Re: Audio direct
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I took it that the poster was saying that a direct (via wire) connection
between the radio being demo'ed and the recorder would avoid room echo, background noise, etc. 73 K0PP On Apr 12, 2016 17:58, <[hidden email]> wrote: On Tue, 12 Apr 2016 16:17:34 -0700 Dave Cole <[hidden email]> writes: > What's audio direct? > -- > 73's, and thanks, > Dave (NK7Z) apparently sounds good Bob K3DJC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Hello to the group. I just put my new K3s/100 into service, and have a
question about the Mark frequency to use with AFSK. Before the K3s, I used a SignaLink with my KX3 and MMTTY. With that setup, I set MMTTY to use 915 Hz for the Mark frequency, and everything worked fine. Fiddling with the K3s and its internal USB sound card (I love that!), I can select various higher Mark frequencies using the PITCH button, and set MMTTY accordingly, and the K3 still decodes the RTTY. So my question is, what is the "standard" or common Mark frequency to use for AFSK on the K3? Or is it a matter of personal preference -- which sounds better to my ears when tuning RTTY signals? Also, what bandwidth is commonly used for 170 Hz-shift RTTY? I stocked this K3s with four 8-pole filters, including 400 Hz and 250 Hz. The 250 Hz filter works with RTTY, but the MMTTY X-Y scope pattern looks like I might be pushing things with that narrow a filter. the 400 Hz filter looks better. But David (I think) at Elecraft told me when I made my list of filters that I'd be using 2.1 kHz or 2.8 kHz for RTTY. That doesn't make a lot of sense to me if QRM is present. OTOH, MMTTY is decoding specific tones, so maybe filter width doesn't make much difference. What do the experts say? Thanks for any information. -- 73, Mike N4CF Louisa County, VA USA Elecraft K3s/100 Carolina Windom up 45' http://n4cf.mdodd.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Current thinking is to use a fairly wide filter for RTTY. The
software filters that are applied in the sound card are much narrower, about 50 Hz wide. Lately I've been using the 2.7 KHz roofing filter, with DSP bandwidth set to about 600 Hz. Dave Hachadorian, K6LL Yuma, AZ -----Original Message----- From: Mike Dodd Sent: Tuesday, April 12, 2016 8:03 PM To: [hidden email] Subject: [Elecraft] K3s AFSK frequencies Hello to the group. I just put my new K3s/100 into service, and have a question about the Mark frequency to use with AFSK. Before the K3s, I used a SignaLink with my KX3 and MMTTY. With that setup, I set MMTTY to use 915 Hz for the Mark frequency, and everything worked fine. Fiddling with the K3s and its internal USB sound card (I love that!), I can select various higher Mark frequencies using the PITCH button, and set MMTTY accordingly, and the K3 still decodes the RTTY. So my question is, what is the "standard" or common Mark frequency to use for AFSK on the K3? Or is it a matter of personal preference -- which sounds better to my ears when tuning RTTY signals? Also, what bandwidth is commonly used for 170 Hz-shift RTTY? I stocked this K3s with four 8-pole filters, including 400 Hz and 250 Hz. The 250 Hz filter works with RTTY, but the MMTTY X-Y scope pattern looks like I might be pushing things with that narrow a filter. the 400 Hz filter looks better. But David (I think) at Elecraft told me when I made my list of filters that I'd be using 2.1 kHz or 2.8 kHz for RTTY. That doesn't make a lot of sense to me if QRM is present. OTOH, MMTTY is decoding specific tones, so maybe filter width doesn't make much difference. What do the experts say? Thanks for any information. -- 73, Mike N4CF Louisa County, VA USA Elecraft K3s/100 Carolina Windom up 45' http://n4cf.mdodd.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Mike Dodd
If you are using AFSK, it's best to stick with the standard 2125
frequency, so the second harmonic is outside the 2.7 Khz audio passband. With FSK, you can go lower. My ears like the sound of 915 Hz. -----Original Message----- From: Mike Dodd Sent: Tuesday, April 12, 2016 8:03 PM To: [hidden email] Subject: [Elecraft] K3s AFSK frequencies Hello to the group. I just put my new K3s/100 into service, and have a question about the Mark frequency to use with AFSK. Before the K3s, I used a SignaLink with my KX3 and MMTTY. With that setup, I set MMTTY to use 915 Hz for the Mark frequency, and everything worked fine. Fiddling with the K3s and its internal USB sound card (I love that!), I can select various higher Mark frequencies using the PITCH button, and set MMTTY accordingly, and the K3 still decodes the RTTY. So my question is, what is the "standard" or common Mark frequency to use for AFSK on the K3? Or is it a matter of personal preference -- which sounds better to my ears when tuning RTTY signals? Also, what bandwidth is commonly used for 170 Hz-shift RTTY? I stocked this K3s with four 8-pole filters, including 400 Hz and 250 Hz. The 250 Hz filter works with RTTY, but the MMTTY X-Y scope pattern looks like I might be pushing things with that narrow a filter. the 400 Hz filter looks better. But David (I think) at Elecraft told me when I made my list of filters that I'd be using 2.1 kHz or 2.8 kHz for RTTY. That doesn't make a lot of sense to me if QRM is present. OTOH, MMTTY is decoding specific tones, so maybe filter width doesn't make much difference. What do the experts say? Thanks for any information. -- 73, Mike N4CF Louisa County, VA USA Elecraft K3s/100 Carolina Windom up 45' http://n4cf.mdodd.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Mike Dodd
The optimal band width may depend on how crowded the band is. Wide
filtering may work well for a DXer trying to copy a super weak signal on a quiet band. I only use RTTY in contests when the bands are packed and I have had great results using very narrow roofing filters. John KK9A from: Dave Hachadorian Tue Apr 12 23:54:57 EDT 2016 Current thinking is to use a fairly wide filter for RTTY. The software filters that are applied in the sound card are much narrower, about 50 Hz wide. Lately I've been using the 2.7 KHz roofing filter, with DSP bandwidth set to about 600 Hz. Dave Hachadorian, K6LL Yuma, AZ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Rose
Thanks to all who replied off-list to my question about choosing a Mark
frequency. Now on to a new question.... Last night I was receiving RTTY using MMTTY and the AFSK-A mode on the K3s. This morning I am trying to get the K3s to transmit, but not having much luck. I'm using the internal USB sound card in the K3s. I have successfully configured MMTTY to: 1. Receive and decode tones from the sound card. 2. Key the K3s when I click the TX button in MMTTY. 3. Send tones to the K3s when the TX button is clicked. I can hear the tones in the K3s speaker and headphones. If I choose a different Mark frequency in MMTTY, I hear the expected tones on the K3s. Clearly audio tones are being sent to the K3s. But no RF comes out. I have PWR set to 50W (into a dummy load), and when I hold TUNE, the RF bar graph shows that power level (half scale, 5 bars). But when I click TX in MMTTY, and hear the tones on the K3s, the RF bar graph shows 0 (one bar). What must I do to make the K3s transmit the audio it's receiving from MMTTY? Thanks in advance. -- 73, Mike N4CF Louisa County, VA USA Elecraft K3s/100 Carolina Windom up 45' http://n4cf.mdodd.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by john@kk9a.com
Too narrow a filter results in "smearing" one bit into the next - equivalent to severe multi-path - which causes a degraded signal to noise ratio. While a narrow IF filter may reduce interference from AGC capture, there is a fine line between the improvement in sensitivity due to keeping the strong adjacent frequency signal from "turning down the RF gain" and the loss of SNR due to self- induced multi-path (inter symbol interference). In general one wants a filter that is at least 375-400 Hz wide at the -1 dB points with flat phase delay across the passband. Filters less than 370 Hz (@ -1dB), especially multi-pole crystal lattice/ladder filters, have significant phase non-linearities particularly in the "knee" region that create inter-symbol interference. 73, ... Joe, W4TV On 4/13/2016 9:56 AM, [hidden email] wrote: > The optimal band width may depend on how crowded the band is. Wide > filtering may work well for a DXer trying to copy a super weak signal on a > quiet band. I only use RTTY in contests when the bands are packed and I > have had great results using very narrow roofing filters. > > John KK9A > > > from: Dave Hachadorian > Tue Apr 12 23:54:57 EDT 2016 > > Current thinking is to use a fairly wide filter for RTTY. The > software filters that are applied in the sound card are much > narrower, about 50 Hz wide. Lately I've been using the 2.7 KHz > roofing filter, with DSP bandwidth set to about 600 Hz. > > > Dave Hachadorian, K6LL > Yuma, AZ > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Mike Dodd
VOX on?
73, Fred K6DGW - Northern California Contest Club - CU in the Cal QSO Party 1-2 Oct 2016 - www.cqp.org On 4/13/2016 7:11 AM, Mike Dodd wrote: > Thanks to all who replied off-list to my question about choosing a Mark > frequency. Now on to a new question.... > > Last night I was receiving RTTY using MMTTY and the AFSK-A mode on the > K3s. This morning I am trying to get the K3s to transmit, but not having > much luck. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by john@kk9a.com
I have had really good luck using the 500hz roofing filter and adjusting down to 400Hz with DSP for rag chewing. In contests I will adjust to 350 or even 300Hz, depending on how close signals get bunched together, with very good decode.
I've also made adjustments to AGC, which have also been an improvement. AGC DCY - soft, AGC SLP - 6, AGC THR - 16. All other AGC settings at default. These settings in my location, seem to work the best for me so far. Â Gene, N9TF K3S 10057 ----- Original Message ----- From: [hidden email] To: "elecraft" <[hidden email]> Sent: Wednesday, April 13, 2016 8:56:06 AM Subject: Re: [Elecraft] K3s AFSK frequencies The optimal band width may depend on how crowded the band is. Wide filtering may work well for a DXer trying to copy a super weak signal on a quiet band. I only use RTTY in contests when the bands are packed and I have had great results using very narrow roofing filters. John KK9A from: Dave Hachadorian Tue Apr 12 23:54:57 EDT 2016 Current thinking is to use a fairly wide filter for RTTY. Â The software filters that are applied in the sound card are much narrower, about 50 Hz wide. Â Lately I've been using the 2.7 KHz roofing filter, with DSP bandwidth set to about 600 Hz. Dave Hachadorian, K6LL Yuma, AZ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Mike Dodd
RTTY audio tones are personal choice only affecting the audio at your station. I can use 2125/2295 and you can use 1275/1445 when we communicate with each other. This is analogous to me using a CW pitch of 800 Hz and you using 400 Hz in the same QSO. The local audio tones we each choose have no impact on the other station. Two caveats: 1. With AFSK, but not FSK, transmission, using low tones, e.g., 915/1085, allows their second harmonic to fall within the radio's TX IF passband, e.g., 2800 Hz, creating QRM to the extent of the second harmonic. 2. Most radios show the SSB suppressed carrier frequency in AFSK mode rather than the Mark frequency which is the convention for denoting RTTY. The suppressed carrier frequency will differ from the RF Mark frequency by the amount of the local audio Mark frequency. This usually leads to inconsistent frequencies being communicated, for example, in a spotting network. The K3/K3s, however, show the RTTY Mark frequency on the dial in both AFSK or FSK transmit modes. With most of today's software decoders (MMTTY, 2Tone, GRITTY, Fldigi, MixW, etc.), an IF bandwidth of at least 500 Hz is recommended. The decoding algorithms make use of the sidebands outside the 170 Hz shifted frequencies to decrease error rate. Narrower IF filters may be appropriate in very rare situations where near-by strong signals can be reduced from overloading the IF. But, this comes at a cost of higher RTTY error rate. I seldom, if ever, go below 500 Hz even in the worst of QRM situations. This also means that slightly lower error rate is achievable with the K3/K3s Dual-Tone Filter DISabled, contrary to conventional intuition. For RTTY, AGC should be Off, another conflict with conventional thinking. Ed W0YK _______________________________________________________________________ Mike N4CF wrote: Hello to the group. I just put my new K3s/100 into service, and have a question about the Mark frequency to use with AFSK. Before the K3s, I used a SignaLink with my KX3 and MMTTY. With that setup, I set MMTTY to use 915 Hz for the Mark frequency, and everything worked fine. Fiddling with the K3s and its internal USB sound card (I love that!), I can select various higher Mark frequencies using the PITCH button, and set MMTTY accordingly, and the K3 still decodes the RTTY. So my question is, what is the "standard" or common Mark frequency to use for AFSK on the K3? Or is it a matter of personal preference -- which sounds better to my ears when tuning RTTY signals? Also, what bandwidth is commonly used for 170 Hz-shift RTTY? I stocked this K3s with four 8-pole filters, including 400 Hz and 250 Hz. The 250 Hz filter works with RTTY, but the MMTTY X-Y scope pattern looks like I might be pushing things with that narrow a filter. the 400 Hz filter looks better. But David (I think) at Elecraft told me when I made my list of filters that I'd be using 2.1 kHz or 2.8 kHz for RTTY. That doesn't make a lot of sense to me if QRM is present. OTOH, MMTTY is decoding specific tones, so maybe filter width doesn't make much difference. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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>For RTTY, AGC should be Off, another conflict with conventional
>thinking. Ed is correct on this, but turning AGC off on the K3 causes problems with loud signals due to the hard-limiting and distorting action of the AF Limiter. A better approach with the K3 is to use fast AGC, AGC SLP=0, and AGC THR as high as possible without causing a sound card overload warning on the loudest signals. For RTTY, with my usual gain settings, I find that AGC THR = 17 works well. Dave Hachadorian, K6LL Yuma, AZ . ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by k6dgw
Various people wrote:
> VOX on? > You need some way for MMTTY to switch the K3S between receive and transmit. Sigh.... Please excuse my frustration. My original posting was clear: MMTTY _is_ putting the K3s into transmit and _is_ sending tones to the built-in sound card. I can hear the tones when the K3s is in XMIT, but no RF comes out the antenna connector. The red TX LED on the K3s turns on, and the RF bar graph displays one bar, or zero watts. I can hear the tones in the K3s speaker and phones plugged into the rear panel. There is no need for VOX -- MMTTY puts the K3s into XMIT if PTT is turned on _and/or_ if VOX is turned on. Everything is fine except the K3s is not transmitting the audio from the built-in sound card. I'll keep trying. -- 73, Mike N4CF Louisa County, VA USA Elecraft K3s/100 Carolina Windom up 45' http://n4cf.mdodd.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Mike Dodd
Make sure the TX mark frequency in MMTTY is the same as what you've chosen in
the K3. On 4/13/2016 7:11 AM, Mike Dodd wrote: > Thanks to all who replied off-list to my question about choosing a Mark > frequency. Now on to a new question.... > > Last night I was receiving RTTY using MMTTY and the AFSK-A mode on the K3s. > This morning I am trying to get the K3s to transmit, but not having much luck. > > I'm using the internal USB sound card in the K3s. I have successfully > configured MMTTY to: > > 1. Receive and decode tones from the sound card. > 2. Key the K3s when I click the TX button in MMTTY. > 3. Send tones to the K3s when the TX button is clicked. I can hear the tones > in the K3s speaker and headphones. If I choose a different Mark frequency in > MMTTY, I hear the expected tones on the K3s. > > Clearly audio tones are being sent to the K3s. But no RF comes out. I have PWR > set to 50W (into a dummy load), and when I hold TUNE, the RF bar graph shows > that power level (half scale, 5 bars). > > But when I click TX in MMTTY, and hear the tones on the K3s, the RF bar graph > shows 0 (one bar). > > What must I do to make the K3s transmit the audio it's receiving from MMTTY? > > Thanks in advance. > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Mike Dodd
You've run into a common problem: poor reading comprehension.
On 4/13/2016 9:26 AM, Mike Dodd wrote: > Various people wrote: > > >> VOX on? >> You need some way for MMTTY to switch the K3S between receive and transmit. > > Sigh.... Please excuse my frustration. > > My original posting was clear: MMTTY _is_ putting the K3s into transmit and > _is_ sending tones to the built-in sound card. I can hear the tones when the > K3s is in XMIT, but no RF comes out the antenna connector. > > The red TX LED on the K3s turns on, and the RF bar graph displays one bar, or > zero watts. I can hear the tones in the K3s speaker and phones plugged into > the rear panel. > > There is no need for VOX -- MMTTY puts the K3s into XMIT if PTT is turned on > _and/or_ if VOX is turned on. > > Everything is fine except the K3s is not transmitting the audio from the > built-in sound card. > > I'll keep trying. > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Dave Hachadorian-2
On RTTY, AF limiting doesn't occur because I run the AF Gain very low. I
only need to hear the presence or absence of a RTTY signal. On CW, I agree, because I turn the AF Gain up higher. But, I also run a lower AGC THR than I would on RTTY. Thus, when changing modes between CW and RTTY, it is easier to leave AGC setup for CW and just turn it On or Off rather than go into CONFIG and change AGC THR. For RTTY, though, slow AGC will yield a lower error rate than fast AGC with the modern software decoders. Ed W0YK __________________________________________________________ Dave K6LL wrote: >Ed is correct on this, but turning AGC off on the K3 causes >problems with loud signals due to the hard-limiting and >distorting action of the AF Limiter. A better approach with the >K3 is to use fast AGC, AGC SLP=0, and AGC THR as high as >possible without causing a sound card overload warning on the >loudest signals. For RTTY, with my usual gain settings, I find >that AGC THR = 17 works well. Ed W0YK wrote: >>For RTTY, AGC should be Off, another conflict with conventional >>thinking. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Wes Stewart-2
OK, I think I have it straight now. Thanks to all, and especially to
Gene, N9TF who emailed me off-list. For the benefit of all, here is what I learned today: I _do_ need to turn on VOX if I want to use a logging program that grabs the USB control port (COM5 in my case). I had MMTTY set up to key the rig on COM5, but it occurred to me that I didn't have my logging software open at that time. So PTT via COM5 is out, VOX is in. I don't normally use VOX, so my MENU: VOX gain was set to 0. Once I turned it up to 8 or higher, the MMTTY tones keyed the rig just fine. MENU: MIC SEL is automatically set to LINE IN when data mode AFSK-A is selected. This automatically reverts to my normal FP mic selection when I switch back to a voice mode. The mic gain must be set for 5 bars on the ALC meter. On my K3s, this is a MIC setting of only 2, and the fifth bar doesn't flicker as it does with voice, because a steady tone is being transmitted. The MIC gain control sets the LINE IN gain. This automatically reverts to my normal mic gain when I switch back to a voice mode. How convenient is that! THANK YOU, Elecraft. Bottom line (on my K3s, at least): * DATA MD = AFSK-A * VOX on * MENU: VOX GN = 8 - 10 * MENU: MIC SEL = LINE IN (automatic with AFSK-A) * MIC gain = 2 * PITCH = Mark frequency and shift to match those set in MMTTY MMTTY: * Setup, Sound card = USB audio CODEC * Setup, Misc device identifiers = RX 0, TX 1 (TX 0 is the PC's speakers) * Setup, TX, radio command, port = NONE if using logging software that needs the COM port I think that about covers it. Thanks again to all who offered suggestions. -- 73, Mike N4CF Louisa County, VA USA Elecraft K3s/100 Carolina Windom up 45' http://n4cf.mdodd.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Mike,
This was a very timely thread for me in that I have been trying to get MMTTY working with the K3s and missed any contacts with the FT4 on RTTY and only made a RTTY Q with the VK0 because I used the memories in the K3s to send RTTY via FSK, not MMTTY. In fact, what I was transmitting was just a key down and not the RTTY I thought I was putting out and I was inadvertently QRMing every time I transmitted. I asked on the MMTTY yahoo group about how to sync the K3s properly and a very helpful ham from VK finally helped me figure out what I was doing wrong. The info in this thread is also very helpful. I did find that for some reason when I would select AFSK A, it was still set at FSK D and I must not have properly saved the AFSK setting. Now I have it correctly set and its working beautifully. I am so satisfied with the K3s, it is just a magnificent piece of electronics and makes my day better. 73, Gary KA1J > OK, I think I have it straight now. Thanks to all, and especially to > Gene, N9TF who emailed me off-list. > > For the benefit of all, here is what I learned today: > > I _do_ need to turn on VOX if I want to use a logging program that grabs > the USB control port (COM5 in my case). I had MMTTY set up to key the > rig on COM5, but it occurred to me that I didn't have my logging > software open at that time. So PTT via COM5 is out, VOX is in. > > I don't normally use VOX, so my MENU: VOX gain was set to 0. Once I > turned it up to 8 or higher, the MMTTY tones keyed the rig just fine. > > MENU: MIC SEL is automatically set to LINE IN when data mode AFSK-A is > selected. This automatically reverts to my normal FP mic selection when > I switch back to a voice mode. > > The mic gain must be set for 5 bars on the ALC meter. On my K3s, this is > a MIC setting of only 2, and the fifth bar doesn't flicker as it does > with voice, because a steady tone is being transmitted. > > The MIC gain control sets the LINE IN gain. This automatically reverts > to my normal mic gain when I switch back to a voice mode. > > How convenient is that! THANK YOU, Elecraft. > > Bottom line (on my K3s, at least): > > * DATA MD = AFSK-A > * VOX on > * MENU: VOX GN = 8 - 10 > * MENU: MIC SEL = LINE IN (automatic with AFSK-A) > * MIC gain = 2 > * PITCH = Mark frequency and shift to match those set in MMTTY > > MMTTY: > * Setup, Sound card = USB audio CODEC > * Setup, Misc device identifiers = RX 0, TX 1 (TX 0 is the PC's speakers) > * Setup, TX, radio command, port = NONE if using logging software that > needs the COM port > > I think that about covers it. Thanks again to all who offered suggestions. > > -- > 73, Mike N4CF > Louisa County, VA USA > Elecraft K3s/100 > Carolina Windom up 45' > http://n4cf.mdodd.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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You and at least two dozen guys I logged doing something similar And I would venture to guess that most of them were running K3s.
I emailed one of these guys and got back the confession that 1) yes he was using a K3 and 2) he was sending radioteletype with the paddle. The inadvertent writing of A to B while attempting to engage Split accounts for the QRM on the DX freq, the 15 WPM RTTY with the long unmodulated tail results from the other. (This assumes that the operator actually knows that he is supposed to be operating split... too many don't) On Apr 14, 2016, at 5:35 AM, "Gary Smith" <[hidden email]> wrote: > In fact, what I was > transmitting was just a key down and not > the RTTY I thought I was putting out and I > was inadvertently QRMing every time I > transmitted. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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This is not AGSK A mode. It is FSK D.
Sent from my iPhone ...nr4c. bill > On Apr 17, 2016, at 9:38 AM, Triconet_2 <[hidden email]> wrote: > > You and at least two dozen guys I logged doing something similar And I would venture to guess that most of them were running K3s. > > I emailed one of these guys and got back the confession that 1) yes he was using a K3 and 2) he was sending radioteletype with the paddle. > > The inadvertent writing of A to B while attempting to engage Split accounts for the QRM on the DX freq, the 15 WPM RTTY with the long unmodulated tail results from the other. (This assumes that the operator actually knows that he is supposed to be operating split... too many don't) > >> On Apr 14, 2016, at 5:35 AM, "Gary Smith" <[hidden email]> wrote: >> >> In fact, what I was >> transmitting was just a key down and not >> the RTTY I thought I was putting out and I >> was inadvertently QRMing every time I >> transmitted. > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Yes, my problem was not when sending RTTY
with a paddle, it was when using MMTTY and I was trying to send FSK. All I could hear was one tone, not the two tones of mark space. I thought it was nice not to hear the two tones when listening. I did not realize I could not properly key the K3s without an additional hardware. Now I have the K3s set to use AFSK A so that I don't need to have additional hardware/connections and no longer use the paddles to send, only MMTTY. When I use MMTTY I have to have the PTT-KEY set to OFF-OFF. When I switch to N1MM I have to have it set to DTR-RTS. I have problems of locked down transmission if I don't and switch to CW from the RTTY setting. As a result, I can't have both MMTTY and N1MM running at the same time. I'm guessing this may have to do with a RTS setting in the software but haven't had time to work it out. 73, Gary KA1J > This is not AGSK A mode. It is FSK D. > > Sent from my iPhone > ...nr4c. bill > > > > On Apr 17, 2016, at 9:38 AM, Triconet_2 <[hidden email]> wrote: > > > > You and at least two dozen guys I logged doing something similar And I would venture to guess that most of them were running K3s. > > > > I emailed one of these guys and got back the confession that 1) yes he was using a K3 and 2) he was sending radioteletype with the paddle. > > > > The inadvertent writing of A to B while attempting to engage Split accounts for the QRM on the DX freq, the 15 WPM RTTY with the long unmodulated tail results from the other. (This assumes that the operator actually knows that he is supposed to be operating split... too many don't) > > > >> On Apr 14, 2016, at 5:35 AM, "Gary Smith" <[hidden email]> wrote: > >> > >> In fact, what I was > >> transmitting was just a key down and not > >> the RTTY I thought I was putting out and I > >> was inadvertently QRMing every time I > >> transmitted. > > > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:[hidden email] > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to [hidden email] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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