Everything posted by Christopher Davis
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thinking about pulling the trigger on an IC-7300 but have some questions first
i cant speak to the 570 comparison specifically but i picked up a 7300 about 18 months ago as my first real HF rig after starting on a little QRP setup and the learning curve on the touchscreen took maybe a week before it felt natural. one thing nobody mentioned to me beforehand was that the fan can be audible depending on your shack setup, not a dealbreaker but if you do phone and you have a sensitive mic setup in a quiet room its worth knowing. mine sits behind me and its fine.
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first time trying LEO satellites, completely lost on the doppler thing
ive been doing this about a year and honestly AO-91 was my learning satellite too. one thing that helped me way more than i expected was just listening to a full pass without even trying to transmit. just track it, keep the signal peaked, get used to how fast things move. because when youre new you're trying to physically aim the antenna AND tune AND talk AND not panic and its too much at once. the pass is over before you figure out whats wrong. also 73 degrees is a pretty high elevation pass which sounds great but it moves across the sky really fast near the peak, like surprisingly fast. some people actually find lower passes easier to work when youre starting out because theres more time. anyway keep at it, took me four or five attempts before i actually made a contact
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first WWFF activation coming up, any tips from folks who've done it?
yeah the 44 QSO requirement is the standard for a valid activation, thats been the number for a while now. and yes you can absolutely use HAMRS or any logger that spits out a clean ADIF, just make sure youre logging the WWFF reference in the correct field or you might have to edit the file before uploading. i think its the SIG and SIG_INFO fields if i remember right, worth double checking on the WWFF website before you go out. one thing i'd say from experience — announce your activation on the WWFF spots page ahead of time if you can, even just the day before. you'll get way more chasers tuning in and reaching 44 goes faster than you'd think especially if you hit a decent frequency on 40m. good luck out there, first activation is always a good time
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do you actually need to use the NATO phonetics or can you just say whatever
so ive been licensed about 4 months now and when i get on HF i try to use alpha bravo charlie etc but sometimes i hear guys just saying random words for letters like they'll say something like "N for Nancy" or "T for Texas" and im not sure if thats actually allowed or just an old habit or what. my elmer told me to just stick with NATO but i dont want to come across as the phonetics police either. is there like an actual rule about this or is it just convention
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felt bad about something i did on 40m last night, need some advice
so i've only had my general for about four months and i've been trying to get comfortable on HF, mostly just listening and occasionally checking into the local traffic net on 40m. last night there was a frequency that seemed clear to me so i called CQ a few times and then this guy came back pretty annoyed saying i'd been transmitting right on top of a slow speed CW net that apparently meets there every tuesday. i honestly had no idea, i listened for maybe 30 seconds and heard nothing. i apologized and moved but i still feel kinda bad about it. is there a way to know where nets meet ahead of time? i looked around and found some stuff about the ARRL net directory but im not sure how comprehensive that is. also the guy was pretty short with me which i get, i would be annoyed too probably, but is there like an expected way to handle that situation when it happens? do you just move immediately, do you say something? i kind of panicked and just went QRT for the night which was probably not the best move either.
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first POTA activation went better than expected — some questions though
yeah jumping bands is totally normal and honestly a good move, especially if 20m is starting to fade or you just want to rack up more contacts. some activators will even hit 40, 20, 15 and maybe 17 in one outing depending on conditions and time of day. nothing wrong with working whatever band has hunters on it. and yes the multiple park thing is definitely real — if two park units share a boundary or overlap you can count contacts toward both as long as you log them correctly in the POTA system. some guys plan whole routes specifically to hit 3 or 4 parks in a day, its called a POTA safari i think, or some people just call it a multi-park day. just make sure when you upload your log you have the right park reference on each contact or it gets messy. the POTA website has decent docs on this but the activator Facebook group is honestly where i learned most of it just from reading other peoples trip reports. sounds like a solid first activation, 18 contacts with a KX2 and a wire is a great start.
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first time checking into a net and i had no idea what i was doing lol
so i finally worked up the nerve to check into the local 2m net last tuesday after having my tech license for like 4 months. i've been listening to it for a while just to get a feel for things but i figured i should actually participate at some point. anyway the net control called for check-ins and i just keyed up and said my callsign and it was fine but afterward i realized i had no idea if i was supposed to say anything else, like location or that i had traffic or whatever. the guy running it just acknowledged me and moved on so i guess it was okay but i felt like i was missing something. also when there were two people who keyed up at the same time it got all garbled and the net control asked them to repeat and i could not figure out from context who was supposed to go first. is there like a standard way that gets sorted out or does it depend on the net? i feel like ive been operating in a vacuum and just kind of guessing at everything.
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first time doing CQ WW this year — what am I getting myself into lol
yeah what he said about N1MM is right, get that going ahead of time. also I'd mention — if you havent already — look up the CQ WW logging software guide on the CQ WW website, they have pretty decent instructions for first timers. one thing I wish someone told me before my first big contest is to take breaks. sounds obvious but I went like 14 hours straight my first CQ WW and by hour 10 I was making dumb mistakes in the exchange and my ears were shot. pace yourself. also if conditions tank on 20 meters try dropping down to 40 in the evening, usually comes alive real nice once the sun goes down. have fun with it, it's addicting
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anyone else do the weekly nets or is it just me talking to myself lol
oh the 40m nets are great once you get used to the fading and the QRM which honestly never fully goes away but you learn to work around it. i'd look up the ARRL Net Directory online, they list pretty much everything by frequency and day. the NTS traffic nets run like clockwork and the net controls are usually happy to have new checkins, some of them have been doing it for 20 or 30 years. for special event stations yeah most of them do send a certificate or QSL, sometimes both, you usually just need to send a SASE or request it via their website. worked a lighthouse one last summer and got a really nice printed certificate a few weeks later. they're a fun excuse to make contacts when you're not really in contest mode but still want something to chase. just check the ARRL and the special event station page, they list whats coming up usually a few weeks in advance.
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thinking about going for my Extra, is the theory part as bad as everyone says
honestly the question pool method still works for Extra, same as General. i wont lie to you, there are some questions where if you dont have at least a rough idea of whats going on you'll mix up the answers because a couple of them are really close together and designed to trip you up if youre just pattern matching. stuff like the reactance and impedance calculations, if you understand even the basics of what j means in a complex impedance you'll be fine. but i passed it studying maybe 6 weeks with HamStudy and a copy of the ARRL Extra Class License Manual. the manual explains things pretty well even if you dont have an engineering background. the privileges are worth it in my opinion, not just the band edges but also being able to act as VE for all license classes which comes in handy if you get involved with your local club's testing sessions.
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using arduino to automate my antenna switch — anyone done this?
so ive been messing around with an arduino mega for a few months now and i finally got to the point where i think i can actually do something useful with it for the shack. the idea is pretty straightforward — i want it to read which band my radio is on via the band data output on the back of my IC-7300 and then automatically switch my antenna relay box to the right antenna without me having to remember to do it manually. the 7300 puts out BCD band data on a mini DIN connector which is actually pretty well documented, so reading that part with the arduino should be doable. im more fuzzy on the relay side of things. im planning to use some SRD-05VDC-SL-C relays i grabbed off amazon, they should handle the RF switching fine for HF at least. but i keep reading conflicting stuff about whether i need opto-isolation between the arduino and the relay module or if the cheap relay boards already have that built in. has anyone actually built something like this? curious what pitfalls i ran into before i start frying things. also thinking about adding a small OLED display to show which antenna is selected but that might be scope creep at this point
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N1MM vs Log4OM for contest logging — anyone using both?
yeah the ADIF sync thing between WSJT-X and anything else is kind of a known headache. what i do is set WSJT-X to log to its own file and then at the end of the day i import manually into Log4OM rather than relying on the UDP broadcast stuff. the real-time logging via UDP sounds great in theory but ive had it drop entries when the cpu gets busy during a pile-up and then you're chasing down missing contacts anyway for contests i just use N1MM and dont even try to merge it into Log4OM until after the contest period ends and i've submitted the Cabrillo. then i just do a manual ADIF import and check for dupes. its an extra step but honestly less aggravating than fighting the auto-sync. Log4OM's dupe checking is decent enough that it catches most of the overlap if you have it set right for the band and mode.
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SO2R actually worth the headache? thinking about setting it up for next contest season
short answer: yes absolutely worth it, but you have to be realistic about the learning curve. when i first tried it i was so focused on managing the second radio that my run rate on the primary actually dropped for the first couple contests, which was demoralizing. the trick that helped me most was not trying to S&P on radio 2 constantly — just use it opportunistically. big pileup on your run freq, band 1 is dead for 20 seconds, flip attention to radio 2 and grab a mult or a quick S&P contact and come back. dont try to maintain two simultaneous runs until you really have the muscle memory down. on the filter thing — dont skip it. i tried running with just some band separation and my 100w on 15 was getting into my 40m rx bad enough that i was missing calls. bandpass filters arent cheap but you can DIY a set or find used ones and it makes the difference between frustrating and actually functional. the 4O3A or Array Solutions stuff works great if you have the budget. station complexity is real but once its set up and documented its not that bad — the operating skill part takes way longer to develop than the hardware part honestly.
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going from 5wpm to 20wpm - how long did it actually take you
the plateau around 13-15 wpm is basically a rite of passage, almost everyone hits it there. what got me through it was switching from LCWO to just listening to actual QSOs on 40 meters with a receiver and trying to copy without any pressure. no grade, no score, just real traffic. the thing about generated practice code is you subconsiously know the rhythm is going to be perfect and clean, real ops are sloppy and that actually forces your brain to work harder and adapt faster. took me probably another 2 months of doing that alongside my regular LCWO sessions before i was sitting comfortably at 18-20wpm. also one thing -- are you still trying to think of letters or are you hearing whole words? because if youre still going letter by letter at 14wpm thats probably your bottleneck right there. once words start coming as single sounds instead of sequences of dits and dahs it changes everything.
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studying for my tech license, not sure where to even start
the memorization approach works fine for passing the test but i'll say from experience you might regret it later when you're actually on the air and have no idea why your SWR is doing what its doing or whatever. I used the ARRL Ham Radio License Manual and yeah its a bit dry in places but it actually explains how propagation works, why you need a license at certain power levels, all that. took me maybe 3 weeks reading a chapter here and there. that said i also used hamstudy alongside it to make sure i was hitting the actual question formats. the math questions on the exam are genuinely easy once you see a few examples, dont let that part stress you out
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RMS gateway keeps timing out when trying to send longer messages
what's your data rate set to? if youre trying to push too much data too fast the gateway might just give up. also some of the older RMS gateways have pretty conservative timeouts especially on VHF where theres more traffic try dropping down to 1200 baud or even 300 and see if that helps. takes forever but at least it gets through
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thinking about going for my extra, is the theory part as bad as everyone says
just passed mine last month actually. the filter stuff is annoying but once you get butterworth vs chebyshev into your head its not that deep. the oscillator questions tripped me up more than anything tbh. i used gordon west's book and supplemented with hamstudy. took me like 6 weeks of cramming on lunch breaks the extra subbands are honestly kinda quiet which is either great or boring depending on what youre trying to do lol
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first SOTA activation totally humbled me, some tips would be nice
oh man the wind thing is real, that catches almost everybody on their first few activations. what a lot of people end up doing is just ditching the tall mast for windier summits and going with a lower wire antenna that you stake closer to the ground, like a simple end fed halfwave strung between rocks or trees if you have them. not as efficient maybe but it stays put and that matters a lot more when you're racing daylight. for the mast situation, some folks do use three or four guy lines staked out with landscaping stakes, pretty lightweight and makes a huge difference. i use cheap nylon cord from the hardware store. also there's no shame in leaning the mast against a rock or fence post if one is handy, summit infrastructure is your friend haha. 6 contacts is an activation, dont let anyone tell you different. and the fact that you spotted ahead of time and chasers were waiting, that's exactly how it should work. keep at it, it gets way smoother after a few times when you stop second-guessing every little thing and just operate
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what do all these Q codes mean on the air, people keep using them and im lost
73 tripped me up too when i first started, i kept thinking it was someones ID number or something. one thing that helped me was just making a little cheat sheet and keeping it next to the radio for a while. honestly after maybe a month of operating you wont even think about it anymore, they just become natural. oh and if someone sends you 88 thats love and kisses, usually used when talking to an YL operator, just so you know and arent confused when that comes up
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field comms setup for this weekend - generator questions mostly
the eu2200i at 25% load is remarkably thrifty, i ran one for about 6 hours at a Field Day setup a couple years ago and burned maybe half a tank, maybe a bit less. granted we werent transmitting constantly but it was a solid SSB station on 40 and 20 the whole time. the eco-throttle mode really does make a difference, thing barely sounds like its running. charging batteries while running other loads should be fine as long as your charger isnt one of those old dumb trickle things that surges weirdly when it kicks on. a proper 3-stage charger like a NOCO or a Victron will play nice with a generator. the inverter output on the honda is clean enough for sensitive electronics so you wont have RFI headaches from it either, at least in my experience. i keep mine about 30 feet away from the operating position and havent had issues even on 40m which i expected to be a problem.
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finally made my first contact last night, still shaking a little lol
so i just got licensed about three weeks ago, technician class, and ive been too nervous to actually key up on anything. been sitting on 2m with my baofeng just listening forever. last night i just said screw it and answered a CQ on the local repeater and the guy was super patient with me when i fumbled through my callsign like four times. we talked for maybe 10 minutes about nothing really, just where i was located and my radio setup but man it felt incredible. like i know its just a repeater contact and not some DX thing but it still got me. anyway just wanted to share since nobody in my family understands why im excited about this
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finally got my ugly construction 40m direct conversion rx working but audio is weird
so anyway i've been slowly building this direct conversion receiver for 40m over the past few months, nothing fancy just the classic NE602 mixer into an LM386 audio stage with a low pass filter in between. got it oscillating on frequency which took way longer than it should have honestly, my junkbox variable cap is a bit sketchy and the tuning is super touchy near the band edges. problem is the audio sounds kind of phasey or hollow i guess? hard to describe. SSB signals are intelligible but they have this weird quality like listening through a tin can. CW is actually fine and sounds clean which is confusing me. i double checked my decoupling caps on the 386 and they look okay, and the supply voltage is stable at 9v. wondering if maybe my IF filter is doing something weird or if theres some kind of feedback path i'm not seeing. layout is pretty loose on a piece of copper clad which probably isnt helping anyone dealt with this before with the 602 designs? ive built a regen before but this is my first proper superhet attempt, or well i guess DC receivers arent really superhets but you know what i mean
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linear transponder on AO-73 — am i doing this completely wrong
so ive been trying to work AO-73 for a few weeks now and i keep hearing myself on the downlink but either im way off frequency or something is just not clicking with the full duplex thing. running a yaesu ft-817 for uplink on 145 and monitoring downlink on a cheap SDR dongle through gpredict for tracking. the doppler correction on gpredict seems to be working okay i think but when i try to actually make a contact the whole thing falls apart — like im hearing myself fine when the bird first comes up but then by the time its at like 30 degrees elevation my signal seems to wander all over the place and i lose myself on the downlink i know the linear transponder is inverting so USB up means LSB down or whatever but i feel like im missing something fundamental here. do i need to be doppler correcting both VFOs independently or is there a smarter way to set this up with gpredict controlling the radio directly via hamlib. the passes here are only like 8-10 minutes and im spending half of it just chasing my own signal around any help appreciated, been doing this for about 6 months overall but satellites are completely new to me
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finally trying to learn CW properly - keyer question
The built-in keyer on the 7300 is totally fine to start, honestly it's fine for a lot of people permanently. I used the internal keyer on my radio for probably three years before I got a standalone unit and the main reason I switched wasn't quality, it was just convenience of not having to dig into menus. Mode A vs mode B is one of those things that sounds way more complicated than it actually matters when you're starting out. The short version is they handle what happens when you release both paddles at the same time mid-squeeze -- mode A stops immediately, mode B sends one more element. Most people learning iambic just pick one and stick with it. I use mode A and never think about it. Some operators swear by B. Just leave it on whatever the default is for now. For your sending at 8-10 wpm, the most important thing honestly is just consistency. Record yourself with the radio's monitor function if it has one and listen back. You'll hear immediately where your spacing is going wrong. The letters arent usually the problem for beginners, its the spaces between words that get sloppy. Also dont crank the speed up until the slow stuff feels completely automatic, theres no rush.
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finally starting to chase DXCC seriously — where do i even begin
im kind of in the same boat as you, been at DXCC for about a year now and just hit 187 confirmed on LoTW which feels pretty good. one thing i wish someone told me earlier is to not sleep on the digital modes, FT8 especially. i know some purists grumble about it but for filling in entities that are tough on SSB its honestly been a lifesaver. a lot of operators running low power from rare places can still make it into the log on FT8 when they'd never be loud enough for a phone pile up. Log4OM should work fine with LoTW, i use WSJT-X and it syncs up okay. just make sure your station location is set right in your LoTW account or your credits wont match up, learned that the hard way when i had a couple dozen QSOs that didnt confirm because of a callsign/location mismatch thing.