Re: [digitalradio] Amp for sale on Ebay
I wonder if it covers the 30-meter band? 73 de Bob - KØRC in MN - Original Message - From: John Becker, WØJAB To: digitalradio@yahoogroups.com Sent: Friday, April 11, 2008 12:57 PM Subject: [digitalradio] Amp for sale on Ebay Item # 170209454193 97b7cdc.JPG
Re: [digitalradio] Re: RTTY Standard
I know the AEA PK-232 used 200 Hz, as well as the Heathkit HK-232, but the Kantronics KAM series all used 170 Hz shift. That was the reason I switched from the AEA to the KAM products. What Kantronics models used 200 Hz shift? 73 de Bob - KØRC in MN - Original Message - From: Jose A. Amador To: digitalradio@yahoogroups.com Sent: Tuesday, February 12, 2008 8:35 AM Subject: Re: [digitalradio] Re: RTTY Standard Kantronics and AEA too. I have a Communications Quarterly issue from the mid 90's somewhere here in which the author modifies its filters for 170 Hz and describes a great improvement for AMTOR...but also becomes almost useless for 300 baud packet. AM7910 modems have 200 Hz shift. Jose, CO2JA --- Brad wrote: --- In digitalradio@yahoogroups.com, Robert Chudek - K0RC [EMAIL PROTECTED] wrote: For amateur radio stations, 45.45 bauds and 170 Hz shift. Don't be surprised to find some 200Hz shift there too. Kantronics or someone used it as their standard, but generally, 170Hz machines had no problem decoding it. Brad VK2QQ __ Participe en Universidad 2008. 11 al 15 de febrero del 2008. Palacio de las Convenciones, Ciudad de la Habana, Cuba http://www.universidad2008.cu
Re: [digitalradio] RTTY Standard
For amateur radio stations, 45.45 bauds and 170 Hz shift. 73 de Bob - KØRC in MN - Original Message - From: Walt DuBose To: digitalradio Sent: Monday, February 11, 2008 3:56 PM Subject: [digitalradio] RTTY Standard What are the current RTTY standards for baud and shift? Tnx 73, Walk/K5YFW
Re: [digitalradio] Re: Operating FSK RTTY in a contest ?
Andy, Regarding matching the RTTY tones... matching a tone is difficult for some people and easy for others. For example, some people sing off key! Were you good at matching the note of the pitch pipe in music class? :-) You said some RTTY signals did not sound the same as yours. I heard this as well, and one was so blatant I had to look at my scope! The reason for this dissimilar sound is because some fellows overdrive their transmitter audio input when using AFSK. This generates distortion, harmonics and secondary signals. I hear this during every RTTY contest and last weekend was no exception. A bad soundcard or driver could be a potential problem as well, but not as likely as excessive mic gain. If a RTTY signal is generated by AFSK and the audio is not pure, it will sound different from good 2125 and 2295 tones. It's the same principle that a middle C note on a violin sounds different than the same note on a clarinet. Both instruments produce the same fundamental frequency, but each has its unique signature of harmonics and overtones that allow you to easily distinguish between them. So now you know why a lot of RTTY operators say this mode is music to their ears! But why are they called green keys? A piano is black and white. 73 de Bob - KØRC in MN - Original Message - From: Andrew O'Brien To: digitalradio@yahoogroups.com Sent: Monday, February 11, 2008 7:26 PM Subject: [digitalradio] Re: Operating FSK RTTY in a contest ? -Bob, thanks for your helpful advice. I am interested in your comments about matching the RTTY tones, his and mine. A few times over the weekend I did note that my tones did not sound as musical as the tones I was decoding. Looks like I need more practice with RTTY FSK. Andy. -- In digitalradio@yahoogroups.com, Robert Chudek - K0RC [EMAIL PROTECTED] wrote: Andy, When using FSK and the MMTTY/N1MM software, the NET button has no effect. That button is used only when your setup is configured for AFSK mode. Regarding the AFC button, you may or may not want to have that turned on. It depends on how you are operating. When you are searching for stations to work, you would have the AFC turned OFF. You can think of this as locking the MMTTY decoder tones to 2125 and 2295 Hz. You have the right idea in your message. If you are sitting on a frequency, calling CQ, and having stations come back to you, then you may want the AFC turned ON. What this does is to release the MMTTY decoder so it can Automatically Frequency Correct (AFC) its internal filters to capture a station that may be calling you that is off frequency. You can see how this works by starting with AFC turned off. Tune to a DX station that is calling CQ. Get your waterfall, bandscope, and XY display lined up. Note the Mark window will say 2125. Now turn the AFC on. Watch this window as stations come on frequency and call the DX. Some stations may be exactly on frequency, while others will be off. For the stations that are off frequency, you will see MMTTY automatically adjust that Mark window number, up or down, depending whether the caller is low or high from zero beat with the DX. This number jumps around a bit, but you can get a close approximation how far off of zero beat a caller is by subtracting 2125 from the number that appears in this window. If it reads 2025 you know they are 100 Hz from zero beat. To ensure you are on frequency for a caller, the first thing is to make sure you are using the monitor to listen to your own TX signal. If you're musically inclined, you can simply match the pitch of the station you are calling to the pitch of your monitor. Beyond that, the MMTTY audio bandscope is probably the most accurate tool. You can also enable the FIR demodulator. Click the Type button and look above the Mark window. There are 3 demodulators that you cycle through by clicking the button. The FIR demodulator gives you a very sharp + symbol on the XY scope. And of course double check your TS-2000 menu settings to make sure your FSK is set for 170 Hz and the standard tone pairs of 2125 and 2295 Hz. I don't have a TS-2000 manual, but Kenwood is pretty good about documenting the RTTY stuff so this information should be in there somewhere. In two weeks there will be the NCJ RTTY NA QSO Party, a 10-hour event that is a lot of fun. Check it out here: http://www.ncjweb.com/naqprules.php 73 de Bob - KØRC in MN - Original Message - From: Andrew O'Brien To: DIGITALRADIO Sent: Sunday, February 10, 2008 6:39 PM Subject: [digitalradio] Operating FSK RTTY in a contest ? By the way, my TS2000 is one year old today, one year at my shack. With the TS-2000 being my first rig that could do FSK RTTY, I have not got around to much RTTY contesting in the past year. I dabbled a little today
Re: [digitalradio] Re: Operating FSK RTTY in a contest ?
I started my RTTY career using 2125 and 2975 tones... until those young brats started pushing the envelope (or should I say, squeezing the envelope) with those 170 Hz tones... things were much simpler in those good ole days... your betcha... the smell of a well oiled machine, a whiff of ozone from the commutator, polar relays! (hey remember them?), and the quiet roar of all that machinery pounding out your CQ's... It was great... well, except for two things... having your platen pounded to death at the right margin, and coming home to find a half roll of paper behind the machine because some smart-a** thought it was cute to auto start your machine and feed it 15 minutes of line feeds. Yep, the good ole days... ! ! ! 73 de Bob - KØRC in MN - Original Message - From: John Becker, WØJAB To: digitalradio@yahoogroups.com Sent: Monday, February 11, 2008 7:59 PM Subject: Re: [digitalradio] Re: Operating FSK RTTY in a contest ? It once was very easy to copy RTTY when *everyone* used 2125 and 2295 Hz tones. Then came the 200 Hz shift TNC's and now you have sound cards and people that are up side down with their tones. And please don't get me started on no CR/LF after 70 or charters.
Re: [digitalradio] Operating FSK RTTY in a contest ?
Andy, When using FSK and the MMTTY/N1MM software, the NET button has no effect. That button is used only when your setup is configured for AFSK mode. Regarding the AFC button, you may or may not want to have that turned on. It depends on how you are operating. When you are searching for stations to work, you would have the AFC turned OFF. You can think of this as locking the MMTTY decoder tones to 2125 and 2295 Hz. You have the right idea in your message. If you are sitting on a frequency, calling CQ, and having stations come back to you, then you may want the AFC turned ON. What this does is to release the MMTTY decoder so it can Automatically Frequency Correct (AFC) its internal filters to capture a station that may be calling you that is off frequency. You can see how this works by starting with AFC turned off. Tune to a DX station that is calling CQ. Get your waterfall, bandscope, and XY display lined up. Note the Mark window will say 2125. Now turn the AFC on. Watch this window as stations come on frequency and call the DX. Some stations may be exactly on frequency, while others will be off. For the stations that are off frequency, you will see MMTTY automatically adjust that Mark window number, up or down, depending whether the caller is low or high from zero beat with the DX. This number jumps around a bit, but you can get a close approximation how far off of zero beat a caller is by subtracting 2125 from the number that appears in this window. If it reads 2025 you know they are 100 Hz from zero beat. To ensure you are on frequency for a caller, the first thing is to make sure you are using the monitor to listen to your own TX signal. If you're musically inclined, you can simply match the pitch of the station you are calling to the pitch of your monitor. Beyond that, the MMTTY audio bandscope is probably the most accurate tool. You can also enable the FIR demodulator. Click the Type button and look above the Mark window. There are 3 demodulators that you cycle through by clicking the button. The FIR demodulator gives you a very sharp + symbol on the XY scope. And of course double check your TS-2000 menu settings to make sure your FSK is set for 170 Hz and the standard tone pairs of 2125 and 2295 Hz. I don't have a TS-2000 manual, but Kenwood is pretty good about documenting the RTTY stuff so this information should be in there somewhere. In two weeks there will be the NCJ RTTY NA QSO Party, a 10-hour event that is a lot of fun. Check it out here: http://www.ncjweb.com/naqprules.php 73 de Bob - KØRC in MN - Original Message - From: Andrew O'Brien To: DIGITALRADIO Sent: Sunday, February 10, 2008 6:39 PM Subject: [digitalradio] Operating FSK RTTY in a contest ? By the way, my TS2000 is one year old today, one year at my shack. With the TS-2000 being my first rig that could do FSK RTTY, I have not got around to much RTTY contesting in the past year. I dabbled a little today in the CQ RTTY contest, my old RTTY contesting used to be exclusively AFSK sound card RTTY. I have mainly used Winwarbler for FSK with the TS-2000, but in the RTTY contest this weekend I used N1MM Logger and the MMTTY Engine. I had a few odd things happen, 4-5 times I could have sworn that the station I was working moved up the dial a few Hz. I was in hunt and pounce mode. I tuned the station, decoded him, transmitted, and they answered. A few times in the QSOs I noticed them 100-200 Hz from where they started . One station that this happened to came back to me and said I was off frequency. When operating FSK RTTY, is it standard to work with NET and AFC OFF? I had both off during the contest, since I assume that with FSK I need to transmit exactly where I tuned the station (I used the MMTTY spectrum display to tune the station precisely). I wonder if the stations that appeared to drift were stations with their AFC on, and something drew them up the band a little ? Maybe I am doing something wrong with MMTTY in N1MM? I had MMTTY set for the standard HAM profile. How does one ensure you are on frequency in FSK RTTY ? -- Andy K3UK www.obriensweb.com (QSL via N2RJ)
Re: [digitalradio] Re: SSB on 14070
That's an interesting frequency to select for the source of voice qrm. I wouldn't be so fast to blame VE's or other non-US stations for this increased interference. That is the BFO (14070 dial) frequency for virtually every transceiver running PSK on 20 meters. With the proliferation of PSK31 using soundcard technology, my first inclination would be some operators do not mute or disable their microphone when using AFSK for these modes. So now there's a live mic in the shack while they are happily PSKing away. Everything is fine until they shout... HEY MARTHA, WHAT'S FOR DINNER TODAY? Instant qrm. 50 years ago the operator knew when his microphone was live and on the air! :-) 73 de Bob - KØRC in MN - Original Message - From: Rick To: digitalradio@yahoogroups.com Sent: Thursday, February 07, 2008 8:21 AM Subject: Re: [digitalradio] Re: SSB on 14070 I have been hearing more activity that appears to be illegal voice than I have ever heard in the past 50 years. It is so bad that a number of times I have been hearing voice transmissions that interfere with WWV reception! Probably much of the voice activity on the ham bands that are in the U.S. text data portions of the bands are due to operators in other countries moving lower. I know that Canadians in particular were very upset with the liberalization of the U.S. voice frequencies some years ago and declared that they would move down below the U.S. frequencies. In fact, I remember someone commenting that if the U.S. ever increased liberalization of the voice bands, they would just move down even further. Since the more recent increase in voice bandwidths for U.S. hams this may have caused at least some of this. Although on 40 meters you will often hear wide split operation because those outside of Region 2 may not have as wide a band, I recently heard a CU2 working narrow split down around the digital area. When the 10 meter band is open we can have many pirates operating in the text data areas of the band since that likely seems like an unused part of the spectrum to those stations. 73, Rick, KV9U Brad wrote: --- In digitalradio@yahoogroups.com, Leigh L Klotz, Jr. [EMAIL PROTECTED] wrote: I have ben hearing what sounds like Vietnamese on 14.070 LSB. I suspect bootleg operation. We hear a lot of that throughout 40, 30 and 20m and everywhere in between. All Asian pirates, fishing vessels, phone patches, all sorts of things. It can really ruin 10132 for a start. Brad VK2QQ
[digitalradio] Fw: [MWA] ARLX002 Lunar Echo Experiment looking for Amateur RadioParticipants
- Original Message - From: Robert Chudek - K0RC [EMAIL PROTECTED] To: Minnesota Wireless Association [EMAIL PROTECTED]; TCDXA [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Friday, January 18, 2008 11:32 PM Subject: Re: [MWA] ARLX002 Lunar Echo Experiment looking for Amateur RadioParticipants I am copying the TX signal (6792.5 KHz) about S-9 on peaks and at times receiving the echo from the moon perfect Q5. The best antenna is my 40m single element Telrex at 65 feet. It's a crisp, clear night (about -12 F right now) and the moon is shining bright almost overhead. I'm recording the audio using Audacity. Of course I also heard a couple of lids tuning up on this frequency and covering up the signals at the beginning. 73 de Bob - KØRC in MN - Original Message - From: Robert Chudek - K0RC [EMAIL PROTECTED] To: TCDXA [EMAIL PROTECTED]; Minnesota Wireless Association [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Friday, January 18, 2008 10:49 AM Subject: [MWA] ARLX002 Lunar Echo Experiment looking for Amateur RadioParticipants Here's an opportunity for some unusual DXing on (near) the 40m band this weekend. 73 de Bob - KØRC in MN - - - - - - - - - - - - - - - - - - - - - - - - - - SB SPCL @ ARL $ARLX002 ARLX002 Lunar Echo Experiment looking for Amateur Radio Participants ZCZC AX02 QST de W1AW Special Bulletin 2 ARLX002 From ARRL Headquarters Newington CT January 17, 2008 To all radio amateurs
[digitalradio] Fw: HAARP echo report
- Original Message - From: Robert Chudek - K0RC To: [EMAIL PROTECTED] Sent: Friday, January 18, 2008 11:51 PM Subject: HAARP echo report Hello researchers, I am located in East Central Minnesota (45.4123 N 92.8823 W) and am receiving the 6792.5 TX signal up to S-9 level. I have heard the moon echo several times for brief periods (10 ~ 15 seconds) with perfect Q5 copy. Many other times it is distinguishable but not very strong. My receiver is a Kenwood TS-950SDX transceiver and I have a variety of antennas. The best antenna is the single element 40m Telrex dipole at 65 feet above ground. This is a full sized aluminum element approximately 76 feet long and is 2.5 diameter in the middle, tapering to 0.5 rods at the ends. It resonates at 7040 KHz. I am recording this session using Audacity and can upload this file to my website for your download if desired. I'm not certain what size it will be, probably 50-Mb in MP3 format. I started recording at a wide bandwidth (5 KHz) but went down to 250 Hz for the best reception. I have a lot of local noise (S9 +20 dB at wide bandwidth). At 05:35 I also heard what sounded like Over The Horizon Radar scanning your TX frequency. This was 3 or 4 bursts of 20 seconds or so. In Minnesota the conditions are clear, the moon is bright, it is high in the sky (overhead), and the temp is -12 F. It is 05:44 now while I type this message and I am monitoring the experiment. For the past 30 seconds I could not tell the difference between the TX and the echo. Audio-wise, they are the same strength out of my speaker. I couldn't not see the signal meter from this side of the room. 73 de Bob - KØRC in MN
[digitalradio] Primary communcation systems
I am not a sailor nor do I have any experience at sea. So as a layman, it is unfathomable to me that anyone would risk their life venturing out of port and rely on amateur radio for their communication needs. Amateur radio for recreational use, certainly... a backup communication system, certainly... but IMO, it would be foolhardy to not have a primary safety system that reports location and status. The whole idea strikes me as penny wise, pound foolish. The USCG requires safety equipment. Isn't a primary communication system on that list? 73 de Bob - KØRC in MN - Original Message - From: Michael Hatzakis Jr MD To: digitalradio@yahoogroups.com Sent: Wednesday, December 26, 2007 1:02 PM Subject: RE: [Bulk] Re: [digitalradio] Questions on digital opposition Why to I want to try to send email via a slow speed serial stream when I have 100 meg Internet on the computer next to the rig? Ask a marine mobile station who may be far out at sea and when the band conditions stink, this is the kind of emergency where PACTOR 3 may be on the short-list of available modes of communication. This is not a theoretical scenario either. Happens all the time. A daily PMBO contact sends GPS info and allows others to track their whereabouts. Michael -- From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of W2XJ Sent: Wednesday, December 26, 2007 10:53 AM To: digitalradio@yahoogroups.com Subject: [Bulk] Re: [digitalradio] Questions on digital opposition I think the whole thing is pointless. Why to I want to try to send email via a slow speed serial stream when I have 100 meg Internet on the computer next to the rig? I firmly believe that these systems are too organized to be dependable in an emergency. That is when you loose a lot of infrastructure. Simple systems, temporary installations all with some form of emergency power is what is required in an emergency. Modes should be those that can be supported station to station. Basically if it is not part of the rig, it is too complicated for an emergency. Now that CW is not an FCC requirement that is no reason to abandon it as a primary emergency mode. It is still the mode that permits one to accomplish the most with the least. Rud Merriam wrote: This is meant as a couple of constructive, clarifying, questions for those who express strong displeasure with Pactor. Would you decrease your opposition if Pactor III did not expand its bandwidth? Could you accept wide band digital modes if they all operated in a fixed bandwidth, i.e. not expanding or contracting due to band conditions? Rud Merriam K5RUD ARES AEC Montgomery County, TX http://TheHamNetwork.net
[digitalradio] Re: PSK63 activity!
--- In digitalradio@yahoogroups.com, [EMAIL PROTECTED] wrote: -Original Message- From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of John Becker, WØJAB Sent: Sunday, November 18, 2007 9:11 PM To: digitalradio@yahoogroups.com Subject: Re: [digitalradio] PSK63 activity! At 08:00 PM 11/18/2007, you wrote: It is not like adding CW to a phone contest because both RTTY and PSK63 are keyboard modes. Phone and CW are not. Well just add the rest of the keyboard modes while your at it... And please make sure you do add both the keyboard mode of Amtor and Pactor. I still fail to see why psk should be added to a RTTY contest. Possibly for the same reason that they started allowing horseless carriages on the same streets as horses. - Yes, of course the older technology was displaced by the horseless carriage. However, when it comes to contesting, the horse tracks continue to support a sizeable following and they don't mix the two technologies during the races.
Re: [digitalradio] Re: A challenge to RTTY operators!
Brian, You're welcome. Yeah, back then the PC and soundcard technology was in its infancy compared to the technology we use today. I was aware of the RTTY-RITTY capability because Brian had sent me code to test before he released RITTY for sale. Ray and Brian were working together to make sure the softwares would play nicely with each other. And you're spot on about the piracy issue which drove Brian out of the amateur radio software business. That was a huge loss for the ham radio industry in my opinion. There were some big talkers that were going to step up to the plate and continue the development of the RTTY by WF1B product after Ray released it into the public domain. As we all know now, a new developer never developed. It takes a very special person (or team) to create and support a software product with ham radio as the target audience. My hat's off to those who have brought many low cost or freeware products into our hobby over the years. 73 de Bob - KØRC in MN - Original Message - From: Brian A To: digitalradio@yahoogroups.com Sent: Saturday, November 17, 2007 6:24 AM Subject: [digitalradio] Re: A challenge to RTTY operators! Robert, Thanks for pointing this out. The link is for 1999. Regarding WF1F/RITTY. The 1998 manual I have for WF1B (a DOS program) shows support for RITTY as a DOS TSR. Earlier manuals don't show it. I recall trying to get a sound card going in DOS. It was a real bear-- at least for the Soundblaster card I had. TSR's were flaky too. WF1B later became unusable as CPU speeds approached 1GHZ. It simply quit. Timing loop indicies became too large integers for their type in the code. Attempts to use CPU slow down programs to contiue to use WF1B were not too successful. The author had quit supporting WF1B at that time. The PASCAL source was available but nobody picked it up to fix this. RIP WF1B. All this history sort of indicates the 1999 to be the start of useful software/sound card RTTY for contesting or other use. 73 de Brian/K3KO --- In digitalradio@yahoogroups.com, Robert Chudek [EMAIL PROTECTED] wrote: Brian, A minor correction to the statement WF1B supported quite a few TU types but no sound cards. RTTY by WF1B supported the RITTY program by Brian, K6STI. http://www.eham.net/reviews/detail/235 73 de Bob - KØRC in MN - Original Message - From: Brian A To: digitalradio@yahoogroups.com Sent: Friday, November 16, 2007 2:45 PM Subject: [digitalradio] Re: A challenge to RTTY operators! Rick, I used a CP-1 TU up to the day the WF1B RTTY contest program became unsupported. WF1B supported quite a few TU types but no sound cards. That was around 1996 or 7. Here's a tidbit of info. Score required to win 1997 USA CQ WW RTTY single op assisted in 1997 = 553k points. I still have the plaque for it. It was done with a CP-1 and WF1B software. This was TU, not sound card era for RTTY. I don't believe MTTY and was created until several years later. MTTY by itself was pretty much useless as a contesting program. It couldn't even export its logs. It only supported a few rigs. It wasn't until codes like Writelog and N1MMLOGGER integrated MTTY and such engines in contesting programs that contesting became practical. K6STI RTTY was in there too about the same time with perhaps the best decoder available and a contesting interface. Piracy issues essentially killed the K6STI program. The author stopped supporting it. The last few years about 1.5 million points is required to win the same award. I ammend my statement. It wasn't just sound card RTTY but sound card RTTY plus having it integrated into contesting programs that released the contesting flood of RTTY stations. P.S. despite the sound card revolution, I stick with my HAL DXP38 DSP TU. Sound card apps seem to have a nasty habit of refusing to work for unknown reasons. One day they work, the next they don't. One has to be a computer Geek to bring them back to life. This isn't just my experience. 73 de Brian/K3KO --- In digitalradio@yahoogroups.com, Rick mrfarm@ wrote: I have to concur with Jose on this. I was a very active HF and VHF digital ham starting around 1981 with a homebrew XR2206/XR2211 TU that was from QST magazine and called The State of the Art TU. It most assuredly was not, but being naive and new to RTTY found it to be a very poor performer. It was actually only detecting one of the tones with the tone decoder! This was before computers became popular and I was interfacing with a Model 15 TTY and a homebrew loop circuit. I was able to borrow an huge tube ST-6 design TU and that was much better. Then computers started to be available at more affordable prices and I moved
Re: [digitalradio] What DXCC mode is AMTOR?
That would be an error. AMTOR is a digital mode and is equivalent to RTTY. http://www.arrl.org/tis/info/digital.html 73 de Bob - KØRC in MN - Original Message - From: Dave To: digitalradio@yahoogroups.com Sent: Thursday, October 25, 2007 6:21 PM Subject: [digitalradio] What DXCC mode is AMTOR? Got my DXCC the other day and was surprised to see an AMTOR QSO registered as CW. Is this normal or a simple error? Tnx es 73 Dave KB3MOW
Re: [digitalradio] Newbie question...
I meant to type: This technique will lead to a dis-qualification because... 73 de Bob - KØRC in MN - Original Message - From: Robert Chudek To: digitalradio@yahoogroups.com Sent: Thursday, October 18, 2007 8:58 PM Subject: Re: [digitalradio] Newbie question... Technically this will work. It would be poor operating practice because you will transmit two simultaneous PSK signals and occupy twice the bandwidth necessary for a QSO. In a digital contest this technique will lead to a qualification because you are only allowed one TX signal on the band at a time. 73 de Bob - KØRC in MN - Original Message - From: Anil Raj To: digitalradio@yahoogroups.com Sent: Thursday, October 18, 2007 7:10 AM Subject: [digitalradio] Newbie question... Can anyone advise whether I can use a DSB transmitter for transmiting PSK31? 73s de SM0D
Re: [digitalradio] Newbie question...
Technically this will work. It would be poor operating practice because you will transmit two simultaneous PSK signals and occupy twice the bandwidth necessary for a QSO. In a digital contest this technique will lead to a qualification because you are only allowed one TX signal on the band at a time. 73 de Bob - KØRC in MN - Original Message - From: Anil Raj To: digitalradio@yahoogroups.com Sent: Thursday, October 18, 2007 7:10 AM Subject: [digitalradio] Newbie question... Can anyone advise whether I can use a DSB transmitter for transmiting PSK31? 73s de SM0D
Re: [digitalradio] Very confused
I just heard a QSO on 28.300 on LSB between two PA stations. It must be new operators not having developed their skills yet. 73 de Bob - KØRC in MN - Original Message - From: Dave 'Doc' Corio To: digitalradio@yahoogroups.com Sent: Saturday, June 30, 2007 7:33 PM Subject: Re: [digitalradio] Very confused Hi, Andy. yep, positive. That's the first thing I checked. If that were the case, I'd have a devil of a time making a contact, and that isn't the case. I've made many in the same time period, so that doesn't seem to be the problem. Just strange for it to happen this many times. Congrats on the nice mention in QST by the way! Andrew O'Brien wrote: Odd, are you sure you are transmitting on your receive frequency? If so, then maybe it is just new PSKers on 10M band. On 6/30/07, *Dave* [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: I have apparently missed the memo that covered the way calls are made and answered on PSK31. I just answered a CQ sent by one station, only to have a completely different station call me back and start a QSO as if I had answered him! This is at least the 4th or 5th time this has happened in the last week or so, and it seems to be only on 10m PSK. W1XYZ calls CQ, I call W1XYZ de KB3MOW, and K9ABC calls me back with his name, RST, and QTH. I could almost understand if it were a contest and all I answered was a QRZ?, but these are CQs I'm responding to. Where did I go wrong? Tnx es 73 Dave KB3MOW -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.476 / Virus Database: 269.9.14/882 - Release Date: 6/30/2007 3:10 PM
Re: [digitalradio] Very confused
Sorry... I should have spelled out Pennsylvania [PA]. In the US 28.300 is the low limit for 10m phone, so when using LSB, they're out of the band. Not that it will draw much attention on 10m right now, but I hope they don't try that on 20m! 73 de Bob - KØRC in MN - Original Message - From: Simon Brown To: digitalradio@yahoogroups.com Sent: Saturday, June 30, 2007 11:53 PM Subject: Re: [digitalradio] Very confused 10m LSB is legal in many if not all European countries. Simon Brown, HB9DRV - Original Message - From: Robert Chudek I just heard a QSO on 28.300 on LSB between two PA stations. It must be new operators not having developed their skills yet. 73 de Bob - KØRC in MN
Re: [digitalradio] VFO Dial Frequency, Audio Frequency, Centre Frequency
Hello John, Technology is changing this concept. I was recently re-educated on this topic after returning from a ham radio hiatus. Like you, I grew up on the principle you mentioned in your message, the transmit dial frequency is the Mark frequency. This statement is no longer true or false! The answer to what your dial is displaying is... it depends! In the old days, you would log and spot a RTTY station using the dial frequency. This was because FSK was generated by switching a small capacitance in and out of parallel with the main VFO capacitor. The Drake equipment (T4X, TR4, and RV4) had a solder tab sticking out the side of the VFO can for this connection. Your dial frequency WAS your Mark frequency and you shifted 850 Hz or 170 Hz lower when the external capacitance was switched into the circuit. Today, the modern transceiver dial frequency may indicate the suppressed carrier frequency, the Space frequency, the Mark frequency, or whatever you want (in some cases). There doesn't seem to be any consistency among the manufacturers, and in some cases within the same manufacturer. For a particular transceiver, you may be able to determine what the dial frequency is from reading the operations manual, but sometimes not! You can determine what a transceiver is doing by dialing in 28.100 MHz and transmit in RTTY. Using an external frequency counter or receiver, you can then find your FSK Mark carrier. It may be the same as the dial or not. It's a crap-shoot! Here are some examples why the newer technology has become a quagmire... My Kenwood TS-450 transceiver dial frequency IS the Mark frequency. This is described on Page 38 in the operations manual. The dial displays the Mark frequency, independent of the shift width or polarity. Likewise, the Ten Tec Orion II displays the Mark frequency when operating in FSK mode. But there are a variety of other systems... My Kenwood TS-950S (and TS-950SDX) transceiver dial frequency displays the SPACE frequency. This is described on Page 32 (Page 36) in the operations manual. It shows the Space frequency independent of the shift width or polarity. The dial frequency will be off by 170 Hz, hardly noticeable by most operators. I also have an Icom 756 Pro III. The operations manual is vague regarding the relationship between dial frequency and Mark frequency in this transceiver. I can't find a specific statement in the book, but from experience it appears the dial frequency is the suppressed carrier frequency. The Yaesu FT-920 throws yet another layer of configuration possibilities. This transceiver allows you to program the dial frequency to display Mark, Space, or the Center frequency! See Page 56 in the FT-920 manual which describes Menu Item U-45. Likewise, the FT-1000MP provides menu 6-3 which allows the user to set the transceiver displayed frequency to their choice. The default setting is to display the Mark frequency. See Page 54 of the operations manual. With the introduction of computer soundcards being used to generate RTTY tones, transceivers without FSK capabilities can now be used for digital communications. In this case, the dial frequency is the suppressed carrier frequency. The transceiver has no clue what tones are being broadcast through its audio chain! The contesting (N1MM) and logging (DXKeeper) software I use in my station have provisions to adjust to any method of FSK or AFSK frequency logging. Once you know what your specific transceiver dial is telling you, you can adjust these software so it logs and spots the exact Mark frequency. Welcome to the digital revolution! 73 de Bob - KØRC in MN - Original Message - From: John Becker To: digitalradio@yahoogroups.com Sent: Thursday, May 17, 2007 8:14 AM Subject: Re: [digitalradio] VFO Dial Frequency, Audio Frequency, Centre Frequency At 01:36 AM 5/17/2007, you wrote: It has been long usual to define the frequency of an RTTY signal as the RF frequency of the mark tone. And so on. Really ? In my 37 years I have always seen it given as dial frequency. Reason: RTTY has fixed tones - never changes. Therefore if you give the dial frequency there is no math to be done just tune and go. You will be right on.
Re: [digitalradio] DV (Digital Voice) using PSK at 93 bps
So Leigh, I now realize it was you that furthered your research at Rockwell Automation. Although this video is 10-years old, it fits the timeline you suggested below. http://emuse.ebaumsworld.com/video/watch/95 73 de Bob - KØRC in MN - Original Message - From: Leigh L Klotz, Jr. To: digitalradio@yahoogroups.com Sent: Sunday, April 01, 2007 10:17 AM Subject: Re: [digitalradio] DV (Digital Voice) using PSK at 93 bps 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 parameter extraction in a univector phase space, with a single-bit quantized value. I introduced a primitive operator into Logo to extract this parameter using a sample-and-hold algorithm. The algorithm sampled the cassette input port, and held until the extracted parameter reached a 1 state, and then returned. The next level of decoding logic used a genetically-developed Hidden Markov Model with a single-level probability chain. Upon return from the sample-and-hold, the Turtle would execute the next command in sequence, starting with Forward 100 followed by right 90, followed by clearscreen and then square. In training, I would speak the commands forward, right, clearscreen, and square. the experimental subject would then issue the next command, which would unfortunately fail due to the lack of node probabilities assigned to this state in the HMM. Through testing, I found that high probability could be assigned to clearscreen so I extended the HMM with a single node for clearscreen. On a hunch, I added square as the terminal node. I demonstrated the results to one of my professors, and every time I spoke, it would execute the command flawlessly. At the end, I said, clearscreen, and professor nodded sagely, but with tongue in cheek. Then he said, Now make it draw a square again. I said square, and the turtle performed flawlessly, and earning me the grudging respect of my betters. Never underestimate the power of a Hidden Markov Model, even one with no branches. Leigh/WA5ZNU
[digitalradio] What's the roar?
On 7147 KHz at about 14:00 UTC today there was a 10~12 KHz wide digital signal that was booming in. It's still there 2 hours later but only S-5 now. Can anyone tell me what this noise is about? It sounds almost at bad as the old Russian jamming signals from years gone by. 73 de Bob - KØRC in MN
Re: [digitalradio] FSK versus AFSK in BARTG ??????
Andy, There should be no detectable difference between an AFSK and FSK signal on the receiving end. Are you sure your tones were correct on FSK? The symptom you describe sounds like you may have been transmitting reversed tones. There is a menu setting to flip the polarity of the FSK keying in the Kenwood. Give this a try. I have heard several stations that were upside down during this contest. 73 de Bob - KØRC in MN - Original Message - From: Andrew O'Brien To: digitalradio@yahoogroups.com Cc: [EMAIL PROTECTED] Sent: Saturday, March 17, 2007 10:25 PM Subject: [digitalradio] FSK versus AFSK in BARTG ?? After several years of doing RTTY via AFSK, I thought I would use the BARTG RTTY contest this weekend to practice my FSK skills with the new radio. I was surprised that I was not being heard so well. I know the band is fairly poor but stations that I could hear fairly well would not respond to me, they often called CQ CQ after I called them. My antenna situation is not the best but I am used to being heard after a few tries. I did work some stations but much less than I am used to, I tried 40, 80 and 20M. Tonight, I tried again...just trying a few east coast stations, none were running pile-ups. Same result. many endlessly calling CQ and apparently not hearing my 100 watts of FSK. So, I switched to sound card AFSK and gave a call, first attempt the station came back to me. Another station then answered me on the second attempt. I switched back to FSK on the same band and antenna and very few responded. I'm new to FSK operations, is there something fundamental that I am missing? I am making sure I am transmitting on the same freq as I am receiving. I have made sure I have high tone selected properly. I set FSK for 100 watts with moderate amount of ALC showing. I set AFSK for 70 watts and NO ALC. It may still be just band conditions but I am wondering... -- Andy K3UK Skype Me : callto://andyobrien73 www.obriensweb.com
Re: [digitalradio] PSK and RTTY decode bult in to rigs
Andy, In my opinion, that feature is in a gray area, between useful and practical. I do believe this feature in the Icom has helped motivate many hams to give RTTY a try. Once they see the messages being exchanged, it becomes an incentive to investigate what is needed to participate. I suppose the same can be said about the standard soundcard feature found in new computers too. In the practical sense though, the basic Icom feature is flawed for two-way communications. Yes, you can store TX messages and send them, but there is no practical way to send the other station callsign and engage in a regular QSO using the radio by itself. A keyboard interface for the radio could address this. Maybe a future bell??? BTW, the Icom decoder is top-notch for RTTY. I am not aware that it will decode PSK modes. 73 de Bob - KØRC in MN - Original Message - From: Andrew O'Brien To: digitalradio@yahoogroups.com Sent: Saturday, January 27, 2007 8:57 AM Subject: [digitalradio] PSK and RTTY decode bult in to rigs I wonder about the performance of PSK31 and RTTY decoding that is built in to the firmware of rigs like the Icom 746 Pro. Does anyone use their rig in this way? How does the decoding perform, is it useful having in in a rig or is it just a bell and whistle that no-one really uses? -- Andy K3UK Skype Me : callto://andyobrien73 www.obriensweb.com
Re: [digitalradio] Interfacing a PK-232 to IC-746 (non-Pro)
Dave, Those connections are correct if your FSK signal transmits right side up. If you discover it transmits up side down, then use pin-4 on the PK-232 DIN plug instead of pin-1. I think the Icom radios work properly on pin-1 and the Kenwoods require pin-4. 73 de Bob - KØRC in MN MN stations will be looking for your participation in the Minnesota QSO Party being sponsored by the Minnesota Wireless Association ( http://www.w0aa.org/mnqp.htm ) on Saturday Feb 3, 2007 beginning at 1400 UTC. Join the fun! - Original Message - From: Dave To: digitalradio@yahoogroups.com Sent: Friday, January 19, 2007 5:08 PM Subject: [digitalradio] Interfacing a PK-232 to IC-746 (non-Pro) Can anyone confirm my plan to run FSK RTTY with the PK-232 and the 746 non-Pro using pin 1 from the 5-pin DIN plug on the back of the 232, to pin 1 of the ACC-1 jack on the back of the 746, and, of course, gnd to gnd? The 746 manual calls pin 1 of ACC 1 RTTY and states it Controls RTTY Keying. Since there are no other obvious choices, this seems correct, but want to get some verification before I wire it up. Tnx es 73 Dave KB3MOW
Re: [digitalradio] Odd PC Issue
Jose, Here's a full technical description about this executable and its tasks: http://support.microsoft.com/kb/314056 73 de Bob - KØRC in MN - Original Message - From: Jose A. Amador To: digitalradio@yahoogroups.com Sent: Thursday, January 11, 2007 1:30 PM Subject: Re: [digitalradio] Odd PC Issue DuBose Walt Civ AETC CONS/LGCA wrote: SVCHOST (svchost.exe) IS a dog and CAN eat up performance on such a short term/time basis that it will never show up in your task manager and perhaps not even as a spike on you CPU performance. The other possibility is that something is running in the background (a ham radio program that you don't have running on other computers) that has not totally closed down. Go to your task manager and control panel services and kill/stop all un-needed programs/services and see if the problem goes away. 73, Walt/K5YFW This is an old doubtwhat does SVCHOST do? What is it good for to have running on a Windows PC? I usually see SEVERAL instances simultaneously on the task manager. Jose, CO2JA
Re: [digitalradio] RTTY Contest on 17M
Huh? I don't hear anyone on 18.105 MHz. But 20 and 15 meters are loaded with signals! 73 de Bob - KØRC in MN - Original Message - From: Roger J. Buffington To: digitalradio@yahoogroups.com Sent: Sunday, January 07, 2007 9:51 AM Subject: [digitalradio] RTTY Contest on 17M There is heavy RTTY contesting on 17M; specifically around 18.105Mhz. I had understood, perhaps incorrectly, that contesting was excluded from the WARC bands. No? de Roger W6VZV -
Re: [digitalradio] Re: External hard drives?
Well in christ's name (your terminology), your solution doesn't solve Andy's problem of putting personal software on a company computer. You missed the part that the registry is going to get updated (if it is even accessible). Read on. Credible IT departments tie down the operating system very tight in order to reduce the probability of employees hauling worms, viruses, and other crap into the office and spreading it across the Enterprise. I know, I ran a corporate IT department for 8 years. From a pure IT perspective, laptops are the most dangerous PC's on the Enterprise. It's much easier to control and manage desktop machines. The solution I would propose is to purchase a new drive and caddy for the laptop. Typically there is one screw that holds the HDD into the laptop and that screw is accessible from the outside of the case. Depending on the drive size you want, this can be less than a $100 investment. Get your own drive, format it up, load your OS, and install your personal applications. Swap the drives when you want to run your radio applications at home. But be aware if you bring your laptop into work with your personal drive installed, you'll get hauled in front of the CIO to explain why you are putting the company infrastructure in jeopardy. And the incident will be written up in your permanent record. If this sounds blunt and excessive... well you don't understand the nightmares IT departments face, trying to support large networks that wrap around the world. I don't know for whom Andy works, but if it's a large corporation with an IT staff, he may find the screw holding the disk caddy into his new laptop has been superglued into place. My engineers didn't go to that extreme, but if there was a laptop suspected of issues, it got a fresh format and a standard build of corporate licensed software installed. 73 de Bob - KØRC in MN - Original Message - From: Salomao Fresco To: digitalradio@yahoogroups.com Sent: Friday, December 29, 2006 2:26 PM Subject: Re: [digitalradio] Re: External hard drives? Hi to all! I believe there is a big confusion! On the first post Andy states this: I just got a new company laptop. What the heck does he need to know about master, slave, falt cables and color of the power cables? He is talking about a laptop for Christ sake. He is asking you the time and you're telling him how the clocks work. He only wants to know if it is possible to load the Ham radio software that he needs to work digi modes on a External Hard Disk. I answer him YES, but there is no need to do it, why don't you try a Pen Drive, there are lots on the market now and the prices are low enough, I bought one with 1Gb for 19,99 euros a few months ago. How to use it? Instead of installing the software in the Computers own hard disk, install it on the flash drive (pen). This way you can use work your digimodes in about any computer. (it might not work with all programs, because some of them need to install some files in the Windows folder). Regards Happy new 2007 Sal On 12/29/06, Dave Doc Corio [EMAIL PROTECTED] wrote: Excuse me for jumping in here, but I'd like to add one thing. Please be sure the power supply in the PC is capable of carrying the extra load. Many computers being made contain only a bare minimum power supply - usually on the order of 200 or 250 watts. While this is adequate for what is in the PC at the time it is shipped, adding peripherals can overload the power supply. Adding an extra hard drive, CD/DVD burner, video card and audio card can tax a minimal power supply and cause many problems. Usually, just adding one of these is not a major concern, but consider upgrading the power supply if you're adding several. A 450 watt power supply is generally fairly cheap - on the order of $35 to $60, and can save headaches down the road! 73 Dave KB3MOW A computer, intelligent, friend of mine has been educating me of swapping hard drives... For example, drive C..is usually marked at 'master' and the others are marked as slaves The marking is a jumper .. On the bank of your hard drive are three recepticles... The first one is a long plug, of which the data flows... The second plug / receptical contain 4 rather heavy wires.. marked yellow, black, black and red.. they contain the D.C. wiring.. I assume by the colours The third plug has no opposite polarity receptical but contains jumper(s)... This is the jumper which determnes whether or not the hard drive is a slave or master drive... On one side of your hard drive, you should notice some printing which tells you how to make the drive a master or slave... You follow the instructions to make that drive a master or slave This will allow you to put another drive onto your existing computer including
Re: [digitalradio] Re: External hard drives?
I am suggesting a 2.5 HDD caddy, like these: http://newmode.us/caddies/ If you are lucky to get a new laptop, you simply purchase the appropriate caddy and move the HDD into it. I will speculate the vast majority of digital radio reflector subscribers are from the roll your own camp. The idea that an IT department would hand you a new laptop, have all the applications setup, have all the login scripts created, all the forced password renewals installed, and have your access to the operating system locked out... is a little hard to believe. But this is the reality in most corporations today. IF Andy works for a company that has no IT department (or has weak IT policies), he may have free reign over the laptop configuration. IF NOT, my solution is the safest way to keep his business use and personal use of the company asset separated. For the rest of us who roll our own... maybe you're lucky to work in the IT department. If not, you might be participating in a career limiting activity. When it involved our corporate network/computer security, I have personally seen more than one person walked out the front door. In any case, I am way off topic for the Digitalradio Forum. Sometimes I get up on the soapbox. I do hope I shed some light on methods companies use to keep their computer environments safe. 73 de Bob - KØRC in MN - Original Message - From: Salomao Fresco To: digitalradio@yahoogroups.com Sent: Friday, December 29, 2006 8:18 PM Subject: Re: [digitalradio] Re: External hard drives? Well, I believe your solution is way more complicated to perform. Besides, what use will have the docking station if the laptop gets replaced for instace for another brand? The USB PEN drive will work on almost every computer provided that the programs were correctly installed. And there is enough space on a 2Gb pen drive to install a version of the SO of your choice and make it bootable. I know what I'm talking, because I've allready done it. The docking station is waaay more expensive than the 20 bucks of a pen drive. Give it a try, if it doesn't work, the worst that can happen is getting stuck with a usb pen drive that can carrie a lot of files. Think of it. Regards On 12/30/06, Robert Chudek - KØRC [EMAIL PROTECTED] wrote: Well in christ's name (your terminology), your solution doesn't solve Andy's problem of putting personal software on a company computer. You missed the part that the registry is going to get updated (if it is even accessible). Read on. Credible IT departments tie down the operating system very tight in order to reduce the probability of employees hauling worms, viruses, and other crap into the office and spreading it across the Enterprise. I know, I ran a corporate IT department for 8 years. From a pure IT perspective, laptops are the most dangerous PC's on the Enterprise. It's much easier to control and manage desktop machines. The solution I would propose is to purchase a new drive and caddy for the laptop. Typically there is one screw that holds the HDD into the laptop and that screw is accessible from the outside of the case. Depending on the drive size you want, this can be less than a $100 investment. Get your own drive, format it up, load your OS, and install your personal applications. Swap the drives when you want to run your radio applications at home. But be aware if you bring your laptop into work with your personal drive installed, you'll get hauled in front of the CIO to explain why you are putting the company infrastructure in jeopardy. And the incident will be written up in your permanent record. If this sounds blunt and excessive... well you don't understand the nightmares IT departments face, trying to support large networks that wrap around the world. I don't know for whom Andy works, but if it's a large corporation with an IT staff, he may find the screw holding the disk caddy into his new laptop has been superglued into place. My engineers didn't go to that extreme, but if there was a laptop suspected of issues, it got a fresh format and a standard build of corporate licensed software installed. 73 de Bob - KØRC in MN - Original Message - From: Salomao Fresco To: digitalradio@yahoogroups.com Sent: Friday, December 29, 2006 2:26 PM Subject: Re: [digitalradio] Re: External hard drives? Hi to all! I believe there is a big confusion! On the first post Andy states this: I just got a new company laptop. What the heck does he need to know about master, slave, falt cables and color of the power cables? He is talking about a laptop for Christ sake. He is asking you the time and you're telling him how the clocks work. He only wants to know if it is possible to load the Ham radio software that he needs to work digi modes
Re: [digitalradio] SSB mixed with Mixw output?
Chuck, Well even with the new email header, the voice is still saying Trial... Trial... ;-) 73 de Bob - KØRC in MN - Original Message - From: Chuck Mayfield - AA5J To: digitalradio@yahoogroups.com Sent: Tuesday, December 26, 2006 3:09 PM Subject: Re: [digitalradio] SSB mixed with Mixw output? Sorry all. I should have changed the subject line on my last. I recently downloaded and installed MixW2.17. The problem I am having is an USB audio burst that appears periodically in (apparently) both the received and transmitted audio approximately once each four seconds. I disconnected from the sound card and from the radio and recorded a sample into a wav file. Can anyone help me with this problem? I attached the sample, but am not sure it will accompany this message. 73, Chuck AA5J
Re: [digitalradio] SOLAR TSUNAMI: X6-category flare, Dec 6, 2006
Jerry, thanks for the link... lots of educational material on that site, especially if your interest lies in propagation forecasting and Potentially Hazardous Asteroids! 73 de Bob - KØRC in MN - Original Message - From: Jerry W To: digitalradio@yahoogroups.com Sent: Saturday, December 09, 2006 9:03 AM Subject: [digitalradio] SOLAR TSUNAMI: X6-category flare, Dec 6, 2006 There is a short video clip on www.spaceweather.com of the SOLAR TSUNAMI. Jerry - K0HZI
[digitalradio] Well-behaved... (was Re: New 80m USA Keybaording Digi Frequencies)
Bonnie, KQ6XA in part wrote, The fact is, there's a proposed solution on the table. If you have a truly constructive suggestion, let's hear it. Sexist or condescending remarks do nothing to advance the discussion. KØRC response, Pulitzer Prize-winning author Laurel Thatcher Ulrich doesn't view the Well-behaved women statement as sexist or condescending. My apology is extended to you (and any others that may have been offended) if you took it in this context. As you will discover in the following link, these words have become a universal slogan for independent women across the globe. http://www.loyno.edu/newsandcalendars/loyolatoday/2004/11/ulrich.html Now to re-quote a statement from one of your own messages to an educated user... Hopefully you will research the situation, educate yourself, and get back to us at some point with a suggestion. Bonnie KQ6XA This will be my last comment on the topic. As you suggested, I do want to advance the discussion. In reality, I already make my position clear in a previous message. Concisely; I believe creating a regimented menu of frequencies for the 80m band is wasted time and energy. Guidelines - fine, chanelization and frequency coordination are the state of VHF/UHF operations, not HF. Here is a copy of my complete message: This is nuts! This is equivalent to rearranging the deck chairs on the Titanic. Operators are not going to adhere to a regimented bandplan which slices spectrum up into slivers of Hertz. It implies exclusivity to mode. And where will the next dozen yet-to-be-invented digital technologies fit in? Do we really want to setup frequency coordinators for the HF bands? In addition, to say CW will be squeezed down into the bottom 40 KHz ignores reality. Less than 20% of the ham population hold the Extra class license. They will enjoy 25 KHz of spectrum. Do you really think 80% of the ham population will find a comfortable fit in the remaining 15 KHz? To say CW has 500 KHz available (all of 80/75 meters) again ignores reality. How much CW activity do you find in the upper 200 KHz on 20m? What I hear is about 1/10-WPM CW... oh, wait... those are the tuner-uppers on top of the DX stations, it's not really CW. I perceive radio operators will adjust their 80m operating habits to mimmic 20m. The only difference I expect will be during RTTY contests, when stations will wash down further, toward 3500 KHz instead of up past 3600 KHz. There's little need for a menu of digital frequency assignments. If you want channelization, enjoy the 60m band experience. 73 de Bob - K0RC in MN 73 de Bob - KØRC in MN
Re: [digitalradio] Re: New 80m USA Keyboarding Digi Frequencies
Bonnie, That statement is quite arrogant... Skip IS educated on the topic and provided several insights regarding current spectrum usage. Your next message suggests to re-crystal hundreds of rigs just so your bandplan can fall into place and be implemented? I realize well-behaved women seldom make history, but I doubt your name will be associated with the future structure of the lower 100 KHz of the 80m band. But with your insistence and repeated broadcast of the bandplan, this looks like the driving force to me. My apology if you find this blunt. But I don't see you holding back on bluntness with others in your messages. In reality, this is a frank discussion. 73 de Bob - KØRC in MN - Original Message - From: expeditionradio To: digitalradio@yahoogroups.com Sent: Thursday, December 07, 2006 9:18 AM Subject: [digitalradio] Re: New 80m USA Keyboarding Digi Frequencies Skip KH6TY wrote: If someone is going to propose a bandplan then it might be a good idea to first educate oneself as to the current usage and limitations, since that IS important! Hopefully you will research the situation, educate yourself, and get back to us at some point with a suggestion. Bonnie KQ6XA
Re: [digitalradio] Re: RTTY Hall of Shame
Although I admire and support the concept, deployment, and technical achievement of the NCDXA International Beacon System, I view this system as a secondary user of the amateur radio spectrum with all the rights and privileges of a secondary user. Certainly the goal of avoiding interference to this resource is admirable, but a defacto no interference policy will be a futile exercise. Publishing a partial list of operators who have strayed onto 14.100 mHz does nothing to reduce interference. However, if no interference is a desired goal, a new STA license should be submitted with a request for clear channels of operation, maybe a kHz or so *outside* the amateur radio bands. According to the NCDXF/IARU website, the beacon system was originally deployed in 1979. During the past 25 years, hardware and beacon monitoring software have been developed, marketed and sold. The international value of this radio propagation system could be leveraged to petition the FCC for a new STA. Or maybe it's time for this technology to migrate from amateur status to full blown commercial status, just like many other developments in the past. The most recent example that comes to my mind is the development of the PacketCluster system. It was originally conceived and developed by Dick Newell - AK1A to help DXers monitor DX station activities. Dick developed this system with assistance from many amateur radio operators. Several years later the product was taken to the commercial market as Cerulean Technologies. In 2000 this company was purchased by Aether Systems for $150 million. Today, the mobile communication systems used by hundreds of police and emergency services companies are the result of one amateur radio product being taken to the commercial marketplace. Like I said, maybe it's time for the beacon system to move to the next level too. 73 de Bob - KØRC in MN - Original Message - From: Michael Keane K1MK To: digitalradio@yahoogroups.com Sent: Tuesday, September 26, 2006 11:00 AM Subject: Re: [digitalradio] Re: RTTY Hall of Shame At 11:51 PM 9/25/06, Patrick Soileau wrote: I fail to see where beacons are more important than QSOs. They're not. Which is why the FCC rules do not permit US stations to operate automatically controlled beacons on HF; and why W6WX and KH6YY require STAs for their beacon operations. 73, Mike K1MK Michael Keane K1MK [EMAIL PROTECTED] [Non-text portions of this message have been removed] Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) * To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
