Re: [Flexradio] De:*Érick (F4DDN):Friends fle xures, goodnight!
Bonjour, 9h ou 21h (plus logique sur 80m en hiver) ? ... de mon côté je vais encore à la mine la journée ... . Amitiés Jean-marc F1HDI flex3000 f4ddn écrit : Amis Flexeurs, bonsoir! Voilà nous sommes 4 c'est un début ! Participants : F4DDN Erick dans le 80 F1BCS Jacques dans le 94 F1AQW Philippe dans le 33 F1EDG Jean-Pierre dans le 18 Après vous avoir interrogés, les uns et les autres, nous sommes d'accord pour tenter l'expérience d'un QSO hebdomadaire Chaque Mardi à 9 heures vers 3650 +/- le QRM ( selon la formule de Jacques) Pour ceux qui sont Skype, mettez le en route j'enverrai la QRG en message si il y a beaucoup de variation par rapport au plan 73 à tous F4DDN / ÉRICK/FRANCE -- Friends flexures, goodnight! Here we are 4 is a start! Participants: Erick F4DDN in the 80 F1BCS Jacques in the 94 F1AQW Philip in the 33 F1EDG Jean-Pierre in 18 After you have interviewed each other and we agreed to try the experiment of a QSO Weekly Every Tuesday at 9 o'clock to 3650 + / - the QRM (in the words of Jacques) For those who have Skype, put the way I will send a message to QRG if there is a lot of variation from the plan 73 to all F4DDN / ERICK / FRANCE --- http://f4ddn.skyrock.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to jmb...@teaser.fr ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
[Flexradio] MFJ Noise Canceller Flex3000 Video
I have as promised created a second video showing the use of the MFJ 1025 Noise Canceller and the Flex 3000 radio. This is part one of a multi part series which I will record showing various things about my setup - the next part will show adjusting the phasing controls to attain a good null. Hope you enjoy the video http://www.youtube.com/watch?v=DpftxVd-jZ8 73 Anthony VK3FAJM ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
[Flexradio] Clip on fiferrite beads and Astron SS-30M
[Background] Well I've found a used F3K to purchase and it's on the way. While I'm waiting I thought I would do some reading. I came across sever inquires about RFI/EMI interference. Seems like most are using the clip on type ferrite beads. So looking at one of my current USB connectors I see two different ferrites - one on each end. First one is approximately 2 long and ¾ diameter. Second on is 1 x ½. I also notice that on the first one the outer insulator is trimmed so that the ferrite core makes direct contact with the shield. The second one just mounts around the outer insulator. [Question] So my question is which is better, mounted on the shield or insulator? Or does it just depend on the inside diameter of the ferrite? [Background] My decision to purchase a F3K type radio was based on some modifications I did for a friend. My friend uses a Ten Tec Orion 1, which I modified to include a buffer amplifier for the IF and a LP-Pan adapter. This combination is what got me started using PowerSDR. In doing so I used a Astron SS-30M (unlighted meters) and Astron SS-30M (lighted meters) as a supply for the Orion. While using both power supply's I noticed a background signal that would start on the high end of the display and move slowly down the frequency. From what I can find out this is a known problem with this power supply(s). [Question] Is there a way to fix this or would I be better off just going back to a leaner supply? tnx Don ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] MFJ Noise Canceller Flex3000 Video
Excellent Demo. You might comment what you are using for your primary and secondary antennas. I found on using the MFJ1026 that the built in antenna did not pick up enough of the noise to cancel out. Going with an external antenna did the trick. 73's, Jerry WB0UZW. -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Anthony M Sent: Monday, October 19, 2009 4:20 AM To: flexradio@flex-radio.biz Subject: [Flexradio] MFJ Noise Canceller Flex3000 Video I have as promised created a second video showing the use of the MFJ 1025 Noise Canceller and the Flex 3000 radio. This is part one of a multi part series which I will record showing various things about my setup - the next part will show adjusting the phasing controls to attain a good null. Hope you enjoy the video http://www.youtube.com/watch?v=DpftxVd-jZ8 73 Anthony VK3FAJM ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to jjohn...@cableone.net ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] MFJ Noise Canceller Flex3000 Video
Nice demothanks. My question... can't this be done in SW internal to the flex and PowerSDR? Hint Hint Eric...et al. Pete WA2ODO Anthony M wrote: I have as promised created a second video showing the use of the MFJ 1025 Noise Canceller and the Flex 3000 radio. This is part one of a multi part series which I will record showing various things about my setup - the next part will show adjusting the phasing controls to attain a good null. Hope you enjoy the video http://www.youtube.com/watch?v=DpftxVd-jZ8 73 Anthony VK3FAJM ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to pman...@gmail.com ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] MFJ Noise Canceller Flex3000 Video
One of the experimental versions of PowerSDR has this capability. The software is still under development and requires the proper hardware (two discrete receivers that are frequency, phase and gain locked), so it is limited to the FLEX-5000 with an RX2. Check out Lee's blog on Diversity RX http://w9oy-sdr.blogspot.com/2009_07_01_archive.html http://w9oy-sdr.blogspot.com/2009_08_01_archive.html If you would like you know more about it, post a topic to the FlexEdge reflector. -Tim -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Peter Manfre Sent: Monday, October 19, 2009 8:27 AM To: FlexRadio@flex-radio.biz Subject: Re: [Flexradio] MFJ Noise Canceller Flex3000 Video Nice demothanks. My question... can't this be done in SW internal to the flex and PowerSDR? Hint Hint Eric...et al. Pete WA2ODO Anthony M wrote: I have as promised created a second video showing the use of the MFJ 1025 Noise Canceller and the Flex 3000 radio. This is part one of a multi part series which I will record showing various things about my setup - the next part will show adjusting the phasing controls to attain a good null. Hope you enjoy the video http://www.youtube.com/watch?v=DpftxVd-jZ8 73 Anthony VK3FAJM ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to pman...@gmail.com ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to telli...@itsco.com ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
[Flexradio] compare with PSDR NB?
Hi Anthony, That's impressive. How does the effectiveness of the MFJ external until compare with the PowerSDRs two noise blankers? Best regards, Michael Jones W0STB SCSI Toolbox LLC www.scsitoolbox.com 303-972-2072 ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] compare with PSDR NB?
I really think we should be comparing apples to apples. I would suggest that everyone who is impressed by the MFJ product go to their website, read the description of what this is and then read the eHam comments. 73 Lee K9WRU Quoting Michael Jones mi...@scsitoolbox.com: Hi Anthony, That's impressive. How does the effectiveness of the MFJ external until compare with the PowerSDRs two noise blankers? Best regards, Michael Jones W0STB SCSI Toolbox LLC www.scsitoolbox.com 303-972-2072 ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to herbe...@centurytel.net ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Noise Cancelers and flex 3000
I did not say it was impossible, I merely asked to show the miracle device rather than just the Flex. Assuming this does as you say why is the electronics not included in Flex and other rigs? Burt --- On Mon, 10/19/09, Anthony Martin anth...@consultexcel.com.au wrote: That is exactly what happened in the video, However many people said its not possible so it must be a fake! Tonight I'll make another one showing me press the MFJ buttons on/off again etc. To put it simply, without the MFJ 1025 I'd shut up shop and couldn't operate HF. -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Jerry Johnson Sent: Monday, October 19, 2009 3:32 PM To: 'Anthony Martin'; flexradio@flex-radio.biz Subject: Re: [Flexradio] Noise Cancelers and flex 3000 I didn't get to see Anthony's video, but I run an MFJ 1026. My main antenna is a W5GI dipole and my second antenna is a vertical. The MFJ does a great job of nulling out the noise. It can make the noise disappear and reveal signals you couldn't otherwise hear. It's basic theory of adding in a signal out of phase to cancel something out. The secondary antenna is the keys to eliminating some interference. -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Anthony Martin Sent: Sunday, October 18, 2009 4:21 PM To: 'Anthony M'; flexradio@flex-radio.biz Subject: Re: [Flexradio] Noise Cancelers and flex 3000 Ive taken down the video for the time being - But will re-do tonight showing my physically pressing the on/off button of the MFJ. Had numerous people think it wasn't real because I didn't show the button pressing. I'll re-do it to silence the fools - but then they'll pick something else -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Anthony M Sent: Sunday, October 18, 2009 9:48 PM To: flexradio@flex-radio.biz Subject: [Flexradio] Noise Cancelers and flex 3000 Hi Guys If anyone is interested ive taken a video of the MFJ 1025 noise canceler and the Flex 3000 in action. Quite a dramatic difference in the signal as you can see + hear it.. http://www.youtube.com/watch?v=9aJc5KflYKw Cheers ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to anth...@consultexcel.com.au ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to jjohn...@cableone.net ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to anth...@consultexcel.com.au ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to k1...@yahoo.com ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] compare with PSDR NB?
I don't know what you mean apples-to-apples? I'd just like to see hear how the Flex/PSDR combination deals with the noise compared to the MFJ unit by itself. Does the hardware unit do a better job of eliminating the noise or doesn't it? Best regards, Michael Jones W0STB SCSI Toolbox LLC www.scsitoolbox.com 303-972-2072 -Original Message- From: herbe...@centurytel.net [mailto:herbe...@centurytel.net] Sent: Monday, October 19, 2009 10:46 AM To: flexradio@flex-radio.biz; mi...@scsitoolbox.com Subject: Re: [Flexradio] compare with PSDR NB? I really think we should be comparing apples to apples. I would suggest that everyone who is impressed by the MFJ product go to their website, read the description of what this is and then read the eHam comments. 73 Lee K9WRU Quoting Michael Jones mi...@scsitoolbox.com: Hi Anthony, That's impressive. How does the effectiveness of the MFJ external until compare with the PowerSDRs two noise blankers? Best regards, Michael Jones W0STB SCSI Toolbox LLC www.scsitoolbox.com 303-972-2072 ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to herbe...@centurytel.net ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] compare with PSDR NB?
Architecturally, PowerSDR and the FLEX-5000+RX2 should. For diversity RX techniques to work most efficiently, the two receivers should be frequency, phase and gain coherent in order to achieve the proper gain and phase offset values to null or enhance the signal of interest, whether that be noise or a weak DX station. Standalone units do not have this coherency, so they will not do as good of a job as two locked receivers. What is also very important is the antenna configuration for diversity reception. Two antennas of the same polarization that are not more than a 1/4 wavelength apart will not be able to capture the incoming signals properly to provide high resolution diversity no matter what dual receiver system you are using. Note the PowerSDR diversity software in development is pre-alpha. More at the proof of concept stage than anything else. It still lacks a good user interface with adequate resolution and the ability to automatically null or enhance a signal of interest. One other thing to note is that we are discussing noise reduction/eliminating techniques and not resistance to selective fading, which is another diversity RX technique that you can use now with the FLEX-5000+RX2. You just use your ears and the gray matter between them to discern the best signal-to-noise ratio. One day, that to should be automated in the software. -Tim -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Michael Jones Sent: Monday, October 19, 2009 1:14 PM To: herbe...@centurytel.net; flexradio@flex-radio.biz Subject: Re: [Flexradio] compare with PSDR NB? I don't know what you mean apples-to-apples? I'd just like to see hear how the Flex/PSDR combination deals with the noise compared to the MFJ unit by itself. Does the hardware unit do a better job of eliminating the noise or doesn't it? Best regards, Michael Jones W0STB SCSI Toolbox LLC www.scsitoolbox.com 303-972-2072 -Original Message- From: herbe...@centurytel.net [mailto:herbe...@centurytel.net] Sent: Monday, October 19, 2009 10:46 AM To: flexradio@flex-radio.biz; mi...@scsitoolbox.com Subject: Re: [Flexradio] compare with PSDR NB? I really think we should be comparing apples to apples. I would suggest that everyone who is impressed by the MFJ product go to their website, read the description of what this is and then read the eHam comments. 73 Lee K9WRU Quoting Michael Jones mi...@scsitoolbox.com: Hi Anthony, That's impressive. How does the effectiveness of the MFJ external until compare with the PowerSDRs two noise blankers? Best regards, Michael Jones W0STB SCSI Toolbox LLC www.scsitoolbox.com 303-972-2072 ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to herbe...@centurytel.net ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to telli...@itsco.com ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] compare with PSDR NB?
On Mon, Oct 19, 2009 at 10:14 AM, Michael Jones mi...@scsitoolbox.com wrote: I don't know what you mean apples-to-apples? I'd just like to see hear how the Flex/PSDR combination deals with the noise compared to the MFJ unit by itself. Does the hardware unit do a better job of eliminating the noise or doesn't it? It works completely differently. A noise blanker works by momentarily muting the receive for high-amplitude, very short duration pulses. (Actually the noise blanker code in PowerSDR is even smart enough to fill in the gaps.) The MFJ unit works by using a separate antenna to receive the interfering signal, changing its phase an amplitude so that, when summed with the signal from the main antenna, nulls out the offending signal before it is passed on to the receiver. A noise blanker will work immediately with pulse-type noise and doesn't really need much adjustment. The MFJ noise-canceling box will work with any offending signal but must be carefully adjusted for each signal and will work with only one source of noise at a time. If you have more than one noise source it won't help you. So as you can see, they are completely different and work for different things. Some signals respond to a noise blanker. Some will work with the MFJ noise canceler. As for saying whether or not the MFJ unit is good, it helps a lot to understand how it works and the limitations of that method of noise cancellation. If you are interested in the MFJ approach to canceling an unwanted signal, it turns out that the alpha version of PowerSDR has the ability to do what the MFJ box does inside the radio if you have the second receiver. It is more useful in that it can be used to cancel out any signal, including distant QRM. -- 73 de Brian, WB6RQN/J79BPL ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] compare with PSDR NB?
I have to disagree, or maybe we aren't comparing the same things. They are both noise blankers. They both have one function - to minimize or eliminate noise. I don't care if one is free and one is $1,000,000 - they are both noise blankers so how do they compare in their function of blanking noise? I don't care how they do it, or what is involved at this point such as extra antennas, etc. I am not talking about comparing how they accomplish what they are supposed to do, I am talking about comparing the results of what they do. They both are supposed to blank noise, Which one does that best? Best Regards, Michael Jones W0STB www.scsitoolbox.com 303-972-2072 -Original Message- From: herbe...@centurytel.net [mailto:herbe...@centurytel.net] Sent: Monday, October 19, 2009 11:43 AM To: mi...@scsitoolbox.com Subject: RE: [Flexradio] compare with PSDR NB? I'll try again. If you are going to compare two things you really should consider just what the nature of the things being compared. Would you compare a YUGO and a Cadillac? If you want to compare the 3000 to something else you have to consider the second antenna and the phase relationships that are involved. 73 Lee Quoting Michael Jones mi...@scsitoolbox.com: I don't know what you mean apples-to-apples? I'd just like to see hear how the Flex/PSDR combination deals with the noise compared to the MFJ unit by itself. Does the hardware unit do a better job of eliminating the noise or doesn't it? Best regards, Michael Jones W0STB SCSI Toolbox LLC www.scsitoolbox.com 303-972-2072 -Original Message- From: herbe...@centurytel.net [mailto:herbe...@centurytel.net] Sent: Monday, October 19, 2009 10:46 AM To: flexradio@flex-radio.biz; mi...@scsitoolbox.com Subject: Re: [Flexradio] compare with PSDR NB? I really think we should be comparing apples to apples. I would suggest that everyone who is impressed by the MFJ product go to their website, read the description of what this is and then read the eHam comments. 73 Lee K9WRU Quoting Michael Jones mi...@scsitoolbox.com: Hi Anthony, That's impressive. How does the effectiveness of the MFJ external until compare with the PowerSDRs two noise blankers? Best regards, Michael Jones W0STB SCSI Toolbox LLC www.scsitoolbox.com 303-972-2072 ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to herbe...@centurytel.net ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] compare with PSDR NB?
On Mon, Oct 19, 2009 at 10:51 AM, Michael Jones mi...@scsitoolbox.com wrote: I have to disagree, or maybe we aren't comparing the same things. They are both noise blankers. No, actually they aren't. The NB function in PowerSDR is a noise blanker. The MFJ box is a noise canceler. They both have one function - to minimize or eliminate noise. Sort of. Let me give you an analogy. Your question appears to me something like asking, which is better, a dipole or a vertical antenna? They are both designed to transmit and receive radio waves so which one is better? I think that you will agree that, because they work in a different manner that there will be occasions where a dipole will be superior to a vertical and vice-versa. Are you doing NVIS or DX? Is the signal vertically or horizontally polarized? Unless I have the parameters of your application, I can't give you a meaningful answer. So, I believe that it is not possible to answer your question in a simple A/B or yes/no fashion. They are different and will perform differently in different situations. If the noise problem you are trying to solve is multiple sources of impulse noise, e.g ignition noise, then the NB function will perform better. If the problem is a single CW noise source, e.g. noise from a bad power supply, the NB won't work at all and the MFJ unit will work better. I don't care how they do it, or what is involved at this point such as extra antennas, etc. Then it is not possible to answer your question as stated. I am not talking about comparing how they accomplish what they are supposed to do, I am talking about comparing the results of what they do. They both are supposed to blank noise, Which one does that best? Given the parameters you have set for answering the question, I cannot answer your question. Good luck! -- 73 de Brian, WB6RQN/J79BPL ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] compare with PSDR NB?
OK - I have been looking at the two things as both being something that can eliminate noise. I guess that is too simple of an outlook. I'm not a noise scientist and so I didn't know that sometimes some kinds of noise need blanking and other kinds need cancelling. And I have no idea how to tell which kind of noise needs what. I don't know what kind of noise I have at my QTH so I don't know if I need a blanker or a canceller. Or both. I was hoping that by seeing and hearing a video I could see how the two compared. But apparently wanting to see and hear a comparison of these two things is a very bad thing to wish for - so I will be sure to just live with the noise that I have, knowing that there is not an answer to the question of how the MFJ unit compares to the PSDR NB button. Best regards, Michael Jones W0STB SCSI Toolbox LLC www.scsitoolbox.com 303-972-2072 -Original Message- From: br...@lloyd.com [mailto:br...@lloyd.com] On Behalf Of Brian Lloyd Sent: Monday, October 19, 2009 12:56 PM To: mi...@scsitoolbox.com Cc: herbe...@centurytel.net; flexradio@flex-radio.biz Subject: Re: [Flexradio] compare with PSDR NB? On Mon, Oct 19, 2009 at 10:51 AM, Michael Jones mi...@scsitoolbox.com wrote: I have to disagree, or maybe we aren't comparing the same things. They are both noise blankers. No, actually they aren't. The NB function in PowerSDR is a noise blanker. The MFJ box is a noise canceler. They both have one function - to minimize or eliminate noise. Sort of. Let me give you an analogy. Your question appears to me something like asking, which is better, a dipole or a vertical antenna? They are both designed to transmit and receive radio waves so which one is better? I think that you will agree that, because they work in a different manner that there will be occasions where a dipole will be superior to a vertical and vice-versa. Are you doing NVIS or DX? Is the signal vertically or horizontally polarized? Unless I have the parameters of your application, I can't give you a meaningful answer. So, I believe that it is not possible to answer your question in a simple A/B or yes/no fashion. They are different and will perform differently in different situations. If the noise problem you are trying to solve is multiple sources of impulse noise, e.g ignition noise, then the NB function will perform better. If the problem is a single CW noise source, e.g. noise from a bad power supply, the NB won't work at all and the MFJ unit will work better. I don't care how they do it, or what is involved at this point such as extra antennas, etc. Then it is not possible to answer your question as stated. I am not talking about comparing how they accomplish what they are supposed to do, I am talking about comparing the results of what they do. They both are supposed to blank noise, Which one does that best? Given the parameters you have set for answering the question, I cannot answer your question. Good luck! -- 73 de Brian, WB6RQN/J79BPL ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] compare with PSDR NB?
At 12:08 10/19/2009, Michael Jones wrote: there is not an answer to the question of how the MFJ unit compares to the PSDR NB button. What everyone has been trying to tell you is that which facility works better DEPENDS on what problem you have (which you have not specified). Imagine that each person's noise is like a disease, but of course the diseases are all somewhat different, but they can fall in piles like high blood pressure, cancer, emphysema, obesity, hangnail, etc. You are asking: which medicine is best for sick people, aspirin or penicillin? Well, it depends on what disease they have, what other meds they are taking, allergies that might occur, susceptibility to side effects, etc. You see how complex the question is??? Probably the best answer is: Try them both and pick the one (or both) that works best FOR YOU., -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html - ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
[Flexradio] Flex 5000 transmit spur
I just came across this contribution from Joel, W5ZN, in the top band contesting list, and was surprised to read the second paragraph (Also, be aware ...). As a prospective Flex 3000 purchaser, should I be concerned? --- Forwarded message follows --- Subject:Topband: noise floor Newsgroups: !topband To: 'Pete Parisetti' hb9...@gmail.com, topb...@contesting.com From: Joel Harrison w...@arrl.org Reply-To: w...@arrl.org Date: Sun, 18 Oct 2009 21:35:06 -0500 Message-ID: 80c27fa30e524e5796108d76c2458...@wgint.net Pete - one other thing I need to mention if you haven't noticed alreadyThe noise floor will be different with each of the three sampling rates (48, 96, 192). This doesn't change the signal to noise ratio will change the display. The lower the sampling rate the lower the noise floor. Also, be aware that the Flex 5000 has a transmit spur approximately 2.4 KHz down from the fundamental freq. If you are calling a station up 2 KHz or so and are running an amplifier you will most definitely put out a signal, thanks to the spur, that people can hear. Flex is very aware of this but they have NOT, repeat NOT fixed this. One of their software gurus did write a MANUAL software routine in PowerSDR to address this hardware issue and it does reduce the spur significantly but the procedure is a manual procedure and is only effective on one band at a time. If you change bands, you have to run the manual routine again. It is cumbersome. After being busted twice on two different bands because of this I no longer run my Flex 5000 on HF for transmitting. It has a very good receiver and the calibrated dBm scale is great to use for signal comparison and love it for that, but just be aware of the xmit spur. I can give you more specific details if desire. 73 Joel W5ZN -- 73 Ian, G3NRW ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] compare with PSDR NB?
Let me give this a shot..not a noise scientist either. Noise blankers work on narrow impulse type noise and noise cancelling works on broadband noise, think the crap from your neighbors plasma tv. An oversimplification and there is a bit of overlap in the kinds of noise each will handle but maybe this will help. Ron k0idt - Original Message - From: Michael Jones mi...@scsitoolbox.com To: 'Brian Lloyd' brian-wb6...@lloyd.com Cc: flexradio@flex-radio.biz Sent: Monday, October 19, 2009 2:08 PM Subject: Re: [Flexradio] compare with PSDR NB? OK - I have been looking at the two things as both being something that can eliminate noise. I guess that is too simple of an outlook. I'm not a noise scientist and so I didn't know that sometimes some kinds of noise need blanking and other kinds need cancelling. And I have no idea how to tell which kind of noise needs what. I don't know what kind of noise I have at my QTH so I don't know if I need a blanker or a canceller. Or both. I was hoping that by seeing and hearing a video I could see how the two compared. But apparently wanting to see and hear a comparison of these two things is a very bad thing to wish for - so I will be sure to just live with the noise that I have, knowing that there is not an answer to the question of how the MFJ unit compares to the PSDR NB button. Best regards, Michael Jones W0STB SCSI Toolbox LLC www.scsitoolbox.com 303-972-2072 -Original Message- From: br...@lloyd.com [mailto:br...@lloyd.com] On Behalf Of Brian Lloyd Sent: Monday, October 19, 2009 12:56 PM To: mi...@scsitoolbox.com Cc: herbe...@centurytel.net; flexradio@flex-radio.biz Subject: Re: [Flexradio] compare with PSDR NB? On Mon, Oct 19, 2009 at 10:51 AM, Michael Jones mi...@scsitoolbox.com wrote: I have to disagree, or maybe we aren't comparing the same things. They are both noise blankers. No, actually they aren't. The NB function in PowerSDR is a noise blanker. The MFJ box is a noise canceler. They both have one function - to minimize or eliminate noise. Sort of. Let me give you an analogy. Your question appears to me something like asking, which is better, a dipole or a vertical antenna? They are both designed to transmit and receive radio waves so which one is better? I think that you will agree that, because they work in a different manner that there will be occasions where a dipole will be superior to a vertical and vice-versa. Are you doing NVIS or DX? Is the signal vertically or horizontally polarized? Unless I have the parameters of your application, I can't give you a meaningful answer. So, I believe that it is not possible to answer your question in a simple A/B or yes/no fashion. They are different and will perform differently in different situations. If the noise problem you are trying to solve is multiple sources of impulse noise, e.g ignition noise, then the NB function will perform better. If the problem is a single CW noise source, e.g. noise from a bad power supply, the NB won't work at all and the MFJ unit will work better. I don't care how they do it, or what is involved at this point such as extra antennas, etc. Then it is not possible to answer your question as stated. I am not talking about comparing how they accomplish what they are supposed to do, I am talking about comparing the results of what they do. They both are supposed to blank noise, Which one does that best? Given the parameters you have set for answering the question, I cannot answer your question. Good luck! -- 73 de Brian, WB6RQN/J79BPL ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to rkola...@neb.rr.com No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.422 / Virus Database: 270.14.21/2445 - Release Date: 10/19/09 06:40:00 ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] compare with PSDR NB?
For someone who was only trying to help others, Lee is taking a great deal of flack. This has gotten rediculous. You can see and hear the comparison on the video clip. They are both noise blankers but the MFJ is far more effective because of the method it uses. A Chevy and a Rolls are both cars and both get you from point A to B but they're by no means the same. Accept the fact that the MFJ is much more effective, along with the fact that it requires a separate antenna and works on a totally differently principle. If you are willing to add the second antenna, buy the MFJ unit and you'll get better noise reduction than the internal unit on any radio could ever provide. At least until someone builds an MFJ style unit into a radio. By the way, they aren't really both noise blankers. The built in unit is a blanker. The MFJ unit is a noise canceller; very different. Just my 2 cents. George, NY2O - Original Message - From: Michael Jones mi...@scsitoolbox.com To: herbe...@centurytel.net Cc: flexradio@flex-radio.biz Sent: Monday, October 19, 2009 1:51 PM Subject: Re: [Flexradio] compare with PSDR NB? I have to disagree, or maybe we aren't comparing the same things. They are both noise blankers. They both have one function - to minimize or eliminate noise. I don't care if one is free and one is $1,000,000 - they are both noise blankers so how do they compare in their function of blanking noise? I don't care how they do it, or what is involved at this point such as extra antennas, etc. I am not talking about comparing how they accomplish what they are supposed to do, I am talking about comparing the results of what they do. They both are supposed to blank noise, Which one does that best? Best Regards, Michael Jones W0STB www.scsitoolbox.com 303-972-2072 -Original Message- From: herbe...@centurytel.net [mailto:herbe...@centurytel.net] Sent: Monday, October 19, 2009 11:43 AM To: mi...@scsitoolbox.com Subject: RE: [Flexradio] compare with PSDR NB? I'll try again. If you are going to compare two things you really should consider just what the nature of the things being compared. Would you compare a YUGO and a Cadillac? If you want to compare the 3000 to something else you have to consider the second antenna and the phase relationships that are involved. 73 Lee Quoting Michael Jones mi...@scsitoolbox.com: I don't know what you mean apples-to-apples? I'd just like to see hear how the Flex/PSDR combination deals with the noise compared to the MFJ unit by itself. Does the hardware unit do a better job of eliminating the noise or doesn't it? Best regards, Michael Jones W0STB SCSI Toolbox LLC www.scsitoolbox.com 303-972-2072 -Original Message- From: herbe...@centurytel.net [mailto:herbe...@centurytel.net] Sent: Monday, October 19, 2009 10:46 AM To: flexradio@flex-radio.biz; mi...@scsitoolbox.com Subject: Re: [Flexradio] compare with PSDR NB? I really think we should be comparing apples to apples. I would suggest that everyone who is impressed by the MFJ product go to their website, read the description of what this is and then read the eHam comments. 73 Lee K9WRU Quoting Michael Jones mi...@scsitoolbox.com: Hi Anthony, That's impressive. How does the effectiveness of the MFJ external until compare with the PowerSDRs two noise blankers? Best regards, Michael Jones W0STB SCSI Toolbox LLC www.scsitoolbox.com 303-972-2072 ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to herbe...@centurytel.net ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to gsha...@rochester.rr.com ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Flex 5000 transmit spur
At 12:38 10/19/2009, Ian Wade G3NRW wrote: If you are calling a station up 2 KHz or so and are running an amplifier you will most definitely put out a signal, thanks to the spur, that people can hear. Flex is very aware of this but they have NOT, repeat NOT fixed this. Doesn't type acceptance require that it be 60dB down or some such -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html - ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] MFJ Noise Canceller Flex3000 Video
The primary antenna is a 40M Loop that is up about 10-15 meters on one side and 4 meters on the other side. The noise antenna is a 40M dipole that runs parallel down one side of the loop. A word of warning however - If you're going to put your receive and tx antenna so close to each other you may need to modify your MFJ to cope with the copious amounts of RF it will cop. I had to (with help) Add a relay internally that grounded the noise antenna on TX so that the rf did not scramble the unit.. It should have been there from factory but I don't really know what MFJ were thinking leaving it out. In regards to the 1026 - I had option of buying both- the 1026 has a telescopic whip built in which is useless for 99% of people as the noise antenna must receive the noise as well as your primary antenna in order to null one out. Your receive capability is basically determined by your weakest antenna. The whip might be ok if you have super bad powerline noise that's coming into your house but that's about it. The 1025 is exactly the same unit (the board even says 1026) without the preamp (used for the telescopic whip) and without the telescopic whip which is kind of pointless anyways. Its also worth noting that it really is a pain in the *** to get the noise antenna and the tx antenna right - not to mention fiddling to get a perfect null but it can be done. That was the point of this video - to show that yes it CAN be done. Cheers, Anthony VK3FAJM -- From: Jerry Johnson jjohn...@cableone.net Sent: Monday, October 19, 2009 11:07 PM To: 'Anthony M' anth...@consultexcel.com.au; flexradio@flex-radio.biz Subject: Re: [Flexradio] MFJ Noise Canceller Flex3000 Video Excellent Demo. You might comment what you are using for your primary and secondary antennas. I found on using the MFJ1026 that the built in antenna did not pick up enough of the noise to cancel out. Going with an external antenna did the trick. 73's, Jerry WB0UZW. -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Anthony M Sent: Monday, October 19, 2009 4:20 AM To: flexradio@flex-radio.biz Subject: [Flexradio] MFJ Noise Canceller Flex3000 Video I have as promised created a second video showing the use of the MFJ 1025 Noise Canceller and the Flex 3000 radio. This is part one of a multi part series which I will record showing various things about my setup - the next part will show adjusting the phasing controls to attain a good null. Hope you enjoy the video http://www.youtube.com/watch?v=DpftxVd-jZ8 73 Anthony VK3FAJM ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to jjohn...@cableone.net ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to anth...@consultexcel.com.au ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] compare with PSDR NB?
I cannot get the noise blankers to do anything remotely like the MFJ can do.. Which is a shame.. -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Michael Jones Sent: Tuesday, October 20, 2009 3:40 AM To: flexradio@flex-radio.biz Subject: [Flexradio] compare with PSDR NB? Hi Anthony, That's impressive. How does the effectiveness of the MFJ external until compare with the PowerSDRs two noise blankers? Best regards, Michael Jones W0STB SCSI Toolbox LLC www.scsitoolbox.com 303-972-2072 ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to anth...@consultexcel.com.au ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Noise Cancelers and flex 3000
LOL.. -Original Message- From: Burt [mailto:k1...@yahoo.com] Sent: Tuesday, October 20, 2009 2:54 AM To: Anthony Martin Cc: flexradio@flex-radio.biz Subject: Re: [Flexradio] Noise Cancelers and flex 3000 I did not say it was impossible, I merely asked to show the miracle device rather than just the Flex. Assuming this does as you say why is the electronics not included in Flex and other rigs? Burt --- On Mon, 10/19/09, Anthony Martin anth...@consultexcel.com.au wrote: That is exactly what happened in the video, However many people said its not possible so it must be a fake! Tonight I'll make another one showing me press the MFJ buttons on/off again etc. To put it simply, without the MFJ 1025 I'd shut up shop and couldn't operate HF. -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Jerry Johnson Sent: Monday, October 19, 2009 3:32 PM To: 'Anthony Martin'; flexradio@flex-radio.biz Subject: Re: [Flexradio] Noise Cancelers and flex 3000 I didn't get to see Anthony's video, but I run an MFJ 1026. My main antenna is a W5GI dipole and my second antenna is a vertical. The MFJ does a great job of nulling out the noise. It can make the noise disappear and reveal signals you couldn't otherwise hear. It's basic theory of adding in a signal out of phase to cancel something out. The secondary antenna is the keys to eliminating some interference. -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Anthony Martin Sent: Sunday, October 18, 2009 4:21 PM To: 'Anthony M'; flexradio@flex-radio.biz Subject: Re: [Flexradio] Noise Cancelers and flex 3000 Ive taken down the video for the time being - But will re-do tonight showing my physically pressing the on/off button of the MFJ. Had numerous people think it wasn't real because I didn't show the button pressing. I'll re-do it to silence the fools - but then they'll pick something else -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Anthony M Sent: Sunday, October 18, 2009 9:48 PM To: flexradio@flex-radio.biz Subject: [Flexradio] Noise Cancelers and flex 3000 Hi Guys If anyone is interested ive taken a video of the MFJ 1025 noise canceler and the Flex 3000 in action. Quite a dramatic difference in the signal as you can see + hear it.. http://www.youtube.com/watch?v=9aJc5KflYKw Cheers ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to anth...@consultexcel.com.au ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to jjohn...@cableone.net ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to anth...@consultexcel.com.au ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to k1...@yahoo.com ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Flex 5000 transmit spur
Well, it depends. If the spur is just 2.4 kHz from the carrier, and depending on its energy level relative to the unmodulated carrier level, and whether or not it is a discrete tone, or gets modulated as the main signal does, e.g., SSB mode, it might possibly slip through regulatory cracks if it is classified as in-band spurious energy. I have not examined my F5KA on my spectrum analyzer yet, but now I guess I cannot resist. Sure would like to know more... Bob, KF6BC On Oct 19, 2009, at 1:23 PM, Dave Gomberg wrote: At 12:38 10/19/2009, Ian Wade G3NRW wrote: If you are calling a station up 2 KHz or so and are running an amplifier you will most definitely put out a signal, thanks to the spur, that people can hear. Flex is very aware of this but they have NOT, repeat NOT fixed this. Doesn't type acceptance require that it be 60dB down or some such -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html - ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to jeffe...@antelecom.net ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] compare with PSDR NB?
My nb and nr don't really do much, although I have not adjusted them much. I cant say I ever heard a dsp noise remover work very well without distorting the signal a lot. The mfj noise canceller, and others of its ilk CAN work fantastic on some noises, but need a lot of adjusting and a good separate antenna from what I have read. The video was amazing, but it might not always work that way. Brett - Original Message - From: Michael Jones mi...@scsitoolbox.com To: 'Brian Lloyd' brian-wb6...@lloyd.com Cc: flexradio@flex-radio.biz Sent: Monday, October 19, 2009 3:08 PM Subject: Re: [Flexradio] compare with PSDR NB? OK - I have been looking at the two things as both being something that can eliminate noise. I guess that is too simple of an outlook. I'm not a noise scientist and so I didn't know that sometimes some kinds of noise need blanking and other kinds need cancelling. And I have no idea how to tell which kind of noise needs what. I don't know what kind of noise I have at my QTH so I don't know if I need a blanker or a canceller. Or both. I was hoping that by seeing and hearing a video I could see how the two compared. But apparently wanting to see and hear a comparison of these two things is a very bad thing to wish for - so I will be sure to just live with the noise that I have, knowing that there is not an answer to the question of how the MFJ unit compares to the PSDR NB button. Best regards, Michael Jones W0STB SCSI Toolbox LLC www.scsitoolbox.com 303-972-2072 -Original Message- From: br...@lloyd.com [mailto:br...@lloyd.com] On Behalf Of Brian Lloyd Sent: Monday, October 19, 2009 12:56 PM To: mi...@scsitoolbox.com Cc: herbe...@centurytel.net; flexradio@flex-radio.biz Subject: Re: [Flexradio] compare with PSDR NB? On Mon, Oct 19, 2009 at 10:51 AM, Michael Jones mi...@scsitoolbox.com wrote: I have to disagree, or maybe we aren't comparing the same things. They are both noise blankers. No, actually they aren't. The NB function in PowerSDR is a noise blanker. The MFJ box is a noise canceler. They both have one function - to minimize or eliminate noise. Sort of. Let me give you an analogy. Your question appears to me something like asking, which is better, a dipole or a vertical antenna? They are both designed to transmit and receive radio waves so which one is better? I think that you will agree that, because they work in a different manner that there will be occasions where a dipole will be superior to a vertical and vice-versa. Are you doing NVIS or DX? Is the signal vertically or horizontally polarized? Unless I have the parameters of your application, I can't give you a meaningful answer. So, I believe that it is not possible to answer your question in a simple A/B or yes/no fashion. They are different and will perform differently in different situations. If the noise problem you are trying to solve is multiple sources of impulse noise, e.g ignition noise, then the NB function will perform better. If the problem is a single CW noise source, e.g. noise from a bad power supply, the NB won't work at all and the MFJ unit will work better. I don't care how they do it, or what is involved at this point such as extra antennas, etc. Then it is not possible to answer your question as stated. I am not talking about comparing how they accomplish what they are supposed to do, I am talking about comparing the results of what they do. They both are supposed to blank noise, Which one does that best? Given the parameters you have set for answering the question, I cannot answer your question. Good luck! -- 73 de Brian, WB6RQN/J79BPL ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to brett.gazdzin...@verizon.net ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Flex 5000 transmit spur
Except, that most radios made after WW II can hear signals much weaker than that. 60dB down from 1 KW is 1 mW. QRP guys can work wonders at that level !! And considering the last couple expeditions, that's about the signal level we are hearing at this point in the SS Cycle !! 73, Dick, W1KSZ -Original Message- From: Dave Gomberg da...@wcf.com Sent: Oct 19, 2009 1:23 PM To: flexradio@flex-radio.biz Subject: Re: [Flexradio] Flex 5000 transmit spur At 12:38 10/19/2009, Ian Wade G3NRW wrote: If you are calling a station up 2 KHz or so and are running an amplifier you will most definitely put out a signal, thanks to the spur, that people can hear. Flex is very aware of this but they have NOT, repeat NOT fixed this. Doesn't type acceptance require that it be 60dB down or some such -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html - ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to w1...@earthlink.net ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] MFJ Noise Canceller Flex3000 Video
I have the MFJ-1026. I don't use the useless whip antenna but this model does have the built in amplifier. The gain of this amp can be set by internal jumpers and it can be used to amplify the signal from the external sense antenna. The amplifier can be switched in and out on the front panel. I find the amp very useful in helping to get the right amount of injection signal. I would recommend the 1026 model over the 1025. Thank you for the video Anthony. How much noise attenuation are you getting. I have easily got a 20db reduction in line noise with my MF-1026. More reduction requires more care with the sense antenna levels I think but can be done. Mark N1UK - Original Message - From: Anthony M anth...@consultexcel.com.au To: Jerry Johnson jjohn...@cableone.net; flexradio@flex-radio.biz Sent: Monday, 19 October, 2009 3:27 PM Subject: Re: [Flexradio] MFJ Noise Canceller Flex3000 Video The primary antenna is a 40M Loop that is up about 10-15 meters on one side and 4 meters on the other side. The noise antenna is a 40M dipole that runs parallel down one side of the loop. A word of warning however - If you're going to put your receive and tx antenna so close to each other you may need to modify your MFJ to cope with the copious amounts of RF it will cop. I had to (with help) Add a relay internally that grounded the noise antenna on TX so that the rf did not scramble the unit.. It should have been there from factory but I don't really know what MFJ were thinking leaving it out. In regards to the 1026 - I had option of buying both- the 1026 has a telescopic whip built in which is useless for 99% of people as the noise antenna must receive the noise as well as your primary antenna in order to null one out. Your receive capability is basically determined by your weakest antenna. The whip might be ok if you have super bad powerline noise that's coming into your house but that's about it. The 1025 is exactly the same unit (the board even says 1026) without the preamp (used for the telescopic whip) and without the telescopic whip which is kind of pointless anyways. Its also worth noting that it really is a pain in the *** to get the noise antenna and the tx antenna right - not to mention fiddling to get a perfect null but it can be done. That was the point of this video - to show that yes it CAN be done. Cheers, Anthony VK3FAJM -- From: Jerry Johnson jjohn...@cableone.net Sent: Monday, October 19, 2009 11:07 PM To: 'Anthony M' anth...@consultexcel.com.au; flexradio@flex-radio.biz Subject: Re: [Flexradio] MFJ Noise Canceller Flex3000 Video Excellent Demo. You might comment what you are using for your primary and secondary antennas. I found on using the MFJ1026 that the built in antenna did not pick up enough of the noise to cancel out. Going with an external antenna did the trick. 73's, Jerry WB0UZW. -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Anthony M Sent: Monday, October 19, 2009 4:20 AM To: flexradio@flex-radio.biz Subject: [Flexradio] MFJ Noise Canceller Flex3000 Video I have as promised created a second video showing the use of the MFJ 1025 Noise Canceller and the Flex 3000 radio. This is part one of a multi part series which I will record showing various things about my setup - the next part will show adjusting the phasing controls to attain a good null. Hope you enjoy the video http://www.youtube.com/watch?v=DpftxVd-jZ8 73 Anthony VK3FAJM ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] MFJ Noise Canceller Flex3000 Video
I don't have the MFJ model, I have the earlier ANC-4 model made by JPS. Yes, they require a good noise antenna, and yes, they can be tricky to get tuned properly, but my little ANC-4 would knock my local power line noise down far enough that it made operating possible at my apartment. Now that the power company has fixed the noisy lines here, I don't use it anymore, but it was a life saver for me when I needed it! jim KQ6EA --- On Mon, 10/19/09, Mark Robinson mark...@mindspring.com wrote: From: Mark Robinson mark...@mindspring.com Subject: Re: [Flexradio] MFJ Noise Canceller Flex3000 Video To: Anthony M anth...@consultexcel.com.au, Jerry Johnson jjohn...@cableone.net, flexradio@flex-radio.biz Date: Monday, October 19, 2009, 4:14 PM I have the MFJ-1026. I don't use the useless whip antenna but this model does have the built in amplifier. The gain of this amp can be set by internal jumpers and it can be used to amplify the signal from the external sense antenna. The amplifier can be switched in and out on the front panel. I find the amp very useful in helping to get the right amount of injection signal. I would recommend the 1026 model over the 1025. Thank you for the video Anthony. How much noise attenuation are you getting. I have easily got a 20db reduction in line noise with my MF-1026. More reduction requires more care with the sense antenna levels I think but can be done. Mark N1UK - Original Message - From: Anthony M anth...@consultexcel.com.au To: Jerry Johnson jjohn...@cableone.net; flexradio@flex-radio.biz Sent: Monday, 19 October, 2009 3:27 PM Subject: Re: [Flexradio] MFJ Noise Canceller Flex3000 Video The primary antenna is a 40M Loop that is up about 10-15 meters on one side and 4 meters on the other side. The noise antenna is a 40M dipole that runs parallel down one side of the loop. A word of warning however - If you're going to put your receive and tx antenna so close to each other you may need to modify your MFJ to cope with the copious amounts of RF it will cop. I had to (with help) Add a relay internally that grounded the noise antenna on TX so that the rf did not scramble the unit.. It should have been there from factory but I don't really know what MFJ were thinking leaving it out. In regards to the 1026 - I had option of buying both- the 1026 has a telescopic whip built in which is useless for 99% of people as the noise antenna must receive the noise as well as your primary antenna in order to null one out. Your receive capability is basically determined by your weakest antenna. The whip might be ok if you have super bad powerline noise that's coming into your house but that's about it. The 1025 is exactly the same unit (the board even says 1026) without the preamp (used for the telescopic whip) and without the telescopic whip which is kind of pointless anyways. Its also worth noting that it really is a pain in the *** to get the noise antenna and the tx antenna right - not to mention fiddling to get a perfect null but it can be done. That was the point of this video - to show that yes it CAN be done. Cheers, Anthony VK3FAJM -- From: Jerry Johnson jjohn...@cableone.net Sent: Monday, October 19, 2009 11:07 PM To: 'Anthony M' anth...@consultexcel.com.au; flexradio@flex-radio.biz Subject: Re: [Flexradio] MFJ Noise Canceller Flex3000 Video Excellent Demo. You might comment what you are using for your primary and secondary antennas. I found on using the MFJ1026 that the built in antenna did not pick up enough of the noise to cancel out. Going with an external antenna did the trick. 73's, Jerry WB0UZW. -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Anthony M Sent: Monday, October 19, 2009 4:20 AM To: flexradio@flex-radio.biz Subject: [Flexradio] MFJ Noise Canceller Flex3000 Video I have as promised created a second video showing the use of the MFJ 1025 Noise Canceller and the Flex 3000 radio. This is part one of a multi part series which I will record showing various things about my setup - the next part will show adjusting the phasing controls to attain a good null. Hope you enjoy the video http://www.youtube.com/watch?v=DpftxVd-jZ8 73 Anthony VK3FAJM ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to kq...@pacbell.net ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz
Re: [Flexradio] MFJ Noise Canceller Flex3000 Video
At 06:18 PM 10/19/2009, Jim Jerzycke wrote: I don't have the MFJ model, I have the earlier ANC-4 model made by JPS. Yes, they require a good noise antenna, and yes, they can be tricky to get tuned properly, but my little ANC-4 would knock my local power line noise down far enough that it made operating possible at my apartment. Now that the power company has fixed the noisy lines here, I don't use it anymore, but it was a life saver for me when I needed it! jim KQ6EA I had a similar situation on one location, unfortunately when I moved I sold the device and now I need it again. This whole discussion on noise cancelling is an eye opener, there are so many people that just buy a radio in a box and have no clue how things work. Instead of arguing so much they need to get a good book on radio theory and learn how the different aspects of radio work including noise cancelling. The SDR technology with dual receivers and antennas have the potential of improving on noise cancellers beyond anything that hardware would be capable of since they could eliminate multiple noise sources that are not related to one another. Cecil k5nwa www.softrockradio.org www.qrpradio.com http://parts.softrockradio.org/ Never take life seriously. Nobody gets out alive anyway. ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] compare with PSDR NB?
On Mon, Oct 19, 2009 at 2:33 PM, Anthony Martin anth...@consultexcel.com.au wrote: I cannot get the noise blankers to do anything remotely like the MFJ can do.. Which is a shame.. sigh Here is the thing: if you want to be able to use one or the other most effectively, you need to learn about how they work and about the different types of noise. The key word in the previous sentence is: LEARN One of the great things about this hobby is that there is a LOT to learn. One of the other great things about this hobby is that you can learn both from the experiences of others and YOUR OWN EXPERIENCE. You may need to *experiment* in order to determine which approach will work to solve your problem. Perhaps the first experiment you can try, one which will cost you nothing, is to test the noise-blanker and see what effect it has on the noise in question. If it has no effect, you have determined that you need to look in another direction. If it solves your problem, you are done. But if the noise blanker does not solve your noise problem you now have two choices: 1. locate and eliminate the source of noise. 2. try to cancel out the noise; Of the two, approach #1 is probably the more correct approach to take because it really solves the problem. If approach #1 does not work because either, a) you cannot locate the source of noise or, b) you are not allowed to eliminate the source of noise, e.g. it is your neighbor's brand new megabuck plasma TV and there is no way in hell he is going to let you touch it, then you may need to find a way to cancel the noise, e.g. try the MFJ box. So we really are trying to help out here. We are trying to help everyone understand how the two approaches vary and which is more likely to work and under what circumstances. One approach is not necessarily better than the other, they are just DIFFERENT. There are certainly circumstances where a NB will work and the MFJ noise canceler won't. The converse is also true. Pick the right tool for the job. -- 73 de Brian, WB6RQN/J79BPL ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Noise Cancelers and flex 3000
Assuming this does as you say why is the electronics not included in Flex and other rigs? It costs money for the extra parts and requires real-estate in the box making the box bigger. Not everyone wants or needs one but if you include it in the radio, everyone will have to pay for it. Those manufacturers who do not include it can then sell their box for less money. If only 10% of the people need that feature and everyone wants to pay less for a radio, which manufacturer is going to sell more radios? As for being included, if you buy a Flex 5000 with the second receiver, you have all the hardware you need to do this. It will also work for nulling out QRM, something that the MFJ box cannot. -- 73 de Brian, WB6RQN/J79BPL ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
[Flexradio] MFJ Noise Canceller Flex3000 Video
Love the video. The Flex panadaptor really shows the extent of the cancellation and you can see the signals pop up out of the noise. Can anyone tell what type of noise is being cancelled? Edwin Marzan AB2VW From: anth...@consultexcel.com.au To: flexradio@flex-radio.biz Date: Mon, 19 Oct 2009 20:20:29 +1100 Subject: [Flexradio] MFJ Noise Canceller Flex3000 Video I have as promised created a second video showing the use of the MFJ 1025 Noise Canceller and the Flex 3000 radio. This is part one of a multi part series which I will record showing various things about my setup - the next part will show adjusting the phasing controls to attain a good null. Hope you enjoy the video http://www.youtube.com/watch?v=DpftxVd-jZ8 73 Anthony VK3FAJM ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to edwin_mar...@hotmail.com Hotmail: Free, trusted and rich email service. Get it now. _ Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. http://clk.atdmt.com/GBL/go/171222985/direct/01/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] MFJ Noise Canceller Flex3000 Video
Most likely broadband powerline noise caused by arcing insulators and connections on high voltage powerlines. I was able to get nearly 20db of attenuation of this type of noise with my mfj. It al hinges on getting a good sense antenna Mark N1UK - Original Message - From: Edwin Marzan edwin_mar...@hotmail.com To: flexradio@flex-radio.biz Sent: Monday, 19 October, 2009 8:22 PM Subject: [Flexradio] MFJ Noise Canceller Flex3000 Video Love the video. The Flex panadaptor really shows the extent of the cancellation and you can see the signals pop up out of the noise. Can anyone tell what type of noise is being cancelled? Edwin Marzan AB2VW From: anth...@consultexcel.com.au To: flexradio@flex-radio.biz Date: Mon, 19 Oct 2009 20:20:29 +1100 Subject: [Flexradio] MFJ Noise Canceller Flex3000 Video I have as promised created a second video showing the use of the MFJ 1025 Noise Canceller and the Flex 3000 radio. This is part one of a multi part series which I will record showing various things about my setup - the next part will show adjusting the phasing controls to attain a good null. Hope you enjoy the video http://www.youtube.com/watch?v=DpftxVd-jZ8 73 Anthony VK3FAJM ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to edwin_mar...@hotmail.com Hotmail: Free, trusted and rich email service. Get it now. _ Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. http://clk.atdmt.com/GBL/go/171222985/direct/01/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to mark...@mindspring.com ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] MFJ Noise Canceller Flex3000 Video
Hi Guys, Its not powerline noise at all (I've had the power company out and the interference unit - they put it down to switch mode power supplies in the area?? -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Mark Robinson Sent: Tuesday, October 20, 2009 12:29 PM To: Edwin Marzan; flexradio@flex-radio.biz Subject: Re: [Flexradio] MFJ Noise Canceller Flex3000 Video Most likely broadband powerline noise caused by arcing insulators and connections on high voltage powerlines. I was able to get nearly 20db of attenuation of this type of noise with my mfj. It al hinges on getting a good sense antenna Mark N1UK - Original Message - From: Edwin Marzan edwin_mar...@hotmail.com To: flexradio@flex-radio.biz Sent: Monday, 19 October, 2009 8:22 PM Subject: [Flexradio] MFJ Noise Canceller Flex3000 Video Love the video. The Flex panadaptor really shows the extent of the cancellation and you can see the signals pop up out of the noise. Can anyone tell what type of noise is being cancelled? Edwin Marzan AB2VW From: anth...@consultexcel.com.au To: flexradio@flex-radio.biz Date: Mon, 19 Oct 2009 20:20:29 +1100 Subject: [Flexradio] MFJ Noise Canceller Flex3000 Video I have as promised created a second video showing the use of the MFJ 1025 Noise Canceller and the Flex 3000 radio. This is part one of a multi part series which I will record showing various things about my setup - the next part will show adjusting the phasing controls to attain a good null. Hope you enjoy the video http://www.youtube.com/watch?v=DpftxVd-jZ8 73 Anthony VK3FAJM ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to edwin_mar...@hotmail.com Hotmail: Free, trusted and rich email service. Get it now. _ Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. http://clk.atdmt.com/GBL/go/171222985/direct/01/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to mark...@mindspring.com ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to anth...@consultexcel.com.au ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
[Flexradio] Looking for FLEX Users that Have Been Successful on WINMOR using RMS Express v. 0.0.3.0
Are there any FLEX Users who have had success with RMS Express v. 0.3.0.0? If so could you share your configuratation with me? Rick indicated that there are potential issues with WINMOR and FLEX radios. Specifically: Latency of the Flex receiver. Since RMS Express/WINMOR is a real time ARQ protocol additional latency (delay) introduced by the receiver (or transmitter) can cause a problem with the protocol. This can probably be corrected (at the expense of throughput) by inserting additional delays for such installations. The latency I am describing is the actual delay from RF in to audio out and this can be considerable depending on filter selections and CPU Speed. Version 0.3.0.0 has an additional 500 ms delay added the repeat timer to handle most of these problems. CPU Loading. I have seen one FLEX user's CPU usage at 65% or higher and the high pulse CPU Loading of WINMOR during decoding could cause decoding delays if the FLEX software is using a high percentage of CPU cycles and a high priority thread. The only solution in this case may be a faster CPU or a multiple core CPU that can partition out the FLEX and RMS Express applications to separate cores. You might try and see if you can run the FLEX software at a normal or below normal priority using Task Manager. A normal forwarding exchange without traffic pending is on the order of 55 bytes sent and 55 bytes received +/-. If you make a connection and see this kind of information and the session ends normally it is a normal empty forwarding session. On a decent connection this will take on the order of 30 seconds .longer if there are lots of retries. This means that neither end had messages queued (posted to their outbox) addressed specifically to the other call sign. Read the HELP on addressing.you cannot use multiple addresses in a peer to peer message.only a single address to the call sign you are connecting to. I am wandering if I use my SignaLink-USB instead of the VAC if I might have better success? Allen - W9ON ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] MFJ Noise Canceller Flex3000 Video
Yes it did sound a bit too raw for powerline noise. I am lucky that I am the only house around, so any interference is from my house only apart from the power lines. Mark N1UK - Original Message - From: Anthony Martin anth...@consultexcel.com.au To: 'Mark Robinson' mark...@mindspring.com; 'Edwin Marzan' edwin_mar...@hotmail.com; flexradio@flex-radio.biz Sent: Monday, 19 October, 2009 9:07 PM Subject: RE: [Flexradio] MFJ Noise Canceller Flex3000 Video Hi Guys, Its not powerline noise at all (I've had the power company out and the interference unit - they put it down to switch mode power supplies in the area?? -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Mark Robinson Sent: Tuesday, October 20, 2009 12:29 PM To: Edwin Marzan; flexradio@flex-radio.biz Subject: Re: [Flexradio] MFJ Noise Canceller Flex3000 Video Most likely broadband powerline noise caused by arcing insulators and connections on high voltage powerlines. I was able to get nearly 20db of attenuation of this type of noise with my mfj. It al hinges on getting a good sense antenna Mark N1UK - Original Message - From: Edwin Marzan edwin_mar...@hotmail.com To: flexradio@flex-radio.biz Sent: Monday, 19 October, 2009 8:22 PM Subject: [Flexradio] MFJ Noise Canceller Flex3000 Video Love the video. The Flex panadaptor really shows the extent of the cancellation and you can see the signals pop up out of the noise. Can anyone tell what type of noise is being cancelled? Edwin Marzan AB2VW From: anth...@consultexcel.com.au To: flexradio@flex-radio.biz Date: Mon, 19 Oct 2009 20:20:29 +1100 Subject: [Flexradio] MFJ Noise Canceller Flex3000 Video I have as promised created a second video showing the use of the MFJ 1025 Noise Canceller and the Flex 3000 radio. This is part one of a multi part series which I will record showing various things about my setup - the next part will show adjusting the phasing controls to attain a good null. Hope you enjoy the video http://www.youtube.com/watch?v=DpftxVd-jZ8 73 Anthony VK3FAJM ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to edwin_mar...@hotmail.com Hotmail: Free, trusted and rich email service. Get it now. _ Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. http://clk.atdmt.com/GBL/go/171222985/direct/01/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to mark...@mindspring.com ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to anth...@consultexcel.com.au ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
Re: [Flexradio] Looking for FLEX Users that Have Been Successful on WINMOR using RMS Express v. 0.0.3.0
I am not familiar with RMS Express, but when timing is critical, make sure that the buffers between PowerSDR/ VAC / Application are set up correctly. Buffer over/under runs can cost time and CPU cycle times.. Maybe someone else has some actual RMS Express experience that can help. 73, Dudley WA5QPZ Allen Shuff wrote: Are there any FLEX Users who have had success with RMS Express v. 0.3.0.0? If so could you share your configuratation with me? Rick indicated that there are potential issues with WINMOR and FLEX radios. Specifically: Latency of the Flex receiver. Since RMS Express/WINMOR is a real time ARQ protocol additional latency (delay) introduced by the receiver (or transmitter) can cause a problem with the protocol. This can probably be corrected (at the expense of throughput) by inserting additional delays for such installations. The latency I am describing is the actual delay from RF in to audio out and this can be considerable depending on filter selections and CPU Speed. Version 0.3.0.0 has an additional 500 ms delay added the repeat timer to handle most of these problems. CPU Loading. I have seen one FLEX user's CPU usage at 65% or higher and the high pulse CPU Loading of WINMOR during decoding could cause decoding delays if the FLEX software is using a high percentage of CPU cycles and a high priority thread. The only solution in this case may be a faster CPU or a multiple core CPU that can partition out the FLEX and RMS Express applications to separate cores. You might try and see if you can run the FLEX software at a normal or below normal priority using Task Manager. A normal forwarding exchange without traffic pending is on the order of 55 bytes sent and 55 bytes received +/-. If you make a connection and see this kind of information and the session ends normally it is a normal empty forwarding session. On a decent connection this will take on the order of 30 seconds .longer if there are lots of retries. This means that neither end had messages queued (posted to their outbox) addressed specifically to the other call sign. Read the HELP on addressing.you cannot use multiple addresses in a peer to peer message.only a single address to the call sign you are connecting to. I am wandering if I use my SignaLink-USB instead of the VAC if I might have better success? Allen - W9ON ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to jhu...@austin.rr.com ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
[Flexradio] Noise Blanker
Hello! The noise blanker (like a built in antenna tuner) could be named better. It would truly be a wonderful if such a device existed. But it doesn't. The best way to test the feature is to power something up that generates repetitive noise. A hair dryer and/or an electric drill are good choices. Now push the Noise Blanker button and Wow it does exactly what it was designed to do. And that is, blank out repetitive noise pulses. The feature on my Flex 5K works quite well. In fact, it works far better than the noise blanker on my old 756 Pro. As far as the new diversity reception feature goes, I suspect that once the code is worked out, the 5K with the second receiver option will be most effective at reducing /eliminating all kinds of noise and interference issues. You can be sure of one thing though. And that is; whatever Flex comes out with it, it will be top notch (excuse the pun). But unlike MFJ, Flex will improve it where needed with future releases at no additional cost. This will never be the case with MFJ. Flex.A radio by any other name is obsolete out of the box $ 47.55 my two cents worth (adjusted for inflation) Jim AB2CD ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to arch...@mail-archive.com
