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also i need to just wait and look @ uls in a couple of days lol
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Mar 5, 2014 16:55
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PuTTY riot posted:so im lookin @ that thing and wonderin why its got a USB and not a PoE NIC instead. idk. seems pretty cool tho It's basically a dev board. If you don't have it on your bench hooked up to all sort of crazy poo poo, you're not using it right, haha PuTTY riot posted:also i need to just wait and look @ uls in a couple of days lol heh ive been stalking u on there too
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Mar 5, 2014 17:02
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Jonny 290 posted:Woop! The 751A is a solid solid radio with excellent performance and one loving ginormous caveat. i have the 271a, the 2 meter all mode version, and it suffers from the same problem
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Mar 5, 2014 17:06
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Jonny 290 posted:heh ive been stalking u on there too lol
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Mar 5, 2014 17:41
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Just ordered an MCX to SO-239 adapter so we can hook up a real antenna  (yes if I work with uhf/microwave I will order an SMA adapter but for now this will work with what I have available)
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Mar 5, 2014 17:49
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lol if you're not rolling all N and SMA with semi rigid coax loving everywhere and RG-316 (proest coax) for flexible jumpers just lol
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Mar 5, 2014 20:09
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longview posted:lol if you're not rolling all N and SMA with semi rigid coax loving everywhere and RG-316 (proest coax) for flexible jumpers this unironically
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Mar 5, 2014 20:23
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yeah well i got bills 2 pay i literally dug up a 70 foot RG-8 run because i need the coax and cant spend a lot of bucks
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Mar 5, 2014 20:39
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never had a problem with eBay coax and SMA/N, RS and Farnell charge ridiculous amounts for coax RG-316 is the best ham radio coax because most old timers have no idea what it actually is (hint: it's a teflon version of RG-174)
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Mar 5, 2014 21:03
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yeah if I build up an SDR with the config I want (switchable bandpass/notch filters, upconverter) i want to do it all with sma and 316. guess i should learn2crimp? ugh am i going to have to spend $120 for some industrial crimping tool gently caress gently caress gently caress
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Mar 5, 2014 21:55
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can i build a wideband omnidirectional receive antenna by sorta taking a log-periodic and rotating it through a circle through space it would end looking like a cone made of solid rings, or maybe just rings of vertical elements something like these except not horizontally connected 
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Mar 5, 2014 22:05
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probably not, the connected rings would likely turn into loops and gently caress everything up what you want is a discone now that i have an sdr, we will be building a discone oh also that reminded me to take pics of that lindenblad antenna i made. I took it off the mast last night and brought it in to thaw, then forgot
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Mar 5, 2014 22:12
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atomicthumbs posted:can i build a wideband omnidirectional receive antenna by sorta taking a log-periodic and rotating it through a circle through space rip that one guy
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Mar 5, 2014 22:18
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Hey Johnny did you build a Lindy with parasitic elements or driven? I'm working on a parasitic one for 430 sat stuff.
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Mar 5, 2014 22:36
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Dijkstra posted:Hey Johnny did you build a Lindy with parasitic elements or driven? I'm working on a parasitic one for 430 sat stuff. parasitic. It's bugging me because it should have a flatter SWR curve, it's great at 437, great at 445, but bumps up to 2:1 at about 442. but I'm not sure if I have insufficient RF choke on the feedline, or I have weird elements or something. It matches the dimensions +/- a mm or two tops (vs my MMANA model, not the PDF article it originated from), so it's buggin me i'll post pics in a couple hrs
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Mar 5, 2014 23:00
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I have read/heard that moving the feedline slightly away from the bottom driven element and the re-fastening it can help the swr. I think people put some kind of non-conductive spacer in (like a small flat piece of wood or something) and that got it to play better sometimes. Or maybe another ferrite around the coax.
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Mar 6, 2014 01:32
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yeah, see, I was a cheeky rear end in a top hat, and I'm running the coax inside of the bottom element (1/2" copper water pipe for the dipole, 1/4" alum rod for the directors), so I kind of get what I deserve. Still, I don't want to run the coax outside if I can figure out the angle. I know it can be done somehow e: it really is all square up, that's just weirdo camera lens. still i havent really set the angles properly, need to get the ruler and level out
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Mar 6, 2014 01:48
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Yeah I know people have done it that way but I can't remember if there is a trick to it or not.
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Mar 6, 2014 02:22
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so like...i get that the letter the VE guy sent to the FCC office in Memphis (i guess?) is probably just getting there today if he mailed it Tuesday AM. I don't really care though, gimme my goddamn callsign u fucks.
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Mar 6, 2014 17:06
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yeah, it's still a paper system. windows 3.11 machines have trouble connecting to the internet =/
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Mar 6, 2014 17:10
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where do they even mail it to? i said memphis cause i thought i heard that somewhere but im looking around and dont see any FCC offices there idk
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Mar 6, 2014 17:11
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Jonny 290 posted:yeah, it's still a paper system. windows 3.11 machines have trouble connecting to the internet =/ why not just do psk31 or smth then lol
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Mar 6, 2014 17:12
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jonny do u know a lot about p25 phase 2? ive been reading about it a lil and i guess MS is trying to be 100% p25 phase 2 and all the state agencies & plenty of others area already on it. it actually sounds rly fukken sw8 and i kinda wanna get a scanner but it seems like the best one to buy right now is 'wait 6 months and see what happens'
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Mar 6, 2014 20:42
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correct. I don't think Uniden has a Phase 2 capable scanner out yet (this was a big disappointment when the new ones came out in Jan). And if you are buying a non-Uniden scanner, well, just don't do that. DSD might be the best answer for a little bit sadly
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Mar 6, 2014 20:44
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thats pretty lame. it seems like the tech is badass and will be around for a long time tho. im a lil confused on how they do backhaul tho, like how does a guy @ the north part of the state talk to the marine resources guys in gulfport harbor? fiber or some other backhaul freq?
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Mar 6, 2014 20:46
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yeah they run wireline or other circuits between all the sites. AWIN (arkansas's phase1 system) has all sorts of simulcast and cross-connects, and I hear police chases on there from south arkansas as long as ive got the talkgroup unlocked
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Mar 6, 2014 20:47
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The two new Uniden scanners are phase II capable, but lots of people are having problems with them because they aren't decoding some agencies right. Uniden is working on fixing the firmware but it's kind of crapshoot right now whether you local P25 agencies can be heard with the new uniden scanners. See my latest post in the ham radio thread for a summary of the clusterfuck On the big P25 system in VA backhaul is done via microwave relay or Canopy (Motorola proprietary), but they may have some fiber links too, not sure.
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Mar 6, 2014 20:56
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Dijkstra posted:See my latest post in the ham radio thread for a summary of the clusterfuck this is the ham radio thread 
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Mar 6, 2014 20:57
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yeah you're right sorry
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Mar 6, 2014 20:59
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Dijkstra posted:yeah you're right sorry that was a big post yeah wow not gonna get involved w/ that for a while. maybe whistler or whoever will surprise a lot of ppl?
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Mar 6, 2014 22:16
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If you can find a GRE PSR-800 for sale, it will decode P25 Phase II if it has the latest firmware. (and it can decode the early Moto X2 TDMA systems too) People were pretty happy with them before GRE went bankrupt. i see them on the ham swap sites for $400 or so. now that uniden has kind of screwed up the release of their new scanners (so far) a lot of people who are agnostic about scanner manufacturers (read: not uniden fanboys) are waiting to see what whistler does i'm waiting for a scanner that will decode P25 Phase II along with NXDN, TRBO etc. before i buy another one
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Mar 6, 2014 22:26
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yeah local PD is TRBO but i read something saying they'd eventually move to MSWIN like everyone else. FEMA or DoD or someone gave the state $100 million to put this system in after katrina so i hope they actually make it work. i know down on the coast its been everyone on p25 for a while now, i think theres even interop between states.
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Mar 6, 2014 22:29
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TRBO is blowing the gently caress up and is the #1 contender for podunk departments that blew all their DHS cash and now need a cheap digital system (it's positioned way downmarket from P25 and LTE). it's the top want on the scanner features list for me right now.
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Mar 6, 2014 22:36
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can trbo be part or p25 or is it a totally separate system? like when local PD goes to mswin do they all get new radios and tear down the old repeater? p25 provisioning is super cool too btw
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Mar 6, 2014 22:38
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here's a p lol motorola promo video w/ our shithead gov https://www.youtube.com/watch?v=mLO1O0rKod4
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Mar 6, 2014 22:40
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TRBO is blowing up but lots of local PDs/Sheriffs thet jumped in early are realizing they got conned into TRBO systems by shady mom & pop 2-way companies in the past several years and now most of them hate them because they don't work well if coverage is spotty. There is some kind of capacity plus option for TRBO to help with this but most places couldn't afford it and wish they had their old analog system back. TRBO is separate from P25 and they aren't interoperable without a lot of special interfacing on both ends and lots of $$$ AFAIK So some counties (at least in VA) are trying to come up with the bridge money needed to get P25 systems so they can hook into the state and adjoining counties. They have to literally buy a TRBO radio for each trooper that covers part of their county so they can talk to them directly. If the TRBO system doesn't work well there they have to use phones all of the departments that blew their DHS money on stupid poo poo like armored personnel carriers for their SWAT teams to deploy to 3am barking dog calls probably wish they had some of it back Dijkstra fucked around with this message at 22:51 on Mar 6, 2014 |
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Mar 6, 2014 22:49
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fukken ULS come onnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
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Mar 7, 2014 14:07
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Should be getting the SDR adapter in today, going to hook it up to real antennas and see how it does. Also I found my PSK31 adapter so maybe I'll drag my laptop out to the driveway and we'll make a little PSK youtube
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Mar 7, 2014 15:08
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hope you get your ticket soon Putty more scanner dweeb chat: here's why you shouldn't buy a 536 yet: https://www.youtube.com/watch?v=zq7lKqHzhNA This is a Phase I P25 system in the video. A 10 year old GRE scanner decodes it fine but the Uniden sits there and BRRRRRRRRRRaaaaaaashhhhhhhhhhhhhhhhh (the Uniden scanner has the latest firmware fix too)
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Mar 7, 2014 16:02
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quote:The air waves in Fayetteville are about to get funkier. You'd better believe that I am hitting them up as hard as I can to see if they need any engineering help, equipment or other resources. This would be a great resume item. e: gently caress, they may not be up by the time i'm moved. Still, good opportunity to reach out
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Mar 7, 2014 17:00
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