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>>2576037
let me tell you about my diaper...

How to make radar?

>>2576054
>get speed ticket
>pay cop in gold bars
>say you'll accept his radar pistol as change
It's probably in the FAQ somewhere.

I'm trying to listen to an air traffic control tower and other airport freqs on kiwisdr, the receiver is located about ten miles away. I can't hear anything, noise if I turn squelch off but other than that no talking at any time of day, even when flights are departing. I can listen to AM radio like the radio in my car picks up just fine. Is there a difference between that and the frequencies airports use?

>>2576135
Yes, car AM is MW and airband is VHF. VHF depends on line-of-sight and may be blocked entirely by buildings and hills on the ten miles.
Also, what antenna are you using?

why would you people want to listen to this shit

What's a good ssb sw receiver I can listen to cuban music on while camping?

>>2576148
Thank you, I've been trying to figure out the difference. I have no idea what antenna the guy operating the kiwiSDR is using, I'm accessing it through the website. The receiver only goes up to 30mhz, so I think the issue is that it can't pick up VHF.

>>2576203
Some tecsun. Theres some russian and belarus ones but uhh, good luck buying one. Mahalit and i forget the other.

Belrig radio https://belrig.by/belka%20dx

Why do radios have intercept? I understand why they have slope but shouldnt y intercept always be 0?

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>>2576211
>The receiver only goes up to 30mhz, so I think the issue is that it can't pick up VHF.

>>2576211
AM, FM, USB, LSB, are modes of transmission, the way the information (voice) is modulated.
HF, VHF, UHF are band ranges, 300KHz-3MHz is LF, 3-30MHz is HF, 30-300 MHz is VHF, 300MHz-2GHz is UHV etc.
on a usual radio SW is for shortwave, it's the broadcast name for HF :
https://en.wikipedia.org/wiki/Shortwave_bands
and the modulation is usually AM
FM is for 87-108MHz, so it's VHF
for aviation, the AM band is 108-144MHz (or something like that) and modulation is AM so it's AM on VHF

>>2576235
I don't understand what this tells me, I'm not interested in transmitting on anything, only playing with this web based SDR and eventually setting up my own with a more capable receiver to listen to other frequencies, though I'm not inquiring about that.
>>2576240
I see, thank you for the explanation

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>>2576244
you welcome, anon
On antennas : they depend on what frequency they work on, the directivity (you want to receive everything around or just in a particular direction) and the bandwidth, the difference between higher and lower frequency it can work on, also power they can transmit
Antennas aren't influenced by the mode
So for a HF SDR a large bandwidth omnidirectional antenna is desirable
usually they are active antennas with a rectangle of metal directly connected to a small large bandwidth amplifier that receive the electrical field of the electromagnetic wave because they act as capacitors.

https://a43.veron.nl/projecten/active-antenna/

>>2576054
Any guides?

>>2576250
For my setup, I want to listen to local fire/ems on narrowband FM. The RPS1A is what I plan on using (1khz-2ghz) so that should work, I was planning on first trying it with my vhf/uhf TV antenna since it's already up on my roof, will this be sufficient?

>>2576289
>will this be sufficient?
absolutely, for receiving it's ok to have an antenna vaguely compatible with the band you want to receive and more importantly, with a large bandwidth.

I receive airband with a HAM antenna made for HAM VHF : 144-148 MHz
it even receives ADSB (1090MHz from memory) well too kek

>What's the Point of This Shit Hobby Exactly?
Absolutely none for me, I only do audio electronics. I hate everything wireless with a burning passion.

>>2576288
Yes. Look in the archives, a Youtube video was posted.

Another LW antenna down
https://twitter.com/IberiaDX/status/1633140790091194369

>>2576298
>>>/diy/ohm/

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>>2576037
whys nobody feld hell?It's my favorite mode but it doesnt seem anyone uses it and nobody ever replies to my calls

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>>2576321
I answer calls if I hear them, but they're also rare in Yuropoor.
Check Feld Hell Club activities or the Contest Calendar.

>>2576329
I'm in rural Croatia. All I hear is PSK31 and cw.

>>2576332
Can you get on 80m?

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Nobody actually answered, even though it's not a trivial and the answer can't be googled. I'm noob and can figure that by myself.

Lets say there are two engineering teams with equal RF capabilities and knowledge, and you come to them with your 2.4 GHz device and tell them to design a directional patch antennas for maximum range L. Will they come up with the same antenna size and shape because there is an optimum solution?

>>2576358
>I'm noob and can figure that by myself
So why do you ask ?

>>2576361
"I cannot answer", typo obviously.

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The Chad repeater

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>>2576313
they have two lw transmitters the more powerful one is still on

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Brb, not paying thousands in antenna costs to make DX contacts.

Are there VHF UHF talkies that have multiple sets of memories such that I could set up sets of memories for different locations I got to?
I'm done being a baofeng poorfag.

>>2576358
>>2574930

>>2576667
I don't think so, maybe you can prepare multiple sets of memories in CHIRP and load it before you go ?

>>2576667
Yaesu FT5D.

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>>2576727
Not that anon, it is quite expensive but that kind of memory bank can be useful, thank you

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hello,
I'm giving interest to watch the 0-2000Hz band at home with an antenna.
the situation:
My building is 12 meter long,
There is a 3phase cable running hooked to all buildings of the street and feeding them.
I face dirty noise at nights, like wobbling at low freq. and aggressive vibration feelings.
I know I shouldn't install antenna inside a building to catch good waves.
I think this 3 phase cable, unshielded, may act as an RX for radio pollution
Recording with an antenna seems a good solution to catch view of potential assles

Am I wrong on my theory ?
what would be the best antenna to craft or buy for this unorthodox purpose ?
A simple copper of 48mm2 parallel to that grid cable ?

>>2576815
Hello anon, you really want to do VLF ?
That cable will fuck that up anyway, all the appliances connected to it will inject some crap, the linky too

>>2576667
opengd77 does this, dunno if the stock radios do this as well

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>>2576831
>Hello anon, you really want to do VLF ?
Hello, It's some kind of VLF tracing yeah
>That cable will fuck that up anyway, all the appliances connected to it will inject some crap, the linky too
>the linky too
Interesting fact you pointed the L10N source of potential problems. Le dirty french electricity.

How to be sure about my own line quality ? I need a tool to plug in outlets and watch its quality.
I'd be please to see some craft mixing high pass filter and picrel to have a view on the grid's signal.

concerning the power quality hitting the SDR and the antenna: both are connected to a Trendnet POE Switch, connected to a Legrand UPS, connected behind some HPI differential switcher, then 2 Low Pass Filters + a surge protector. And then the linky shit.
I let my antenna indoor especially to focus on observing, learning and understanding EMI.
A submarine radio officer told me some on the havoc this PLC was for him.

>>2576815
Ethernet, LED power supplies, inverters for solar panels and powerline modems are all major sources of noise. You might want to experiment on VLF away from urban areas and using battery power.

>>2577042
true, I have accumulated a good amount of university labs' studies on the subject. It's somehow a nightmare, and above all are electric cars sockets.

>>2576936
Never heard of it.
Do you have to put this on the gd 77 radio?its impossible to find new without scalping prices.

>>2576332
Can you get on 80m, Croatian Hell anon?

Anyone manage to flash SI5351's? 'They' will flash them for you at purchase (probably in the thousands+ of units) but they don't offer a DIY solution, so it's soft-program in RAM by microcontrol after every reset. At $3 a pop once hard-programmed, plus a $1 solar light, they make the perfect combo for evening-time peace when dealing with carrier throwers, but adding a microcontroller to reprogram it after every reset drives the cost up 5x.
>>2576321
There's always JS8. It toggles between 20m/40m. There's some weird groups that use 80m and 11m. I like JS8 because it keeps track of 'known' stations and you can add notes to callsigns which helps me remember people.
>>2576815
Miniwhip or ferrite wound coil? Would really be good to join a group. Even receiving the ~150khz stuff is tricky. Good chunk of what I hear below 500khz is bleedover from someone on another channel (i receive the same digimode message from them at the same time on multiple bands, with the highest SNR in some other band well above 500khz).

>>2577042
>You might want to experiment on VLF away from urban areas and using battery power.
That feel when you've unplugged enough shit to swap to battery, shut off main breaker and the noise level doesn't change.

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Lost interest once I realized it can't radar track squirrels by default. What do?

>When your elmer quits his meds cold turkey
https://youtube.com/watch?v=OnInQnddyhI

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>FCC giving 15m, 40m, 80m data and phone privileges to techs
WE DID IT BOYS.

>>2577464
>ssb only for phone
>in a narrow as fuck part of the band
Enjoy fighting with faggots and boomers, it's going to be more crowded than walmart on black friday.

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>>2577302
kek it's hell on radio, and all quiet in the neighborhood.

>Would really be good to join a group
you mean a local radio amateur group? maybe. working in communities is always better. different brains, different ideas, knowledges and shares.. But it would need car in my situation.

Sometimes it's all clean, then it fills. I see particular patterns passing by. I did test with microwave oven, oven, induction tables and it doesn't raise noises on the display.
Some (next post) are really fractal looking, which I understand as normal to experience when dealing with quadratics and orthogonal signals. I'm also thinking, it's more the dB heights of each harmonics that could be of interest in my situation.

>>2576667
try harris or thales

>>2577224
>Anyone manage to flash SI5351's?
I never heard that was possible, source?

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>>2577629
>>Anyone manage to flash SI5351's?
>I never heard that was possible, source?
It's in the datasheet. Maybe the field programmer supports it but I'm not spending $500 for their I2C <-> USB adapter.

>>2577701
There used to be a development kit for that:
https://forums.parallax.com/discussion/170695/p2d2-with-p2-revb-taking-orders/p2
If you can find it, you might be able to do it.

Ther Si5351 familiy is getting rather old, I am surprised nobody has made a better version with a mcu and a SA612 like part integrated. The bandwidth into the Si5351 is limited and is just enough to get SSB working on HF. A wider BW could enable wider modes.

>>2577502
>>Would really be good to join a group
>you mean a local radio amateur group
No, a VLF or whatever group online. I found an eastern australian one but I'm sure there's others. Those guys share reception reports and whatnot I guess based on agreed upon times to transmit. Some of those digimodes are like WSPR but with like a 30 minute transmit time.

Personally I would work my way down in frequency gradually and adjust things so I could go lower. 630m 474.200 khz for wspr, 2190m 136khz for wspr, etc..

If you look on PSK Reporter you can see the weird frequencies people are using.

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Delicious colors.

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>>2576329
KEK

>>2576667
This is exactly what baofengs are made for. Own one for each area you go to.

>>2578196
Source?

>CQ CONTEST

>>2578501
https://www.youtube.com/watch?v=UBDqPFzDH5g

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fucktards make me seethe on qrz

Now that https://qrznow.com/ is gone, what other good news sites remain?

>Ham amateur radio license holder
It's for you Anon.
https://boards.greenhouse.io/spacex/jobs/6369168002?gh_jid=6369168002

>>2579606
Battle hardened Morse code operators with QRQ on speed dial should start on 200k.

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Hello,

I've been an SDRfag for the last half decade. I love it, just listening and pulling in signals with home made antennas mostly. I have a large yard out in the middle of nowhere to do this from. Big enough I can build beverage class antennas.

But for some reason I want a base station transceiver. I think if I got one, it would motivate me to get my license and get into things like WSPR.

Am I completely autistic or does this seem like a decent plan? The newer transceivers can decode on the unit and I wouldn't need a laptop with a dozen outdated programs.

>>2579647
is that SDR good Anon ?

Don't ask yourself questions if it's useful or not. Do it and you will not regret what you learnt through the coming years.

I'm mostly in the same position. I have Kiwi & HackRF1 and I'm going to learn & improve things and have already have a particular goal to fulfill.

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The antenna just got 10 feet higher.

>>2579647
>The newer transceivers can decode on the unit
They are too expensive, just get anything that does SSB and put the audio and PTT into a raspberry

>>2579921
>gotta save for those dragon dildos

>>2579965
I am saving for the antennas. I need to go from the 80-40-20-15-10m end fed to a dipole for 80-40 and the Cobweb for 20-17-15-10m I already have but needs a overhaul, changing wires and maybe a new Guanella 1:6 Balun that can handle 200W
Also a Big choke that can handle 500W for a friend with a FD4, when he transmits all the computers in the shack restart kek

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>>2579647
>But for some reason I want a base station transceiver.
Do you want to go B-I-G?

>>2579980
Get a real radio if you're going to invest in an antenna farm, 'tardo.

>>2579997
I have several, FT-450D, FT-920, FT-900, FT-981...
But to do digital modes you don't need much.

>>2579998
>tunes up on frequency
>CQ CQ

>>2579980
>dipole for 80-40 and the Cobweb for 20-17-15-10m
I'd get a hexbeam at that point, for up to 40. Then just hang up an 80m end fed or dipole. My buddies sirio 2016 tunes up to 10, cb, 12, 20, and 40 though. Also works better than his dipoles on this frequencies and is pretty broadbanded with the internal tuner.

>>2580083
>hexbeam
I live in mountains, so a directional antenna isn't worth it, unfortunately
Vertical antennas are very interesting, it seems that they work well, but again, if my angle is too low it will just go into the mountains. I can try a sloper, things like that, there are a lot of things to tinker with

>>2580116
Dipoles and cobwebs are directional.

>>2580083
The Sirio would receive HF better without the shield connected.

>>2580126
>Dipoles and cobwebs are directional.
Thankfully everything interesting is east/west

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10m is stupid busy, like 100 people on each FT8 decode. Here's a few minutes of decode.
If I'm off by 5hz on 30m (10mhz), wouldn't I adjust by giving my radio 0.5 PPM adjustment or 5ppm?

>>2580163
>off by 5hz
Why isn't GPS diciplined oscillators more common?

>>2580163
>100 people on each FT8 decode
Is that what you're actually decoding or just what you see on the graph? My program seems to limit it to 20-30.

>>2580142
>The Sirio would receive HF better without the shield connected.
It txs on those frequencies as well. Maybe try rotatable dipoles? Mosley has great ones.

>>2580126
The cobweb isn't or at least it's negligible ? That's one of the good point of Cobwebb/Cobweb antennas
Dipoles yes but I don't have one, the end fed blind spot is against the main hill so no big loss

>>2580165
>Why isn't GPS diciplined oscillators more common?
I mean.. i have USB GPS so I can bootstrap the clock on my raspberry Pi if I'm in the field without internet. I have a ton of those i2c battery backup clocks tho, so I guess I could do without GPS, but I'm not sure how to GPS discipline it unless I do some weird swapping out of the TXCO
>>2580167
I mean, I'm getting several pages of decodes, and one page is 34 callsigns. I'd get about +10-20db gain using my narrowband antenna instead of this one, so I'm estimating ~100 decodes on swapover. This is actually a mild day for this month/week.
>>2580170
>>The Sirio would receive HF better without the shield connected.
>It txs on those frequencies as well. Maybe try rotatable dipoles? Mosley has great ones.
I'm indoors, but I can somewhat rotate. 11m vert for local, magloop for listening , active magloop for wide listening and wideband 'dipole' for general purpose.

On HF I can hit the opposite magnetic pole of the earth as hard as I can hit my nearby neighbors. Strong 11m neighbors miles away with a vert can hit you hard enough to hear on a dummy load.

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Few mins later

>>2580179
>I'm not sure how to GPS discipline it
PPS

>>2580179
Why not put your antennas in open air?

I'm building a rocket model and I want to receive a telemetry when it ascends let's say 2000 m up in the skies. In my case telemetry is just a bunch of numbers from different sensors let's say ten times a second, no video stream.

How can I do that? Obviously I need a diy solution, a chip or chips which I can solder on my custom flight controller. I need an antenna as well, because obviously I can't put a stick or a rectangle on a rocket hull. Help.

>>2580258
LORA or APRS?

>>2580259
How did you answer that fast lol

I can google those names but it doesn't give me answers I asked...

>>2580260
You need something like an APRS module that sends packets on VHF, and you feed it the telemetry data with sensors on the developer board.
On the ground, you need an SDR and software to read the VHF packets.

>>2580262
No, I need a diy solution. I've searched for APRS modules, they are huge and heavy boxes, while I have a relatively small rocket model. Plus need an antenna on the rocket and as said earlier it can't stick out. On the ground I will make another PCB with a receiver and connect it to my python ground station GUI.

Please no black boxes and no SDRs etc, I need only RF MCUs and amplifiers with schematics, which will work in this case.

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>>2580274
>meine gesicht when he doesn't design ze rocket around ze payload

Do I catch a ft-817nd at half price
or should I pass and get better?

>>2580660
>half price
What's the catch ?

>>2580661
people no longer insterested in these I think.

>>2580661
>>2580662
I thought the 817 and 818 went out of production after some components went EOL. I don't know which ones that would be, but if it is true, repairs could become a problem.
Hopefully a more modern 819 will turn up.

>>2580662
>jewish poster

>>2580660
It's good, take it.
The 817 seems unintuitive, but once you're through the manual everything starts to click.

All the best 73's regards and well wishes to you and your loved ones. God bless, goodnight and farewellz over and out.

>>2580781
That poor ruskie last night on 40m who answered the CQ from an american and ,oh dear, the yankee was a net manager and he asked the ruskie to give a report to the whole net and after each contact Yvan repeated desperately all the good he thought of everyone and addressed his best 73s and good luck and good night and best wishes to you and your family friend, but no, there was another texan to give a report too. Laughed my ass off too much to get into the circus.

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6th TV antenna attempt for my friend. Patio umbrella stand + masting + beam antenna FTW. 30-40 miles through the mountains and getting everything now.

>>2580258
k, what's wrong with wifi? ESP32 or whatever. HF digimodes are like 1-8 seconds per bytes.

>>2580258
You have a normal scenario that already has a market of products. Assuming your time is free, anything you 'DIY' will cost at least 4x more than existing solutions.

My city's right on the corner of three counties. Is there a way to find relevant frequencies within a radius or something or do I just have to check each county on radio reference and figure out which frequencies are relevant?

>>2580860
Hook an SDR up and see what's active.

It would be cool to have a program that watched for you and noted frequencies with activity and signal strength over a day period.
Some kind of machine learning waterfall interpretor?

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WTF, there where HAMs killed during HAM activity at some point
http://www.arrl.org/news/the-spratly-islands-dxpedition-gets-wings
https://en.wikipedia.org/wiki/Amboyna_Cay

In 1982, a Singapore yacht operated by the owner and his wife were carrying four German hams on a DXpedition to Amboyna Cay in the Spratlys. The boat was fired upon by Vietnamese forces. Diethelm Mueller, DJ4EI, was hit by an artillery round and fell overboard as the yacht caught fire. The rest of the party drifted for 11 days on debris, but Gero Band, DJ3NG, passed away from thirst the day before the group was rescued by a passing Japanese freighter and taken to Hong Kong. --Thanks to DX0DX DXpedition Public Affairs Leader Jim Linton VK3PC for some of the information

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Grounding rod is in about 6ft.

>>2577464
source?

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>>2581280
Just gotta cut the tip.

>>2581280
Nice job anon, if the terrain isn't wet all the year, you can add more rods in series with that one, also, as this is HF ground, a solid conductor is far less efficient than a multi wire conductor, the more strands there is the best it is, HF is only travelling on the outer of the conductor (skin effect) so by multiplying wires you add surface

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>>2581366
One at a time. It was quite the workout pounding through rock.

>>2581387
Oh you have more to go, nice

>>2581388
Yeah I'm running a separate rod for the antenna mast.

>>2581295
>>2581387
you should look into how to properly install a ground rod

>>2581556
It's properly in, it's 6ft instead of ft but that's up to local code.

>>2581595
6ft instead of 8ft*

Never thought of cutting them. Doing multiple rods within feet of each other apparently reduces the effectiveness. FWIW. They sell cheap bus bars near the groundrods and you can tie everything together with one.

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Just cleaned up my ham area. Got the 706 from a buddy recently, and have a 6pin power cable coming. Should be fun.

>>2582670
Nice, next step you'll make a shelf when you'll reach 3 layers of stuff
that VHF-UHF Swr meter is impressive, I need one in UHF but man, 500W, that's something rare.

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Just bought pic related on offer on AliExpress and I have no experience of amateur radio.
What is the total range of frequency on this? It’s dual band so does that mean it stretches from 30 to 30,000MHz?

>>2583084
Nice troll post but dual band just means 2m/70cm.

Newbie here. I just ordered a President Electronics McKinley radio and a PE Montana Up antenna for my vehicle. I can’t really find any information on the antenna however it is the longest magnetic mount antenna PE sells, does anyone know if this antenna will be satisfactory? I’m open to buying another antenna but it has to be magnetic mount.

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What's the absolute best kind of ham radio antenna for multi-band work in the HF bands? Bonus points for antennas that are under $1,000 and require minimal space and/or can be roof mounted.

Suppose I want to have a common source RF amplifier but instead of a resistor on the drain I have an inductor.
What's the best way to bias the gate? Usually I'd use self biasing but with the inductor I can't do that.

>>2583231
>Montana Up
It's a bit short, you can try a President MLA-145, it's a 5/8 lambda
https://president-electronics.com/Antennas/Magnetic/MLA-145

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>>2583242
>absolute best kind
I like your way of thinking.

>>2583231
I use a McKinley export with a Maryland antenna and have perfect SWR under all weather conditions, so probably.
My antenna isn't magnetic, however. I bolted on a Wilson 610 stud after my magnet mount got BTFO by a tree branch.

>>2581280
Thou need https://www.amazon.de/Bosch-Pro-Erdnageleintreiber-SDS-max-16/dp/B001419BNG/ to push it like in butter.
I sealed 6m of copper rod into the ground with this.

>>2583538
That's what I used.

>>2583251
Isn't BIAS just the DC portion? Couldn't you just use caps/inductors to block DC or AC?

You can size a cap to act like a AC resistor also.

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>trying to listen to shortwave
>there's an eletrical substation about 100 yards from my house
>There's a 1000w am tower 1200 feet in the other direction
Every shortwave band has hip hop in the background, on any band. It's all pervasive biggie over everything.

>>2584130
fuck... Well, you might be able to get something with a very very steep filter that cuts the AM broadcast station frequency

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>>2576235

>>2579647
just got my first sdr(or any form of radio at all) it's a trl-sdr v3. i set it up today and istalled sdr sharp. i managed to listen to normal radio stations and it felt pretty amasing. what should i do next? what else can i recive and what steps should i take in reciving those more interesting signals?

OH MY LORD LADS I JUST HEARD A PLANE. I HEARD A PLANE FROM MY DORM WITH A LITTLE CHEAP SDR I JUST GOT. I AM EXTAZIC! I LOVE THIS NOW

>>2584279
Welcome in the rabbit hole anon. Now with another SDR you get ADSB and not only do you listen to aircrafts and ATC but you also see where and who they are like you are the ATC

>>2584283
i have a question anon. why can i hear music from fm radio stations on way higher radio requencies?

>>2584254
How about weather satellite images? Check https://www.rtl-sdr.com/ for ideas.
https://www.rtl-sdr.com/tag/satellite-2/

>>2584289
image frequencies (mirror frequencies ? Sorry I don't know how it's named in english), the level of FM stations si so high they cause "duplicates" in the receiver, if yo udon't plan on listening to these, you can buy a FM filter that will lower the level of things between 87-108MHz so it doesn't pollute other bands

what would i need to do to be able to hear local police radio with my sdr?

>>2584302

Go over to radioreference and look up your area. If FM then you need nothing else. If it is a trunked system then 2 or more sdr dongles are needed. Checkout sdrtrunk.You're probably dealing with a trunked system and will be able to listen to dispatch and non-tactical channels. Basically, whatever you hear on a scanner app.

>>2584302
Which SDR do you have? The rtl-sdr is not sufficient to pick up nbfm signals, you need something capable of VHF reception to pick them up. I asked about this earlier in the thread.
t. tried using kiwiSDR for this purpose, 0-30mhz sdr like rtl-sdr and it didn't work
I'm not sure how people pick up airplane traffic on them like >>2584279

>>2584418
>I'm not sure how people pick up airplane traffic on them
it is in the range of RTL-SDR receiver, 108-140 MHz and it is AM.

>>2584421
So it is, not sure why I thought they were 0-30MHz, excuse me speaking on things I know nothing about

>>2584425
no problem anon, we are here to learn and share

>>2584418
KiwiSDR and RTL-SDR are different and receive different frequency bands.
https://www.rtl-sdr.com/about-rtl-sdr/

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>>2584138
I'm very new at this. I just have a shitty tecsun pl-310 and about 35 feet of cross connect wire from work strung out the window across my yard. I have one of picrel but I don't think I can use it because I don't have a ground.

>>2584602
>I don't have a ground
you don't need one to use a filter

>>2584603
The end of the wire I just have an alligator clip on, so I can't plug it in normally to the end. Do I just clip it to the outer threads?

>>2584605
I see, well you can try to insert it into the female part of the SMA connector or get a SMA male connector (not RP : reverse polarity, it is for wifi) and solder your antenna wire to the center pin and connect it to the filter then run a small coax to the receiver

>>2584606
Thanks, I'll try that. I'm thinking of re-running the wire anyway so I may try to make it better- Maybe make it a dipole.

>>2584617
a dipole isn't suited for wideband reception, it is centered around a specific frequency and really bad for everything else. You are better with a random length for receiving

>>2584618
Oh, well maybe I'll just leave it as is then. I have 24awg cross connect wire strung between a metal awning and my garage about 35', with wood blocks and jute rope to keep it away from the metal. The wire then runs through my window- the whole wire is insulated, but it does technically "touch" my metal siding/window screen/etc

My yard is very small, only really 45' by 25' in the back. I have it running from the window northeast to the corner of the shed. At most I could probably run it 70' from the front yard along the entire length of my property. Not sure what other styles of antenna could work though that maybe utilize more area than length.

>>2576657
is DX vertical polarity? I tried setting up a long wire horizontally but wasn't picking up shit

>>2584649
As soon as it bounces on something there isn't any polarity anymore, especially when it bounces on atmosphere layers

>>2584130
you definitely need a filter for AM/FM car radio, that shit is loud
even at -40dB, commercial radio will dwarf some of your signals (but at least it won't overload your receiver)

>>2584650
wait what? I thought reflections were inherently polarized

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Guys, what is this ?

>>2584418
>t. tried using kiwiSDR
I sadly read that Kiwi is out of stock. I feel lucky that some Anon here advised me to buy one, and despite the 600€ it costed, I had not hesitated and ordered one without any lag time process. It has since disappeared from the Swiss shop's inventory. I'll never thank Anon enough for his good advice.

I went for that antenna
https://hamradioshop.net/antennas/e-field-active-antennas/225/megactiv-ma305ft-active-antenna

http://kiwisdr.com/ks/compare.1.1.pdf

>>2584781
>Kiwi is out of stock
Apparently it won't be made again, for reasons the creator prefer not to go into.
The design is a few years old, presumably a new version could be made, with improved dynamic range and supporting more GPS bands. A Chinese clone (they always will exist) upped the design to 16 bits but bad design choices nullified the improved capacity of the ADC.

>>2584875
>reasons the creator prefer not to go into
he gave teasers to understand speaking about the semiconductor market since Plandemic, and the problem of counterfeited chips. And his position, a minor actor in terms of volume.
Suppose you buy a 1000 batch chips, which reveals being all fake and your business account is all strangled.

>The design is a few years old
The beagleboard itself is very old. It does the job but it seems limited compared to OrangePi & ODroid, rPI.
It's a one core 1Mhz ARM cpu. I wonder if it could be easily replaced

The kiwi hat itself is a great tool. And the software intelligence around makes it a great project.

>>2585132
>The beagleboard itself is very old. It does the job but it seems limited compared to OrangePi & ODroid, rPI.
There are great hopes for RPi-V.
>It's a one core 1Mhz ARM cpu. I wonder if it could be easily replaced
People have already used Beaglebone AI-64, which is fast and works great, though there is a danger if plugged in incorrectly. It has a beefy chip with the new C7xxx DSP but documentation is beyond sparse.
>The kiwi hat itself is a great tool. And the software intelligence around makes it a great project.
Agreed. And since it works it is sad that it is gone. TangerineSDR has a lot of talk and hot air with little to show for, but it indicates at least what more that could be done with a modernized platform.

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Imagine being a ham, hauling all your shit to a top 50 desires dx location, and not knowing how to work said equipment.

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explain this shit

>>2585209
It's a spark gap. Voltage to ground gets too high and it sparks.

>>2585209
in thunderstorm season I place neon lights across the terminals of all my antennas which are disconnected from any radios.

when lighting is really active the neon bulbs will flash periodically. this dissipates the charge on the wires.

>>2585209
It doesn't eliminate static electricity until it reaches hundreds of volts : it's not useful for taht.
But it is a surge protector.
To eliminate static electricity that builds up in the antenna, you need to put a coil between antenna and ground.
The coil conducts DC : static electricity but blocks AC : RF signal

>>2583360
Would the Wilson 1000 be a good enough substitute? It’s the same length and I can order it from Amazon now

>>2585321
If you are okay with the price, go for it !

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I'm a bored Extra and saw an add to get an FCC Commercial license.
Are there any avenues to explore for financial gain with all my ham knowledge going to waste playing an FT8 video game?

>>2585749
>I'm a bored Extra
If you can study hard enough for extra you should know how to do basic research. Also, there's way more to ham radio than fucking data modes, but try something new like slow scan.

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>>2585757
Ehh, I've been burned too many times to blindly jump into another certificate or training or _______ when it comes to commercial or 'education' without talking to someone who has gone through the process.
I do digital and ssb and am making progress on cw, armature radio boils down to (duh) communicating with armatures. Yes, I know about Winlink. In before do contest/dx. I have a DXCC Challenge.
Has anyone paired their ham brain with one of these licenses to make a respectable paycheck?

>>2585762
What the fuck do you want? Get into telecom or electrical. Or go become an air traffic controller. If you can drill holes, run wire and build antennas (maybe you can't) you should be able to set your mind to anything. Amateur extra is a fairly technical exam, so assuming you actually know what the fuck it involves and didn't just study for the test itself online (or worse, are full of shit) I think you can rub a few brain cells together to figure out what fields ham radio knowledge might bleed into.

>>2585762
>I do digital and ssb and am making progress on cw
How the fuck does an amateur extra have such limited experience with amateur radio by the way? I know techs with a month under their belt working all modes + 10m. It sounds like you don't know what you're talking about.

>>2585794
>How the fuck does an amateur extra have such limited experience with amateur radio
What are you talking about? I've done my share of DX and contesting and local stuff, plus Winlink and satellites and APRS.
It boils down to armatures talking to armatures regardless of mode.
I was thinking of getting into 2m EME, but it's time to re-evaluate. Instead of talking with hams, perhaps there's an avenue to turn the knowledge of the hobby into a paycheck.

>>2585797
>I've done my share of DX and contesting and local stuff
>plus Winlink
Data
>satellites
Fun when bored
>APRS
Lmfao you're kidding right?

It's all data. If you can work wsjt-x and fldigi you can do everything you just mentioned. It's just data, means nothing. It's no different than bragging about working d-star on a ht. Ft8 gets out far and is neat to work, but if all you're doing is working data modes then no shit you're fucking bored.

Go to trade school and learn telecom shit. I don't want you being an air traffic controller, might involve something other than data modes.

Are you allowed to talk to pilots if you have a license?

>>2585810
>are you allowed to tx within bands allocated to your license privileges
Yes
>do aircraft radios often have the capability to tx on basically any frequency
Yes
>can you talk to a pilot legally
If he's in your band privileges
>can you tx on air bands not allocated to hams without special licensing
No

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>>2585806
Kek. I saw an ad for pic related in a ham magazine and asked if anyone turned their ham hobby to a commercial success, but I've been reduced to a FT-8 retard not worthy of asking that question.

>>2585749 >>2585762
There is always military signal service.

>>2585835
I really appreciate the idea, but military is off the table at 36.
It seems most of the FCC licenses revolve around maritime work.
I think I see the flaw in my thinking; the kid behind the counter at the gun store doesn't have an FFL license. The business employing him has the FFL license.
As such, few if any at a (radio station | business | first responder communication king | etc.) need FCC related license. They work under the license of the business

>>2585810
Some parts of HAM bands are common with what an aircraft can and has the right to transmit on, I got a guy in a KC-135 over Poland once and heard a french pilot who has his own cargo aircraft, it's rare, but can happen

Can't you just put the radio in a car, ride somewhere and call every single pilot over your county a faggot? You don't need a license for that right?

>>2585955
FAA isn't like the FCC. They actively monitor and track their bands. Causing a disturbance will release the full force of the FAA and FBI looking at every single traffic cam, government, and business cam available with time logs with FAA real deal triangulation to determine who it was. Then they'll run the plate.
>so take the plate off, got it
Not so fast. They'll simply check local traffic cams to get an idea of where you live and where you launched from and check dmv records of where your car is registered to. It is somewhat of a slim chance you'll make it out clean.

Remember that a guy fucking with uscg from him home got >10 years without any identifying information (outside of what he pulled out of his ass) and was still caught.

>>2585965
Bro that's not me in the car.

And what if I'm not from the US?

>>2585972
>what if I'm not from the US?
Then who cares?

>>2581280
>>2581295
I still use PicSay Editor too. It hasn't been updated in a decade and works better than anything else on the market for what I need. *Tips fedora*

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New project antenna, got all the parts just need to do it my next days off.