Re: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms
Seems you were right about that, someone had already measured: http://artax.karlin.mff.cuni.cz/~zajio1am/texts2/eee901.html Its the Eee 901 being measured there and thats the one I am using. Power consumption seems very low (too low even?). He claims the consumption is in the range of 5.6 to 8.5 Watts. Should be excellent in an emergency then. 73 de Per, sm0rwo From: Simon HB9DRV To: digitalradio@yahoogroups.com Sent: Fri, January 15, 2010 9:29:08 PM Subject: RE: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms I could measure it - but I'm sure it's < 20 watts. Simon Brown http://sdr-radio. com From:digitalradio@ yahoogroups. com [mailto:digitalradi o...@yahoogroups. com] On Behalf Of Per Indeed, that was one of the reasons I listed when getting an eee. The PSU is 12 volts and 3 amps (36 watts), dont know how much less than that it actually uses.
RE: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms
When I'm using solar cells? Simon Brown http://sdr-radio.com > -Original Message- > From: digitalradio@yahoogroups.com > > Don't forget the apparent power (kVA) that needs to be supplied to a > transformer. > > DAve (G0DJA) >
Re: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms
Simon HB9DRV wrote: > I could measure it - but I'm sure it's < 20 watts. > > > > Simon Brown > > http://sdr-radio.com > > > > From: digitalradio@yahoogroups.com [mailto:digitalra...@yahoogroups.com] On > Behalf Of Per > > > > Indeed, that was one of the reasons I listed when getting an eee. > > The PSU is 12 volts and 3 amps (36 watts), dont know how much less than that > it actually uses. Don't forget the apparent power (kVA) that needs to be supplied to a transformer. DAve (G0DJA)
RE: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms
I could measure it - but I'm sure it's < 20 watts. Simon Brown http://sdr-radio.com From: digitalradio@yahoogroups.com [mailto:digitalra...@yahoogroups.com] On Behalf Of Per Indeed, that was one of the reasons I listed when getting an eee. The PSU is 12 volts and 3 amps (36 watts), dont know how much less than that it actually uses.
Re: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms
Indeed, that was one of the reasons I listed when getting an eee. The PSU is 12 volts and 3 amps (36 watts), dont know how much less than that it actually uses. /Per From: Simon HB9DRV To: digitalradio@yahoogroups.com Sent: Fri, January 15, 2010 7:18:20 PM Subject: RE: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms A very nice feature of the ASUS EEE PC is that it runs off 12 volts. So solar calls + 12v 7AH battery and it'll run all day. Simon Brown http://sdr-radio. com > -Original Message- > From: digitalradio@ yahoogroups. com > [mailto:digitalradio@ yahoogroups. com] On Behalf Of sholtofish > > When I use the FT-817 from solar/gel cell charging the notebook as well > proves too much and drains the cell too quickly hence the reason for > the WP-2. >
RE: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms
A very nice feature of the ASUS EEE PC is that it runs off 12 volts. So solar calls + 12v 7AH battery and it'll run all day. Simon Brown http://sdr-radio.com > -Original Message- > From: digitalradio@yahoogroups.com > [mailto:digitalra...@yahoogroups.com] On Behalf Of sholtofish > > When I use the FT-817 from solar/gel cell charging the notebook as well > proves too much and drains the cell too quickly hence the reason for > the WP-2. >
Re: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms
That's a nice wee setup you have there, I'd forgot about these little net books. Again as you say it's the sort of thing you could have in a disaster area or expedition, even a 703 or 706 with gel cells in a small flight case with perhaps even solar panels on the outside to trickle charge the battery. MM0TOB ---Original Message--- From: Per Date: 15/01/2010 13:32:15 To: digitalradio@yahoogroups.com Subject: Re: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms Interesting subject, here is my portable setup: http://twitpic.com/y37fm Its an eee 901 pc, an FT-817ND and a soundcard interface. I have a much smaller interface but I dont have a picture showing that. With this setup I can work: - PSKmail using jpskmail (PSK500 robust really flies) and - fldigi, lots of modes there - xastir for packet radio through - soundmodem, uses the soundcard and creates a virtual kiss tnc (or ax25 ip) Of course that kiss interface can be used for other things besides aprs (fbb perhaps). With the smaller interface its basically a netbook and an FT-817ND (or 897 if I have power enough). A TNC can be nice but its also nice not to have to bring it, power supply, cables etc.. 73 de Per, sm0rwo From: aa777888athotmaildotcom To: digitalradio@yahoogroups.com Sent: Fri, January 15, 2010 1:01:19 PM Subject: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms This sounds fairly complex. Why not just use a netbook? Volume-wise it's about the same if not better after all the cables and "terminals" are considered and if you have enough power to run digital (high duty cycle) on the radio you have enough for the netbook. --- In digitalradio@ yahoogroups. com, "sholtofish" wrote: > > > There is the NUE-PSK device which now supports RTTY in addition to PSK31. You still need a keyboard however. > > In my opinion a better device is the Kantronics KAM XL or SCS PTC II. > > The Kantronics is much cheaper than the SCS and offers some features even the Pactor-II/III modems don't. > > A used KAM XL is a good investment because it is flash upgradable via a free download on Kantronics website - no messing with expensive ROMs. > > It offers (via a terminal) PSK-31, RTTY, ASCII, Pactor-1, AMTOR & G-TOR in addition to it being a dual port Packet switch (up to 9K6). > > It's perfectly possible to run a "TheNet" compatible node at the same time as a multiuser BBS with 480KB of non volatile storage. It is basically a BBS/Node in a box that only consumes about 120mA at 12v. > > You can also link the ports to provide VHF<>HF switching. It also has a RTC chip so you don't have to remember to set the date every time you boot up which is important for message handling. > > If you couple this with a cheap serial terminal - perhaps the Tandy WP-2 wordprocessor" which provides an 80 column lcd display and can happily run on a couple of AA cells for days (available on eBay for peanuts) then you have a real low power system which is very usable. > > You could run a traffic BBS on VHF and a Pactor-1 (or better yet G-Tor) link on HF. > > The PSK31 takes a little getting used to if you normally use a waterfall but it is a very sensitive implementation and works very well. > > I believe the SCS modems have a multiuser BBS too and of course Pactor-II and Pactor-III if you can afford it but that is the real catch, these things run around $1000 or more even second hand. > > You can often find a KAM XL for around $250-$350 on eBay. A radio cable from Buxcomm is about $25. > > 73 > > Sholto > K7TMG > <>
Re: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms
Interesting subject, here is my portable setup: http://twitpic.com/y37fm Its an eee 901 pc, an FT-817ND and a soundcard interface. I have a much smaller interface but I dont have a picture showing that. With this setup I can work: - PSKmail using jpskmail (PSK500 robust really flies) and - fldigi, lots of modes there - xastir for packet radio through - soundmodem, uses the soundcard and creates a virtual kiss tnc (or ax25 ip) Of course that kiss interface can be used for other things besides aprs (fbb perhaps). With the smaller interface its basically a netbook and an FT-817ND (or 897 if I have power enough). A TNC can be nice but its also nice not to have to bring it, power supply, cables etc.. 73 de Per, sm0rwo From: aa777888athotmaildotcom To: digitalradio@yahoogroups.com Sent: Fri, January 15, 2010 1:01:19 PM Subject: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms This sounds fairly complex. Why not just use a netbook? Volume-wise it's about the same if not better after all the cables and "terminals" are considered and if you have enough power to run digital (high duty cycle) on the radio you have enough for the netbook. --- In digitalradio@ yahoogroups. com, "sholtofish" wrote: > > > There is the NUE-PSK device which now supports RTTY in addition to PSK31. You > still need a keyboard however. > > In my opinion a better device is the Kantronics KAM XL or SCS PTC II. > > The Kantronics is much cheaper than the SCS and offers some features even the > Pactor-II/III modems don't. > > A used KAM XL is a good investment because it is flash upgradable via a free > download on Kantronics website - no messing with expensive ROMs. > > It offers (via a terminal) PSK-31, RTTY, ASCII, Pactor-1, AMTOR & G-TOR in > addition to it being a dual port Packet switch (up to 9K6). > > It's perfectly possible to run a "TheNet" compatible node at the same time as > a multiuser BBS with 480KB of non volatile storage. It is basically a > BBS/Node in a box that only consumes about 120mA at 12v. > > You can also link the ports to provide VHF<>HF switching. It also has a RTC > chip so you don't have to remember to set the date every time you boot up > which is important for message handling. > > If you couple this with a cheap serial terminal - perhaps the Tandy WP-2 > "wordprocessor" which provides an 80 column lcd display and can happily run > on a couple of AA cells for days (available on eBay for peanuts) then you > have a real low power system which is very usable. > > You could run a traffic BBS on VHF and a Pactor-1 (or better yet G-Tor) link > on HF. > > The PSK31 takes a little getting used to if you normally use a waterfall but > it is a very sensitive implementation and works very well. > > I believe the SCS modems have a multiuser BBS too and of course Pactor-II and > Pactor-III if you can afford it but that is the real catch, these things run > around $1000 or more even second hand. > > You can often find a KAM XL for around $250-$350 on eBay. A radio cable from > Buxcomm is about $25. > > 73 > > Sholto > K7TMG >
Re: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms
True but their eggs are not in one basket. Also, DHS is in a better position to use ALE compared to an ad hock arrangement. How much ALE traffic has passed from Haiti? I know SSB is up but to an extremely limited extent. expeditionradio wrote: > --- In digitalradio@yahoogroups.com, w2xj wrote: > >> I truly believe it will be back to the >> very basics. DHS seems to feel the same way based on the >> money being spent on deployable HF SSB systems. >> > > Hi W2XJ, > > All the DHS radios have ALE. > > Bonnie KQ6XA > > >
Re: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms
The problem is that if there are not enough of these radios (if built) deployed world wide, the chance of one being in an impoverished country and usable are quite small. At the end of the day in a dire emergency CW, possibly AM and SSB are the only dependable modes. In places where Hams are likely to be equipped for more sophisticated modes, there is other infrastructure such as cell phones, uplinks, hardened fiber, etc that are all more accessible to the masses. A disaster that would take out all that infrastructure would in all likelihood leave Hams with minimal capabilities as well. I truly believe it will be back to the very basics. DHS seems to feel the same way based on the money being spent on deployable HF SSB systems. Toby Burnett wrote: > Just a though, I am with you on the portable radio psk/rtty built in, that > would be fantastic. Say a little FT-817 or the 897 etc with a fold out > qwerty keyboard and display. Surely it wouldn't be hard to implement. I > think there are now software out for psk on a PDA which is about as compact > as you are going to get. > > > > ---Original Message--- > > > > From: expeditionradio > > Date: 14/01/2010 14:48:45 > > To: digitalradio@yahoogroups.com > > Subject: [digitalradio] portable HF digital in the radio Re: Haiti a test > for emcomms > > > > > > > > > > >> Russell Blair (NC5O) wrote: >> > > >> ALE and Winmor and software for a PC, and power >> > > >> to run all this. but the phone nets maybe slow >> > > >> but all you need is a radio. >> > > > > Hi Russell, > > > > ALE does not need a computer for sending email or > > calling other stations. There are many radios with > > built in ALE. They were expensive, but the price has > > recently come way down on some of them. > > > > It just works, it is part of the radio's function, > > and you are not at the mercy of your flimsy laptop > > connections, or limited weight and bulk when traveling > > to a disaster zone. The limitations of small airplanes, > > helicopters, or boats could force you to decide > > whether you will bring water/food or a laptop and > > the other radio stuff. > > > > It is sad that not many ham radio companies have produced > > portable HF radios with built in PSK31 or RTTY keypad > > interfaces. Such a simple thing to do, but they "just > > don't get it". > > > > Only a few VHF/UHF HTs even have APRS built in. Such a shame. > > > > 73 Bonnie KQ6XA > > > > > > > > >
Re: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms
Just a though, I am with you on the portable radio psk/rtty built in, that would be fantastic. Say a little FT-817 or the 897 etc with a fold out qwerty keyboard and display. Surely it wouldn't be hard to implement. I think there are now software out for psk on a PDA which is about as compact as you are going to get. ---Original Message--- From: expeditionradio Date: 14/01/2010 14:48:45 To: digitalradio@yahoogroups.com Subject: [digitalradio] portable HF digital in the radio Re: Haiti a test for emcomms > Russell Blair (NC5O) wrote: > ALE and Winmor and software for a PC, and power > to run all this. but the phone nets maybe slow > but all you need is a radio. Hi Russell, ALE does not need a computer for sending email or calling other stations. There are many radios with built in ALE. They were expensive, but the price has recently come way down on some of them. It just works, it is part of the radio's function, and you are not at the mercy of your flimsy laptop connections, or limited weight and bulk when traveling to a disaster zone. The limitations of small airplanes, helicopters, or boats could force you to decide whether you will bring water/food or a laptop and the other radio stuff. It is sad that not many ham radio companies have produced portable HF radios with built in PSK31 or RTTY keypad interfaces. Such a simple thing to do, but they "just don't get it". Only a few VHF/UHF HTs even have APRS built in. Such a shame. 73 Bonnie KQ6XA <>
