Re: [Elecraft] K3 - AFSK RTTY
Joe... This is great. Thanks for the information. One frustration down in my life.a couple of million to go. Lee - K0WA In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? Common Sense is the image of the Creator expressing revealed truth in my mind. - John W. (Kansas) Never interfere with anything that isn't bothering you. From: "Joe Subich, W4TV" To: Elecraft Reflector ; k6...@foothill.net Sent: Sunday, January 5, 2014 8:50 PM Subject: Re: [Elecraft] K3 - AFSK RTTY In N1MM -> Config -> Configure Ports, Mode Control, Audi, Other -> Mode Control ... make sure you have set the RTTY mode to *AFSK* and not *RTTY* if you are using AFSK. For more information read the very fine N1MM Logger on-line documentation. 73, ... Joe, W4TV On 1/5/2014 9:26 PM, Rick Tavan N6XI wrote: > Here is one thing that will cause a similar problem: If you program a > memory while DATA MD is X, then every time you recall that memory you will > be put back into X, regardless of the DATA MD setting prior to the memory > recall. You might have set the memory years ago when using FSK D and now > are using AFSK A. Use the memory, go directly to FSK D. This bit me several > times this weekend. However, I don't see an obvious connection between > memory recall and N1MM band map clicking. > > /Rick > > > On Sun, Jan 5, 2014 at 5:14 PM, Fred Jensen wrote: > >> What would a contest be if everything always worked like it did the last >> time in the contest. >> >> I use a minimalist RTTY setup: >> >> 2 stereo cables from LINE IN/OUT to LINE OUT/IN >> AFSK-A with PTT from VOX >> N1MM with one instance of MMTTY >> >> Basically, it worked fine, made over 700 Q's. At the urging of the club, >> I decided on the new SO Unlimited [i.e. assisted], and that worked OK too >> except: >> >> Every time I clicked on a band map spot, the radio went to FSK-D, and of >> course wouldn't key. I had the couple of usual N1MM lockouts and >> re-starting N1MM also caused this change to FSK-D. >> >> I'm running 4.58 FW, haven't loaded new in a long time, and N1MM is >> running 13.10.2, also haven't updated that in quite awhile, both have been >> working very well. >> >> I don't think this is a K3 problem, but wanted to check if anyone else >> using the minimalist configuration has seen this. >> >> 73, >> >> Fred K6DGW >> - Northern California Contest Club >> - CU in the 2014 Cal QSO Party 4-5 Oct 2014 >> - www.cqp.org >> >> Go SF! >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> > > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 AFSK RTTY problem
Yes, what you describes sounds like what happened to me when I switched to 80 meters. I did have to click the 'reverse' button on Fldigi to receive properly. Then when I tried to work stations, I got a lot of 'AGN.' I noticed the bargraph displays on the W2 watt meter kept flashing. I finally checked the DATA MD button and it was on 'AFSK A' instead of 'DATA A.' After changing it back to 'DATA A' and unchecking the 'reverse' button in Fldigi, I had no more problems. Mike KI0HA On 1/4/2014 14:52, Tony Kennedy wrote: Are you in DATA A mode, or if not do you have compression turned up too far? 73 -KD0TSX On Saturday, January 4, 2014, Ron W3ZV wrote: I am trying to operate AFSK on 15m in the ARRL RU contest. I have 2 contacts in the last 2 hours. I am by no means a big gun, but I am usually better than this. Lineup is K3-KPA500-KAT-500. No problems on receive. Drive is set to produce about 350 watts from the KPA-500. SWR is below 1.5. As far as I can tell, baud rate, and shift are okay. I don’t think I am reversed. I know my signal is getting out, because I get a lot of AGN AGN. What disturbs me is that my ALC indication is rapidly jumping between 2 to 5 bars. This is not the 4 solid and 5 flickering. Power out on the KPA500 jumps between 300 and 400 watts. If anyone has a suggestion to get me back in the fray, I would be most grateful. Ron W3ZV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - AFSK RTTY
In N1MM -> Config -> Configure Ports, Mode Control, Audi, Other -> Mode Control ... make sure you have set the RTTY mode to *AFSK* and not *RTTY* if you are using AFSK. For more information read the very fine N1MM Logger on-line documentation. 73, ... Joe, W4TV On 1/5/2014 9:26 PM, Rick Tavan N6XI wrote: Here is one thing that will cause a similar problem: If you program a memory while DATA MD is X, then every time you recall that memory you will be put back into X, regardless of the DATA MD setting prior to the memory recall. You might have set the memory years ago when using FSK D and now are using AFSK A. Use the memory, go directly to FSK D. This bit me several times this weekend. However, I don't see an obvious connection between memory recall and N1MM band map clicking. /Rick On Sun, Jan 5, 2014 at 5:14 PM, Fred Jensen wrote: What would a contest be if everything always worked like it did the last time in the contest. I use a minimalist RTTY setup: 2 stereo cables from LINE IN/OUT to LINE OUT/IN AFSK-A with PTT from VOX N1MM with one instance of MMTTY Basically, it worked fine, made over 700 Q's. At the urging of the club, I decided on the new SO Unlimited [i.e. assisted], and that worked OK too except: Every time I clicked on a band map spot, the radio went to FSK-D, and of course wouldn't key. I had the couple of usual N1MM lockouts and re-starting N1MM also caused this change to FSK-D. I'm running 4.58 FW, haven't loaded new in a long time, and N1MM is running 13.10.2, also haven't updated that in quite awhile, both have been working very well. I don't think this is a K3 problem, but wanted to check if anyone else using the minimalist configuration has seen this. 73, Fred K6DGW - Northern California Contest Club - CU in the 2014 Cal QSO Party 4-5 Oct 2014 - www.cqp.org Go SF! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - AFSK RTTY
Here is one thing that will cause a similar problem: If you program a memory while DATA MD is X, then every time you recall that memory you will be put back into X, regardless of the DATA MD setting prior to the memory recall. You might have set the memory years ago when using FSK D and now are using AFSK A. Use the memory, go directly to FSK D. This bit me several times this weekend. However, I don't see an obvious connection between memory recall and N1MM band map clicking. /Rick On Sun, Jan 5, 2014 at 5:14 PM, Fred Jensen wrote: > What would a contest be if everything always worked like it did the last > time in the contest. > > I use a minimalist RTTY setup: > > 2 stereo cables from LINE IN/OUT to LINE OUT/IN > AFSK-A with PTT from VOX > N1MM with one instance of MMTTY > > Basically, it worked fine, made over 700 Q's. At the urging of the club, > I decided on the new SO Unlimited [i.e. assisted], and that worked OK too > except: > > Every time I clicked on a band map spot, the radio went to FSK-D, and of > course wouldn't key. I had the couple of usual N1MM lockouts and > re-starting N1MM also caused this change to FSK-D. > > I'm running 4.58 FW, haven't loaded new in a long time, and N1MM is > running 13.10.2, also haven't updated that in quite awhile, both have been > working very well. > > I don't think this is a K3 problem, but wanted to check if anyone else > using the minimalist configuration has seen this. > > 73, > > Fred K6DGW > - Northern California Contest Club > - CU in the 2014 Cal QSO Party 4-5 Oct 2014 > - www.cqp.org > > Go SF! > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > -- Rick Tavan N6XI Truckee, CA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 - AFSK RTTY
What would a contest be if everything always worked like it did the last time in the contest. I use a minimalist RTTY setup: 2 stereo cables from LINE IN/OUT to LINE OUT/IN AFSK-A with PTT from VOX N1MM with one instance of MMTTY Basically, it worked fine, made over 700 Q's. At the urging of the club, I decided on the new SO Unlimited [i.e. assisted], and that worked OK too except: Every time I clicked on a band map spot, the radio went to FSK-D, and of course wouldn't key. I had the couple of usual N1MM lockouts and re-starting N1MM also caused this change to FSK-D. I'm running 4.58 FW, haven't loaded new in a long time, and N1MM is running 13.10.2, also haven't updated that in quite awhile, both have been working very well. I don't think this is a K3 problem, but wanted to check if anyone else using the minimalist configuration has seen this. 73, Fred K6DGW - Northern California Contest Club - CU in the 2014 Cal QSO Party 4-5 Oct 2014 - www.cqp.org Go SF! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 AFSK RTTY problem
Hi Ron and the group I hope you got your equipment to work on RTTY yesterday but if you didn't I have been there and done that several times. I didn't see anyone else respond so I will share some of my experiences. The first thing on all Windows systems newer than XP, Right click SPEAKERS than select playback devices, then communications and make sure to check "DO NOTHING" This turns off the AVC functions that are used by SKYPE and other similar programs. This may be causing your variations in level to the ALC. AFSK and FSKD use lower SSB on the Elecraft rigs while PSKD and DATA A use upper SSB. Your software must be set to match. My software was designed for other rigs and I must use INVERTED for AFSK or FSKD to make it work. Another variation I have seen to match some other rigs is TX INVERTED only. You should try the TEST position to see if you have the same ALC problem with no RF. It is possible to get RF feedback and or hum if there is a cable problem. I have also seen software do you a favor by switching to USB or "RTTY" after you have set up your transceiver. Needless to say this can cause unexplained problems until I can figure out what happened. I used FSKD in the contest yesterday to transmit and MixW to receive along with the N3FJP logging program. I used the following commands for F1 and F2. F1 kyw W0CZ W0CZ ;rx; F2 kyw 599 ND ND ;rx; . I also did some other F keys as desired. The rx; forces the transmitter to shut down right away after the message. I used the function in the MixW macros but I think other software might have a similar method. If I use the K3 or KX3 utility than I use the COMMAND TESTER tab as the TERMINAL tab filters out all the commands. The MixW, MTTY and other programs often demodulate better than the utility for receiviing. I worked 161 RTTY contacts in the contest yesterday, all hunt and pounce using FSKD, in about 7 hours using 10, 15, 20, 40, and 80 meters. The antenna was my Hy-Gain Hy-Tower with radials. The station was the KX3 and the KXPA100-AT at 100 watts. Someone remarked yesterday that they had a new KX3 KXPA 100 station and they missed the P3 from the K3. I had the same problem and now use the iMic USB sound card from the I/Q jack on the KX3 and ROCKY software to give me a panadaptor display. It is not as nice as the P3 but it sure does work well for finding a contact either in a contest or for rag chewing. One final comment the KXPA100 has done everything I have tried so far. One caution though is PSK31 needs to be run at 50 watts or less because on that mode linearity becomes extremely important. If I operated in the RUN mode instead of HUNT and POUNCE it would also be important to cut my power back to 50 watts or less to prevent overheating the amplifier or the KX3. I hope these comments and suggestions are helpful. 73 and happy hamming in 2014 Ken W0CZ w...@i29.net Sent from my iPad > On Jan 4, 2014, at 2:42 PM, Ron W3ZV wrote: > > I am trying to operate AFSK on 15m in the ARRL RU contest. I have 2 contacts > in the last 2 hours. I am by no means a big gun, but I am usually better than > this. Lineup is K3-KPA500-KAT-500. No problems on receive. Drive is set to > produce about 350 watts from the KPA-500. SWR is below 1.5. As far as I can > tell, baud rate, and shift are okay. I don’t think I am reversed. I know my > signal is getting out, because I get a lot of AGN AGN. What disturbs me is > that my ALC indication is rapidly jumping between 2 to 5 bars. This is not > the 4 solid and 5 flickering. Power out on the KPA500 jumps between 300 and > 400 watts. If anyone has a suggestion to get me back in the fray, I would be > most grateful. > > Ron W3ZV > > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 AFSK RTTY problem
Are you in DATA A mode, or if not do you have compression turned up too far? 73 -KD0TSX On Saturday, January 4, 2014, Ron W3ZV wrote: > I am trying to operate AFSK on 15m in the ARRL RU contest. I have 2 > contacts in the last 2 hours. I am by no means a big gun, but I am usually > better than this. Lineup is K3-KPA500-KAT-500. No problems on receive. > Drive is set to produce about 350 watts from the KPA-500. SWR is below 1.5. > As far as I can tell, baud rate, and shift are okay. I don’t think I am > reversed. I know my signal is getting out, because I get a lot of AGN AGN. > What disturbs me is that my ALC indication is rapidly jumping between 2 to > 5 bars. This is not the 4 solid and 5 flickering. Power out on the KPA500 > jumps between 300 and 400 watts. If anyone has a suggestion to get me back > in the fray, I would be most grateful. > > Ron W3ZV > > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 AFSK RTTY problem
I am trying to operate AFSK on 15m in the ARRL RU contest. I have 2 contacts in the last 2 hours. I am by no means a big gun, but I am usually better than this. Lineup is K3-KPA500-KAT-500. No problems on receive. Drive is set to produce about 350 watts from the KPA-500. SWR is below 1.5. As far as I can tell, baud rate, and shift are okay. I don’t think I am reversed. I know my signal is getting out, because I get a lot of AGN AGN. What disturbs me is that my ALC indication is rapidly jumping between 2 to 5 bars. This is not the 4 solid and 5 flickering. Power out on the KPA500 jumps between 300 and 400 watts. If anyone has a suggestion to get me back in the fray, I would be most grateful. Ron W3ZV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 AFSK RTTY overdrive - no ALC
All cables were removed, other than the LINE IN into the radio, including the line out. Headphones were worn to listen to the monitor audio. (Okay, so I didn't mention the headphones, but they are electrically isolated from everything else.) Chad WE9V On Sun, Nov 23, 2008 at 9:41 PM, K8TB <[EMAIL PROTECTED]> wrote: > One other thought. Are you using the line out to drive your soundcard? And > if so, is your monitor level turned up on the K3? And if so, is anything in > your computer, digital mode software, allowing the incoming sound card audio > to be mixed with the outbound audio? Each software package and audio card > combo is different. There is the possibility that your setup is looping > audio back to the K3. If this is happening, it would be hard to figure out > where the feedback frequency is, and that could be tripping the K3 audio > limiters. > > Pull the line out cable on the K3 while you have the problem, and see if > it disappears. > > tom bosscher k8tb > > > > ___ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 AFSK RTTY overdrive - no ALC
One other thought. Are you using the line out to drive your soundcard? And if so, is your monitor level turned up on the K3? And if so, is anything in your computer, digital mode software, allowing the incoming sound card audio to be mixed with the outbound audio? Each software package and audio card combo is different. There is the possibility that your setup is looping audio back to the K3. If this is happening, it would be hard to figure out where the feedback frequency is, and that could be tripping the K3 audio limiters. Pull the line out cable on the K3 while you have the problem, and see if it disappears. tom bosscher k8tb ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 AFSK RTTY overdrive - no ALC
Okay, all good suggestions. Thanks Jim and Joe.
I didn't stop at just removing the RS-232 cable. I removed EVERY cable to
the K3 other than the single cable for audio in. (I kept the grounding
braid and antenna, but still tested using the TX TEST mode, no RF.)
Tried the FP mic connector. Same behavior.
Shorted out the series resistor on the 20dB attenuator and connected to the
LINE IN on the K3. Cranked up the soundcard output, turned the LINE IN gain
to around 5.
Same problem. Monitor audio sounds fine at 2 bars ALC with no hint of
ticking. Increase either the soundcard output or K3 input gain to get 3
bars ALC and ticking begins. Goes from no ticking to ticking with only one
"click" of the K3 mic/line in gain.
No setting of soundcard output and K3 input gain results in 3 bars more more
of ALC without the ticking sound. No hint of ticking at 2 bars ALC.
Soundcard is an ol' favorite, a Creative Labs PCI 128 CT4750...been working
great for years and scores the 7F on Writelog. Works fine at any output
level with any other radio. Continues to work FB with FT-1000D.
On Sun, Nov 23, 2008 at 7:13 PM, Jim Brown <[EMAIL PROTECTED]>wrote:
> On Sun, 23 Nov 2008 19:54:24 -0500, Joe Subich, W4TV wrote:
>
> >It us likely that
> >the ticking is the computer polling the radio. You will find
> that
> >is due to ground loop ("pin 1") problems.
>
> Ah! That's a source I hadn't thought of, but it's a perfect
> example of a "pin 1 problem" -- you inject noise at a shield
> contact associated with one circuit and it shows up somewhere
> entirely unexpected! I've never heard it, since my serial cable is
> wired with signal returns to the shells on both ends. :)
>
> Yes, I agree with all of your advice -- use the line input, run
> the sound card about 6 dB below it's max output, adjust the line
> in gain accordingly.
>
> Thanks!
>
> Chad -- I still don't understand why you want to use the mic input
> for data. I like to leave my mic plugged into the front panel and
> the sound card plugged into the rear panel. The only change for
> data modes is that I'm feeding Line Out back into the sound card
> so that MMTTY can decode it.
>
> An important difference between the MP and the K3 is that the K3
> has a 20 dB pad in front of the Line In transformer. As Joe
> observes, an additional 20 dB pad outside the radio is too much.
>
> When I'm doing SO2R on SSB, I plug my mic (an EV RE11) into the
> computer and let N1MM keep track of where it should go. It works
> quite well here.
>
> 73,
>
> Jim K9YC
>
>
>
> ___
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>
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RE: [Elecraft] K3 AFSK RTTY overdrive - no ALC
On Sun, 23 Nov 2008 19:54:24 -0500, Joe Subich, W4TV wrote:
>It us likely that
>the ticking is the computer polling the radio. You will find
that
>is due to ground loop ("pin 1") problems.
Ah! That's a source I hadn't thought of, but it's a perfect
example of a "pin 1 problem" -- you inject noise at a shield
contact associated with one circuit and it shows up somewhere
entirely unexpected! I've never heard it, since my serial cable is
wired with signal returns to the shells on both ends. :)
Yes, I agree with all of your advice -- use the line input, run
the sound card about 6 dB below it's max output, adjust the line
in gain accordingly.
Thanks!
Chad -- I still don't understand why you want to use the mic input
for data. I like to leave my mic plugged into the front panel and
the sound card plugged into the rear panel. The only change for
data modes is that I'm feeding Line Out back into the sound card
so that MMTTY can decode it.
An important difference between the MP and the K3 is that the K3
has a 20 dB pad in front of the Line In transformer. As Joe
observes, an additional 20 dB pad outside the radio is too much.
When I'm doing SO2R on SSB, I plug my mic (an EV RE11) into the
computer and let N1MM keep track of where it should go. It works
quite well here.
73,
Jim K9YC
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RE: [Elecraft] K3 AFSK RTTY overdrive - no ALC
Chad,
Start by unplugging the RS-232 (CAT connector). It us likely that
the ticking is the computer polling the radio. You will find that
is due to ground loop ("pin 1") problems.
Read K9YC's stuff again very carefully ... connect a jumper from
pin 5 of the RS-232 connector to the shell (to bypass a choke
in the RS-232 return) and consider putting a jumper across L4
(the rear panel "mic" return) on the KIO3 AF board.
You would also be better served to remove the 20 dB pad and
connect your soundcard interface to the Line input. The K3
will select inputs independently for data modes. By increasing
the audio drive for digital modes (and reducing the gain of the
K3 input) you make it much less sensitive to the RS-232 "spike."
Remember, RS-232 is a +/- 10V (or more) signal. If even a small
amount of that signal flows through the "ground" lead of your mic
input (normally < 10 millivolts) you will have a serious "pin 1
problem."
73,
... Joe, W4TV
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Chad WE9V
> Sent: Sunday, November 23, 2008 6:08 PM
> To: Jim Brown; elecraft@mailman.qth.net
> Subject: Re: [Elecraft] K3 AFSK RTTY overdrive - no ALC
>
>
> Jim,
>
> Thanks. I've seen and read your document previously. Is
> there something specific you are referring me to in your
> document that I already haven't covered? Let me recap and
> add a couple points of clarification:
>
> * It's not an RF problem, as it still exists in TX TEST mode.
> * I do not have a hum/buzz problem.
> * I've used this setup on microphone inputs of other radios,
> no problem. (FT-920,990,1000)
> * I am using audio transformers. "Expensive" solution, but
> it's worked in the past.
> * I am using a ~20dB pad between the soundcard output and iso
> transformer. (5600/560ohm)
> * Duplicate 20dB pad/iso xfmr are on both channels, other
> channel driving FT-1000 no problems. Swapping L/R channels
> has problem follow K3, not cable.
> * I have 1.25" braid bonding K3>computer>FT-1000.
> * I can turn the soundcard output down very low (<20%), but I
> have to turn up the K3 MIC to get any power output.
> * Using my Heil headset directly into the K3, I use a MIC
> setting of 15 on SSB to get 5-6 bars ALC with 0 CMP. Using
> this same MIC=15 setting, I adjust my soundcard output so
> that both the Volume Control and Wave control are both 50%.
> At this setting, I have no ALC and <50W output power (with
> PWR set to 100). I can increase MIC to about 21, where I'll
> have nearly 100W output, but only 2 bars ALC. If I back of
> MIC only one step, to 20, I'll be one bar less than 100W, and
> only one bar ALC. If I increase MIC to 23, I get 3-4 bars
> ALC and the ticking noise. This seems very sensitive, and a
> difficult tradeoff between getting 100W output and having the
> ticking sound (which I'm guessing is some sort of
> clipping/distortion).
>
> Others have mentioned being able to use 5 bars ALC with AFSK
> RTTY. I can't get anything close to that. I'd like to
> reduce the MIC/ALC/output power tradeoff sensitivity. I've
> typically left the MIC gain alone on my rigs, and when
> running AFSK RTTY, I would adjust the soundcard output to get
> full ALC reading with no compression. It seems that I can't
> do that with my K3, only getting 2 bars ALC, and there's a
> fine line (about 2-3 'clicks" on the MIC gain) between full
> output power and ticking/distortion.
>
> So I ask again, is there some specific idea you'd like me to
> try that I haven't covered?
>
> Chad WE9V
>
>
>
> On Sun, Nov 23, 2008 at 3:19 PM, Jim Brown
> <[EMAIL PROTECTED]> wrote:
>
> On Sun, 23 Nov 2008 11:37:17 -0600, Chad WE9V wrote:
>
> >Any ideas out there?
>
> Lots.
>
> http://audiosystemsgroup.com/HamInterfacing.pdf
>
> 73,
>
> Jim K9YC
>
>
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Re: [Elecraft] K3 AFSK RTTY overdrive - no ALC
Because I use the same mic input during SSB operation, keeping the configuration the same regardless of what radio is in that position. The K3 is the only radio that has a line in. And, I did try using the line in to troubleshoot this problem. Due to the 20dB attenuator that I'm using, I had to crank up the sound card output to max, and turn the LINE IN gain up to a whopping 40 (60 is max). Even then, the same problem existed. Very low ALC and not 100W power, and turning it up just a hair more to get 3-4 bars ALC resulted in the ticking/distortion. Chad WE9V On Sun, Nov 23, 2008 at 6:09 PM, Toby Deinhardt <[EMAIL PROTECTED]>wrote: > Just wondering, why not use the line in instead of the microphone input? > > vy 73 de toby > > > ___ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 AFSK RTTY overdrive - no ALC
Just wondering, why not use the line in instead of the microphone input? vy 73 de toby ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 AFSK RTTY overdrive - no ALC
Jim, Thanks. I've seen and read your document previously. Is there something specific you are referring me to in your document that I already haven't covered? Let me recap and add a couple points of clarification: * It's not an RF problem, as it still exists in TX TEST mode. * I do not have a hum/buzz problem. * I've used this setup on microphone inputs of other radios, no problem. (FT-920,990,1000) * I am using audio transformers. "Expensive" solution, but it's worked in the past. * I am using a ~20dB pad between the soundcard output and iso transformer. (5600/560ohm) * Duplicate 20dB pad/iso xfmr are on both channels, other channel driving FT-1000 no problems. Swapping L/R channels has problem follow K3, not cable. * I have 1.25" braid bonding K3>computer>FT-1000. * I can turn the soundcard output down very low (<20%), but I have to turn up the K3 MIC to get any power output. * Using my Heil headset directly into the K3, I use a MIC setting of 15 on SSB to get 5-6 bars ALC with 0 CMP. Using this same MIC=15 setting, I adjust my soundcard output so that both the Volume Control and Wave control are both 50%. At this setting, I have no ALC and <50W output power (with PWR set to 100). I can increase MIC to about 21, where I'll have nearly 100W output, but only 2 bars ALC. If I back of MIC only one step, to 20, I'll be one bar less than 100W, and only one bar ALC. If I increase MIC to 23, I get 3-4 bars ALC and the ticking noise. This seems very sensitive, and a difficult tradeoff between getting 100W output and having the ticking sound (which I'm guessing is some sort of clipping/distortion). Others have mentioned being able to use 5 bars ALC with AFSK RTTY. I can't get anything close to that. I'd like to reduce the MIC/ALC/output power tradeoff sensitivity. I've typically left the MIC gain alone on my rigs, and when running AFSK RTTY, I would adjust the soundcard output to get full ALC reading with no compression. It seems that I can't do that with my K3, only getting 2 bars ALC, and there's a fine line (about 2-3 'clicks" on the MIC gain) between full output power and ticking/distortion. So I ask again, is there some specific idea you'd like me to try that I haven't covered? Chad WE9V On Sun, Nov 23, 2008 at 3:19 PM, Jim Brown <[EMAIL PROTECTED]>wrote: > On Sun, 23 Nov 2008 11:37:17 -0600, Chad WE9V wrote: > > >Any ideas out there? > > Lots. > > http://audiosystemsgroup.com/HamInterfacing.pdf > > 73, > > Jim K9YC > > > > ___ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 AFSK RTTY overdrive - no ALC
On Sun, 23 Nov 2008 11:37:17 -0600, Chad WE9V wrote: >Any ideas out there? Lots. http://audiosystemsgroup.com/HamInterfacing.pdf 73, Jim K9YC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 AFSK RTTY overdrive - no ALC
Radio is in DATA operating mode, with DATA MD set to AFSK A. Not sure what you mean by soundcard setting. I'm using the stereo line out, with isolation transformers on each channel, with left channel going to K3 and right channel going to FT-1000. Audio is fine on FT-1000 TX. Swapping the L/R so that the FT-1000 audio channel is driving the K3 has the same ticking/overdrive issue on the K3, at least until MIC gain is set to only 2 bars. Reducing the soundcard output and then compensating with MIC gain also has the same results. Only 2 ALC bars are allowed, beyond which the ticking sound begins. Chad WE9V On Sun, Nov 23, 2008 at 12:10 PM, Greg <[EMAIL PROTECTED]> wrote: > What setting do you have your soundcard set to? And, do you have the > radio in Data mode and DATA MD set to AFSK, Data-A or FSK-D? > > Greg > AB7R > > > - Original Message - > *From:* Chad WE9V <[EMAIL PROTECTED]> > *To:* elecraft@mailman.qth.net > *Sent:* Sunday, November 23, 2008 9:37 AM > *Subject:* [Elecraft] K3 AFSK RTTY overdrive - no ALC > > I'm no stranger to soundcard RTTY or to my K3, but today I decided to mix > the two and fire up MMTTY on the K3. The first thing I noticed is that > there was a very strange ticking sound in the monitor. While it was > difficult to hear on frequency on another radio, you could hear clicking > off-frequency. > > Long story short, I guess it was due to overdriving. If I backed the mic > gain WAY down, or the soundcard output way down, the clicking went away. > (I'm using FP.L - the same connection as I do for soundcard SSB.) Upon > further investigation, I need to set the MIC gain to light up only 2 bars on > the ALC meter. Anything less and I'm not getting full output power. > Anything more and I'm getting the ticking sound (assumed to be overdrive). > I can't get nowhere near 5 bars of ALC, and this setting is very touchy...a > fine line between full output power and distortion. > > I've used this same soundcard and homebrew interface for many, many years, > on several different radios. It does include isolation transformers and > works fine on SSB. I've also listened to the monitor while in TX TEST mode, > and the same problem exists, so it's not an RF issue with the station. It's > definitely audio related. I've tried FP.L, RP.L, and LINE, all with the > same results. For the LINE, I had to crank up the soundcard to max output > and MIC all the way up to 40 (of 60) just to get 2 bars of ALC and nearly > full output power. Any further and again I hear the ticking/distortion. > > I got the the latest SW (well, prior to 11/18 it was the newest), > 2.63/1.95. > > Any ideas out there? I'd like to run this thing with a few more ALC bars > and have it so it's not so touchy between having distortion and getting full > output power. I've seen emails from others saying they are able to run 5 > ALC bars. Not sure why I can't. > > 73 and thanks, > Chad WE9V > > -- > > ___ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > > -- > > > No virus found in this incoming message. > Checked by AVG - http://www.avg.com > Version: 8.0.175 / Virus Database: 270.9.9/1807 - Release Date: 11/23/2008 > 10:59 AM > > ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 AFSK RTTY overdrive - no ALC
I'm no stranger to soundcard RTTY or to my K3, but today I decided to mix the two and fire up MMTTY on the K3. The first thing I noticed is that there was a very strange ticking sound in the monitor. While it was difficult to hear on frequency on another radio, you could hear clicking off-frequency. Long story short, I guess it was due to overdriving. If I backed the mic gain WAY down, or the soundcard output way down, the clicking went away. (I'm using FP.L - the same connection as I do for soundcard SSB.) Upon further investigation, I need to set the MIC gain to light up only 2 bars on the ALC meter. Anything less and I'm not getting full output power. Anything more and I'm getting the ticking sound (assumed to be overdrive). I can't get nowhere near 5 bars of ALC, and this setting is very touchy...a fine line between full output power and distortion. I've used this same soundcard and homebrew interface for many, many years, on several different radios. It does include isolation transformers and works fine on SSB. I've also listened to the monitor while in TX TEST mode, and the same problem exists, so it's not an RF issue with the station. It's definitely audio related. I've tried FP.L, RP.L, and LINE, all with the same results. For the LINE, I had to crank up the soundcard to max output and MIC all the way up to 40 (of 60) just to get 2 bars of ALC and nearly full output power. Any further and again I hear the ticking/distortion. I got the the latest SW (well, prior to 11/18 it was the newest), 2.63/1.95. Any ideas out there? I'd like to run this thing with a few more ALC bars and have it so it's not so touchy between having distortion and getting full output power. I've seen emails from others saying they are able to run 5 ALC bars. Not sure why I can't. 73 and thanks, Chad WE9V ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
