[digitalradio] K3UK Sked Page Annual Fund Drive
The K3UK Sked pages at http://www.obriensweb.com/sked have had another very successful year. The SKCC and LOTW pages in particular have been very popular with occasions where we have had 100 hams simultaneously connected. We have also had favourable mention in QST and other ham publications. June is the time of year where I pay the annual bill. The site has very heavy usage . The sked pages generate an average of 20 gigs of posts per month. In April for example Total Hits were 2,047,126, Hits per Day averaged 68237 with a maximum of 118208. To maintain this service I pay for a higher than standard server with unlimited data use . In the past, many users have be generous enough to make a small donation towards the annual costs. Please consider making a donation to help the 2010-2011 costs. You can donate via paypal (see http://www.obriensweb.com/donate.html ) or via check to the call book address. Donations of course are completely voluntary and not required to use the service. Andy K3UK
[digitalradio] Re: Digital Band for 6M
Russell most digital operation is around 50.290 mc. I've seen it as low as 50.260 mc and as high as 50.300 mc. 73, Thomas F. Giella, NZ4O lakeland, FL --- In digitalradio@yahoogroups.com, Russell Blair russell_blai...@... wrote: Where does the Digital band start on 6M. ? I just put the beam back up and would like to get back on 6M digital.. Russell NC5O 1- Whoever said nothing is impossible never tried slamming a revolving door! 2- A government big enough to give you everything you want, is strong enough to take everything you have. - Gerald Ford IN GOD WE TRUST Russell Blair (NC5O) Skype-Russell.Blair Hell Field #300 DRCC #55 30m Dig-group #693
[digitalradio] RADCOM review of the Perseus SDR
http://www.woodboxradio.com/download/microtelecom_perseus_sdr.pdf It is a little out of date with respect to software and does not seem to be aware of some of the advanced capabilities that something like Multipsk or SDR-Radio-Console can provide, but it is a good article. Andy K3UK
[digitalradio] QRV 14065-14115 : SDR RS-ID Skimmer
I will be QRV today , simultaneously from 14065 to 14115 using Multipsk with an SDR and RS-ID receive activated. I will thus be able to receive any RS-IDs heard within this range . I will also have Multipsk's Call ID activated. So lets see if I can hear you and log you. I will still be able to log your ID to disk even if not in the shack (I'll be in and out doing various things this Mother's Day). Please make your calls in the USUAL way, no broadcasting. Also please QRL? first to make sure the frequency is not in use. I'm interested in determining how much activity I miss when in non-SDR mode and listening to just the traditional 3-4 Khz range on 20M . So, please use RS ID when you call CQ or respond to a call. It would seem to me that RS-ID and an SDR could be used to form some sought of RS-ID Skimmer that could turn out to be as useful as a CW Skimmer. e.g 13:45:25 UTC BPSK31 14.0710 M 13:44:56 UTC OLIVIA-8-50014.0730 M 13:42:26 UTC OLIVIA-16-500 1302 Hz Andy K3UK
[digitalradio] Universal M-8000--Dinosaur in Today's World?
I have a chance to buy a Universal M-8000 decoder from a friend for $100. Is it worth it, or do todays digital software blow it out of the water? (DM 780, MultiPsk, etc?) I am a SWL who has a NRD-535D hooked into a RF Systems DX-One and a Wellbrook 1530 loop, and I just got started with digital modes. I presently use DM 780, MultiPsk, FLdigi. From looking at the info, it looks like the M-8000 has a lot of modes that are not used anymore according to the spec sheets. I am a new member of this group, and am trying to learn all I can about digital modes. I live in Southern Indiana, and my main interests are Maritime listening and trying to decode digital signals. Thanks for any input you might have. Wayner
Re: [digitalradio] Contestia 250 - new concept for usage
Hi Jaak, Great idea to start a long test of Contestia 250/4! Perhaps Contestia 250/8 can also be compared in actual practice to Contestia 250/4. Contestia 250/8 is slower (at 29 wpm), but decodes 2 dB deeper into the noise, which may be important when there is QSB (fading) and the signal is already near the noise level ( such as when the band is going out). Although I can type over 50 wpm, my personal feeling is that 29 wpm is fast enough for a QSO, but Contestia at 78 wpm (3 dB less sensitive) is more reasonable for passing traffic (if conditions can support 3 dB less sensitivity). If not, then to be able to pass the traffic at all, it has to be sent at a slower, more sensitive speed, such as Contestia 250/4. It all depends upon the average individual preference for typing speed for QSO's vs conditions.This may become clear during your tests. I hope the testers will make their minimum typing speed preferences known, as well as how well the mode works. 73, Skip KH6TY Jaak Hohensee wrote: Hi everybody * Contestia derived from Olivia. * Contestia 250/4 is channelfree like psk or rtty. BW less than rtty and same as psk125, 39wpm, snr -9dB. * So Contestia 250/4 is good narrowband alternative for psk31 or rtty folk, specially when propagtion is not for psk/rtty or signals are too weak. * Contestia 250/4 is good mode for mid- or high-latitude folk. Many times there are disturbed propagation path not suited for psk or rtty. * Concept testing period to the end of year 2010. Everybody is welcome. More info contestia.blogspot.com http://contestia.blogspot.com/ -- vy73, Jaak es1hj
Re: [digitalradio] Universal M-8000--Dinosaur in Today's World?
True, the M-8000 is old. I would suggest that it buying it or not depends on whether you want to play around with it for what it does still do well: SITOR/AMTOR, CW, WEFAX, GMDSS, PACTOR, and ACARS for example. For most of those you can find free decoders that will cover them, but it is still fun to use. If you happen to have interest in Russian stuff, the Cyrillic feature is neat, but I have to confess to not having used that feature in a decade. Used to be great for Russian CW and RTTY! If you do buy it, hopefully it is one of the later versions, like v7.5; that will have more systems --that aren't used anymore. :-) On Sun, May 9, 2010 at 11:06 AM, wayner rueg...@insightbb.com wrote: I have a chance to buy a Universal M-8000 decoder from a friend for $100. Is it worth it, . . . Wayner -- Ed Pusey esp...@gmail.com
