Ralph,
I normally use MMTTY, with DXLabs. That is not the problem, the
Mark output of the radio is at ~200hz, NOT 2Khz as normal, and can not
tell if the space is there or not, due to the super low frequency offset
from the dial frequency. I'm setup for SO2V operation with Writelog,
Hi All,
This weekend my K3 stopped working with FSK. AFSK works just
fine. I have ran many RTTY contests with the K3 in FSK mode, using
various software drivers. The problem is I get a single tone, but at
the wrong frequency, Its about 200hz, not 2125Hz. I checked the pitch
setting,
If you are using MMTTY make sure that you have the "EXTFSK" patch set up
in both the TX setup window and the Misc window. I get tripped up on
this every once in a while. If these settings are correct you probably
have a physical problem with the FSK keying lead between the interface
and the
Gordon,
It's not clear what you mean. The mark output from the radio is at RF,
not at either 2 kHz or 200 Hz. Do you mean the audio monitor tone you
hear from the K3, or are you monitoring in some other way?
In FSK D (and also in AFSK A), the K3's dial displays the actual Mark
frequency as
Rich,
Sorry, I am going by the monitor tone. I need to check the actual
rf on another radio and see if the Mark is really at 200hz offset or at
2.1Khz like it should be ( I use high tones from mmtty or 2tone)
the AFSK A is working normal. I did not hear any shift using FSK D.
I
Rich, and others on the list,
Thanks for all of the suggestions. I got the system working.
The problem was the pitch setting. While in FSK D If you hold the Pitch
button the K3 shows the current pitch, (2125-170) is what was showing.
I changed it to low tones (915-170) and back to
Message-
From: Joe Subich, W4TV [mailto:li...@subich.com]
Sent: Friday, May 29, 2015 3:12 PM
To: Ken; elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 FSK power transients
But I stand corrected on the average. I was computing an average of the
crest, not the effective value of the wave
Joe - I am using data mode with DATA A selected. (This mode uses the SSB
filter and turns off equalization and compression. But of course the ALC is
on).
What would be really helpful is if you would download a copy of Spectrum Lab
and run the monitor output of your K3 through it while
Subject: Re: [Elecraft] K3 FSK
power transients
I don't know what a *monitor* output proves since it is *not* an RF
sample. However, I have attached a Spectrum Lab Time Domain capture
as requested. Notice the crest factor is well less than 1 dB.
73,
... Joe, W4TV
On 2015-05-29 7:45 AM, Ken_ke2n
Message-
From: Joe Subich, W4TV [mailto:li...@subich.com]
Sent: Friday, May 29, 2015 10:50 AM
To: Ken; elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 FSK power transients
A quick reply since I'm on my way out ... I'll look more in depth later.
I am concerned about the audio waveform
-Original Message-
From: Don Wilhelm [mailto:w3...@embarqmail.com]
Sent: Friday, May 29, 2015 12:09 PM
To: Ken; 'Joe Subich, W4TV'; elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 FSK power transients
Ken,
It may be that you are over-analyzing it.
Simply increase the audio
Ken,
It may be that you are over-analyzing it.
Simply increase the audio to produce 4 bars with the 5th bar
flickering. On the K3, that is the NO ALC point - the less than 5
bars area of the ALC meter is more or less like a VU meter, and is
done that way to allow you to properly adjust the
I don't know what a *monitor* output proves since it is *not* an RF
sample. However, I have attached a Spectrum Lab Time Domain capture
as requested. Notice the crest factor is well less than 1 dB.
73,
... Joe, W4TV
On 2015-05-29 7:45 AM, Ken_ke2n via Elecraft wrote:
Joe - I am using
[mailto:li...@subich.com] Sent: Friday, May 29, 2015 10:50 AM To:
Ken; elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 FSK power
transients
A quick reply since I'm on my way out ... I'll look more in depth
later.
I am concerned about the audio waveform generated by your WaveNode
device. I see
Are you using DATA A or trying to force FSK-442 through the K3 in
USB with the TX_EQ enabled? Again, I see *NO* frequency effects
(crest factor 0.1 dB at 30, 60 and 100 W) with my K3 when using
DATA A and the LINE In.
Also make sure your sound card does not have any enhancements
enabled.
73,
What roofing filter is being used for your transmit and have the offsets
been set correctly?
One issue I saw once was that the filters were mismatched with the filter
definitions entered and the guy was actually using an 8 pole 1.8 SSB for
transmit which was causing all kinds of problems in data
2015-05-27_20_48_16-Time_domain_scope_no_radio.gif
http://elecraft.365791.n2.nabble.com/file/n7603596/2015-05-27_20_48_16-Time_domain_scope_no_radio.gif
2015-05-27_19_07_20-Time_domain_scope.gif
http://elecraft.365791.n2.nabble.com/file/n7603596/2015-05-27_19_07_20-Time_domain_scope.gif
I
yup. I am seeing this on FSK441 and Data A mode. I recently acquired a
power meter that shows average and peak power and I am getting getting PEP =
1.8 times average on this data mode. Traced it to the K3 audio response on
transmit. I am using the 8 pole SSB filter. It seems the 882 Hz and 1323
Hi
Is it possible to transmit a Carriage return/line feed with FSK and psk?
If so is it a actual carriage return?
Thanks, Tom
va2fsq.com
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Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
Tom,
In ASCII code (used for PSK), LF and CR are two separate characters. LF
= hex A and CR = hex D.
A true CR has no line feed associated with it, and a LF has no CR
associated with it.
So it depends on the application doing the sending (and perhaps also on
the application receiving) to
...@embarqmail.com
Date: 25/06/2014 6:49 PM (GMT-05:00)
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 FSK and psk
Tom,
In ASCII code (used for PSK), LF and CR are two separate characters. LF
= hex A and CR = hex D.
A true CR has no line feed associated with it, and a LF has no CR
associated
Thanks -- I pulled it out and there they are -- 73 Hank K7HP
- Original Message -
From: Pfizenmayer
To: elecraft@mailman.qth.net
Sent: Saturday, April 19, 2014 12:03 PM
Subject: K3 - FSK in not working - KIO3 boards
The voltage on the FSD in line is floating at about
R2 is open and is blackened like it has been over dissipated . Now the $64,000
question is how can one over dissipate a 220 ohm resistor fed from 5 volts thru
10K ohms ???
Even if there was no resistor fed from 5 v it would be a tad under 1/8 watt -
which is probably on the edge for a 0508 SMD
Hank,
You might want to check the output of that NPN transistor circuit before
you connect it to the K3 FSK input again.
If there is a base to collector short, it could put the full RS-232
level on the FSK input pin, and that is quite likely to fry something in
the K3 (like that 220 ohm
Similar to others I had major problems with FSK-D RTTY with the latest beta
firmware this weekend on my K3 #1210.
I often found that my K3 didn't appear to recognize on the first attempt on
a band that the KPA500 was even present at all and instead put out the full
100W that I normally run when
It is Beta. If it doesn't work, roll back to a version that does.
On 2/10/2014 7:51 AM, Jim Miller wrote:
[snip]
Eagerly awaiting a fix!!!
73
jim ab3cv
__
__
Elecraft
Of course...
Was just adding to the info. Including the bit about the K3 not honoring
the internal tables for KPA500 being attached.
jim ab3cv
On Mon, Feb 10, 2014 at 1:01 PM, Wes (N7WS) w...@triconet.org wrote:
It is Beta. If it doesn't work, roll back to a version that does.
On
Jim,
I have a newer field-test release, 4.83, that fixes the primary problem of
power-setting in RTTY mode (FSK-D). While I still have little more work to do
to get power to settle quickly, 9 out of 10 ops testing 4.83 said it was
working well enough for their needs. (Definitely fixes the
2KHz is getting a bit above my hearing range.
I wonder if there is a way to do low tone FSK-D @1275 Hz mark.
Not interested in AFSK.
I suppose the center frequency of the filter would have to be reset as
well as the dual tone filter.
73 de Brian/K3KO
-
No virus found in this message.
Hi Brian,
Sure -- All you have to do is be in FSK-D mode, press hold the SPOT (pitch)
button. Use the main tuning knob to set the mark tone you want and exit out of
it. Works just fine and all the standard tones are available in the menu.
Jim - W0EB
I just checked it to make sure it works.
Thanks to Jim, W0EB.
It's already in there.
Just change the pitch while in the FSK-D mode.
In N1MM, if you're using a DXP38 modem, it is simple to change the mark
setting to match.
Works! Now the audio signals are not attenuated by many dB.
73 de Brian/K3KO
On 2/3/2014 18:46, Brian
, 2013 12:29 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] K3 FSK/D vs MMTTY
But, I do not have a P3 SVGA card. I know how well MMTTY/EXTFSK works. I've
used it. The question is: is the native K3 FSK/D decoder as good or better
than MMTTY?
Before I charge off and drop $300 on the SVGA card
I am trying to decide if I should invest in an SVGA card for my P3. I know
about all the nice features that the SVGA card will give me, but I have been
told by a top contester that the K3 decoder is not as good as MMTTY. I like on
occasion to do FSK/D, and have been using the built in function
On Sat, May 18, 2013 at 9:53 AM, Jim Leder (Hotmail) k8...@hotmail.com wrote:
I am trying to decide if I should invest in an SVGA card for my P3. I know
about all the nice features that the SVGA card will give me, but I have been
told by a top contester that the K3 decoder is not as good as
But, I do not have a P3 SVGA card. I know how well MMTTY/EXTFSK works. I've
used it. The question is: is the native K3 FSK/D decoder as good or better than
MMTTY?
Before I charge off and drop $300 on the SVGA card and monitor, to use mainly
for RTTY, is it worth it? I am content with the P3,
Subject: Re: [Elecraft] K3 FSK/D vs MMTTY
Jim,
I have the SVGA card in my P3 and I am very active in digital modes.
My input is if you are buying the SVGA card just for digital modes like
FSK/D etc then don’t buy it.
Any software package like MMTTY is better than using the K3, P3/SVGA.
I really like
On 5/18/2013 1:29 PM, Jim Leder (Hotmail) wrote:
But, I do not have a P3 SVGA card. I know how well MMTTY/EXTFSK
works. I've used it. The question is: is the native K3 FSK/D decoder
as good or better than MMTTY?
You *don't need* the P3SVGA to compare the decoder and MMTTY. The SVGA
uses
Yes, I realize that I do not need the SVGA card to compare them. Wasn't
thinking it through.
I first looked at the W3YY board, but remembered I had the other unit
somewhere around here, did a search and found it. With a DB15 Y (I also have
the PR6) cable and a 15 pin shell, I can easily
If you have experience using your K3 with these modes, I would greatly
appreciate how you went about it. West Mtn. offers the NOMIC, but I want to do
FSK and that product doesn't make it easy. I'd like to switch modes easily,
avoiding any cable swapping, if possible. I've looked at the
In theory, all you should need to do CW is a straight key or a paddle. :)
(And you can send PSK, FSK RTTY, and AFSK RTTY with a paddle...)
All you should need to do AFSK, soundcard, and computer-keyed CW are a pair
of audio cables and a serial cable.
I have a Navigator Interface, which I
Bill,
When I got my K3, I was pretty adamant about doing FSK. I was persuaded to go
with AFSK, and have been totally satisfied. There is no difference on the
receive end, and the setup is simpler, only two audio cables needed. None of
the offset tuning of the old days either.
73,
Mike NF4L
On
I used fldigi and just cabled up with no intermediate device.
Reggie k6xr
Amateur radio 57 years
DXCC, RCC, WAC
Sent from my iPad
On Dec 15, 2012, at 9:18 AM, Mike Reublin n...@nf4l.com wrote:
Bill,
When I got my K3, I was pretty adamant about doing FSK. I was persuaded to go
with
With the addition of a device like the SignaLink USB (SLUSB) for audio
management (often on sale or a free interface cable) and Ham Radio Deluxe
(HRD) you will find what you need.
If you get HRD before v6 officially comes out you will get a discount and v6
is officially supporting FSK for those
Yes you are right Rick, let fix the OP's subject error listing.
RTTY FSK-D is the mode tried right ? Mark and shift, shift keying
ascii ky keying from the k3 via K3 utility or Kcomm.
I dont know how I let myself repeat the psk-d rubbish, but I am a very
naughty boy.
Adrian ... vk4tux
--
View
actually the OP, me was talking about PSK D at 31bps not RTTY FSK
D KComm will do both FSK and PSKD to the K3
On 5/30/2012 8:18 PM, vk4tux wrote:
Yes you are right Rick, let fix the OP's subject error listing.
RTTY FSK-D is the mode tried right ? Mark and shift, shift keying
ascii
] On Behalf Of vk4tux
Sent: Wednesday, May 30, 2012 5:19 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 fsk D splater
Yes you are right Rick, let fix the OP's subject error listing.
RTTY FSK-D is the mode tried right ? Mark and shift, shift keying
ascii ky keying from the k3 via K3 utility
On 5/30/2012 6:39 PM, Rick Bates wrote:
I answered Adrian off list.
Good response, Rick. I have two K3s and P3s for SO2R, so I can use one
P3 to watch the RF output of the other radio. Transmitting AFSK RTTY or
JT65 with about 30W out of the K3 driving the KPA500 to full power, IMD
is at
Jim AB3CV wrote:
Any suggestions for finding the last station worked in a pack?
One of the problems with RTTY pileups, as with the other modes, is many
people call endlessly. That makes it difficult, as you won't hear (or see)
just one signal when it's time for the caller to xmit a report.
I played a bit with FSK-D and AFSK today. I was able to get FSK-D to decode
and display on the PC via the K3 Utility Terminal tab.
While listening to T32C working a split RTTY pack I realized that trying to
figure out which was the most recent worked station was a bit more difficult
than doing it
Jim,
It all depends on your software application(s). If you are using the K3
Utility display, then the only practical choice is FSK-D. If you are
using MMTTY, you have your choice between AFSK and FSK. FSK will
require a one transistor keying circuit, while AFSK requires
connection to your
The choice between AFSK and FSK is really about how you transmit, not
how you receive. With FSK, you feed an on/off signal to the K3 to
shift frequency, where with AFSK you send audio tones. You can
increase the receive bandwidth in FSK D mode just as you can in AFSK A
mode.
If you have KRX3, you
FSK is super simple to get going. No adjustments of audio etc. Let the
K3 do all the work. MMAVARI allows you when using N1MM to have up to 24
decoders going at the same time. While they may say up 2-10 the
decoders are probably only seeing the bandwidth of the radio which could
be 6k with
While they may say up 2-10 the decoders are probably only seeing the
bandwidth of the radio which could be 6k with the filtering etc.
MMVARI will only work with audio frequencies up to 3 KHz. The 6 KHz
filter (4.2 KHz max audio frequency in the K3) would be a waste. You
are better served by
It looks like I could use my KXR3/Split and feed the LR audio from the K3 to
two instances of MMTTY (or something) and then use CW memories to do the
sending rather than fiddling with the transmit audio and the misc beeps from
windows.
Is that correct?
Jim ab3cv
Yes. Exactly. The computer interface is like a memory keyer for RTTY.
It is more flexible if you have a computer close by and who doesn't
these days. Most logging programs even have RTTY built in so you can
send directly from your logging program. I use CommCat and I know many
others
Rich is absolutely correct:
In various environments using N1MMLogger, have seen K3's
(mine included) that have randomly gotten stuck in
transmit in RTTY, in SSB (using the N1MM DVK) and in CW, as
well, when using F-Key macros. In all three modes, I have
found Radio PTT On by Command ticked in
Clearing this selection, plus putting microHam Router in
full QSK mode without asserting PTT in CW, which may or may
not have anything to do with this issue, cures this and the
radio no longer gets stuck in transmit.
Selecting QSK in microHAM Router has nothing to do with this.
The
Hi List:
There is currently another RTTY contest on the go this weekend.
Has there been any progress on the reported FSK D 'bug' that
causes RX audio shift when 'chaining' memories on TX? [See,
a previous entry from me: K3 FSK D Mode: possible 'bug'?]
Regards and 73
John, N6JW
P.S. I
On 9/27/2010 4:30 PM, Bill Myers wrote:
I'm trying to remember why I wanted a FSK-capable radio for RTTY.
I've done thousands of RTTY Qs in contests, sometimes scoring fairly
well, and I've NEVER used FSK. If you're using a radio that allows you
to put the AFSK tones in the center of the
On 9/27/2010 4:30 PM, Bill Myers wrote:
I'm trying to remember why I wanted a FSK-capable radio for RTTY.
I've done thousands of RTTY Qs in contests, sometimes scoring fairly
well, and I've NEVER used FSK. If you're using a radio that allows you
to put the AFSK tones in the center of
Thanks to all - your help was conclusive. There is certainly no need to
switch from AFSK. The filter issue was the reason my pre-K3 setups were not
quite satisfactory!
So, I get to use that serial port for some other toy. That's a good thing!
73
Bill
--
View this message in context:
I'm trying to remember why I wanted a FSK-capable radio for RTTY. Before
(the K3), I have used sound-card programs (MMTTY, WriteLog) - now I have the
option. As I am a little short on serial ports, I initially set up the K3
using AFSK. Why should I switch?
Bill K6IFF
--
View this message in
On 9/27/2010 4:30 PM, Bill Myers wrote:
I'm trying to remember why I wanted a FSK-capable radio for RTTY. Before
(the K3), I have used sound-card programs (MMTTY, WriteLog) - now I have the
option. As I am a little short on serial ports, I initially set up the K3
using AFSK. Why should I
Bill,
You have a successful setup, so why even consider switching. There is
no difference between FSK and AFSK on the receiving end. The major
difference on the transmitting end is that FSK is more tolerant of
things like the mark frequency setting, but other than that, I cannot
find any
This is a two part contribution to the list: first, in this email, a report
on how well
the K3 works in FSK D mode (RTTY without an attached computer); the second
is
a report of a possible bug in the firmware, which I will raise in a
follow-up email.
First: the K3's FSK D mode (self-contained
As indicated in my previous email, the K3 works well in FSK D mode.
However, I think I may have discovered a (rare) bug in the firmware,
that has been 'bugging' me for a long time! If I am right, I believe this
issue could have been there from the beginning. I have K3 #936 and I
noticed the
John - found your post interesting and timely, as I played around with the CW
to RTTY mode last night myself in the contest. I used to operate the CQWW
RTTY contest regularly, and still hold the USA records for SOHP and SOLP,
after number of years. I have a feeling I threw off some of the
I can confirm - I observed the same thing while setting up the radio for
the contest on Friday and making a test QSO using the radio's memory
buttons. I had the LP-PAN and PowerSDR running, but no radio control
software. I called someone using the memory buttons by pressing M1
twice, and found
Hi Barry:
Thanks for your comments. That is quite an accomplishment to hold both
those records!
Just a comment about the IM (..--) prosign used to end the RTTY idle. It is
storable in the memories.
You can do it by using your paddle (entry should end right after sending
IM). Of course, the
@mailman.qth.net elecraft@mailman.qth.net
Sent: Sun, Sep 26, 2010 8:39 pm
Subject: Re: [Elecraft] K3 FSK D Mode: possible Bug?
I can confirm - I observed the same thing while setting up the radio for
the contest on Friday and making a test QSO using the radio's memory
buttons. I had the LP-PAN
] On Behalf Of Richard Ferch
Sent: Sunday, September 26, 2010 8:40 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 FSK D Mode: possible Bug?
I can confirm - I observed the same thing while setting up the radio for
the contest on Friday and making a test QSO using the radio's memory
buttons. I
Thanks for the comments, both on and off list!
Someone pointed out that I had failed to mention the value of using the Dual
Passband
Filter [Dual PB; Hold Xfil button]. Yes! I use it all the time. In fact
it comes up as my
default when I switch to RTTY. It is most helpful.
Also some folk
Thank you to each one who responded, both on and off list.
I was particularly surprised to see a message this morning from
Wayne (N6KR) himself, indicating that he would try to reproduce
the problem on his side.
To hear back directly from the chief engineer who designed your rig, just
a few
Hi, I'm new to the K3, (Aug 2010 sn 4536). I have really enjoyed it a
lot. I have dabbled into digital modes a bit and am wondering, how do
i connect and send/rec FSK?
I have determined that I need a cable from PC serial port to the
accessory connector and connect to gnd, PTT, and FSK. Do I
What software were you planning to use, MMTTY or maybe DM780. I know
MMTTY supports true FSK as does the K3. Not sure about DM780. And
yes, both of the above use the sound card for receive. The K3 will
decode RTTY but the display is limited and as far as I know there is
no provision for a
Bill,
I would suggest that you start by reviewing AA5AU's wonderful RTTY
tutorial here: http://www.aa5au.com/rtty.html
Most of your questions are RTTY-specific rather than being unique to the K3.
73,
Bob W5OV
Hi, I'm new to the K3, (Aug 2010 sn 4536). I have really enjoyed it a
lot. I
as this thread has expanded to include RTTY sites in general,
here are a couple of other links that may be helpful:
http://www.aa5au.com/gettingstarted/GettingStartedOnRtty.html
http://www.rtty.com/
GB 73
K5OAI
Sam Morgan
On 9/21/2010 10:54 AM, w...@w5ov.com wrote:
Bill,
I would suggest
To key the K3 in FSK D from software like MMTTY, you need a keying
circuit (typically a transistor switch) between the TxD signal line on a
serial port and pin 1 on the K3's ACC connector. There are several
different ways to do TX/RX switching (PTT), but one of them is to use a
similar keying
Ok so I just got an idea on how to make my FSK interface cleaner... I
ended up with something very similar to the W3YY interface on my first
attempt. You can see their interface here:
http://www.w3yy.com/fsk.htm
Anyway I had a box and two cables coming out of it with a DB9 on one
and a DB15 on
KK7P wrote:
The K3 directly generates FSK tones in a phase-coherent manner at the 15
kHz
IF. The output is then up-converted to 8.215 MHz, passes through the
crystal
roofing filter, then converted to the final RF output frequency. No audio
involved.
Thanks for the
Thanks for the clarification, Lyle. Mind you, to some of us, 15kHz *is*
audio. :)
It was for me until about age 20 or so. Now, I'm not certain if 6 kHz is
audio...
73,
Lyle KK7P/7 (Tucson AZ)
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Elecraft mailing list
Home:
johnson k...@wavecable.com
To: Julian, G4ILO julian.g4...@gmail.com; elecraft@mailman.qth.net
Sent: Sunday, October 11, 2009 10:38 AM
Subject: Re: [Elecraft] K3 FSK
Thanks for the clarification, Lyle. Mind you, to some of us, 15kHz *is*
audio. :)
It was for me until about age 20 or so. Now, I'm
AF4OX wrote:
I am setting up my K3 for FSK. I use Writelog for contest software. I
use PTT on COM1 and use COM2 to generate FSK, connecting through a NPN
transistor interface to the K# FSK IN. I am able to print fine via the
MTTY plug in for Writelog. However, when I transmit, the
This was last discussed a couple of weeks ago. I think the reason for this
is that the K3 does FSK by generating audio tones in the DSP. These audio
tones must pass through the SSB filter and what you are seeing is the effect
of ripple in the filter passband. Other radios, I guess, generate a
I'm getting my K3's set up for the CQWW DX RTTY, and notice
that there is a significant variation in power output
whenever the FSK goes from mark to space or space to mark.
One of these K3's is driving a high gain tetrode amp, and
the amp's screen current is jumping all over the place. The
Hi Dave,
Have you tried AFSK instead? If so, do you see similar power transients?
Depending on what software is generating the tones and assuming the
audio level is set properly, it is possible that AFSK might produce a
cleaner signal than what you are seeing in FSK. Operationally, they are
I just noticed some issues like that last weekend when
operating the SAC CW contest. All off a sudden when tuning
up on 10m a big bang occured in my linear amplifier. Now
nothing got hurt it just blew the fuses. This amp used
to be driven with 200W and I never ever had any issues
before. Of course
There are a couple of choices. I chose to use a 15-pin Y connector and
plug a microHAM cable on one side of the Y and a Top Ten Devices Band
Decoder on the other. Another choice is a little breakout board with
connectors for leads. And of course you can make up your own cable.
All of these have
Welcome to the K3 world Jim. I have used the one transistor interface
from the MMTTY help files built into a D plug. It uses 1 x NPN
transistor (any small signal one will do), 2 x resistors and 2 x diodes.
I no longer use the MMTTY program but recall not needing a PTT
connection, only the FSK one
Hi Folks,
I have a K3 on it's way form Aptos that will arrive Tuesday, Sept 8th.would
have here today except for a minor hiccup. But, not complainingjust a
lesson in patience. I've been worrying over the assembly and operating manual
the last few days. I like to contest using FSK
There are a couple of choices. I chose to use a 15-pin Y connector and
plug a microHAM cable on one side of the Y and a Top Ten Devices Band
Decoder on the other. Another choice is a little breakout board with
connectors for leads. And of course you can make up your own cable.
All of these
Jim Harris schreef:
Hi Folks,
I have a K3 on it's way form Aptos that will arrive Tuesday, Sept
8th.would have here today except for a minor hiccup. But, not
complainingjust a lesson in patience. I've been worrying over the
assembly and operating manual the last few days. I like
Trying to build an interface for FSK mode on my K3 for use with MMTTY.
When I put the rig into data mode then select the DATA MD button and
spin the sub VFO, I see the option for FSK D mode.
Great, however it also comes up as USB and REV. For me to decode in
this mode I have to set MMTTY to
Press and hold ALT to select the other sideband. See pg 31 of D2 rev
manual, last paragraph of sub-section Data Mode Selection, which
also describes the REV indication.
Bob NW8L
On Sat, Apr 4, 2009 at 12:12 PM, Patrick Skerrett patr...@skerrett.net wrote:
Trying to build an interface for FSK
I'm using FSK-D.
To tune in an FSK signal I need to use Shift to shift the signal to the right
of the passband display on the K3
(centered over the right side arrow). This then places the signal in the center
of the MTTY display. However, received
signals are now about 0.55 KHz higher than
I'm using FSK-D.
To tune in an FSK signal I need to use Shift to shift the signal to the right
of the passband display on the K3
(centered over the right side arrow). This then places the signal in the
center of the MTTY display. However, received
signals are now about 0.55 KHz higher
Hi Bud:
If you make sure that the MMTTY Mark freq is set to the same pitch as
the Mark freq on the K3, I'm sure you will find that the RTTY signal
will appear in the center of the MMTTY screen with the K3 passband centered.
73, Ken K3IU
~~~
Bud Governale, W3LL wrote:
Hi Ken,
Thanks!!!
That did it. All is OK now.
73,
Bud W3LL
- Original Message -
From: Ken K3IU
To: Bud Governale, W3LL
Cc: Elecraft Reflector
Sent: Thursday, March 26, 2009 2:55 PM
Subject: Re: [Elecraft] K3 FSK Passband Frequency
Hi Bud:
If you make sure
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bud Governale, W3LL
Sent: Thursday, March 26, 2009 2:44 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 FSK Passband Frequency
I'm using FSK-D.
To tune in an FSK signal
Clint,
I looked at the manual, and the K3 FSK input has an internal pullup
resistor, so none is required externally.
That is unless the logic signal you are using to drive the FSK input has
some unique requirements (like needing more saturation current than the
K3 pullup resistor provides. A
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