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oh man do the Hardy Boys still hold up
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Mar 6, 2023 16:58
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Captain Foo posted:oh man do the Hardy Boys still hold up 100% imo and the vocab is miles ahead of other kids' books, my son broke out a couple 20 dollar words this weekend he learned from those books and I was beyond chuffed
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Mar 6, 2023 21:54
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Internaut! posted:100% imo and the vocab is miles ahead of other kids' books, my son broke out a couple 20 dollar words this weekend he learned from those books and I was beyond chuffed 
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Mar 6, 2023 22:06
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Internaut! posted:my dad and I used to mess around on CB bands with his Kenwood, but shortly after that the BBS scene came online and we went that direction instead That's awesome dude. my 7 year old is currently working through my tech license study materials as he loves my radios and we picked up a solid 2m handheld for him at a recent ham swap meet. (got him a well-loved vx-170, that thing feels like you could drop it out of an airplane without issue. It's got a 2008ish vintage NiMH battery though so i wonder how long that's gonna hold out).
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Mar 7, 2023 21:36
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Internaut! posted:100% imo and the vocab is miles ahead of other kids' books, my son broke out a couple 20 dollar words this weekend he learned from those books and I was beyond chuffed Sounds like its time for a grimdark reboot where all the music is slow quavering covers of uptempo songs. Also they're bisexual. --- Super glad you all are enjoying the thread! I've been listening to some 40m ssb lately; the bands are quite nice.
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Mar 8, 2023 00:03
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Jonny 290 posted:Sounds like its time for a grimdark reboot where all the music is slow quavering covers of uptempo songs. Also they're bisexual. apparently there ARE more "mature" Hardy Boys books that have been made; a friend of mine's mom got some for his boys without knowing this and apparently in the first book Chet's little sister gets blown up by a car bomb 😂
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Mar 8, 2023 15:40
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Internaut! posted:apparently there ARE more "mature" Hardy Boys books that have been made; a friend of mine's mom got some for his boys without knowing this and apparently in the first book Chet's little sister gets blown up by a car bomb 😂 yeah i read one of these and they are awful e: it was that one with the car bomb yeah
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Mar 9, 2023 04:55
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10m ssb and even FM is blappin'. Caught a couple repeater convos a bit ago. Cycle is up folks, get your HF while the gettin's good.
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Mar 11, 2023 19:55
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keep an eye on the solar weather
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Mar 14, 2023 18:30
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for any Canucks wanting to get their license, the govt has a shockingly good exam simulator covering every portion of the test in mind-numbing detail https://www.ic.gc.ca/eic/site/025.nsf/eng/h_00040.html
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Mar 15, 2023 13:32
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I tried to ask the instructor at my certification study course put on by my local club last night, but he didn’t really get it. are there radios that do direct digital modulation? generating audio signals on a computer and piping them into a voice input seems old fashioned to me
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Mar 30, 2023 15:56
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Well, sorta tricky. short answer is yes - and they've done it for like 70 years. you may see "RTTY" modes on HF rigs. when rtty became popular, they were trying to figure out how to generate the two tones they wanted to use for the 'mark' and 'space' (1 and 0) signals. Of course they didn't have computers or anything back then, but what they did have were crystal oscillators and the data line from the teletype, which was just a binary simple 5v or whatever line following mark and space. What they settled on was: * when you turn transmit on in rtty mode, it just yeets out the same single tone that a CW mode would if you held the key down. at this point with no data moving, the teletype data line was in one idle state (mark, if i recall) * when it needs a space (the other tone), the voltage on the data line would kick in * when that was on, it turned on a little shifting circuit built into the radio to move the frequency of that internal CW oscillator 170 hertz So that really was direct modulation to generate the desired signal. On most fancier rigs there's an "FSK" line that, if you were to hook up an old rear end teletype, will generate really clean RTTY. The reason most HF rigs don't bother with having a direct input is just the conventions of the bands. Almost all of the signals are 3 KHz wide or less. so, an audio line is a really good way to input what information you need for the desired RF output signal. the icom 7300 "sdr"? it's got a usb audio dongle inside it that you chuck sound to. FLEX radios can be directly modulated in the way you're thinking, and some other high end SDRs, but any modes that would require fancy direct modulation techniques need that type of radio on both ends for a contact, and they're not ubiquitous, so they haven't gained traction. Almost everything out there on the airwaves today is something you can use by having a computer yell into a microphone and listen to a speaker. It's also vastly easier, even in SDR architectures, to generate a baseband signal and convert it to the desired RF output frequency, than it is to directly twiddle bits to generate things between 28.220000 MHz and 28.223000 MHz.
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Mar 30, 2023 16:37
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It took me ages to figure out how to do RTTY "properly" like that using the RTTY mode of my FT-991 with fldigi. I did get it working eventually though.
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Mar 31, 2023 00:15
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*computer yelling into a mic" HELLO. I AM RADIO AND SEND SIGNAL TO YOU. ERRORSOUNDCARDSTOPPEDWORKING *radio doing direct modulation* Hello Sir, this is His Excellence Radio Teletype The Third. Please accept this handmade bespoke letter. I modified my v2000 antenna so vswr is better on ft8 50.313. it went from 2.2 to 1.26. Solution? But a piece from a telescopic whip antenna on top and then adjust while using nanovna. I had to put a piece of plastic pipe in the midsection since the antenna got longer. And lots of electric tape. I can get it to 1.105ish but i am going to wait til its less snow and cold.
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Mar 31, 2023 14:28
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the whole "direct modulation" concept isn't well defined, a SSB transceiver is just a frequency converter with side-band selection, the sound input and output is just a frequency shifted copy of the RF signal it doesn't really get more direct than that, and I'd argue that SSB isn't even a modulation form since it's literally just transverting voice (or whatever you want) frequencies into RF it's as flexible as it can be, you can literally transmit any modulation you want within the channel bandwidth with SSB radios last month I made a weather-fax FM demodulator in a DSP, the input is the output from an SSB receiver if you wanted to directly modulate the RF you might go a bit further and do I/Q modulation, but that requires a DC coupled signal and you can achieve the same result with both methods. it just happens that if you're building a radio these days it's cheaper and more convenient to use an I/Q complex modulator and demodulator instead of an SSB one, and a lot of RF signal processing is easier to do in the complex plane
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Mar 31, 2023 16:36
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thank you everyone for your responses. I have plenty to learn
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Apr 1, 2023 06:05
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any way for me to get a transverter for vhf and have this 1 in all setup so i can stop changing cables etc?
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Apr 10, 2023 14:01
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https://www.youtube.com/watch?v=SvN0uUClip8
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Apr 10, 2023 17:24
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Big Mackson posted:any way for me to get a transverter for vhf and have this 1 in all setup so i can stop changing cables etc? Something about this feels like a very not so friendly route.
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Apr 11, 2023 03:28
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i'd use the hf antenna for 6m if possible and just use a switch between the transverter and radio
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Apr 11, 2023 18:43
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Jonny 290 posted:i'd use the hf antenna for 6m if possible and just use a switch between the transverter and radio the v2000 is better at 6m than my wire antenna. i guess i will be buying a regular transverter and then some switches.
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Apr 12, 2023 13:07
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Big Mackson posted:the v2000 is better at 6m than my wire antenna. i guess i will be buying a regular transverter and then some switches. how about a 2nd transceiver to cover vhf+uhf -- is that too obvious? i would worry about the transverter being lossy / noisy
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Apr 12, 2023 14:39
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Helianthus Annuus posted:how about a 2nd transceiver to cover vhf+uhf -- is that too obvious? i would worry about the transverter being lossy / noisy if i find something used that can send vhf ssb and can be used with computer and ft8 then i might as well. I think a new transverter is much more expensive than a used vhf transceiver if one think about how much watt it can send.
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Apr 16, 2023 21:36
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well, you don't really honestly need frequency agility - aka CI-V tuning or whatever - on vhf/uhf weak signal modes. You park it and all the party is within the audio channel. So, any ssb rig that can take an audio input/output will work.
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Apr 16, 2023 22:40
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Y'all see that Kenwood is coming out with a new HT? I have no experience with their radio poo poo but it seems cool to have an alternative to Yaezy.
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May 24, 2023 13:14
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Yeah, nice looking radio, shame about the $1 billion MSRP. but thats always how the kenwood flagships have been also icom's right there too
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May 24, 2023 17:16
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drat yall, you could at least provide the info  TH-D75A, tri-band (2m, 1.5m, 70cm). im not seeing an official msrp, not sure if it can do cross-band duplex like the th-d72a can
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May 24, 2023 17:43
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Achmed Jones posted:drat yall, you could at least provide the info I read somewhere that it doesn't actually have dual VFOs so there's still no replacement for the TH-D72A.
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May 24, 2023 18:24
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Mantle posted:I read somewhere that it doesn't actually have dual VFOs so there's still no replacement for the TH-D72A. this is ridiculous ugh e: icom dropped the ID-50A . Looks like a refresh of the 51? Anyways i have a 51a VIP pro edition plus and it's an extremely good ham radio https://www.icomamerica.com/en/products/amateur/handheld/id50a/default.aspx
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May 24, 2023 18:44
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quote:Dualwatch *not actually at the same time
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May 24, 2023 19:29
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Yeah, it's a switcheroo thing. I do have some true dual-VFO radios so if i really want to do that i have options. My icom IC-2SRA!  it's an Icom W2A (very famous dual radio HT) except they replaced the 70cm transceiver on the right hand side with an icom R1 (also have one of those) - a 25-905 MHz wideband receiver and you might see something weird  that's right it has TWO ANTENNAS. the wideband rx side has its own dedicated antenna jack and a second whip.
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May 24, 2023 19:35
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what if you just ductape two baofengs together bing bong so simple
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May 24, 2023 20:31
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I'm hoping the new Kenwood depresses the used market a bit so I can grab a 72
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May 24, 2023 20:45
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they're very good radios but i fear they suffer from FT-60R-itis, where owners realize they're so good they are dragging them with them to the grave
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May 24, 2023 20:48
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yeah, and everyone who wants to do satellite work wants one (myself included). mantle hooked me up selling me his last year - with a fast charger - for ~msrp (iirc). this was a screaming deal given the insane current prices and i was happy to pay it. but when msrp is a screaming deal for a used discontinued radio there's something very weird going on in the market if i'm being honest it just makes way more sense to use any decent ht from whatever manufacturer for tx and a baofeng for rx and get full duplex that way. _but doing it all on one radio is just so cool!_
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May 25, 2023 03:32
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Achmed Jones posted:yeah, and everyone who wants to do satellite work wants one (myself included). mantle hooked me up selling me his last year - with a fast charger - for ~msrp (iirc). this was a screaming deal given the insane current prices and i was happy to pay it. but when msrp is a screaming deal for a used discontinued radio there's something very weird going on in the market i run half duplex off one ht. it is hard. i have to wait for a signal first to dial in the aiming
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May 25, 2023 09:36
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I’m very new with no equipment outside of a baofeng. local repeater traffic is kind of fun from a people watching point of view (listened to two guys arguing about brussel sprouts) but i want to try some low power longer range HF digital stuff so i backordered a QMX transceiver. since i don’t have a tuner or proper transceiver yet i was looking at end fed antennas but my lot isn’t really suitable to string 70 feet of wire as directed… suggestions on bang for buck off the shelf configurations i can get my feet wet with before i fill out my toolkit? am i understanding right that the balun in these antennas can impedance match any sort of suboptimal radiator on the other side, that the only issue is power delivery because a 100W balun on a 5W radio is going to be fine to burn up the wasted power?
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Jun 6, 2023 18:51
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Mmmm doesn't quite work like that but the short answer is you won't be at risk of smoking anything. The end fed matching boxes aren't baluns, they're transformers - in a balun, only the unbalanced power engages with the circuitry and the rest is passed through. In a transformer, all the power passes through the core/etc so they're susceptible to saturation. Do you have 33-35 horizontal feet? A 20m dipole is the easiest thing in the world to build and 20 is the fish-in-a-barrel #1 digital band. No tuner needed with a simple single band dipole if you're OK with an hour of trimming and tuning. Dependin on how little space we can get you going with just about any sort of compromise antenna setup. Even a 20 meter hamstick whip on a mount with a couple radial wires lying on the ground will get you running.
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Jun 6, 2023 20:25
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Awesome man, thanks for helping. Good to know 20m should be more than enough to get me on my feet. That’s a much more manageable length for the back yard than worrying about the 40m and 80m this transceiver can do. i will eventually report back.
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Jun 7, 2023 00:46
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40m is a very good band, and if I had to pick one, i would set up a 40m rig. It's got good distance but also is entertaining short-range during the daytime. The rocky mountain daily net is on 40m and I hear checkins from Arizona through Montana here in Denver. But 20's the real MVP, just because it's soooo busy.
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Jun 7, 2023 00:50
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