Re: [digitalradio] Re: Digital OPS: QRP Battery Portable
Andy, Nice laptop - wish I had one of those! The mini Acer runs ok with DM780 and Multipsk, but the eyes do get a tired of looking at the tiny fonts. The battery lasts a long time though so that's a plus. Speaking of batteries, I can usually get 2 hours of air time out of the FT-897D and it's twin 4500 mAh batteries. The setup works well, but I'm sure there are cheaper / better ways to get the most bang for the buck. The PY1AHD Alexloop continues to amaze me; working Europeans QRP with a hand-held loop that's only 3 feet in diameter is something only a ham would appreciate. It turned out to be a pretty good multi-band alternative to portable dipoles and verticals. I recorded a short video of the first CW DX contacts with the loop back in August 2009. It was right before a contest so the big guns were out in force. See -- http://www21.zippyshare.com/v/83698345/file.html I'll record some digital mode videos this weekend; the weather is supposed to be nice so I should get some backyard portable air time. Tony -K2MO On 4/30/2010 5:35 AM, obrienaj wrote: Interesting Tony. I just got my ham software installed on my company laptop (takes the IT folks a while). I have Multipsk, Fldigi, HRD/DM780, Microkeyer device router, SpectraVue and SDR-Radio Console all working nicely . It's a fairly big laptop rather than a mini-netbook, 17 inch screen (wide screen too) . So, I really do need to do as you suggest, get a station that can use the laptop for QRP operations via battery rather than AC or generator power. I need to get a rig to do this though, will have to start looking around for bargains. By the way, the Centrino Duo 1.8 CPU, in the laptop handles Multipsk in SDR Direct mode with RS ID, handles the demand well just 20% CPU use. Andy K3UK --- In digitalradio@yahoogroups.com mailto:digitalradio%40yahoogroups.com, Tony d...@... wrote:
Re: [digitalradio] Re: Digital OPS: QRP Battery Portable
Nice video Tony, amazing little antenna! On Sat, May 1, 2010 at 2:18 AM, Tony d...@optonline.net wrote: A The PY1AHD Alexloop continues to amaze me; working Europeans QRP with a hand-held loop that's only 3 feet in diameter is something only a ham would appreciate. It turned out to be a pretty good multi-band alternative to portable dipoles and verticals. I recorded a short video of the first CW DX contacts with the loop back in August 2009. It was right before a contest so the big guns were out in force. See -- http://www21.zippyshare.com/v/83698345/file.html I'll record some digital mode videos this weekend; the weather is supposed to be nice so I should get some backyard portable air time. Tony -K2MO
[digitalradio] FIRST QSO ON 500KHz USING ROS 30 April
FIRST QSO ON 500KHz USING ROS 30 April First qso on 500 KHz using ros , G0NBD and G4WGT , initially using 500/16 and then eme , reducing tx power , the level that the eme mode started to fail was in technical terms `just silly' reducing the tx to 3 watts carrier power then via a 20 dB attenuator down to 30 mW to a 35 ft top loaded Ae that needs round 50/75 watts to produce 100 mW erp , ie approx 500 : 1 reduction .. reception 30 miles away by a similar Ae , then produced 100 % copy , depending on local noise level Later in the evening , M0BMU called G0NBD at 500/8 , a range of 200 miles , then follower at 100% qso over some 30 mins ending round 0010 local time , one final tx at 500/16 was also 100% decode , even in deep QSO , to the point of no audio from the speaker, the mode remained in lock and kept printing , each station running 100 watts. Outstanding mode Jose ! 73 G ..
Re: [digitalradio] FIRST QSO ON 500KHz USING ROS 30 April
Pity it is a proprietary software . I can't use it in Norway. 73 de LA5VNA Steinar On 01.05.2010 15:32, graham787 wrote: FIRST QSO ON 500KHz USING ROS 30 April First qso on 500 KHz using ros , G0NBD and G4WGT , initially using 500/16 and then eme , reducing tx power , the level that the eme mode started to fail was in technical terms `just silly' reducing the tx to 3 watts carrier power then via a 20 dB attenuator down to 30 mW to a 35 ft top loaded Ae that needs round 50/75 watts to produce 100 mW erp , ie approx 500 : 1 reduction …….. reception 30 miles away by a similar Ae , then produced 100 % copy , depending on local noise level … Later in the evening , M0BMU called G0NBD at 500/8 , a range of 200 miles , then follower at 100% qso over some 30 mins ending round 0010 local time , one final tx at 500/16 was also 100% decode , even in deep QSO , to the point of no audio from the speaker, the mode remained in lock and kept printing , each station running 100 watts. Outstanding mode Jose ! 73 – G .. http://www.obriensweb.com/digispotter.html Chat, Skeds, and spots all in one (resize to suit)Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/digitalradio/join (Yahoo! ID required) * To change settings via email: digitalradio-dig...@yahoogroups.com digitalradio-fullfeatu...@yahoogroups.com * To unsubscribe from this group, send an email to: digitalradio-unsubscr...@yahoogroups.com * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[digitalradio] Re: FIRST QSO ON 500KHz USING ROS 30 April
Hi Steinar, If you check at the moment G4WGT is sending a beacon using the EME mode centered on 503.6 K , in the test last night it was very hard to stop it printing ! , thanks for your reports in the past , 73 - Graham --- In digitalradio@yahoogroups.com, Steinar Aanesland saa...@... wrote: Pity it is a proprietary software . I can't use it in Norway. 73 de LA5VNA Steinar On 01.05.2010 15:32, graham787 wrote: FIRST QSO ON 500KHz USING ROS 30 April First qso on 500 KHz using ros , G0NBD and G4WGT , initially using 500/16 and then eme , reducing tx power , the level that the eme mode started to fail was in technical terms `just silly' reducing the tx to 3 watts carrier power then via a 20 dB attenuator down to 30 mW to a 35 ft top loaded Ae that needs round 50/75 watts to produce 100 mW erp , ie approx 500 : 1 reduction .. reception 30 miles away by a similar Ae , then produced 100 % copy , depending on local noise level Later in the evening , M0BMU called G0NBD at 500/8 , a range of 200 miles , then follower at 100% qso over some 30 mins ending round 0010 local time , one final tx at 500/16 was also 100% decode , even in deep QSO , to the point of no audio from the speaker, the mode remained in lock and kept printing , each station running 100 watts. Outstanding mode Jose ! 73 G ..
[digitalradio] Q How do stns use the WEB-SDR 's and data prog's ??
Q How do stns use the WEB-SDR 's and data prog's ?? This might be a silly question ,, but what is the best way to use the web-srd radio's with a data programe ? Im sure in the past I selected the windows sound card in the data prog and it worked .. but audio was very low .. now , thinking about it , after a change of MB ..this method no longer works Short of a ausio patch cable .. is there a software bridge ? Tnx - G ..
[digitalradio] Re: 3rd Generation Digital radio
Of course, I have a different perspective coming from the UK where amateur radio isn't regarded as primarily an emergency communications service. :) Julian, G4ILO Just wait till the military run short of radio operators .. for :) read :( .. that was why morse was part of the licence and is not any mode ... G .. --- In digitalradio@yahoogroups.com, g4ilo jul...@... wrote: I agree with you. I don't see any merit in doing on the amateur bands what can be done on commercial frequencies. Indeed, I don't really see that even D-Star enhances the hobby in any way. Being able to call someone whereever they are by keying their call into your radio is not what ham radio is about, in my view. I already have a radio that can reach people wherever they are. It's called a cellphone. I'm afraid that technology is starting to take the magic out of radio. RF is being reduced to a means of connecting someone to a network that guarantees reliable communication. That isn't what attracted me into this hobby 40 years ago. Of course, I have a different perspective coming from the UK where amateur radio isn't regarded as primarily an emergency communications service. :) Julian, G4ILO --- In digitalradio@yahoogroups.com, af6it af6it@ wrote: A perhaps narrow outsider's opinion: There is potential here for both good and for wreaking havoc with fellow users of VHF/UHF amateur bands given a paradigm shift into a G3 digital era. Improving upon packet's abilities could be a very good thing- particularly for those involved in EmComm. But running analog FM users away just because commercial gov't users have had the change to digital crammed down their throat would be a very bad idea. If it can peacefully co-exist with current users- then no problem! As a potential user I confess that I'm not terribly interested in digital modes up here. Adding more specialized equipment has no appeal nor any advantage to my operating style. HF digital is much more exciting useful to me. (YMMV) My greatest fear is that someone in an urban upper 5% utilization zone might find a listening ear in the FCC who would recklessly force a draconian change to make us all go 100% digital VHF above- even for the 95% who have no trouble finding available analog freq's. This is ham radio after all- not hard core government EmComm! (Which is I suppose STILL waiting to see how beneficial the move will prove to be for them) One other comment: Tactical ham frequencies??!!! What in the world??? For ham SWAT teams? LOL Didn't Indianapolis PD get into trouble for less than that? :-) 73 de Stu AF6IT
Re: [digitalradio] Re: Digital OPS: QRP Battery Portable
On 5/1/2010 6:19 AM, Andy obrien wrote: Nice video Tony, amazing little antenna! Thanks Andy... I was wondering if you had a particular portable rig in mind? I could be wrong, but it seems there are only 3 battery powered HF rigs on the market today; the Icom 703, Yaesu 817 and the Yaesu FT-897. All of them have low current drain for longer battery life. The Icom 703 for example, uses 300ma in standby mode while the 706 uses 1.8 amps. The 703 uses 450ma with the audio set on maximum while the 706 uses 2.0 amps. I guess it doesn't matter much if the rig requires higher current as long as the external battery pack has enough reserve to give you a few hours of air time. The low current rigs will always get more air time with the same pack though so it's something to consider. Tony -K2MO On Sat, May 1, 2010 at 2:18 AM, Tony d...@optonline.net mailto:d...@optonline.net wrote: A The PY1AHD Alexloop continues to amaze me; working Europeans QRP with a hand-held loop that's only 3 feet in diameter is something only a ham would appreciate. It turned out to be a pretty good multi-band alternative to portable dipoles and verticals. I recorded a short video of the first CW DX contacts with the loop back in August 2009. It was right before a contest so the big guns were out in force. See -- http://www21.zippyshare.com/v/83698345/file.html http://www21.zippyshare.com/v/83698345/file.html I'll record some digital mode videos this weekend; the weather is supposed to be nice so I should get some backyard portable air time. Tony -K2MO __ Information from ESET NOD32 Antivirus, version of virus signature database 5076 (20100430) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com
[digitalradio] Portable QRP OPS TONIGHT
All, I'll be running QRP portable from the backyard this evening after 2100z (May 1st). Please look for me on 14070 / 10140 / PSK31 mode. Thanks, Tony -K2MO
[digitalradio] Hamvention D-STAR Activities
D-STAR at Dayton Hamvention During the Hamvention several D-STAR events resources will be available. D-STAR Digital Voice repeaters in Dayton are sponsored by DARA (Dayton Amateur Radio Association), the host of the Hamvention. Dayton D-STAR Repeaters 145.270 (+600 KHz) W8BI C Accessible outdoors at Hamvention® HARA Arena with a handheld at 0.5 watts may be marginal so higher power is recommended. 444.0875 (+ 5MHz) W8BI B 70 cm repeater has limited range. Dayton D-STAR Repeater Reflector Linking Hamvention received approval from the D-STAR Reflector REF030B to link a W8BI D-STAR over the Hamvention® weekend. The repeater was linked last year as well using a different reflector. A reflector allows all repeaters DV Dongles linked to it communicate as a group. D-STAR activity in Dayton over Hamvention® weekend can be followed by using a repeater or DV Dongle linked to the 30-B reflector instead of linking directly to the W8BI gateway. Hamvention D-STAR Repeaters At the Hamvention Icom has D-STAR digital voice 2m, 70cm 23cm digital voice repeaters radios on demonstration and the repeaters may be connected to the D-STAR network. The callsigns frequencies of the demonstration repeaters will be available at the Hamvention. Thursday Night D-STAR Meet, Greet and Eyeball QSO On Thursday night prior to the Hamvention there is a D-STAR Meet, Greet and Eyeball QSO over dinner. It will occur on Thursday May 13th from 7 p.m. – 9 p.m at Marion 's Piaza on 1320 N Fairfield Road in Beavercreek , OH . More information about the event at: http://hamvention.org/events.php#dstar D-STAR Friday Night Get Together For the last four years there has been a Friday Night D-STAR Get Together at a hotel in Dayton hosted by the Texas Alabama D-STAR groups. The event has been an opportunity to hear talks by experienced D-STAR repeater operators innovators and meet with other D-STAR users. This year the Friday Night D-STAR Get Together will be on Friday, May 14th from 8 – 10 pm at the Drury Inn North, the same location as last year. The Georgia D-STAR group will host this year's event. The format this year will be a bit different from previous years with a few short presentations to start the evening followed by an open session with D-STAR experts on many topics stationed around the room to meet and answer your questions. D-STAR Forum, Room #1, Friday, 12:45 – 14:15 pmHosted by Greg Sarratt, W4OZK Speakers DVAP/DV Dongle/D-PLUS/Multiple Software Packages, Robin Cutshaw, AA4RC Home-brew D-STAR repeater, David Lake, G4ULF D-RATS, D-STAR Digital Data Software, Dan Smith, KK7DS
[digitalradio] QRP Portable Log
All, Conditions were pretty good this evening. Managed to work some DX with the HF portable setup. Time to recharge the batteries. G0UIQ14MHZ PSK31 ON4VDV14MHZ PSK31 OK1KM 14MHZ PSK31 Tony -K2MO
