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Cocoa Crispies posted:had lunch with some grandpas and my girlfriend as someone who went to high school there, sorry you had to venture into Davie
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Jan 3, 2015 01:57
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by the way for you shortwave nerds here is a really neat thing that would a: be a good kit to build and b: really help your shortwave reception http://www.ebay.com/itm/1-Set-1-30-...=item541213b2f3 ive noticed these kits popping up (ebay search 'antenna tuner kit') and they look pretty nice. they say they handle up to 5 or 10 watts, i wouldnt trust them for more than a couple depending on the load, _buuuuut_ they would be very useful as a matcher/preselector for a shortwave receiver.
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Jan 3, 2015 04:22
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Jonny 290 posted:by the way for you shortwave nerds here is a really neat thing that would a: be a good kit to build and b: really help your shortwave reception It's for QRP so low power anyway, right?
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Jan 3, 2015 04:24
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right. they're using those little AM radio caps there, that's the power limiting thing. thing is you gotta be careful with a tuner, even at one watt or so if you're trying to match a half wave antenna, for example, you can get scary high voltages at the antenna terminals, that can break down those caps pretty quick E: my 13.560 beacon is starting to come together a bit. I think it is going to use an end-fed half wave, with the matching network and everything built right into the case. Why? This allows me to build a beacon that's basically "a box with one long wire running out of it", and if I get it thrown up in a tree 50 feet up, the antenna will trail down and hang nicely. no way i could do that with an attached dipole. Also halfwaves have really good radiation patterns, and we might get some long distance signal reports if we can get a good pattern out of the antenna. Solar power at the top should keep it running for a long time. Jonny 290 fucked around with this message at 18:14 on Jan 3, 2015 |
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Jan 3, 2015 18:10
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hey longview what's the lockup time on that dds when you change frequency? I noticed that these are loaded with a frequency and a phase word, that means we could load two different values at the right time and transmit slow speed PSK. thoughts? e: ok psk31 uses a raised cosine filter for amplitude for those nice round edges. not really possible without having a shaping amp after the generator. BUT look at this rtty with no problem https://www.youtube.com/watch?v=-YQe8AYZBQM Jonny 290 fucked around with this message at 18:38 on Jan 3, 2015 |
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Jan 3, 2015 18:33
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you might be able to just increment/decrement the phase register to modulate the phase, depends how glitchy the synth is when changing phase not sure if that will let you generate PSK31 since you'd have to modulate the amplitude of the signal as well... generating normal FSK or MSK might work though
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Jan 3, 2015 19:31
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by the way i have decided my primary radio-buyin' goal this year is to get an FT-817 in the spring. the form factor is too awesome, 2 watts/5 watts is all I need for my digital fun as I have the 735 for 150watt SSB stupidity, and I would rather have a 5 watt radio I can backpack up to the top of a mountain than a 100 watt radio that I can't drag up there. I wish Icom made an equivalent model, but I won't buy a micro rig without 2m/70cm so the 703+ is out.
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Jan 3, 2015 20:12
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if the FT-817 came with li-po batteries and a built in tuner it would be perfect (also, it would be the FT-897 i guess) i kind of want the IC-7200, but i also don't like not having a built in antenna tuner vertex standard has this thing: http://www.vertexstandard.com/lmr/HF-Radios/VX-1210 which has all that but afaik it's channelized and not really appropriate for ham radio use, it's more of a commercial/mil thing
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Jan 4, 2015 13:21
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last night i was webradioing pretty hard and found a guy on the west coast with a full size 160/80/60 meter fan dipole hanging up. I heard my first pirate beacon! 2097 khz (give or take a few), transmits a slow "A" every ten seconds. Supposedly it's somewhere in the Mojave with about 10-15 watts.
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Jan 4, 2015 18:02
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are either the bladerf or hackrf worthwhile? theres a couple neat things i seen regarding the blade and i have spare money in the radio budget so i figured it would give me something to do
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Jan 4, 2015 20:36
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yes i have a hackrf it is pretty god drat fun chams: humping 10m beacons today. also 11m freeband. oh and there was a nice 20 minute monologue by some guy on 27.385 LSB about how hams were all pussy bitches that paid for their tests because at the exams HE went to, you could pay the guy $200 to just sign it, and then he proceeded to sing all of "White Christmas" very badly. radio owns 10 meters seems particularly open to florida/southeast and the rust belt today. It's neat to switch between the 1/4 wave whip-and-ball-mount versus the 17 foot vertical + tuner, very obvious how the big half wave or whatever has a lot of low angle compared to the 1/4 wave the open-to-the-east thing is funny because our lot is basically adjoining a 15 foot climb up a steep hill to the east. everything that direction is shielded by dirt lol. i expect california to open the f up in a few
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Jan 4, 2015 21:02
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i have a bladeRF and it's ok, probably gonna have to get a PC with a modern USB 3 controller and CPU to really make use of it though, it's more of an experimentation tool than a radio windows drivers used to crash a bit, but they seem to have fixed that now, playing with gnuradio is fun i still plan to get the transverter board eventually which might make it more interesting to use since then i can experiment with HF transmissions and such couldn't tell you which is better, the hackrf might be a better choice depending on what you want to do
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Jan 4, 2015 21:17
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hopped on 146.52 while I was tuning up the icom and heard a guy calling CQ, which was weird he was up on panorama peak in estes park, 10k feet and 50 miles away. solid signal both sides with 5 watts (i was pulled back to min, maybe 3-4 actually) this tram dual band antenna is impressing me more and more all the time
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Jan 4, 2015 23:56
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bout to head to rat shack for a 5-pin DIN (they mate with 7's/8's on the first 5) and a couple transformers, i want to get on PSK31 with this gd macbook
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Jan 5, 2015 00:12
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i have no idea what's going on in this thread but did anyone read my antenna post? i just put it in the basement and aim it at a wall that i assume everything is reflecting off of and i get most of the channels i want. also my paperclip fm radio antenna is still going strong.
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Jan 5, 2015 00:13
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if your antenna works pointed at a dumb thing, go ahead and use it ive seen poo poo work in the dumbest situations and well just run with it you cant blow anything up just receiving
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Jan 5, 2015 04:16
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radio waves are neat i can see why y'all sperg out about them  it's funny and cool that i aimed a directional antenna at like a 120 degree angle away from the broadcast source and reception improved substantially
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Jan 5, 2015 04:19
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there's probably a real good explanation involving physics & science & poo poo but damned if i know
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Jan 5, 2015 12:46
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Jonny 290 posted:hopped on 146.52 while I was tuning up the icom and heard a guy calling CQ, which was weird ive got a tram in the suburban, i like it a lot. ive been thinking about that base antenna u've got on the hausbus and putting it on an old directv mount on my roof. I'd have to do some sort of lightning protection tho and get a bunch of coax so idk, prob not worth it atm, id rather save up for hf stuff
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Jan 5, 2015 17:34
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spankmeister posted:there's probably a real good explanation involving physics & science & poo poo but damned if i know the physics guys at work always talk about diffraction effects, might be familiar from optics, afaik the principle's the same and radio waves hitting edges tend to make diffraction patterns of course reflections while simple in theory quickly become unmanageable when working in real environments too going into edge case stuff it's also possible that pointing a beam antenna at a fairly local tower can overload receivers or amplifiers in the signal chain which will severely affect linear modulations like OFDM (european DVB-T for example) hitting it on a side lobe of the antenna would reduce the input signal
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Jan 5, 2015 18:04
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Palace of Hate posted:digital mode dogs I really, really need to get my General
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Jan 5, 2015 21:31
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i bought a new soldering iron and a couple trimpots and am gonna build a new interface cable thingy so that I can properly PSK31 and SSTV
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Jan 6, 2015 19:46
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and a solar storm has COMPLETELY wiped out HF I heard local CB, weak WWV down low and that was it. wow this is weird
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Jan 7, 2015 22:19
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Jonny 290 posted:and a solar storm has COMPLETELY wiped out HF the end times are apon us at least we won't have to hear the radio preachers and nutjobs when it happens
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Jan 7, 2015 22:23
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listening to the local repeater on my roommate's baofeng “asking about shirt size” “make it *ppbbbttttttt* x-x-l, that’s two-ex-ell, i’m a bit on the chubby side”
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Jan 7, 2015 23:03
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yep 2 meter propagation is fuckin weird right now look at australia (this is an APRS map)  that long line is about 800 mi/1300 km
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Jan 7, 2015 23:29
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Jonny 290 posted:yep 2 meter propagation is fuckin weird right now i got a real faint signal day before yesterday on the local SD with same pl tone or w/e that was def not local SD repeater. hmmery
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Jan 7, 2015 23:32
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'hey i know, i'll radio reference the frequency and see what comes up' NOTE: This section (Searching for Identified Frequencies) is available only to Premium Subscribers of the Web site 
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Jan 7, 2015 23:33
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PuTTY riot posted:'hey i know, i'll radio reference the frequency and see what comes up' get it from the source http://wireless2.fcc.gov/UlsApp/UlsSearch/searchAdvanced.jsp punch in freq, hit geosearch, enter your coords (yes its a horrible federal government web site but it works)
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Jan 8, 2015 01:03
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jonny a bunch of people are sending me $2 pay pals with their call letters and stuff what is happening
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Jan 8, 2015 02:35
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Jonny 290 posted:get it from the source Ty I'll check this out on a not iPad later
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Jan 8, 2015 02:41
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Jonny 290 posted:yep 2 meter propagation is fuckin weird right now idk what makes that radio pattern, as i only have my general. but if god had a chode and rubbed it on the ionosphere, wouldn't it look like that? also, i just got my general, and i'm too scared to talk on my baofeng until i get the etiquette down, so i'm evesdropping my local greybeards to see the general pattern. nothing too crazy. "i need to go in five minutes, actually, maybe sooner. i gotta change my shirt. actually it's late, nobody will care. nobody ever cares." 
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Jan 8, 2015 03:22
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TVarmy posted:idk what makes that radio pattern, as i only have my general. but if god had a chode and rubbed it on the ionosphere, wouldn't it look like that? i'm doing the same thing until my tech comes through, turns out there's a whole family of hams, including literal children :3
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Jan 8, 2015 03:27
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http://forums.qrz.com/showthread.php?463445-Five-Year-Old-Passes-Technician-Examination Go pass the GD test already, those of you who haven't. --- I got 2 things in today: a new rubber duck for my scanner so I can carry it around, and a 5 volt usb to serial adapter. icom used a 1 wire addressable TTL serial bus on their 80s and 90s rigs, you literally just tee them all up with 1/8" mono cables, hook rx *and* tx of the serial to the hot line, ground to ground. set radio addresses and it Just Works though the software is *awful*. i almost want to create a native os x app for radio control now. or at least a neat curses thing with figlet frequency readout --- rotor what the gently caress uhh i have no idea????
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Jan 8, 2015 05:48
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maybe ur PayPal is similar to a club or something and it's their way of keeping track of who has paid dues? or same thing but dude selling a thing? also kid ham owns would love to see kids pick up this hobby
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Jan 8, 2015 06:41
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Jonny 290 posted:rotor what the gently caress uhh i have no idea???? quote:[callsign] qsoed with [callsign]. qso data; date~15 dec.2014 23:13z freq.~ 10.1 mhz mode~cw rst~ 599 599 tks qso, cu agn 73! de [callsign] im gettin hamspammed here, I may actually have enough of thse $2 things to make it worth my time to reg a paypal account, I think I have at least 15 or so.
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Jan 8, 2015 06:57
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rotor posted:im gettin hamspammed here, I may actually have enough of thse $2 things to make it worth my time to reg a paypal account, I think I have at least 15 or so. have you worked CW on 10.1mhz?
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Jan 8, 2015 06:58
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u think its for qso cards?
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Jan 8, 2015 06:59
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Sniep posted:have you worked CW on 10.1mhz? oh I've worked it all right
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Jan 8, 2015 06:59
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PuTTY riot posted:u think its for qso cards? rotor posted:oh I've worked it all right ya. it's QSOs
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Jan 8, 2015 07:02
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