[digitalradio] Re: Odd noise in receiver
Hi Dave, I have a similar type noise in our neighborhood. By doing some DF'ing, we've pinned it down to a neighbor's house, but haven't been successful yet in gaining their confidence to let us explore beyond their front door. Can here it on VHF when we're at their front porch. Is it time synced, i.e. is the accuracy such that it's being derived from a 60Hz/Xtal time base. In my case, it's not. It comes on for APPROX 12 seconds and goes off for APPROX 3 seconds, but if I listen to it over a few minutes, it will drift up or down. Also, I noticed I can hear it at ~ 16.7KHz offsets, which makes me think it could be PC video related. Not sure if it could be switching power supply related, I thought most of them were 100's Khz. Actually, It had been across the full 20M band last year when we were DF'ing, but now it's discrete. I have a wav file I can send you if that would help. Fortunately, it's been down to S2-3 as of late. It also seems to be tied to colder weather (thermostat control??). BTW, the neighbor is 300-400 feet away in a suburban area (70' x 120' lots) . W5AHC is another ham in the neighborhood and he's ~100 fett closer and hears it as well. Hope this helps. Let me know what it ends up being. tnx es 73 Bruce - W3NJ --- In digitalradio@yahoogroups.com, Dave 'Doc' Corio [EMAIL PROTECTED] wrote: Wonder if anyone has encountered this type of noise. It's a raspy, pulsating sound. It lasts 10 seconds, is silent for 5, then starts again The pulses are about 5 per second. It's showing up on a lot of bands. Right now I have it at about 21.048, but have heard it on several ham frequencies. We haven't added any new electronics in the house at all. We are in a rural setting, with the nearest neighbor several hundred feet away. We do have cable TV and cable internet, and I wonder if this might be a test birdie I've heard mentioned in the past. It seems to run 24/7, and just started up within the last few days. Any ideas? Thanks in advance 73 Dave KB3MOW
[digitalradio] Yahoo radiointerference group - Re: Odd noise in receiver
FYI, although email traffic has been low, there is the Yahoo group radiointerference where various audio/screen captures can be found. Would be good to upload any info on the signature you have for others to comment. I'll be posting my files there. If anyone has inputs, their appreciated! tnx Bruce --- In digitalradio@yahoogroups.com, Dave 'Doc' Corio [EMAIL PROTECTED] wrote: Wonder if anyone has encountered this type of noise. It's a raspy, pulsating sound. It lasts 10 seconds, is silent for 5, then starts again The pulses are about 5 per second. It's showing up on a lot of bands. Right now I have it at about 21.048, but have heard it on several ham frequencies. We haven't added any new electronics in the house at all. We are in a rural setting, with the nearest neighbor several hundred feet away. We do have cable TV and cable internet, and I wonder if this might be a test birdie I've heard mentioned in the past. It seems to run 24/7, and just started up within the last few days. Any ideas? Thanks in advance 73 Dave KB3MOW
[digitalradio] Re: Digital high frame rate video via amateur radio
FYI, here's another data point. We are passing 1280 x 720 @ 30 fps over a 1Mbps line using H.264 compression. As the new standards evolve, maybe this will help on the VERY low bandwidths available to us on ham radio. If we use CIF or QCIF resolutions, the bandwidth requirements can be dropped even further. Still have a bit to go to get to 6Kbps though :-) www.lifesize.com Bruce - W3NJ --- In digitalradio@yahoogroups.com, cesco12342000 [EMAIL PROTECTED] wrote: oops .. those numbers are wrong. I did mix up kbyte and kbit. The video may be limited to less than 1 frame / sec.
[digitalradio] Re: HF to Cell Phone Texting - SMS
Hi Bonnie, I've gone through the link below and unfortunately, haven't seen any details on how to send SMS messages. Is there a step-by-step link I'm missing? tnx es 73 Bruce- W3NJ --- In digitalradio@yahoogroups.com, expeditionradio [EMAIL PROTECTED] wrote: Cell Phone texting, also known as SMS, can provide 24/7 access for emergency/disaster relief purposes. It enables immediate alerting and messaging with personnel. For more information that includes an example of how SMS via HF is being used for Emcomm, please see the presentation ALE for Emergency / Disaster Relief Communications on the web at: http://www.hflink.com/garec/ When cell sites are congested during disasters or communications emergencies, SMS texting may still function in some cases, even when voice service is down. This situation was experienced in some parts of the Katrina disaster zone. More and more, disaster response organisations are using SMS and short text email to meet their needs. Hams involved with Emcomm should work to support this also. Hams can send/receive SMS text messages on HF without a computer. For more information about how to do this, see the website: http://hflink.com/hfn 73 Bonnie VR2/KQ6XA
[digitalradio] Re: More digital modes than you can shake a stick at
Great list Andy Here's a few that didn't make their list (unless there are different names for them): AMTOR Clover MT63 MFSK16 All the PSK variants (63, 125etc) - Guess it's best to say PSKnnn :-) PactorIII BTW, when was the last time anyone had a QSL on DTMF??? :-) --- In digitalradio@yahoogroups.com, Andrew J. O'Brien [EMAIL PROTECTED] wrote: I stole this list from the HOKA web site. Gee, I thought I knew quite a few digital modes. Looks like I've got a LOT of learning to do. FSK, MFSK, PSK VFT multi-channels 81-81 ACARS ANNEX 10 SELCALL APOC ARQ 6 70 / 90 / 98 ARQ 625 - Sitor A ARQ E - ARQ N ARQ E3 ARQ S ARQ SWE ARQ TDM 242 ARQ TDM 342 ASCII ATIS AUTOSPEC BAUDOT BAUDOT F7B CIS 14 COQUELET 13 COQUELET 8 COQUELET 8 FEC Crowd 36 CW/MORSE DTMF DPA DUP ARQ - ARTRAC ERMES FAX FEC 625 Sitor B Navtex FEC A FEC S Flex / RE-Flex FMS BOS GMDSS G-TOR HC ARQ HDFL HF-ACARS HELLSCHREIBER HNG FEC MERLIN 720 - RS ARQ II Merod / RAC ARQ MIL 141 - 188 ALE MIL 188-110 Seriale MIL 188-110 39 Toni PACKET PACTOR PACTOR II PICCOLO MK VI 6 toni PICCOLO MK IV 12 toni POCSAG POL ARQ PSK 31 ROU FEC RS ARQ RS ARQ II SID Sitor B SSTV SKYFAX Time DCF 77 TOR G 10/11 TWINPLEX VWD 4 + 4 6028 - Barrie MIL-STD - 188-110 CN2 MIL-STD -188-203 1A MOI PICCOLO MK VI - VFT R38 - 144 Baud R39 R39 - 75 Baud RAF Fleet Broadcast TT2300 VFT FEC 192 Baud VOCODER - MS5 Tabella riassuntiva Canali/Frequenze Velocità e Shift
[digitalradio] Re: ALE Linking and Texting with Multipsk
Hi Bonnie Great summary! I'm jumping in on ALE (also just starting to get familiar with MARS ALE on the USAF MARS freqs), and had a few questions/confirmations on the summary below (Having a problem getting to the hflink JPG, but will try that later) 1) I had a station return the call, since I heard ALE signals and my aux function window automatically opened upis that normal 2)assuming #1, where does the stations callsign show up? It was weak so it may not have decoded. 3) On the exchange, I assume it's my call (not the other stations on the AMD message: MULTIPSK W3NJ BRUCE 599 true? 4) If I'm just monitoring the freq, should I see other traffic? Is there an equivalent to Pass all like on Packet to see all traffic, even corrupted exchanges? 5) Are the ARQ FAE exchange(s) all done from the Aux window? When, if any time, is the main window used for ALE exchanges? I see a button for ARQ FAE in the main window...what's it's purpose? 73 es keep the info flying, it's appreciated!! Bruce -W3NJ --- In digitalradio@yahoogroups.com, expeditionradio [EMAIL PROTECTED] wrote: ALE Linking and Texting with Multipsk See this set up drawing: http://www.hflink.com/multipsk/MultipskALEoptionsSetup.jpg Set your Multipsk up exactly as the drawing shows. Video ID = Off RS ID Detection =Off First, use the Auxiliary Functions window to add other stations callsigns, as shown in the drawing. Then close the Auxiliary Functions window. If you copy another station, add the other station's callsign each time using the Aux. Functions window. Calling a station In the main control panel: To call a station, bring up the station's callsign in the dropdown box. Then press the red CALL. Calling CQ In the main control panel: To call CQ, bring up HFL in the dropdown box. Then press the red CALL. Wait 45 seconds for all possible responses. ALE text QSO: What is an AMD, and why is is used? In the data/text sub-bands, always start the ALE QSO by sending a short AMD message. AMD (Automatic Message Display) is the only universal text method for all ALE software and hardware radios. Each AMD text exchange consists of a 3-way handshake: 1. sending the text message 2. receiving an ACK from the other station 3. sending an ACK to the ACK How to send AMD text: In the Auxiliary Functions window: Bring up the other station's callsign in the Addressee dropdown box. Type the text of your first AMD Message and press SEND. Your first message of the QSO should be: MULTIPSK CALLSIGN NAME REPORT You will hear your message being sent. If it went through OK, then the other station's ALE should auto-respond with an ACK. Then your station should respond with an ACK-ACK. If you don't hear the ACK, send the AMD again until you receive the ACK. The QSO may continue using AMD or the operator on either end may normally ask to switch to another mode, because AMD is mainly intended for short messages, not conversational texting. Note, first thing you need to tell the other operator is that you are using Multipsk. If the other operator is using Multipsk, then you can switch to FAE ARQ (Multipsk's ARQ format). If the other operator is not using Multipsk, then you may use only AMD for texting, unless the other operator asks for some other mode. When QSO is complete, close the Aux. Functions window, and clear the link using the front panel gui. Bonnie KQ6XA
[digitalradio] Re: WSJT-HFG - Generating HF-version of standard message
Thanks Andy, guess I missed that in the docs Is there a way to change the HF templates (for example, with tough condx, I'd like to change one of the messages to the shorthand equivalent, to make sure it gets through). I didn't see where these are captured in the .ini file. tnx es 73 Bruce -W3NJ --- In digitalradio@yahoogroups.com, Andrew O'Brien [EMAIL PROTECTED] wrote: Just right double-click on a received callsign. On 5/5/07, Bruce Sawtelle [EMAIL PROTECTED] wrote: Hello all, Is there a way to auto-generate the HF-version of the 6 standard messages? I tried making a change in the WSJT.ini file where it shows the templates and it doesn't pick up the changes. example: call call grid OOO becomes call call -nn (sig rpt) Just trying to be lazy, and not type everything in for each QSO!! :-) tnx es 73 Bruce - W3NJ -- Andy K3UK Skype Me : callto://andyobrien73 www.obriensweb.com
[digitalradio] WSJT-HFG - Generating HF-version of standard message
Hello all, Is there a way to auto-generate the HF-version of the 6 standard messages? I tried making a change in the WSJT.ini file where it shows the templates and it doesn't pick up the changes. example: call call grid OOO becomes call call -nn (sig rpt) Just trying to be lazy, and not type everything in for each QSO!! :-) tnx es 73 Bruce - W3NJ
