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dsd+
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Mar 23, 2014 13:57
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| # ? May 12, 2024 21:55 |
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are you using a SDR dongle or an actual scanner? Are you getting a lot of errors?
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Mar 23, 2014 14:28
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sdr dongle, and yes lots of errors. also it looks like they routinely use two freqs
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Mar 23, 2014 14:39
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i bought 2 dongles so if i need to set up unitrunker or something i guess i can do that
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Mar 23, 2014 14:39
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Do you get any voice at all? Or is it always garbled? Are you using the crappy antenna that came with the dongle? In my limited experience decoding DMR the success is really dependent on the signal strength. Another thing to try is forcing dsd+ to decode DMR using the DMR switch. (-fr) If that doesn't work, your department could be using inverted DMR. DSD+ is supposed to auto detect inversion but it doesn't work well from what people say. So try forcing that too. (either -xr or -xR) If the command line switches don't work try getting a better signal strength by relocating your antenna or getting a better one.
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Mar 23, 2014 14:55
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it's always garbled. my wife said she heard 'ok' come out of my computer once when i wasn't in the room. ya, stock antenna. guess it's time to get/make something better. it seems like when i force it to invert it there are more errors but i can try that again PuTTY riot fucked around with this message at 15:21 on Mar 23, 2014 |
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Mar 23, 2014 15:19
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if you get more errors then it's probably not inverted, especially if your wife heard it normally once. just leave the default settings. yeah those stock antennas are garbage if you have any spare coax and some wire laying around you can just make a dipole for UHF or VHF with the spare wire. you can even use TV cable (75 ohm) for the feedline. no need to use rg-8 for just receiving. just cut the wire pieces to length using the normal formula and solder one to the center conductor and the other to the shield like you would an HF dipole. use some electrical tape to insulate the center from the shield etc. tape the dipole up in a window vertically and it will probably be a huge improvement over the stock antenna you'll just need to adapt the F connector to the cable that goes to the dongle if you use TV coax. radio shack or ebay will have F adapters
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Mar 23, 2014 15:27
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does seeing privacy enabled in dmrdecoder fly by mean they're using encryption? google says yes, so does my gut instinct about this PD... PuTTY riot fucked around with this message at 15:51 on Mar 23, 2014 |
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Mar 23, 2014 15:48
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yep. that's probably the issue then does it always fly by or just sometimes? IIRC it can be switched on and off by the radio's user
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Mar 23, 2014 15:50
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Dijkstra posted:yep. that's probably the issue then sometimes, i'm seeing that in dmrdecoder which seems to handle it a little better. dmrdecoder posted:CACH : TACT AT=1 Ch 2 Last fragment of LC e: this is inverted enabled
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Mar 23, 2014 15:56
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looks like they have encryption turned on for both those channels, at least for the time being. sucks rear end is that your local PD?
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Mar 23, 2014 16:03
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Yeah it's local PD. Local FD is still analog, as is campus PD and local SD. They are all supposed to go to MSWIN p25 phase 2 soon, local FD is going to trbo first though?? maybe if i get some time later ill see if theres any MSWIN stuff i can pick up. and maybe search around for a soldering iron and F adapter
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Mar 23, 2014 16:07
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yeah its a disappointment when you find out they're crypting, its a really nice asset to have cop monitoring, but ya play with the hand you're dealt I'm waiting for it to warm up a few more degrees and then we're going to try to get this Windom up in the tree a little higher. i want to play 40 and 20 meters today
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Mar 23, 2014 16:13
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from the amsat list - dudes are still pushing the satellites as hard as they can -quote:FO-29 Extreme DX Contact
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Mar 23, 2014 16:21
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Goddamn I'm on that list but I never look at the mail that comes in on it didn't two guys just work from Cuba to Britain on FO-29? I hope someone can get a HEO bird in the air again before too long. hearing old sat guys tell all the stories about all the DX they worked on those old russian birds is great
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Mar 23, 2014 16:30
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15 and 12 meters are HOT right now and i just heard ik2ycw (italy) on 10 meters beautiful day to hang out in the carport and make the radios squawk. i got the windom up a little higher and its got bang on SWR on 40/20, only gets down to like 2:1 on 10 but i dont mind tuning that out, i dont run high power. might throw out my call a bit and see who i can pull in
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Mar 23, 2014 18:18
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yah i worked Guernsey and Kazakhstan on 10m this morning barefoot the CBers are also booming in from everywhere this morning channel 11 is hoppin
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Mar 23, 2014 18:25
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what kind of soldering iron should i get? something >100w, right?
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Mar 23, 2014 18:28
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60-80W, weller or hakko, temperature regulation matters more than power
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Mar 23, 2014 18:34
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it's so cool to spin through the bands and watch them go up and down sun's setting, 40 meters is hot, just worked W1AW/4 out of tennessee, like 10 watts on my end worked W1AW/5 out of new mexico on 15 meters too i need to figure out a WARC antenna bad 17 and 12 are awesome chill bands i've decided that we need to get you set up on 40 meters jello, if we both have low dipoles we can use NVIS during the afternoon and i bet make contact save yer pennies boy
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Mar 24, 2014 01:01
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Jonny 290 posted:it's so cool to spin through the bands and watch them go up and down i'm down. i've got power out by the pool not to far from some trees so i could not spend so much on coax. i'll figure something out. wife will let me spend a little on a real radio once we get settled. for now my time is being spent trying to decide if we want to bamboo floor the entire house or leave lovely floors in and just replace carpet and dumb poo poo like that so i'm sure when that day comes we'll have plenty to chat about.
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Mar 24, 2014 01:22
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get a metcal
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Mar 24, 2014 01:34
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I found a pair of old "FM/VHF/UHF" LNAs that have F connectors and plug into the wall. One of them has a gain dial and an "FM trap" switch which I'm assuming toggles an 88-108mhz bandpass filter. How likey are these to do anything of note if I hook them up to my upcoming RTLSDR dongle?
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Mar 24, 2014 05:07
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Bloody posted:get a metcal Wisdom
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Mar 24, 2014 11:58
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!quote:Two Geostationary Ham Radio Transponders wow. Basically you save money on tracking hardware that you have to spend on link budget. But preamps and amps are easier to deal with than rotators.
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Mar 24, 2014 14:16
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Oh and here's a DLL that lets you use a RTLSDR in direct sampling mode through 20 meters. http://www.rtl-sdr.com/direct-sampling-mode-hardware-modifcations/ e: and so I don't spam too much, looks like W1AW moved to New Mexico, Tennessee and Guam this weekend, and I got the first two 
Jonny 290 fucked around with this message at 14:23 on Mar 24, 2014 |
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Mar 24, 2014 14:18
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Jonny 290 posted:e: and so I don't spam too much, looks like W1AW moved to New Mexico, Tennessee and Guam this weekend, and I got the first two great now youre gonna get letters constantly begging you to support them
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Mar 24, 2014 14:28
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some guy sent me a letter w/ a bunch of ARRL stuff should i join? also are qtari sats gonna reach north america i wonder? either way mega cool
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Mar 24, 2014 15:32
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eh, i dunno on the arrl. theyve always been traditionalists, but they are our lobbyists to preserve spectrum, too. lately it is rumored that they are in the pocket of wideband digital vendors and that's the push to reform the HF digital regs, but i dunno for sure. if anybody wants to ramble on the arrl feel free on the sats, yeah it all depends on what orbital slot they get. neat fact: geosynchronous satellite positions are HOTLY contested over. you only have a certain number of slots in the geosynchronous orbit, you can't pack the satellites in too densely or they interfere with each other. they'd be mad if they didn't cover at least north america and europe
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Mar 24, 2014 15:49
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Mar 24, 2014 15:51
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probably a cheap slot bein over middle of africa and all
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Mar 24, 2014 15:53
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Yeah I was gonna post that map looks like you will have to go to Brasil to use this thing oh well, it's a start re: ARRL, they are good for preserving spectrum even if they are trying to turn ham radio into an emcomm whacker "look at my super $8,000 go-kit I will never use" cult also I dunno about this stuff about changing the digital rules. i've been in an number of CW qsos only to have some asswipe's winlink poo poo fire up on top of it. afaik most of the automated digital stuff is supposed to check to see if the frequency is being used before it starts but seems like everyone just disables that feature if they started using more bandwidth and creeping further down into the CW bands I might go all grumpy greybeard and start ranting about the ARRL like that smelly old guy at your club meeting
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Mar 24, 2014 16:00
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fired up a cw trainer this morning. oh god im so rusty im going to do an hour or two a day till i can plug in a fkn paddle and gogogogo
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Mar 24, 2014 16:40
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ordered some LT product samples for microwave mixers, integrated PLLs and IQ modulators, hoping to set up a block schematic for a 23cm FM transmitter tomorrow then later i can build a receiver with similar parts, and integrate the design into a 23cm transceiver with a DV-RPTR for 23cm d-star and run my own repeater
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Mar 24, 2014 19:16
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what's the superbowl? i'm having a lot of trouble googling it this owns tho https://www.youtube.com/watch?v=kRTab_MZJ_A
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Mar 24, 2014 19:21
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channel six is the super bowl. that's where you go with your twelve "pill" (transistor) amp and try to talk over everybody eles im tuned into the utwente.nl SDR today, just parking it on 40 meter CW and trying to find the slower speed ops. It's a really good challenge even just trying to copy CQ calls as there are ninety countries (and prefixes) you can hear over there. i really have a burning urge to get into cw now because it means simple transmitters lol longview you're so fuckin far past me, here i am lookin at 2n2222a 40m cw kits
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Mar 24, 2014 19:26
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oh yeah and bad fists are driving me CRAZY. put away the straight key if you can't control it for fucks sake
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Mar 24, 2014 19:28
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Jonny 290 posted:channel six is the super bowl. that's where you go with your twelve "pill" (transistor) amp and try to talk over everybody eles i have literally 0 idea what any of this means 
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Mar 24, 2014 19:31
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a guy at work (former RF engineer) commented that most of ham radio these days is basically guys buying cellphones and saying "hi, can you hear me?" "yeah" "sweet, bye", and that real hams used to build all their own equipment and he's kind of right, at least for parts of the hobby, so i decided to start doing more hard core tech stuff since i already have access to the hardware and brainware to do it (despite being slightly biased against hams he's also extremely helpful) of course the problem with turning ham radio into an RF-engineer only type of hobby is that it would die out completely, so i like the idea of getting more casual users in on it too, despite my personal interest being largely about the technology
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Mar 24, 2014 19:36
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| # ? May 12, 2024 21:55 |
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longview posted:a guy at work (former RF engineer) commented that most of ham radio these days is basically guys buying cellphones and saying "hi, can you hear me?" "yeah" "sweet, bye", and that real hams used to build all their own equipment no you're right, the number of times that i've heard dudes on the local repeaters "go down to the six meters" because they have that GEE FIVE ARR VEE with the AUTOTUNER IN THEIR YAY-ZOO and it'll tune up on six! these dudes are the guys that run on 146.500. not 146.49. not 146.505. 146.500. drives me insane
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Mar 24, 2014 19:57
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