Re: [digitalradio] Re: Making RSID de rigueur, for Olivia

2010-03-02 Thread Leigh L. Klotz, Jr WA5ZNU
In fldigi we (well, Stelios did the work) went further: when you turn on RSID, it's still off for PSK-31, PSK-63, RTTY, and CW. It would be good if Patrick FC6TE and Simon HB9DRV would do the same; that is, make it easy to turn on for the uncommon modes, yet have it off for the common ones unles

Re: [digitalradio] FCC comments further on ROS

2010-03-01 Thread Leigh L. Klotz, Jr WA5ZNU
On 03/01/2010 04:06 PM, Andy obrien wrote: Thank goodness sanity has prevailed! Leigh/WA5ZNU > > From Jose's web site > http://rosmodem.wordpress.com/2010/03/02/fcc-ros-legal-in-usa/ > FCC: ROS LEGAL IN USA > By José Alberto Nieto Ros > ... > "According to the technical paper and the audio file

Re: [digitalradio] Running WSPR and WSJT with VOX-type PTT under Linux

2008-12-20 Thread Leigh L. Klotz, Jr WA5ZNU
I sent a patch in to WSJT converting from DTR/RTS based RS232 PTT to a serial command string (as an option); I showed sending "TX;" and "RX;" for example. They said no thanks, and don't support hamlib either. Not much you can do... Leigh/WA5ZNU > This has only been tested on Ubuntu 8.10 with a

[digitalradio] ZF2NU DXpedition (all next week)

2008-03-22 Thread Leigh L. Klotz, Jr.
We will be QRV on Grand Cayman Island starting Easter Monday for one week. We plan to operate digital modes using fldigi and an Elecraft K3/100 to a Cushcraft R6 20-6 and a long-wire on on 40m. More details and QRV schedules for other events linked from http://www.QRZ.com/ZF2NU We will be doi

Re: [digitalradio] Does K2 work OK for wider digital modes?

2008-03-13 Thread Leigh L Klotz, Jr.
I used my K2 for wide Olivia when it first came out. I had no trouble with MFSK. The K2 has a peculiarity, though, in that it can have a slight (less than 10Hz) frequency shift between filter settings. It always uses its wide filter for TX, so you need to use RIT, or engage the TX lock feat

Re: [digitalradio] SSB on 14070

2008-02-06 Thread Leigh L Klotz, Jr.
I have ben hearing what sounds like Vietnamese on 14.070 LSB. I suspect bootleg operation. FYI I used notch filtering to eliminate the strong psk signals. A few weeks ago I heard both sides of an SSB QSO in English. I suspect a different problem of cox keying there... Leigh/WA5ZNU On Wed, 6

Re: [digitalradio] Re: Logging for MultiPSK and DM780

2008-02-03 Thread Leigh L Klotz, Jr.
Just use HTTP and REST. It works in all languages. You can define commands as URLs. You can post your log entries as ADIF file snippets. Use a port other than port 80 for obvious reasons. Most modern languages have a great HTP client library so you don't have to roll your own client for yo

Re: [digitalradio] Re: Logging for MultiPSK and DM780

2008-02-02 Thread Leigh L Klotz, Jr.
TCP is reliable. UDP is unreliable. Aside from sending data that can be safely dropped, such as sound packets, there is no reason for aplication programs to use UDP. Leigh/WA5ZNU On Fri, 1 Feb 2008 5:07 am, Simon Brown wrote: > An advantage of UDP is that the logger could be on another platform /

Re: [digitalradio] Re: General questions about SSTV/Quick Guide

2008-01-26 Thread Leigh L Klotz, Jr.
And fldigi. Leigh/WA5ZNU On Sat, 26 Jan 2008 9:12 am, Andrew O'Brien wrote: > MFSK16 with pictures. Multipsk and Mixw allow for a digital QSO with > MFSK16 and switch to a narrow mode picture transfer method when the > users decide.

Re: [digitalradio] QRV 40m Narrow-Band SSTV

2008-01-25 Thread Leigh L Klotz, Jr.
That's why the MFSK kbd stuff is useful. More generally, you ought to be able to switch from any kbd data mode to any width-compatible image mode and use RSID if the digimode itself doesn't already do both. Leigh/WA5ZNU Skip KH6TY wrote >> I can understand why regular SSTV goes along with SSB ph

Re: [digitalradio] Re: Redefining SSTV operations

2008-01-23 Thread Leigh L Klotz, Jr.
I don't have a problem with various kinds of UI, but I do know some people care intensely. One of the things I hope to accomplish with the znudigi experiment is a separation of modem from UI. I amworking with several different UI designs for znudigi clients, and hoping that others will too. E

Re: [digitalradio] Re: Redefining SSTV operations

2008-01-23 Thread Leigh L Klotz, Jr.
rown wrote: > It could be done in 500 Hz - why are you looking for the 500Hz > bandwidth? > > Simon Brown, HB9DRV > > - Original Message ----- > From: "Leigh L Klotz, Jr." <[EMAIL PROTECTED]> > > >> I didn't know it fit iin 500Hz. I will

Re: [digitalradio] Re: Redefining SSTV operations

2008-01-23 Thread Leigh L Klotz, Jr.
ALE. > >> dialog box for image types, and in the case of MultiPSK and PocketDigi, > >> it would send the RSID for MFSK. > > It is sure very comfortable to receive a RS ID as the tuning is > immediatly perfect. > > But you would need a specific QRG for these pictures

Re: [digitalradio] Re: Redefining SSTV operations

2008-01-23 Thread Leigh L Klotz, Jr.
u looked at Digital SSTV based on HamDRM? I've just compiled the > HamDRM DLL and am hoping to have this integrated in DM780 in February > sometime. > > Simon Brown, HB9DRV > > - Original Message - > From: "Leigh L Klotz, Jr." <[EMAIL PROTECTED]>

Re: [digitalradio] Re: Redefining SSTV operations

2008-01-23 Thread Leigh L Klotz, Jr.
MFSK decoder (to decode the SSTV prefix) plus > the Olivia decoder. > > It would be better to do MFSK16 (+MFSK SSTV) only. > > 73 > > Patrick > >> - Original Message - >> >> From: Leigh L Klotz, Jr. >> >> To: digitalradio@yahoogroups

Re: [digitalradio] FIR Filters

2008-01-21 Thread Leigh L Klotz, Jr.
I think maybe what you want is MATLAB. It has its own Parks-McClellan designer, firpm. It also has an estimator for required order, given band edges and desired amplitudes. You can then trivially plot the h(n), error, etc from within Matlab. I don't know if the free clones of Matlab (Scllab

Re: [digitalradio] Re: Redefining SSTV operations

2008-01-21 Thread Leigh L Klotz, Jr.
instead of soft decision) > and a bigger RS coding would be necessary, which is not a big problem > but days are too short... > > 73 > > Patrick > >> - Original Message - >> >> From: Leigh L Klotz, Jr. >> >> To: digitalradio@yahoogroups

Re: [digitalradio] FIR Filters

2008-01-21 Thread Leigh L Klotz, Jr.
Simon, You can use znudigi to do this. See http://wa5znu.org/2008/znudigi-rpsk You will need to recompile it, but it is in Java and the source is provided. The FIRFilter is there, and the designer is separated out. Leigh/WA5ZNU On Mon, 21 Jan 2008 12:46 am, Simon Brown wrote: > Hi Sergio, > >

Re: [digitalradio] Re: Redefining SSTV operations

2008-01-20 Thread Leigh L Klotz, Jr.
Patrick, The advantage of the MFSK analog picture mode is that it is already widely implemented, and almost all implementors of MFSK have it. Your RSID is now available in open source C++ pocketdigi so I suspect it will be incorporated into more programs as well. Put the two together and the

Re: [digitalradio] Re: Redefining SSTV operations

2008-01-19 Thread Leigh L Klotz, Jr.
The MFSK picture mode isn't tied to MFSK in any logical way, only in the programs. It doesn't use MFSK modulation for the picture, for example. I think your plan is good and intend to put it into place, but others with production digimode programs are better situated to do it now. 73, Leigh/WA

Re: [digitalradio] HAARP and Moon Echo of HAARP received well in South Bend, Indiana 6.7925

2008-01-19 Thread Leigh L Klotz, Jr.
I recorded the end of session 1 and the start of 2. As Jose and others report, session 1 was better. The exciter was clear on 2 but very few echoes, mostly right at the beginning, as far as I can tell. On session 1 the echo was clearly audible, though faded out. At best the exciter was 44 -/- 6

Re: [digitalradio] Re: Redefining SSTV operations

2008-01-19 Thread Leigh L Klotz, Jr.
I have quiet enjoyed the few MFSK pix I have sent, narrowband. The chatter is all via MFSK, and the bandwidth is narrow, of course. Fldigi implements it so DRM780 might as well. 73, Leigh/WA5ZNU On Sat, 19 Jan 2008 2:39 pm, Andrew O'Brien wrote: > On 20M currently, there are two stations. They

Re: [digitalradio] Re: WSJT Advanced features

2008-01-13 Thread Leigh L Klotz, Jr.
This brings to mind the converse: it would be interesting if possible to have multiple TX going in the same passband on JT65. Because of the synchronized time frame start time, you could hold several simultaneous odd- or even-minute qsos, somethich which is not possible to do on other digital

Re: [digitalradio] Software for the digital ham that multi-tasks while sleeping ?

2008-01-11 Thread Leigh L Klotz, Jr.
This would be an excellent client to write for znudigi. 73, Leigh/WA5ZNU On Fri, 11 Jan 2008 3:51 am, Andrew O'Brien wrote: > If you are like me, there is SO MUCH happening in the amateur radio > digital world that it is hard to keep up with , more fun to be had > than can be squeezed in to 24 hou

Re: [digitalradio] Re: Licensing of Pactor modes

2008-01-04 Thread Leigh L Klotz, Jr.
RX only wouldn't need to worry about turnaround times.. Hmmm Leigh/WA5ZNU On Fri, 4 Jan 2008 5:23 pm, Dave AA6YQ wrote: > Those who have considered implementing Pactor 2 and/or 3 report two > challenges: > > 1. The documentation provided is insufficient > > 2. The turnaround time requirements

Re: [digitalradio] Re: Standard sideband for digi modes?

2008-01-01 Thread Leigh L Klotz, Jr.
And MFSK, Olivia, and Domino EX. They are (or can be) <=500Hz. Leigh/WA5ZNU >> and you can always flick the REVERSE SWITCH. This is true for all >> narrow digital modes with the exception of QPSK31. > [snip] >> 73 de Demetre SV1UY >> > > I forgot to mention that the REVERSE SWITCH is only pres

Re: [digitalradio] Re: FCC: "Petition to Kill Digital Advancement"

2007-12-29 Thread Leigh L Klotz, Jr.
Were you able to get an ID from the P3 station? Leigh/WA5ZNU On Sat, 29 Dec 2007 11:53 am, Sholto KE7HPV wrote: > us. But then the transmission changes straight to Pactor-3 and wipes > everyone out for at least 5 minutes.

Re: [digitalradio] What frequency for XM/Sirius digital signals

2007-12-23 Thread Leigh L Klotz, Jr.
And terrestrial repeaters in the same range, a little-known fact: http://en.wikipedia.org/wiki/XM_Radio#Technology There is also a little bit of info about the encodings and modulation there, and in references. 73, Leigh/WA5ZNU On Sun, 23 Dec 2007 7:53 am, Michael Keane K1MK wrote: > At 11:22 P

Re: [digitalradio] Re: Winlink Can Be Reliable in Emergencies

2007-12-14 Thread Leigh L Klotz, Jr.
or ARQ. > > Methinks something stinks here:) > > David > KD4NUE > > -Original Message- > From: digitalradio@yahoogroups.com > [mailto:[EMAIL PROTECTED] On > Behalf Of Leigh L Klotz, Jr. > Sent: Friday, December 14, 2007 5:42 PM > To: digitalradio@yahoogro

Re: [digitalradio] Re: Winlink Can Be Reliable in Emergencies

2007-12-14 Thread Leigh L Klotz, Jr.
Could you set up an automatic archive of these PACTOR transmissions, like the various ones that exist for SSTV? Leigh/WA5ZNU > --- In digitalradio@yahoogroups.com, "Sholto Fisher" <[EMAIL PROTECTED]> > wrote: >> For instance I am monitoring a Pactor 2 transmission on 30m that has > been on >> g

Re: [digitalradio] Google sets sights on US airwaves

2007-12-02 Thread Leigh L Klotz, Jr.
Originally Google asked that the spectrum not be sold, but be bid on a per-conection basis by smart radios that get bids from providers for the lowest cost for each connection. (In Europe, you can choose your GSM provider for calls and there are lots of them, but it isn't automated like that.)

Re: [digitalradio] Re: digital voice within 100 Hz bandwidth

2007-11-16 Thread Leigh L Klotz, Jr.
One thing to try might be an encoding that takes more time to send than the audio it encodes. If blank space compression is used, the effect can be reduced. But there is nothing that says the encoding must be able to transmit voice in 100% of real time to be interesting or useful. 73, Leigh/W

[digitalradio] Weird whooping sound

2007-11-11 Thread Leigh L. Klotz, Jr.
I heard a weird whooping sound, about 1Hz and ranging from 14.069.8 to 14.070.4. It changed to about half that width and twice that speed just before 0500Z for a few seconds, then went back. It might be RFI of course, but it might not. http://wa5znu.org/2007/11/whoop/whoop.wav It's still goin

Re: [digitalradio] How to check my PSK modulation?

2007-10-26 Thread Leigh L Klotz, Jr.
Rob, If you can get someone to send you a screenshot of what your signal looks like, it will go a long way towards solving your problems and won't cost anything. It will help tell whether your problem is overmodulation or RF feedback. Overmodulatio looks like many copies (sidebands) of the si

Re: [digitalradio] Newbie question...

2007-10-18 Thread Leigh L Klotz, Jr.
It will produce two signals, one in the PSK waterfall range, and one a ways away from it, probably causing qrm for CW operators, but both will be copyable.What band were you thinking of? If this is a homebrew small project, the 80m Warbler is about the simplest design for an SSB transceive

Re: [digitalradio] ALE , J65, Pactor 1 thru ?, etc.

2007-10-03 Thread Leigh L Klotz, Jr.
I happened to see AA6YQ on the air on just last week on PSK31. I couldn't copy the other half but I believe the OM was asking him questions about dxlab. I was going to give a call but QSB set in. 73, Leigh/WA5ZNU On Wed, 3 Oct 2007 7:41 am, Rick KV9U wrote: > About the last person on earth t

Re: [digitalradio] Re: jt65a

2007-09-24 Thread Leigh L Klotz, Jr.
WSJT features an "auto" checkbox, which, when enabled, automatically switches to the next message in sequence, after each over. The transmit times for both stations are defined and are on odd/even minute boundaries. From the documentation at http://2yf444 (select the English PDF) Auto: toggl

Re: [digitalradio] Re: The decline of Olivia and DominoEX

2007-09-14 Thread Leigh L Klotz, Jr.
I think MARS adopted it so it has some momentum there. Are they still using it? Leigh/WA5ZNU On Fri, 14 Sep 2007 12:06 am, Simon Brown wrote: > Question - what's so special about MT63 - where / when is it used? From > what > I read it's not so great for chit-chat. > > Simon Brown, HB9DRV

Re: [digitalradio] The decline of Olivia and DominoEX

2007-09-10 Thread Leigh L Klotz, Jr.
Tagging any CQ digimode transmission with a visual "CQ" at the end (even without a mode ID) will also increase responses. You can use the same frequency-domain font code from fldigi, as it is 2 chars wide at a minimum. 73, Leigh/WA5ZNU On Mon, 10 Sep 2007 9:57 am, Simon Brown wrote: > I think ma

Re: [digitalradio] PSK31 Instant Messaging

2007-09-07 Thread Leigh L Klotz, Jr.
t; around tonight de K3UK" .  Simple one or two line instant messages.  > Folks could have SPK31 software that supports a search feature where it > 'seeks" up and down for perhaps 100Hz, that should get everyone.  Of > course, we would  "QRL?" first. > >

Re: [digitalradio] Questions about digital

2007-09-07 Thread Leigh L Klotz, Jr.
Dave, Welcome aboard. If you are interested in HF digital modes, you will likely get other good answers from others, but for now you might be interested in a presentation I did for our local club's Field Day GOTA location when we had a PSK31 digital station. There are some other resources on

Re: [digitalradio] PSKMAIL ?

2007-09-02 Thread Leigh L Klotz, Jr.
1. Stick CD into computer 2. Reboot How much simpler can it get? On Sun, 2 Sep 2007 4:19 pm, Rick wrote: > I try to keep in mind that when I am looking at new technology > solutions > that can be used for emergency communications, it has to be as simple > as > possible and is used by many others

Re: [digitalradio] Re:Linux capable digital interfaces

2007-08-30 Thread Leigh L Klotz, Jr.
Skip, Do you use the blue one for $7.50 or the green one for $6.95, or are they the same? Also they have 2 identical blue ones, ADA-HE-280B and HE-280B. All 3 say they use the same chipset. I bought one of the blue ones at a flea market and it seemed to have some rolloff issues, but I can't qu

[digitalradio] digimode bandplans shortlist [was: Digital modes galore!]

2007-08-14 Thread Leigh L. Klotz, Jr.
On the heels of Andy's full list of modes, I've taken an an idea I had a while back and developed an automatic method for picking a shortlist of likely modes given a frequency. I did this as a proof-of-concept for fldigi, to allow the short list of mode choices to be automatically configured b

Re: [digitalradio] Re: Comments to ARRL on New Digi Protocols

2007-06-06 Thread Leigh L Klotz, Jr.
Careful with the free version... http://www.theregister.com/2007/06/05/microsoft_mvp_threats/ Leigh/WA5ZNU > For free software from Microsoft there is - > http://msdn.microsoft.com/vstudio/express/ > > I have written a lot of software using the free versions, I have now > purchased the full versio

Re: [digitalradio] Re: Here's a silly thought.

2007-05-31 Thread Leigh L Klotz, Jr.
I think a lot are RF feedback, not just overdriving...a good test is to try the digimode RX program on CW and see if it has the same problems there. If not, the problem isn't on the RX side. 73, Leigh/WA5ZNU On Thu, 31 May 2007 7:19 pm, Brian Kassel wrote: > Guys: > > I have found that *MANY*, b

Re: [digitalradio] Re: Here's a silly thought.

2007-05-30 Thread Leigh L Klotz, Jr.
Last year there was an OM about 6 miles from me who regularly ran 250W on PSK. In QSO after QSO, he was told he had RF feedback in his signal, he he pointedly ignored it all, saying he had a clean signal and wasn't overdriving, and it was all just poor receiver front ends. It wasn't...the RF

Re: [digitalradio] Beginner Digital Guy

2007-05-19 Thread Leigh L. Klotz, Jr.
Jeff, I wrote a handout for our club's field day GOTA station PSK31 operation a couple of years ago. It was designed for new hams and non-hams. You still might find it a useful introduction, though. http://wa5znu.org/psk/ It doesn't cover the most cutting-edge stuff you'll find on this Yahoo g

Re: [digitalradio] Digital Voice Repeaters on HF

2007-05-14 Thread Leigh L Klotz, Jr.
, W2XJ wrote: > The problem is that if this is a store and forward repeater you will > accumulate too much time delay. > > > Leigh L Klotz, Jr. wrote: >> Here is a related idea: We have seen with JT65a that sometimes when we >> think the band is closed, it is just very

Re: [digitalradio] Digital Voice Repeaters on HF

2007-05-14 Thread Leigh L Klotz, Jr.
Here is a related idea: We have seen with JT65a that sometimes when we think the band is closed, it is just very poor instead. W1AW, which one can sometimes hear all lone on the high bands (due to its power and antennas) shows us this as well. I..e., what we assume is no communications may i

Re: [digitalradio] Digital Voice Repeaters on HF (Re: Nearly Vacant HF Spectrum)

2007-05-13 Thread Leigh L Klotz, Jr.
I would love to try a DV repeater on upper HF...10m soulds like the perfect spot. Repeaters are legal there and phone is legal so it should be? Also, on 17m don't go below 18.068, hihi. 73, Leigh/WA5ZNU

Re: [digitalradio] Digi Voice: No Bandwidth Limit

2007-05-02 Thread Leigh L Klotz, Jr.
I would like to try some of the DRM-based modes which allow you to send voice, pictures, and text. I suppose I could do thos on 160m, now that I think of it. 73, Leigh/WA5ZNU On Wed, 2 May 2007 7:58 am, [EMAIL PROTECTED] wrote: > If it is true that others are not being held back, what actual new

Re: [digitalradio] Re: Hams should have encryption

2007-04-28 Thread Leigh L Klotz, Jr.
John, You might want to try PocketDigi for Windows or Windows Pocket PC. It does a great job on CW over 25WPM and is free. 73, Leigh/WA5ZNU On Sat, 28 Apr 2007 3:53 pm, John Champa wrote: > So there should NOT be any problemof course, CW above 25 WPM might > as > well be encrypted as far as

Re: [digitalradio] We need a competition

2007-04-27 Thread Leigh L Klotz, Jr.
If there were some party willing to set up a P3 modem with all traffic decoded to a web page, I would contribute to purchase of the modem. I suspect if everyone who complains about Pactor 3 here contributed $20 it would just about buy one. The DXTuners people do this with Icom receivers and i

Re: [digitalradio] Re: Straight talk on JT65a

2007-04-20 Thread Leigh L Klotz, Jr.
I think W1JT has done an excellent job not only with the DSP and mode design but also with the software, making it open souirce, documenting it well both technically and for users, and seeding further development with a group of others. I don't mean to detract from this work at all. I think th

[digitalradio] Straight talk on JT65a

2007-04-20 Thread Leigh L Klotz, Jr.
Some of the supposed benefits of JT65a are real, but some are illusory. I noticed that I could plainly heard tones and quite easily see them on the waterfall at about the same level of visibility as a nearby Olivia QSO, yet WSJT was reporting -20dB or son S/N. Reading the paper [1], I found tha

Re: [digitalradio] protocol for cq

2007-04-20 Thread Leigh L Klotz, Jr.
I think this is a great idea for all digital modes. I did a prototype in gmfsk of "Vaisual CQ" and I think it is more useful than the visual mode ID that many digimode programs now sport. I don't know how well it would work for JT65a if the goal is readability into the noise, but with PSK, it w

[digitalradio] WSJT recompile

2007-04-19 Thread Leigh L Klotz, Jr.
I am working on recompiling WSJT, as I mentioned to Cesco. I have got it down to one unsatisfied link error, probably due to compiler version skew (gmttime_ in Audio.so). One goal is to change the PTT routines to offer more options...with my K2 I use the RS232 command set, not the control line

Re: [digitalradio] JT65A and future of slow MFSK

2007-04-17 Thread Leigh L Klotz, Jr.
The codebase appears to be GPL so this should be achievable in a short timeframe. Leigh/WA5ZNU On Tue, 17 Apr 2007 4:06 pm, expeditionradio wrote: > Perhaps a fixed frequency MFSK system could be developed with slightly > faster throughput and a little more bandwidth... decoding at -18dB SNR > to

Re: [digitalradio] I cannot believe it!!

2007-04-14 Thread Leigh L Klotz, Jr.
Is this under WINE? 73, Leigh/WA5ZNU On Sat, 14 Apr 2007 7:18 pm, Darrel Smith wrote: Compaq running Linux > from the pskmail live disc.

Re: [digitalradio] JT65A anyone in the bay area?

2007-04-12 Thread Leigh L Klotz, Jr.
Maybe you could demo other modes also.  I am in CM87xj/mountain > view.  > >> - Original Message ----- >> >> From: Leigh L Klotz, Jr. >> >> To: [EMAIL PROTECTED] >> >> Sent: Thursday, April 12, 2007 2:34 PM >> >> Subject: Re: [dig

Re: [digitalradio] JT65A anyone in the bay area?

2007-04-12 Thread Leigh L Klotz, Jr.
I am in the area (CM87wk) and interested. Maybe we can get a demo going next AmTech day at SLAC? Leigh/WA5ZNU

Re: [digitalradio] The Bozo's Guide to HF JT65A has been updated.

2007-04-12 Thread Leigh L Klotz, Jr.
You could use class="add" class="del" or class="chg" on the HTML tags that have changed content, and publish two versions of the document, differing only in the link that refers to the stylesheet. You can also do it in one HTML file and provide an alternate CSS stylesheet with a named link tag

Re: [digitalradio] DM780 via remote access

2007-04-07 Thread Leigh L Klotz, Jr.
Yes, I used RPSK quite a bit a while back. See http://wa5znu.org/rpsk for source for the client. I stopped using it for TX because I didn't have a hardware 3min timer. I still think it is the right approach to send and receive data over TCP, not the audio. Someday soon I intend to put the serv

Re: [digitalradio] Re: Reed Solomon Identifier

2007-04-06 Thread Leigh L Klotz, Jr.
Vojtech, Thank you for figuring this out. I had thought that the mode ID was sent in the mode, and that all modes were decoded in parallel to see which one resulted in the ECC-protected key codeword. The advantage of senfing the mode ID using the mode itseld is that propagation characteristic

Re: [digitalradio] Re: Digital Master 780

2007-04-03 Thread Leigh L Klotz, Jr.
Simon, If you can work with an easy text-based protocol (I.e., not DCOM or Java RMI) then I will endeavor to write a server side for it on Linux. Leigh/WA5ZNU

Re: [digitalradio] Bulid your own modes?

2007-04-03 Thread Leigh L Klotz, Jr.
Simon, You might also want to look at pocketdigi, where Vojtech which has taken the gmfsk modems and ported them to WinCE/PocketPC. He also has an x86 Windows compiled version. I am sure Dave has advanced the gmfsk modems (many of which themselves came from other places) but it may be possible

Re: [digitalradio] DV (Digital Voice) using PSK at 93 bps

2007-04-01 Thread Leigh L Klotz, Jr.
In a similar vein, in 1982, I made a speech recognition program for the TI 99/4 home computer using a non-linear predictive algorithm to extract parameters from the cassette tape port. Buoyed by earlier success with a 1-bit oversampling algorithm for recording and playback of speech, I tried pa

Re: [digitalradio] Re: Report of the ARRL Ad Hoc HF Digital Committee Dissenting

2007-03-24 Thread Leigh L Klotz, Jr.
Well, then it's true. They don't care about the law. Leigh/WA5ZNU On Sat, 24 Mar 2007 5:49 pm, kv9u wrote: > The discussion of automatic signal detection and not transmitting on a > busy frequency has been a major item of discussion in the past day on > one of the Winlink 2000 groups and the impre

Re: [digitalradio] Re: Report of the ARRL Ad Hoc HF Digital Committee Dissenting

2007-03-24 Thread Leigh L Klotz, Jr.
I join the voices of the many who call for the release of source code for this busy detection and any patents under royalty-free license. If SCAMP's busy detector, for example, were to be released now, it would show goodwill, and would also spur innovation. Closed and unreleased, it fuels con

Re: [digitalradio] Re: CQ CH?

2007-03-21 Thread Leigh L Klotz, Jr.
99%? That works out to 150 hams per state. Perhaps that number is an exaggeration, because when I listen on the contest weekends, it sure sounds like a lot more than that. 73, Leigh/WA5ZNU On Wed, 21 Mar 2007 11:27 am, bruce mallon wrote: > Rick ... > > 99% of us took the code and don't use it.

Re: [digitalradio] Re: RFSM2400/MIL-STD-188-110

2007-03-18 Thread Leigh L Klotz, Jr.
consider facsimile as > "image"? Thus, any areas that image can be transmitted are also legal > for facsimile (FAX). > > 73, > > Rick, KV9U > > > > Leigh L Klotz, Jr. wrote: >> I think that makes it fax, which isn't legal in the phone band. >&

Re: [digitalradio] Re: RFSM2400/MIL-STD-188-110

2007-03-17 Thread Leigh L Klotz, Jr.
I think that makes it fax, which isn't legal in the phone band. It's screwy, isn't it? Hellschreiber and Feld-Hell, which is much like what you describe, is legal in the cw/data band but not the phone band. Leigh/WA5ZNU On Fri, 16 Mar 2007 3:49 pm, Howard Brown wrote: > So we are legal if we g

Re: [digitalradio] Re: 3580kHz-3600kHz Freq Coordination Info

2007-03-09 Thread Leigh L Klotz, Jr.
http://www.gnu.org/licenses/gpl-faq.html#DoesTheGPLAllowModNDA So the FSF says no. As Dave points out, I don't know that this has been taken to court. However, in this case among, it would be unlikely to go to court. I was serious in suggesting that perhaps Bruce Perens (who is a ham and a Linu

Re: [digitalradio] Re: 3580kHz-3600kHz Freq Coordination Info

2007-03-09 Thread Leigh L Klotz, Jr.
sed? >> >> In other words, once you release an alpha or beta, do you have to >> provide source source to everyone else? Or does it have to be a >> finalized and released code? >> >> 73, >> >> Rick, KV9U >> >> >> Leigh L Klot

Re: [digitalradio] Re: 3580kHz-3600kHz Freq Coordination Info

2007-03-09 Thread Leigh L Klotz, Jr.
Now that NCI is no longer necessary, maybe we can get Bruce Perens interested in this topic and he can pursue the release of SCAMP source code through their obligations of GPL. Leigh/WA5ZNU On Fri, 9 Mar 2007 1:48 am, Rein Couperus wrote: > >> The SCAMP busy detector has been around for several

Re: [digitalradio] narrow filters/PSK

2007-03-08 Thread Leigh L Klotz, Jr.
What I was saying your second paragraph. A string signal darkens the waterfall and suppresses weak signals. IF filtering eliminates this. If the signal is a few KHz away and [uficiently strong that IF filtering doesn't then that is the close-in performance of your rig, but that is a differen

Re: [digitalradio] narrow filters/PSK

2007-03-07 Thread Leigh L Klotz, Jr.
Other strong signals in the passband of the IF will densense the following stages and cause AGC action. If you have no AGC, then you will overdrive the sound card audio stage with the strong signal in an attempt to copy the wreak one. The DSP filter in ICOM rigs is at the IF level and is accomp

Re: [digitalradio] Re: Olivia Frequencies, Olivia Frequency List

2007-03-06 Thread Leigh L Klotz, Jr.
Last night I heard ZS6BUN on 40m above a little above 7070. Dick's signal got progressively weaker but still copyable. I couldn't see it in the noise, ans when I accidently jostled the rig, I couldn't find it again, so I couldn't try calling when the other QSO ended. 73, Leigh/WA5ZNU

Re: [digitalradio] Olivia dying?

2007-02-24 Thread Leigh L Klotz, Jr.
gt; 73 > > Patrick > >> - Original Message ----- >> >> From: Leigh L Klotz, Jr. >> >> To: digitalradio@yahoogroups.com >> >> Sent: Saturday, February 24, 2007 11:32 PM >> >> Subject: Re: [digitalradio] Olivia dying? >> >> Is

Re: [digitalradio] Olivia dying?

2007-02-24 Thread Leigh L Klotz, Jr.
Is there any reason we couldn't have images with Olivia? As far as I can tell, MFSK images are just plain old SSTV images with a header specifying size sent in MFSK data. The offset needs to be set for the different Olivia widths, but that is about it. Am I confused? Leigh/WA5ZNU On Sat, 24 F

Re: [digitalradio] Prop Beacons

2007-02-24 Thread Leigh L Klotz, Jr.
I would argue that following the IARU band plan is following "good amateur practice" which is cited in part 97. See the recent announcement from QRP-ARCI to realign the US 40m QRP calling frequency as an example. 73, Leigh/WA5ZNU On Sat, 24 Feb 2007 11:28 am, Andrew O'Brien wrote: > None, there

Re: [digitalradio] Re: 14100.5 kHz USB - ALE Channel Bandwidth, IARU Beacon Guardband

2007-02-23 Thread Leigh L Klotz, Jr.
During the last RTTY contest I was happened to be trying to listen to the 20m Beacons and there was a local OM running stations with his space tone on top of the CW from the beacon. He was there for a while so I called him right before W6WX beaconed, suggested nicely he qsy, then W6WX ID'd. H

Re: [digitalradio] Re: Why still the W1AW CW non-listening stuff on 3.580?

2007-02-19 Thread Leigh L Klotz, Jr.
Kids do seem to like CW. I have taught two 3rd grade classes as part of a unit on the physics of sound and am about to do a third. Every kid was interested, therewere a few kids in each class who were hyper-interested. Leigh/WA5ZNU On Mon, 19 Feb 2007 1:11 pm, Les Warriner wrote: > The United

Re: [digitalradio] Re: Morphing Dave, Simon, and Patrick.

2007-02-18 Thread Leigh L Klotz, Jr.
ourselves to one transport mechanism (again), > perhaps we should only define message semantics. Being able to choose > in-memory, network, or even serial port transports would provide > useful flexibility. > >73, > >Dave, AA6YQ > > --- In digitalradio@yahoogroups

Re: [digitalradio] Re: Morphing Dave, Simon, and Patrick.

2007-02-17 Thread Leigh L Klotz, Jr.
TCP is good enough. Windows and Linux make it efficient on the box, and you always have the option to use "named pipes" or "AF_UNIX" sockets to make it even shorter. X windows works this way and it is plenty fast enough. Unless you're doing a full SDR data stream though there's no need for t

Re: [digitalradio] Re: Morphing Dave, Simon, and Patrick.

2007-02-17 Thread Leigh L Klotz, Jr.
L? > >73, > > Dave, AA6YQ > > --- In digitalradio@yahoogroups.com, "Leigh L Klotz, Jr." <[EMAIL PROTECTED]> > wrote: >> >> I created XDIF.org for this purpose. >> >> As a demo of separating the backend from the UI, I created

Re: [digitalradio] Morphing Dave, Simon, and Patrick.

2007-02-17 Thread Leigh L Klotz, Jr.
I created XDIF.org for this purpose. As a demo of separating the backend from the UI, I created RPSK, which is a protocol for digimode operations. I wrote two UI clients for it, one a standalone Java app or applet, and the other for a cell phone. When used on the same machine, the protocol de

Re: [digitalradio] Remotely controlled radio with full connectivity.

2007-02-16 Thread Leigh L Klotz, Jr.
9DRV > > - Original Message - > From: "Leigh L Klotz, Jr." <[EMAIL PROTECTED]> > > > Try Skype for the audio channel... > > > > > Announce your digital presence via our DX Cluster > telnet://cluster.dynalias.org > > O

Re: [digitalradio] Remotely controlled radio with full connectivity.

2007-02-15 Thread Leigh L Klotz, Jr.
Try Skype for the audio channel... Leigh/WA5ZNU On Thu, 15 Feb 2007 4:28 pm, James Wilson wrote: > Is there a way to pass audio through one sound card to another sound > card? 

Re: [digitalradio] Can I get a rig with MORE?

2007-02-12 Thread Leigh L Klotz, Jr.
As they used to say about Leica, get a K2 for backup so when one of your rigs breaks you can use the K2... Leigh/WA5ZNU

Re: [digitalradio] Linux software

2007-02-06 Thread Leigh L Klotz, Jr.
I think gmfsk does mt63 so it shouldn't be hard for fldigi to do it. Does anybody but MARS use it? Leigh/WA5ZNU

Re: [digitalradio] Re: SDR-1000

2007-02-04 Thread Leigh L Klotz, Jr.
ion needed recompiled for the various releases. > > But then again, who would provide the repository? > > I would hope that someday the ARRL would do this...but perhaps that's > too much > of a dream. > > Walt/K5YFW > > Leigh L Klotz, Jr. wrote: >> This is ju

Re: [digitalradio] Re: SDR-1000

2007-02-04 Thread Leigh L Klotz, Jr.
This is just what package managers do. There are two main package managers: Debainls deb format and Red Hat's RPM. Debian historically did a better job on resolving dependencies at installation time (as opppsed to just reporting them), but part of that ability was due to Debian have a good repo

Re: [digitalradio] Re: An observation on Olivia

2007-02-03 Thread Leigh L Klotz, Jr.
Skip, Is this done with all-mode rigs are is it audio over FM? Leigh/WA5ZNU On Sat, 3 Feb 2007 12:38 pm, Skip wrote: > Here in South Carolina, we are running a PSK63 net on 2-meters,

[digitalradio] Eliminating musical sound card problems

2007-02-03 Thread Leigh L Klotz, Jr.
A 2nd sound device such as a Creative, Griffin iMic, or perhaps the new TigerTronics all-in-one device, will go a long way towards eliminating this phenomenon, as Windows, if I am not mistaken, generates its noise on the primary card. I do this on Linux in my shack. 73, Leigh/WA5ZNU On Sat, 3

Re: [digitalradio] Vista emphasizes security over compatibility

2007-01-31 Thread Leigh L Klotz, Jr.
Interesting. Run PSK on AM and you get two sidebands for diversity reception and a pilot carrier. This could make building small PSK rigs easier... Leigh/WA5ZNU On Wed, 31 Jan 2007 7:38 am, DuBose Walt Civ AETC CONS/LGCA wrote: > > http://www.fcw.com/article97508-01-30-07-Web&printLayout > > I

Re: [digitalradio] Re: FNpsk

2007-01-30 Thread Leigh L Klotz, Jr.
If you use a dedicated computer for your gateway, which is somewhat likely if you use a dedicated radio, then you can just stick the CD in and go... 73, Leigh/WA5ZNU On Tue, 30 Jan 2007 12:04 pm, Chuck Mayfield wrote: > At 01:25 PM 1/30/2007, Rein Couperus wrote: >> M$ gives you windows, Linux gi

Re: [digitalradio] Re: FNpsk

2007-01-30 Thread Leigh L Klotz, Jr.
Vojtect OK1AK's PocketDigi may be the answer here, in the x86 version. Especially if the cntrol gets done over TCP. Leigh/WA5ZNU On Tue, 30 Jan 2007 10:17 am, Chuck Mayfield wrote: > At 03:27 AM 1/30/2007, Rein Couperus wrote: >> Everybody with an HF trx and a laptop that has a CD drive and a >>

Re: [digitalradio] Re: FNpsk

2007-01-30 Thread Leigh L Klotz, Jr.
Hey, I proposed this last month for contests and PSK ragchews using QRZ.com as the database... Leigh/WA5ZNU On Tue, 30 Jan 2007 7:32 am, kd4e wrote: >> If we did not have to send all the formatting of a message type, and >> only sent a special identifier of the format, the text data would be a >

  1   2   3   >