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You can do an inverted-vee or sloper with just one high-point tossed in a tree. It doesn’t have to be permanent.
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Aug 5, 2022 22:58
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Element length is the biggest thing. Here's my i-only-did-30-years-in-this-hobby-take: get it at or longer than 1/8 wavelength and with a coil match you can make it work but a 5ft whip will NEVER work at 75m. look at the waves not the feet radiation resistance below that is just too hard to deal with and unless you're building a 630m setup (DO NOT DO THIS) more wire is always better than more coil
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Aug 5, 2022 23:25
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you loving MOTHER FUCKERS https://qrpblog.com/2022/08/icom-ic-905-shf-sdr-transceiver-2-4-5-6-10ghz/
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Aug 20, 2022 04:22
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What is even in the 10ths range that is ham-related?
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Aug 20, 2022 04:31
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satellite, but I don’t know of any amateur sats visible from north america in the x-band offhand
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Aug 20, 2022 05:46
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i feel like we (US) at least have pretty open gently caress around privs in these spaces tho?
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Aug 20, 2022 06:39
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https://www.arrl.org/band-plan
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Aug 20, 2022 11:34
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Getting one of those oval black and white stickers for my car that says 10368.100
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Aug 20, 2022 16:32
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Jonny 290 posted:you loving MOTHER FUCKERS Is it just me or is it weird to have ATV features but not 900 MHz? Isn't that a popular band for ATV because there's a lot of room to play and it overlaps with standard cable frequencies allowing off the shelf TVs to receive?
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Aug 20, 2022 19:27
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Isn't 900 MHz one of the Forbidden Frequencies cus we still haven't updated the lovely "no spying on analog cell phones" law from the 90s?
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Aug 21, 2022 19:20
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Japan doesn't have a 902-928 allocation, and these radios are built for Japan First, Rest Of The World Second.
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Aug 21, 2022 23:33
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What is the TG for this thread? Local repeater finally have DMR  That IC-905 is very tempting since i already have everthing i need for QO-100 except something that can transmit 2.4 ghz.
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Aug 24, 2022 11:22
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I found out that it might be cheaper to buy a IC-7300 from tokyo and pay TAXES rather than buying locally (which is sold out all the time forever). The radio shop's inventory in norway is... not good. 
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Aug 24, 2022 16:27
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Big Mackson posted:What is the TG for this thread? Local repeater finally have DMR 3163563 brandmeister
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Aug 24, 2022 17:51
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Radio Nowhere posted:3163563 brandmeister Remember to do group and not private. It's pretty quiet outside of the net, but some of us will generally have a radio on from time to time.
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Aug 24, 2022 18:26
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I discovered that the Internet Archive has a bunch of old radio dramas on it, so now I'm considering putting together a little AM transmitter so I can be a dork and listen in on my old radios. (got my Little Orphan Annie decoder ring and all) Anyone built one of these and been pleased with the results? Kits or schematics preferred, it's kind of boring to just buy a ready-made thing. I've got a few tubes lying around but for convenience solid-state is best.
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Aug 24, 2022 19:40
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Here's a fairly simple PLL controlled one: https://nfor.nl/radioforumservice/index.php?p=artikelen&sub=artikel-am-pll-2-1 Be aware it's designed for the 9kHz channel spacing - you'll probably need to change some divider stuff if you want it to adhere to the 10kHz USA channel spacing.
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Aug 25, 2022 09:48
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drunk mutt posted:Remember to do group and not private. Thx, i didnt understand why i contacted [redacted] directly lol. edit: i confirmed with the customs office that i indeed just have to pay 25% extra of what the item costs thus saving 200 dollars over buying locally. IC-7300 will replace my KX3 and i will finally have 100w. Aglow in Radiation. Big Mackson fucked around with this message at 14:04 on Aug 25, 2022 |
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Aug 25, 2022 13:51
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Yep, that was a dead group. Dead and gay as they say.
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Aug 25, 2022 14:30
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Pham Nuwen posted:I discovered that the Internet Archive has a bunch of old radio dramas on it, so now I'm considering putting together a little AM transmitter so I can be a dork and listen in on my old radios. (got my Little Orphan Annie decoder ring and all) i'm interested in this, too. i broadcast soma fm over FM with part 15 stuff, but i'd love to have an option for AM that takes audio in or whatever. I haven't been able to find anything suitable, by which I mean something that's a cheap dongle or just involves some software and jamming an antenna onto a gpio pin on a raspberry pi
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Aug 25, 2022 16:22
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Yeah, it will come to life Tue/Fri 9p eastern. Generally the script is ran through in like 10 minutes and a lot of times we'll rag chew afterwards for a bit.
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Aug 25, 2022 16:23
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2 days from tokyo to norway for my ic-7300, slower from south norway to north norway lol. Have anybody tried PTRX-7300? I am looking for ways to get the best broad spectrum signal out of 7300 to computer/sdr.
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Sep 4, 2022 19:10
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Big Mackson posted:2 days from tokyo to norway for my ic-7300, slower from south norway to north norway lol. I had a PTRX when I owned a 7300, it was great. It was super easy to install (and remove), as well - I think you'll spend more time with the screws for the case, than it takes to install. I had it paired with an RSP1A, and it worked perfectly - I had the VFO synced with it using omnirig.
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Sep 4, 2022 19:21
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manero posted:I had a PTRX when I owned a 7300, it was great. It was super easy to install (and remove), as well - I think you'll spend more time with the screws for the case, than it takes to install. Awesome, maybe my "touch of death" as my brother has dubbed it wont affect the ic-7300 while installing. (i also have a rsp1a so are you me from the future?)
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Sep 4, 2022 19:26
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Big Mackson posted:Awesome, maybe my "touch of death" as my brother has dubbed it wont affect the ic-7300 while installing. It's easy, just follow the directions. I'm pretty sure you can find videos on YT of people performing the installation.
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Sep 4, 2022 19:27
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PTRX is avaible locally. not bad. *nods buscemicly* ic-7300 is great. what more can i say? its heavy tho. *goes back to listening to 6m even though nothing have been heard there all year*
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Sep 6, 2022 20:55
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Big Mackson posted:PTRX is avaible locally. not bad. *nods buscemicly* I got all excited over my first 6m contact. It was another guy like 4 houses down from me, but at least I’ve got a local buddy in the neighborhood.
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Sep 7, 2022 00:22
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blugu64 posted:I got all excited over my first 6m contact. It was another guy like 4 houses down from me, but at least I’ve got a local buddy in the neighborhood. lol, a qso is a qso i guess.
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Sep 7, 2022 12:40
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After sending 100w ft8/wspr for 2 minutes swr goes to infinity. 10w for 8 minutes swr stay the same. I bought a new radio so i could 100w 
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Sep 12, 2022 15:30
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something is heating up or saturating at a point at or past the antenna jack on the rig (assuming the rig isnt defective). whats your antenna and feedline setup
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Sep 12, 2022 16:20
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Big Mackson posted:After sending 100w ft8/wspr for 2 minutes swr goes to infinity. 10w for 8 minutes swr stay the same. I bought a new radio so i could 100w What kind of antenna are you running? While there’s a chance you’re exceeding the duty cycle of your transmitter, the high-swr symptom reminds me of a saturated transformer in something like an end-fed antenna.
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Sep 12, 2022 16:23
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my exact thinking. Bet there's some ferrite in the pipe and it's heating up
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Sep 12, 2022 16:39
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Tested with dummy load and nothing went wrong so it is either antenna,cable, or the 9:1 balun. Just glad it wasnt the radio. random wire (17-18 meterish long, it is a telephone wire) and 9:1 balun.
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Sep 12, 2022 18:46
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This is what’s inside a cheap ebay “100w” transformer, versus what DIY plans suggest for “100w ssb/50w AM” I spent twice as much on the bare ferrites as I did for the whole ebay thing, but the size is what gets you power handling. 
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Sep 12, 2022 19:12
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Fun thing I did with my SDR on 80m just now: there's a pair of conversations going on at 3.386 MHz, one on upper side band, and the other on lower side band. SDRuno lets me spin up 2 virtual receivers and demodulate both at once  the guys on upper side band (wrong) were having a nice chat about HVAC, and the guys on lower side band (right) were arguing about government conspiracies EDIT: nevermind the upper side band guys have switched over to conspiracy chat too. That didn't take long!
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Sep 13, 2022 04:51
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eddiewalker posted:This is what’s inside a cheap ebay “100w” transformer, versus what DIY plans suggest for “100w ssb/50w AM” its the 9:1 thing. it's really hard on ununs. I really like 43 or 86 foot (so 13 or 26m) wires, fed against ground, with a 4:1 unun. i had an 86 foot inverted L up fed via 4:1 and about 40 feet of LMR400 to keep the loss down, and with a manual tuner i could do 160-10, though i focused on 40 and 20.
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Sep 13, 2022 07:10
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Now that i just send at 50w until i replace balun/wire/coax i wanted to send ft8 in the MORNING for once to see who hears me. yeah, i know. this was the result.  i should wake up earlier. ordered magnetic balun and wire made by sotabeams. if things overheat after that then idk. Big Mackson fucked around with this message at 09:43 on Sep 14, 2022 |
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Sep 14, 2022 07:11
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Here is my rig station after installation of ptrx-7300. whops wrong picture, they look so similar. 
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Sep 26, 2022 16:08
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my signals on 20m goes all over the world: i sleep first time anyone have heard me on 6m: real poo poo? 
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Sep 26, 2022 16:26
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| # ? May 13, 2024 16:13 |
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yep! My current record is Denver to Canary Islands on 6m. It took me a few FT8 tx's to grab him and about 80 watts into my 2 element beam, but we got er done.
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Sep 28, 2022 08:11
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