are
expensive. This technology can be found much cheaper elsewhere, but quality
is variable.
You should use a balance charger with these batteries just like re
Ron,
I have been able to do more tests. Unfortunately, it is in both mics but not
as strong in the Yamaha CM500 mic as in the MH2 but it is present.
This morning I double checked all connections (most in the back). This
includes the key out to the KPA500, the plugs for the cm500, the external
I admit I know almost nothing about microphones. But I wonder if there are
other
characteristics relating to the element that might be important in addition to
frequency
response, such as the amount of sound pressure a mic can take before it
distorts.
i.e. if a contester is close talking a boo
On 1/13/2012 5:47 AM, Lou Kolb wrote:
> It really is amazing! I never payed much attention to it with the old
> TS-440 but, since I've had the K3, its quite revealing to tune above the
> signal and note the drop-off. The difference between rigs can be dramatic!
YES! With so many contesters usin
Joe is quite right, Steve, but that should not dampen your enthusiasm.
Have you noticed that you can buy almost *any* inexpensive battery operated
watch and it'll keep excellent time year after year? Computer aided
manufacturing has brought us top quality functionality at rock-bottom
prices. The
Since it goes away when changing mics, it sounds a lot like a broken
connection in the microphone connector. I used to fix those by the dozens on
shipboard VHF radios, equipped with hand-held mics. The complaint would be
transmitting hum, no audio, or no PTT action, depending upon which wire
broke.
Will there be a release (soon) of mechanical drawings of
the KX3 showing size and location of mounting holes and/or
other bracket attachment points ?
Would like to prepare in advance.
Also, will there be an interface from the 100 PA to the
KPA-500 ?
73
Gene K1NR
(KX3 on order)
Byron,
Have you done any orderly troubleshooting? If not, it is time to do so
instead of "shotgunning" to try to fix it.
First, remove the KPA100 from the base K2 and see if there is normal
output from the base K2 on all bands. If the problem is in the base K2,
then do the Transmit Signal Tra
After a few months of the RF POWER levels falling lower and lower, I
now have no RF OUT on 10 thru 17 meters and 20 meters only has 5 watts
out. Yes this is with the KPA100 attached. The remaining bands 30
meter thru 80 Meters have about 25-30 watts RF out and 160 has about
12-15 watts out. I have
It really is amazing! I never payed much attention to it with the old
TS-440 but, since I've had the K3, its quite revealing to tune above the
signal and note the drop-off. The difference between rigs can be dramatic!
73, Lou WA3MIX
Lou Kolb
Voice-over Artist:
Radio/TV Adds, Video narrations
Mark,
Fldigi uses the soundcard audio for most everything it does, so put the
K3 into DATA A mode when working with fldigi and all will be well.
73,
Don W3FPR
On 1/13/2012 7:29 AM, pastor...@verizon.net wrote:
> Good Morning. I downloaded and installed Fldigi last evening and have the
> k3.xm
It's no secret, and this is nothing new, but K3s are really, really clean on cw.
As I saw for myself with my measurements on my K3 that I am doing for QSK
testing I don't see how the cw note on a K3 could be improved.
As a result, and with all the K3s being used by DXers, and DXpeditions have the
I wanted to report on some measurements I made on my K3 in the process of
incorporating
QSK into my homebrew amplifier. I think the new vacuum relay for antenna
switching and the
DIP relay for bias switching in the amp are fast enough to support QSK but I
wanted
to make a master timing diagr
> "pastormg2@verizon" == pastormg2@verizon net
> writes:
pastormg2@verizon> Good Morning. I downloaded and installed Fldigi
last evening and have the k3.xml file installed for the rig
interface. The only problem is that when I switch to cw on my K3
and then change Fldi
Good Morning. I downloaded and installed Fldigi last evening and have the
k3.xml file installed for the rig interface. The only problem is that when I
switch to cw on my K3 and then change Fldigi to cw the program will not decode
the code received. But if I switch the K3 to data then Fldigi t
63 matches
Mail list logo
