Re: [digitalradio] Re: TAK-Tenna
What really matters with any antenna design is to compare the antenna against another antenna to find out the actual real world performance. Most Tak-tenna users have not done this from what I have been reading. This is probably due to not having the space for a full size antenna, since if they had the space they would not choose something that is less effective. Some of the comparisons that have been done have been, as expected, very significantly below a rudimentary dipole. From my reading on this antenna, which is somewhat similar to the Bilal Isotron, you have an L-C circuit at the end of the coax that gives you a very, very, short dipole. As W9JI and other antenna experts have pointed out, a 2 foot antenna, now matter how many feet of wire it uses, will exhibit the characteristics of a 2 foot antenna. Most antenna designs that reduce a dipole length by more the 2/3 start to exhibit some losses. By the time they are 50% shortened, it becomes substantial. Even shorter antennas that appear to be resonant are likely going to be radiating some from the coax which can give you a sort of vertical or maybe low "L" design. The effective radiated power could be quite low, say, 10 watts or so (-10 dB) which mostly proves that QRP can work. It would be informative to compare a short vertical, which is very easy to install at say half size 16 feet or so high with a decent radial system (assuming ground mounting) compared with a similar height tak-tenna. Based on the height some are putting the tak-tenna, it seems that a simple vertical or even a dipole would be a much better solution. An inverted vee half size 40 meter dipole would fit in a linear distance of around 25 feet, would it not? Or use an end fed 33 foot wire fed against ground? 73, Rick, KV9U David wrote: > I own a Tak-Tenna. I selected it because I have almost no space on my lot > for a dipole. First, it is easy to build. Second, don't try this antenna > without an antenna analyzer. I have the 40 meter version and it works. > During the worldwide SSB contest I was able to talk to Finland, New Zealand, > and Austrialia, but was it the antenna or that these guys had 65 foot and > higher towers with beam antennas? Based on my contacts I think this antenna > does well when the other guy has a beam on a high tower. By the way, there > is enough public domain materials on various versions of this antenna around > that you could build your own pretty easily. > > >
[digitalradio] Remote control
Years ago, I used to have a very light and small SW receiver (but of rather low quality) that I had next to my bed and I could listen to SW or ham communications. Today my equipment is much heavier and bigger and the lightest I could come up with is to "borrow" one of my wife's ICOM IC-7000 rigs. Is there a simple way to interface one of my ICOM rigs (756 Pro II and III or 746 Pro) in such a way to at least tune the rig and listen to audio using my home wireless router system? Of course it would be cool to do more, such as talk on a mike or send digital data, but the main thing would be to at least control the volume and tuning and hear the audio. 73, Rick, KV9U
[digitalradio] New release: WSPR v1.12
-- Forwarded message -- From: Joe Taylor Date: Mon, Apr 27, 2009 at 7:52 PM Subject: [wsjtgroup] New release: WSPR v1.12 To: wsjtgr...@yahoogroups.com, WSJT Devel A problem was discovered in WSPR v1.11. I believe it has been corrected in v1.12 (r1177). If you downloaded v1.11 earlier today, you should upgrade to v1.12. See the earlier announcement below. -- 73, Joe, K1JT Joe Taylor wrote: > Version 1.11 of WSPR is now available. > > To download the installation package for Windows, go to the WSJT Home Page, > http://physics.princeton.edu/pulsar/K1JT/index.html . > Click on WSPR, then click on WSPR_1.11. > > This is a minor maintenance release. It gives WSPR several new features > requested by users: > > 1. Live readout of Rx noise level in status bar. > 2. Annoying popup messages when editing frequency settings > have been fixed. > 3. Frequency settings for band "Other" are now saved and > restored on program restart. > 4. Basic operating instructions in Help screen are updated. > > Users of WSPR under Linux, FreeBSD, Mac OS X, and other unix-like > operating systems may download and compile the source code for r1169 to > generate WSPR 1.11. > > As always, please send me your comments and suggestions. > > -- 73, Joe, K1JT >
[digitalradio] Re: TAK-Tenna
I own a Tak-Tenna. I selected it because I have almost no space on my lot for a dipole. First, it is easy to build. Second, don't try this antenna without an antenna analyzer. I have the 40 meter version and it works. During the worldwide SSB contest I was able to talk to Finland, New Zealand, and Austrialia, but was it the antenna or that these guys had 65 foot and higher towers with beam antennas? Based on my contacts I think this antenna does well when the other guy has a beam on a high tower. By the way, there is enough public domain materials on various versions of this antenna around that you could build your own pretty easily.
[digitalradio] Re: HRD 5.0
Simon, That would be excellent. It would fit right in on the Tools menu. The way you and the team have integrated so many useful things into the Tools menu like the virtual serial port, server service, etc. along with setup automation makes it extraordinarily easy to accomplish some rather sophisticated configurations. If it loaded as a service so much the better. In the short term just a simple pipe like IPSound will do since VAC solves routing problems that some may have. IPSound is not the most stable thing in the universe and has serious latency problems at 48KHz so an alternative would be a good thing and if integrated as part of the HRD remote operation capability a very good thing. In the far future one thing to consider for VOX keyed interface users (e.g. Signalink) in a remote configuration is that the output of the remote interface needs to go to both DM780 and Microsoft Sound Mapper preferably with separately adjustable levels while the output of DM780 needs to go right back to the remote interface input. Otherwise if the output of DM780 goes to the Mapper first and Mapper output is copied to the remote inteface the interface output feeds back to the interface input and Bad Things Happen. Willing beta tester right here ;-) Thanks, K*B*l*0*0*Q --- In digitalradio@yahoogroups.com, "Simon \(HB9DRV\)" wrote: > > OK, > > One thing I want to write while on holiday (!) is a simple soundcard > server - this way DM780 (and other programs) can select the soundcard used > on the remote server, adjust volume levels and get the data. > > It'll be a TCP stream, no compression, nothing. Myself I use 16 bit > resolution so when I sample at 8 kHz the data will be 16 KB/s which is not a > big load on a network. There will also be some header info so the actual > rate will be a little more than 16 KB/s. > > In fact I'll allow you to use whatever sample rate you want, myself I stick > with 8 kHz at the moment. > > I'll probably make the source available - it'll be a Windows app. > > Simon Brown, HB9DRV > www.ham-radio-deluxe.com > > - Original Message - > From: "aa777888athotmaildotcom" > > > > I am very much looking forward to this release. I tend to push the > > software to the limit in many ways and try hard not to whine when I push > > it over its limit! > > >
RE: [digitalradio] Digital Modes, 2 rigs, 2 bands, one sound card/PC
Don't see why it wouldn't work, Andy. FDMDV uses 2 sound cards for transmit/receive. Could probably even control transmit/receive PTT with separate com ports. Sounds like the bad old days of HF Packet, with several QSOs going on at the same time on one frequency! 73 Dave KB3MOW -Original Message- From: digitalradio@yahoogroups.com [mailto:digitalra...@yahoogroups.com]on Behalf Of Andrew O'Brien Sent: Monday, April 27, 2009 5:07 PM To: digitalradio@yahoogroups.com Subject: [digitalradio] Digital Modes, 2 rigs, 2 bands, one sound card/PC Maybe it is the sudden heat that is getting to me Has anyone tried to copy digital modes using two different rigs set to two different bands, with the audio from both going to ONE soundcard and PC? I may give it a shot and see how confusing OR helpful this would be.
[digitalradio] Digital Modes, 2 rigs, 2 bands, one sound card/PC
Maybe it is the sudden heat that is getting to me Has anyone tried to copy digital modes using two different rigs set to two different bands, with the audio from both going to ONE soundcard and PC? I may give it a shot and see how confusing OR helpful this would be.
Re: [digitalradio] HRD 5.0
Hah, I did say 'off the top of my head' :-) Yes - FSK. Once I get HRD 5.0 general beta out I'll be active on 30m as well as 20m, once I start using DM780 more I'll be able to improve it. I've given up the day job and now work 100% on HRD and the future SDR software, so have time to think properly about things like FSK etc. Simon Brown, HB9DRV www.ham-radio-deluxe.com - Original Message - From: Laurie, VK3AMA To: digitalradio@yahoogroups.com Sent: Monday, April 27, 2009 4:53 PM Subject: Re: [digitalradio] HRD 5.0 Still no RTTY FSK then? Is that ever going to be an option? de Laurie, VK3AMA Simon (HB9DRV) wrote: Hi, Off the top of my head: 1) Smoother UI - less cluttered, 2) Soundcard calibration - not yet implemented for all modes but will be in the first public beta, this really is needed for wider modes such as MT63 and 2k Olivia. 3) Improved waterfall with a zoom feature, I find that I need this for tuning in some modes... 4) Seamless operation of the whole HRD 5.0 suite on an Intel Atom 1.6GHz - already running very nicely with my ASUS EEE PC 1000H. 5) Remote soundcard support using TCP. 6) And part of HRD 5.0 is a new and *much* better logbook. 7) as and when I get time more SSTV and better SSTV weak signal synchronisation. 8) Dual (Triple ?) waterfall / soundcard support. Public betas at the end of June, already available for the HRD test team. I'm on schedule and bopping along nicely. And then late in 2009 - DM780 integration with my own SDR console. Simon Brown, HB9DRV www.ham-radio-deluxe.com - Original Message - From: "aa777888athotmaildotcom" > So what do we have to look forward to in the HRD 5.0 version of DM780? Announce your digital presence via our Interactive Sked Pages at http://www.obriensweb.com/sked Recommended digital mode software: Winwarbler, FLDIGI, DM780, or Multipsk Logging Software: DXKeeper or Ham Radio Deluxe. Yahoo! Groups Links
Re: [digitalradio] Re: HRD 5.0
OK, One thing I want to write while on holiday (!) is a simple soundcard server - this way DM780 (and other programs) can select the soundcard used on the remote server, adjust volume levels and get the data. It'll be a TCP stream, no compression, nothing. Myself I use 16 bit resolution so when I sample at 8 kHz the data will be 16 KB/s which is not a big load on a network. There will also be some header info so the actual rate will be a little more than 16 KB/s. In fact I'll allow you to use whatever sample rate you want, myself I stick with 8 kHz at the moment. I'll probably make the source available - it'll be a Windows app. Simon Brown, HB9DRV www.ham-radio-deluxe.com - Original Message - From: "aa777888athotmaildotcom" > > I am very much looking forward to this release. I tend to push the > software to the limit in many ways and try hard not to whine when I push > it over its limit! >
[digitalradio] Re: HRD 5.0
Simon, Thank you very much for taking the time to respond. The ham radio developer community is an amazingly accessible group of people. I am very much looking forward to this release. I tend to push the software to the limit in many ways and try hard not to whine when I push it over its limit! Thanks again, K*B*l*0*0*Q P.S. FWIW this is my setup: IC7000/Signalink USB/Rigtalk attached to a 1GHZ tower running HRD server and IPSound. On the laptop I actually operate from IPSound to Virtual Audio Cable to fldigi (soon to be DM780 v5, I'm certain :-) and HRD. I've got fldigi hooked into HRD via the 3rd party serial port and virtual serial cable functions. VAC was invaluable for breaking the audio feedback loop that causes the VOX operated Signalink from keying although I could have disabled that and just used CAT PTT. Mostly Olivia, PSK, MFSK16 and, if I find the occasional intrepid soul, MT63. --- In digitalradio@yahoogroups.com, "Simon \(HB9DRV\)" wrote: > > Hi, > > Off the top of my head: > > 1) Smoother UI - less cluttered, > 2) Soundcard calibration - not yet implemented for all modes but will be in > the first public beta, this really is needed for wider modes such as MT63 > and 2k Olivia. > 3) Improved waterfall with a zoom feature, I find that I need this for > tuning in some modes... > 4) Seamless operation of the whole HRD 5.0 suite on an Intel Atom 1.6GHz - > already running very nicely with my ASUS EEE PC 1000H. > 5) Remote soundcard support using TCP. > 6) And part of HRD 5.0 is a new and *much* better logbook. > 7) as and when I get time more SSTV and better SSTV weak signal > synchronisation. > 8) Dual (Triple ?) waterfall / soundcard support. > > Public betas at the end of June, already available for the HRD test team. > I'm on schedule and bopping along nicely. > > And then late in 2009 - DM780 integration with my own SDR console. > > Simon Brown, HB9DRV > www.ham-radio-deluxe.com > > - Original Message - > From: "aa777888athotmaildotcom" > > > > So what do we have to look forward to in the HRD 5.0 version of DM780? >
Re: [digitalradio] HRD 5.0
Still no RTTY FSK then? Is that ever going to be an option? de Laurie, VK3AMA Simon (HB9DRV) wrote: Hi, Off the top of my head: 1) Smoother UI - less cluttered, 2) Soundcard calibration - not yet implemented for all modes but will be in the first public beta, this really is needed for wider modes such as MT63 and 2k Olivia. 3) Improved waterfall with a zoom feature, I find that I need this for tuning in some modes... 4) Seamless operation of the whole HRD 5.0 suite on an Intel Atom 1.6GHz - already running very nicely with my ASUS EEE PC 1000H. 5) Remote soundcard support using TCP. 6) And part of HRD 5.0 is a new and *much* better logbook. 7) as and when I get time more SSTV and better SSTV weak signal synchronisation. 8) Dual (Triple ?) waterfall / soundcard support. Public betas at the end of June, already available for the HRD test team. I'm on schedule and bopping along nicely. And then late in 2009 - DM780 integration with my own SDR console. Simon Brown, HB9DRV www.ham-radio-deluxe.com - Original Message - From: "aa777888athotmaildotcom" > So what do we have to look forward to in the HRD 5.0 version of DM780? Announce your digital presence via our Interactive Sked Pages at http://www.obriensweb.com/sked Recommended digital mode software: Winwarbler, FLDIGI, DM780, or Multipsk Logging Software: DXKeeper or Ham Radio Deluxe. Yahoo! Groups Links
Re: [digitalradio] HRD 5.0
Hi, Off the top of my head: 1) Smoother UI - less cluttered, 2) Soundcard calibration - not yet implemented for all modes but will be in the first public beta, this really is needed for wider modes such as MT63 and 2k Olivia. 3) Improved waterfall with a zoom feature, I find that I need this for tuning in some modes... 4) Seamless operation of the whole HRD 5.0 suite on an Intel Atom 1.6GHz - already running very nicely with my ASUS EEE PC 1000H. 5) Remote soundcard support using TCP. 6) And part of HRD 5.0 is a new and *much* better logbook. 7) as and when I get time more SSTV and better SSTV weak signal synchronisation. 8) Dual (Triple ?) waterfall / soundcard support. Public betas at the end of June, already available for the HRD test team. I'm on schedule and bopping along nicely. And then late in 2009 - DM780 integration with my own SDR console. Simon Brown, HB9DRV www.ham-radio-deluxe.com - Original Message - From: "aa777888athotmaildotcom" > > So what do we have to look forward to in the HRD 5.0 version of DM780?
[digitalradio] HRD 5.0
This is obviously meant for Simon (Hi Simon!): So what do we have to look forward to in the HRD 5.0 version of DM780? RX and TX sound card calibration for all modes, I hope! This is the major missing element that drives me to fldigi as my setup requires a calibration in order to be successful on such modes as MFSK and MT63. I have also come to like the waterfall in fldigi better (smoother looking and with zoom) but that is a small point. If a calibration feature gave me the performance I need in DM780 I'd go back to it in a heartbeat. I miss the eQSL and HRD integration terribly. Thanks, K*B*l*0*0*Q
[digitalradio] Re: take a look at Google's mail page
--- In digitalradio@yahoogroups.com, "Giedrius, LY2CG" wrote: > > Samuel F.B. Morse was born on April 27, 1791 in Charlestown, > Massachusetts... > > > > Guess who's Birthday it is today ? ? > > Gied - LY2CG > http://groups.google.com/group/uk500khz/browse_thread/thread/7cceeb22a1b50b4e# And it still works !
RE: [digitalradio] take a look at Google's mail page
Samuel F.B. Morse was born on April 27, 1791 in Charlestown, Massachusetts... > > Guess who's Birthday it is today ? ? Gied - LY2CG
Re: [digitalradio] take a look at Google's mail page
whose? Simon Brown, HB9DRV www.ham-radio-deluxe.com - Original Message - From: ""John Becker, WØJAB"" > That should read "main Page" > >>Guess who's Birthday it is today ? ?
Re: [digitalradio] take a look at Google's mail page
That should read "main Page" At 08:28 AM 4/27/2009, you wrote: >Guess who's Birthday it is today ? ?
Re: [digitalradio] take a look at Google's mail page
Sheena Easton http://www.sheenaeaston.com/ Simon Brown, HB9DRV www.ham-radio-deluxe.com - Original Message - From: ""John Becker, WØJAB"" > Guess who's Birthday it is today ? ?
[digitalradio] take a look at Google's mail page
Guess who's Birthday it is today ? ?
