Re: [DSTAR_DIGITAL] DSTAR PARACHUTE MOBILE Sat Sept 5, 2009
Mark, I've operated 2 metre FM parachute mobile. Even with a lightly loaded 240 my mic picked up a lot of wind noise and made it difficult for other stations to understand me. I was using a speaker mic cupped in my hands to try to block the wind but still had some problems. I no longer own any big slow parachutes (I have a 135, a 120, and a 97) so I'm sure it would be a lot worse now. Something to think about if you haven't done this before... It would take some coordination to get the timing right, but if I could get my hands on a DSTAR handheld (my only DSTAR radio at the moment is a 2820), we could make a parachute to parachute DSTAR contact - now *that* would be neat! Blue Skies, Brian CSPA D-661 - oh, and VE7NGR ;-) On Thu, 2009-09-03 at 18:32 +, boeing377 wrote: We will try again this Saturday Sept 5, 2009, likely jump window is between noon and 2:30 PM California time. Will be aloft over Byron CA. Will announce on K6MDD through two meter repeater about 30 minutes prior to liftoff. Will make the world's first DSTAR parachute mobile call to Tim K6BIV to thank him for K6MDD and then work the rest. I am hoping for moderate winds on Saturday. Safety has to come first and if winds are over our limits we will probably have to postpone again. We can take higher winds in a freefall jump but it leaves very little time for comms. If I do a freefall from 13-14K I'll open around 3K and try to get a few QSOs done, but I have to quickly focus on getting back to the DZ, avoiding other canopies and setting up my landing approach. 73, Mark AF6IM
[DSTAR_DIGITAL] Re: DSTAR PARACHUTE MOBILE Sat Sept 5, 2009
Brian and Nate, Wouldn't that be something if we could arrange a jumper-plane-jumper DSTAR QSO? I am up for trying it some weekend soon. We (AF6IM and KF6WRW) have been keeping our toggles stowed until we get to about 3000 ft. Gives us slower descent for more comm time and slower forward speed to cut wind noise. Speaker mic is noisy but very intelligible. In Oct we are going to try HF radio comms on a HAHO exiting at about 2 ft with oxygen. The masks have internal mics. A 97 sq ft canopy? No thanks ;-). I like my Triathlon 190 just fine. Been jumping since 1968 starting with a boatanchor USAF surplus C9 round jet ejection canopy. Man that cheap chute landed hard. It is a miracle I didn't break a leg. Made over a hundred painful landings under that beast until I could afford a very used ParaCommander. I am turning 60 in October. Been a skydiver since 1968 and a ham since April 08. Really love the new hobby and am having a lot of fun combining it with the old one. 73 Mark AF6IM
Re: [DSTAR_DIGITAL] Re: DSTAR PARACHUTE MOBILE Sat Sept 5, 2009
Just so you know, A belgian Ham Radio op was doing HF from a plane somewhere, and his license got revoked and a fine to be payed because its illigal to do ham radio 'in the air' (in belgium). 73s Robbie ON4SAX On Fri, Sep 4, 2009 at 12:11 PM, boeing...@gmail.com wrote: Brian and Nate, Wouldn't that be something if we could arrange a jumper-plane-jumper DSTAR QSO? I am up for trying it some weekend soon. We (AF6IM and KF6WRW) have been keeping our toggles stowed until we get to about 3000 ft. Gives us slower descent for more comm time and slower forward speed to cut wind noise. Speaker mic is noisy but very intelligible. In Oct we are going to try HF radio comms on a HAHO exiting at about 2 ft with oxygen. The masks have internal mics. A 97 sq ft canopy? No thanks ;-). I like my Triathlon 190 just fine. Been jumping since 1968 starting with a boatanchor USAF surplus C9 round jet ejection canopy. Man that cheap chute landed hard. It is a miracle I didn't break a leg. Made over a hundred painful landings under that beast until I could afford a very used ParaCommander. I am turning 60 in October. Been a skydiver since 1968 and a ham since April 08. Really love the new hobby and am having a lot of fun combining it with the old one. 73 Mark AF6IM
Re: [DSTAR_DIGITAL] Re: DSTAR PARACHUTE MOBILE Sat Sept 5, 2009
On Sep 4, 2009, at 4:11 AM, boeing...@gmail.com wrote: Brian and Nate, Wouldn't that be something if we could arrange a jumper-plane-jumper DSTAR QSO? I am up for trying it some weekend soon. That would be interesting! We (AF6IM and KF6WRW) have been keeping our toggles stowed until we get to about 3000 ft. Gives us slower descent for more comm time and slower forward speed to cut wind noise. Speaker mic is noisy but very intelligible. In Oct we are going to try HF radio comms on a HAHO exiting at about 2 ft with oxygen. The masks have internal mics. If you pulled at 3000' MSL here, well... you'd be dead/underground! (Since the airport I launch out of is at 5885'! ;-) ) I am turning 60 in October. Been a skydiver since 1968 and a ham since April 08. Really love the new hobby and am having a lot of fun combining it with the old one. It is fun to mix things up, isn't it? Kinda like making a big bowl of Chex Mix for a party! LOL! -- Nate Duehr n...@natetech.com facebook.com/denverpilot twitter.com/denverpilot
[DSTAR_DIGITAL] Repeater Linking?
How many repeaters can Link to a single D-Star repeater at any one time? Thanks, Bill WB4WTN
RE: [DSTAR_DIGITAL] Repeater Linking?
Hi John, While I appreciate you taking the time and trouble to answer my question, It's WAY too much info for me to digest. What the question probably should have been it this: If I connect to a local D-Star repeater and have WD7STRCL in UR and another station via another D-Star has already linked to WD7STR, will I be able to link? If so, how many repeaters can link? 73, Bill WB4WTN That's not as straight forward of a question as one might think. D-STAR really isn't about linking, in the same way that analog systems are linked -- which has its pluses and minuses.
Re: [DSTAR_DIGITAL] Repeater Linking?
Direct repeater to repeater linking only allow 1 link at a time. If you need more than 1 you need to go through a reflector. 73 de Scott KB2EAR - Original Message - From: Bill Cherepy To: dstar_digital@yahoogroups.com Sent: Friday, September 04, 2009 5:50 PM Subject: RE: [DSTAR_DIGITAL] Repeater Linking? Hi John, While I appreciate you taking the time and trouble to answer my question, It's WAY too much info for me to digest. What the question probably should have been it this: If I connect to a local D-Star repeater and have WD7STRCL in UR and another station via another D-Star has already linked to WD7STR, will I be able to link? If so, how many repeaters can link? 73, Bill WB4WTN That's not as straight forward of a question as one might think. D-STAR really isn't about linking, in the same way that analog systems are linked -- which has its pluses and minuses.
Re: [DSTAR_DIGITAL] Repeater Linking?
If I connect to a local D-Star repeater and have WD7STRCL in UR and another station via another D-Star has already linked to WD7STR, will I be able to link? If so, how many repeaters can link? 73, Bill WB4WTN Only one dplus link can be established to your repeater module(A, B or C). If its linked already ,(and no-one is using the link I would transmit and check first) then you can unlink; urcall = ###U (#=space) and then run the link command you desire. A different link can be established on a different module, but all modules are isolated and do not interact with each other. Hence the reason for a reflector link, to allow more than 2 gateways to intercommunicate. vk4tux
RE: [DSTAR_DIGITAL] Repeater Linking?
At 07:50 AM 9/5/2009, you wrote: Hi John, While I appreciate you taking the time and trouble to answer my question, It's WAY too much info for me to digest. What the question probably should have been it this: If I connect to a local D-Star repeater and have WD7STRCL in UR and another station via another D-Star has already linked to WD7STR, will I be able to link? If so, how many repeaters can link? You're still thinking in terms of linking. With D-STAR, you really have to go back to first base and start all over again. D-STAR also has multiple modes of passing traffic between stations, which can be broadly divided into 2 categories, namely Traditional/G2 based and DPlus additions. The traditional and G2 modes are what John described in his reply to you. These do not use links of such, they are one way routes that you configure into your radio. The party at the other end has to configure a reciprocal route back to you, for you to be able to communicate. Fortunately, the Icom radios have a 1 touch reply function which makes this easy to achieve. I'll ignore the non networked cases for now, and look at traditional routing options. 1. Callsign routing. This is used to route to a user who could be anywhere on the D-STAR network. You don't need to know where they are, and the D-STAR network will route to them. For example, to call you, I could do this... MY = VK3JED UR = WB4WTN R1 = VK3RWN C R2 = VK3RWN G R1 is my local RF port, R2 is my local gateway. UR is where I am routing to, in this case, your callsign Bill. If D-STAR knows about you and has heard you on, the call will be routed to where you were last heard on air. This is a _very_ useful feature of callsign routing. 2. Port routing. Similar to callsign routing, except you're specifying the RF port that you will be coming out on, rather than the destination callsign. For example, if I wanted to route to W1ABC port B, I would use... MY = VK3JED UR = /W1ABC B R1 = VK3RWN C R2 = VK3RWN G Note the slash at the start of the UR entry. The port designator always occupies the 8th character position. Due to the nature of the above callsign routing, it's not easy to have more than routing to one place at the same time, so bandwidth so far is minimal. 3. Multicast. This broadcasts your call to the list of gateways setup by your local gateway admin for that multicast group. To use a multicast group, first, the gateway admins involved must configure it beforehand. Once that is done, simple MY = VK3JED UR = /OURNET R1 = VK3RWN C R2 = VK3RWN G Of these, multicast is the one that takes the bandwidth at the gateway, since it has to send a copy of each local user's transmission to all other group member gateways. There is a hard limit of 10 gateways in a multicast group, so the Internet connection needs to be able to handle 9x DV streams (plus DV from any other ports and any DD traffic) at the same time. Next, we move onto the DPlus enhancements. These are NOT part of a standard G2 D-STAR setup, but are provided by the DPlus addon by Robin, AA4RC, which most gateways on the K5TIT network run today. DPlus has its own way of working, and here we can talk about links in a manner similar to IRLP and Echolink. When a DPlus link is established, all traffic (all that has the gateway in the G2 field anyway) is sent to the copy of DPlus running on the remote end. No need to have callsign routing configured (actually, you shouldn't, that can screw up the system when a DPlus link is active). I won't go into the details of how to setup and tear down DPlus links, but the limits on how many can connect would depend on bandwidth at the gateway, just as is the case for Echolink. Like Echolink and IRLP, large nets can be held using DPlus, thanks to the presence of reflectors, which are simply conference servers on high bandwidth pipes. As you can see, the question has many answers. :) 73 de VK3JED / VK3IRL http://vkradio.com
RE: [DSTAR_DIGITAL] Repeater Linking?
I am truly sorry I ever asked that question. Please consider it withdrawn. Bill WB4WTN
Re: [DSTAR_DIGITAL] Repeater Linking?
- Original Message - From: Tony Langdon vk3...@gmail.com To: dstar_digital@yahoogroups.com Individual Email | Traditional Hi Tony Thanks for that, it realy helped to understand D-Star. Ian
Re: [DSTAR_DIGITAL] Repeater Linking?
Bill Cherepy wrote: : If I connect to a local D-Star repeater and have WD7STRCL in UR and another station via another D-Star has already linked to WD7STR, will I be able to link? No , You will hear¨System is currently busy¨ If so, how many repeaters can link? Non applicable because not so. keeping it simple vk4tux
Re: [DSTAR_DIGITAL] Repeater Linking?
At 10:04 AM 9/5/2009, you wrote: - Original Message - From: Tony Langdon vk3...@gmail.com To: dstar_digital@yahoogroups.com Individual Email | Traditional Hi Tony Thanks for that, it realy helped to understand D-Star. No probs. One of the reasons D-STAR seems so complicated, is because there's actually two systems. The factory D-STAR/G2 routing scheme (the original system) is one, and the DPlus enhancements are the other. Both do different things, behave differently, and sometimes interact in weird (and undesirable) ways. 73 de VK3JED / VK3IRL http://vkradio.com
