Nicely explained, it's the first time I've heard some one talk effectively on the band scope and what can be ascertained from that data...
@Ranchhand323
4 жыл бұрын
💜 Kevin , this video is absolutely the most demonstrative , explanative , and informative video ever produced on this subject matter . The Amateur Radio operators of the World are very fortunate that you have chosen to be a teaching Extra , and not simply a holder of the privileges. 💜
@albert7ii
2 жыл бұрын
Well said !!! Could not agree more ! Albert EI7II
@SkyWire88
Жыл бұрын
Howard said it all. Thanks for the neat info--if only I can remember it when I purchase a rig with these features. Thanks Kevin. 73 and keep your coolie cool. // Earle
@ericmoeller3634
3 жыл бұрын
That spectrum scope that is on the sdr apps that's what made me want to get a sdr dongle and also the absurd amount of bands the receiver can receive
@stridermt2k
4 жыл бұрын
When I got back into the hobby about a year or so ago I bought an HF-capable SDR and jumped into building loop antennas (shortly after that I got my general and my extra) I'm pretty sure a couple of your videos helped me out too, Kevin! :) Seeing the entire band and the signals was an unexpected and welcome bit of insight into understanding so many details about bandwidth etc and how the bands are laid out. Great stuff thanks as always 73 de N2NLQ
@BrownCoatFan
4 жыл бұрын
Just passed my Technician and General tests, no callsign yet. Radio on the way. I found this very informative. So cool. Thank you!
@stridermt2k
4 жыл бұрын
Welcome to the hobby! Tech and General nice work!
@ftlaud911
4 жыл бұрын
Congrats!!! Welcome to the hobby. Build some antennas and have fun.
@mikesimpson6757
4 жыл бұрын
Great Job on the testing. I did the dame, passed my Tech and General in one sitting. I thought that was all I really needed but was so captivated what was on the bottom end of the 80 meter band that was off limits to me that I studied and got my Amateur Extra class as well. And now I am trying to work my way through learning CW. LOL
@astrorad2000
4 жыл бұрын
Excellent Kevin. You are a natural born teacher. It is a gift.
@hgw90026
4 жыл бұрын
Brovo. This is extremely informative and greatly appreciated. Thanks.
@notionocean
4 жыл бұрын
Victor Zue at MIT was well known in the speech science community for being able to read words directly from a spectrogram, just like you did with Morse Code. He even taught a class on it!
@Paddy_Roche
2 жыл бұрын
Another great video, fascinating insight as always.
@ronlewis6394
4 жыл бұрын
Very helpful. Just ordered a Yaesu 991a which has the bandscope/waterfall feature. I look forward to finding my first DX qso's real soon with the help of the waterfall. Have lots to learn about HF, SB, etc.
@forgetyourlife
4 жыл бұрын
If its not to late and the waterfall is what you really want to work with then the 7300 is the way to go. The 991a scope is an after thought, thus the "a"
@LeopoldVDH
4 жыл бұрын
Very informative thanks Kevin. Well presented
@claudem.p.7969
4 жыл бұрын
EXCELLENT. Claude VA2SOB
@USXPOP
4 жыл бұрын
Most excellent video. Very instructional. One could almost read the signal and not have to have audio - almost. Thanks for the explanation and taking the time to show it. Now, if I just had a radio with a scope... Keep them coming, this is an excellent use of KZitem and computers.
@captainwyattoutdoors1636
Жыл бұрын
I am so thrilled to have found this video! Thank you! It really helps to explain to us beginners what we are seeing as well as some the theory in practice. Keep it up!!!!!
@bartweiss9663
4 ай бұрын
Great video……thanks.
@tonbonthemon
Жыл бұрын
Thanks for this video! I got into shortwave radio by reading about cold war communications, and when I first saw the blue waterfall it was like I was looking at a deep sea of spy communications. Cool to know that those mysterious sounding noises/mysterious looking signals I would see are actually different modes of communication via radio, etc.
@4s6ryd
4 жыл бұрын
Kevin Thank you so much. Excellent and very informative video on the subject. Gave some insight on waterfall and spectrum scope which were taken for granted earlier. After watching your video, I will be looking at them differently 73
@southwestdesert9086
4 жыл бұрын
I enjoyed that immensely. Very useful information. Thanks for sharing.
@kevina876
4 жыл бұрын
Love the intro!!!
@DappledJoker
4 жыл бұрын
Fantastic! Thanks for the excellent breakdown on the different signals, especially the digital signals. The only radio I have with a waterfall/spectrum scope is my little Minion SDR (1" screen), and it's only 14khz wide. However, your information is very useful. I hope to have an IC-7300 soon.
@billedwards8598
4 жыл бұрын
Cool! Very interesting and informative! I've had my 7300 for almost a year and just learned more in five or so minutes than in the last year! Thank you Kevin. Bill AD8EY
@JohnHill-qo3hb
4 жыл бұрын
Excellent Kevin, thank you.
@wh00per--
4 жыл бұрын
Now I'd mostly be seeing (not only hearing) old men's health issues with greater clarity if I had the Icom. hehehe 73, VA3LPR
@loughkb
4 жыл бұрын
I know, right?! I tune across 75/80 meters and it's one conversation after another about what maladies they're dealing with. In person too. It almost seems like beyond the age of 60, the most popular topic of conversation is what the doctor found on the last visit. Either that or ranting about politics. There's still a few good conversations out there though. They're just a bit more rare.
@robertl.fallin7062
4 жыл бұрын
@@loughkb Sort of reminds me what a old truck driver told me about cb channel 19. He said you hear phd level smarts in law, medicine, marriage, child rearing and constitution law right there without having to pay for it!
@mwechtal
4 жыл бұрын
Medical problems, that's what we call an organ recital.😉
@juliocesarpereira4325
2 жыл бұрын
DRM, FT8, teletype, weatherfax, voice (am, ssb), music and cw. Another very useful video. Thanks a lot. 73 from PY5WHO.
@sincerelyyours7538
Жыл бұрын
Thanks Kevin. I know this video is three years old but I am just now setting up my 7300 for its first QSO and have a question that I hope you can help me solve. Forgive me if I don't word it correctly. I am occasionally seeing little "sprites" in my 40 meter spectrum scope that "skip" along from low end to high end in less than a second. They make a cute little "blipping" sound as they go by and they're quick and annoying and look a lot like electronic mosquitoes that flit by so fast you can't put put your finger on them or capture them in any way. What are they, and is there a way to filter them out? Thanks, and 73
@michaelschieder2521
2 жыл бұрын
Kevin, thank's a lot. For me as a newcomer to SDR, these explainations are extremly helpful! 👌For example how can I determine a probable type of modulation? A perfect answered question... I stop viewing at 5:09 because I go to bed soon today, but I will come back to continue!💤
@denelson83
3 жыл бұрын
I'd say the best signal to use to demonstrate AM on a waterfall display would be that of WWV. That wasn't WMVP Chicago you were picking up on 1 MHz, was it?
@joeredd3867
4 жыл бұрын
I enjoyed it. I learned a mode I was not sure what it was. The wide 256 channel. I worked with the 16 channel TTY in 1964 US Army. CX. Fascinating. //... Joe
@Aleziss
4 жыл бұрын
24:24 that is the most ridiculous thing about that youtube copyright BS... why is that snipped audio track would be targetted as a copyright strike ??? it sounds like s#!t, in mono, it's a minuscule part of the whole song and still it could be a copyright strike... you are making revenue on the content and example you provide, not the actual badly recoreded souding crap song that is playing...
@bennettsjb
4 жыл бұрын
Great explanation! Thank you! 73 DE KD9NBF
@alaricsnellpym
4 жыл бұрын
This is a helpful video. It's a bit spammy making a comment just saying that - I'd clicked "Like" already - but KZitem rewards videos that get lots of comments, so I'm doing this for Kevin's income and so that this video gets recommended to more people who'll benefit from it!
@christianmiller1723
3 жыл бұрын
I'm afraid you've mistaken Digital Radio Mondiale for the Pluto II Over the Horizon radar. Not to be pedantic, just pointing it out. They are very similar looking.
@tomsherwood4650
4 жыл бұрын
You will learn to spot the frequency hogs, running an amp and lousy rig with wide shoulders that bleed over several KHz beyond what a nice sharp clean signal does. Then the guys that want to be broadcasters with SSB signals at least 4 KHz wide. Sometimes old vintage rigs are wide and sloppy too. IF you look at a properly run IC 7300 and others, the edges of the signal will be defined and steep.
@joerogers4227
3 жыл бұрын
Thnaks from Chino Valley, AZ, on m6 7610 I have the filter set to 2.4 khz wide. and use the twin band pass to narrow that down a bit. This allows me to filter out nearby signals.
@mewintle
8 ай бұрын
Fantastic! I had a hard time finding a guide to distinguishing different modes visually. This helps a lot. I’d love to see how to differentiate the other digital modes.
@saulbro
4 жыл бұрын
FYI: 21min+ in, it's "Digital Radio Mondiale"(last word is French). Mondale is former Minnesota Senator and VP candidate,
@VK9TOM
4 жыл бұрын
Yes they are a useful tool but you should still call CQ 73s Tom Vk3ftom
@Steve-GM0HUU
4 жыл бұрын
Good point I think Tom. This is perhaps one problem with modern transceivers and their waterfall displays plus all sorts of cluster sites. The temptation for hams is to spend lots of time looking for signals or a CQ and not calling CQ. I do suspect these days that you hear fewer stations calling CQ. Taken to the extreme, everyone might be listening and the band appears dead when it's open!
@steveoshaughnessy3736
4 жыл бұрын
Very informative Kevin. But, come on man, that AM signal at 19:45 in the video, 10MHz, was WWV, the time station.
@CodeMasseur
4 жыл бұрын
At 24:31 Thumbs up for the Greatest American Hero theme song! :-) Loved watching that as a kid!
@johnr8944
4 жыл бұрын
Kevin, Thanks for the very informative explanation of signals on band scopes. I've been thinking of requesting the same. Please stay safe!
@klrscout
3 жыл бұрын
Man, if I have a Linux/radio question, Kevin has an answer, likely already in the back-catalog.
@bermudezhg
4 жыл бұрын
Mysterious Waterfall images of transmissions, can be id using.. www.sigidwiki.com/wiki/Signal_Identification_Guide Where images and sound are provided..... so you know how over the horizon radar looks like and the rest of the utilities present.
@joerogers4227
3 жыл бұрын
The orginal band width of telepone circuits were from 300 Hz to 3000 Hz. Set before the days of hi-fi.
@seanclowry9820
2 жыл бұрын
Thank you! Now I know how to identify RF Waterfall signals.
@jeremycole3008
3 жыл бұрын
Very nice explanation. N9IZX Canton IL 73
@JimN5QL
4 жыл бұрын
Fantastic presentation Kevin! I have been watching a lot of videos on the Icom 7300 Because by the end of the month I will order one for myself. So I find this video very interesting and educational. Thanks much! 73
@swflKVNC
4 жыл бұрын
Kevin, thank you. Great scope info.
@BarefootBeekeeper
4 жыл бұрын
Excellent explanation, thanks Kevin!
@zazugee
Жыл бұрын
thanks, enjoying your videos from sahara desert
@malverninuk
2 жыл бұрын
Would be nice to have description of other digital signals.
@twohandsandaradio
4 жыл бұрын
THe most comprehensive, thorough, useful explaination of the bandscope I have seen. Well done Sir!
@JA-fy1bn
4 жыл бұрын
Very useful video. Thanks!
@slimygreen1967
3 жыл бұрын
Nice. I was wondering where the name 'panadapter' came from.
@rtgideon
4 жыл бұрын
Great information here on the Spectrum Scope Kevin, this will help a lot of new hams in the hobby of ham radio! Randy. KN6BZG
@1crazynordlander
4 жыл бұрын
Back again. What are the sweeps you see across the band. Some go from left to right fast and others will stop and squiggle around then scoot off the band. I hope you can understand my slang.
@tomsherwood4650
4 жыл бұрын
One of those dang government propagation sounders. Sweep all over the HF band usually low to high to test propagation
@machoneboard
2 жыл бұрын
This is an excellent video. Thank you.
@James_Bowie
4 жыл бұрын
👍 Excellent presentation. I hope the splatterer gets to see this, too. (And on the subject of splatterers, it would be a hoot to look the signals on 11 meters.)
@stridermt2k
4 жыл бұрын
I have done so and it's not as bad as you would imagine. It may be different in other areas, but when I tuned there I saw some pretty regular-looking AM signals.
@James_Bowie
4 жыл бұрын
@@stridermt2k I'm thinking about some of those multi-kilowatt cowboys on Channel 6 (aka the superbowl).
@paulkazjack
Жыл бұрын
This video has some misleading information.
@mikegingerich5184
4 жыл бұрын
This was super informative. Thank you.
@waltbury
4 жыл бұрын
This video was one of best explanation of the waterfall matrix on your radio
@tahoma6889
4 жыл бұрын
I appreciate your work, Kevin. I will be hosting your videos on N0rthwestradio. Unless you object, of course.
@loughkb
4 жыл бұрын
They're public, share away. Thanks!
@joerogers4227
3 жыл бұрын
the standard for am broadcast went to 5000 hz.
@TheRetiredtech
4 жыл бұрын
And if you complain about the splatter they will tell you that you need a better receiver.😄
@gotman4409
3 жыл бұрын
Hello my fellow American. 👍👍
@FStewartIII
4 жыл бұрын
Thank you very much for this
@kb3svj
4 жыл бұрын
That was a very informative video. At about the 26:27 mark where you showed the one operator splattering, what could he have done on his end to narrow his signal? Is it a Mic gain issue?
@wh00per--
4 жыл бұрын
Simply speaking away from the mike will help with distortion. Or turning down the volume. The amplifier produces more power than its rated (sine wave) output when it is clipping.
@loughkb
4 жыл бұрын
Likely one of three things. Mic gain too high, compressor on or too high, or a bit of RF in the shack getting back into his audio chain. Watch your ALC meter. If it's swinging high, you're over-driving the audio.
@kb3svj
4 жыл бұрын
@@loughkb : Thanks. I was going to ask if the ALC meter could be used as one would utilize when setting up for digital modes.
@seanperault646
4 жыл бұрын
Very nicely explained.
@kln8128
4 жыл бұрын
Very well done..thank you
@koldark
4 жыл бұрын
OMG! I loved this video. I'm hoping to get a 7300 soon and was going to figure out to read the scope and how someone said there's FT8, there's CW, etc. Now I see it! I'm saving this video until go I get my radio then rewatch and look for the stuff. That you show here. I did similar things when looking and weather radar. It's so helpful. Thank you!
@wh00per--
4 жыл бұрын
Mike, you might try using a SDR (software defined radio) USB dongle (cheap from nooelec or more expensive from sdrplay) and your computer, before you buy a 7300. Not that I don't want you to have one.
@koldark
4 жыл бұрын
@@wh00per-- I have one, but not a great HF antenna to get those signals, just those that it comes with. I am collecting the rest of the parts I need to make an EFHW antenna. I think I'll make it the 80m version so I can play in most bands once I get a radio. I'll first hook it up to my SDR first to start playing around.
@wh00per--
4 жыл бұрын
@@koldark Kevin had a video on End Fed Half Wave (kzitem.info/news/bejne/roGLwKd5cnSLoI4) Mouser.com has usually cheap toroids of 43 material for the unun. For low wattage you can use those with 31mm diameter (Mouser #:623-5943001701). They still have some on stock.
@davidsradioroom9678
4 жыл бұрын
Wow, that was a really cool video! Thanks!
@SkyWire88
4 жыл бұрын
Nicely done, sir. You have a future in teaching if you so desire. Do they have or sell those scopes for older radios as an add-on feature?
@loughkb
4 жыл бұрын
There are commercial pan-adapters available, usually expensive. One cheaper option is to use one of those simple USB SDR receivers. Tap the first I.F. stage in your radio and bring it's signal out to a connector on the back. Then connect that to the SDR and tune it to your I.F. frequency. Instant pan-adapter.
@kishor_VU2MZT
2 жыл бұрын
GREAT INFO ,THANKS
@mononcyoyo
7 ай бұрын
Kevin, can you explain me what are the dead carriers (or birdies) that are equidistant throughout HF bands, I particularly see them when I watch a 1MHz scope bandwith, when the band is closed and the noise floor is low. I see equidistant lines in the waterfall.
@loughkb
7 ай бұрын
Some local noise source. Switching power supplies are the most common culprits. Those little wall warts that people plug in to charge their devices and run little items with often are producers of such noise. Ethernet networking can do it as well. What you can do is run your radio off a battery, go to your electrical panel and switch off all the breakers. If the noise goes away, switch the breakers on one of the time until the noise comes back then you know what circuit to look at to find the culprit.
@davidmauldin6615
4 жыл бұрын
Well done on your video Kevin!
@keesvanoosbree5911
4 жыл бұрын
Wait, with your 7300, can you transmit through all of shortwave? I am wondering this because your TX light on your screen isn't dotted when you go out of your ham band. My 7300 does. How do you do that? 73 de W0AAE
@forgetyourlife
4 жыл бұрын
ha ha, modded.
@1crazynordlander
4 жыл бұрын
Isn't Audacity Great? Thanks for sharing! How did you get the pointer to the side of the SSB signal and not the middle of it? Also do you remember when AM stations broadcast in stereo? I had a radio that did AM stereo. I twas more enjoyable to listen to an AM stereo broadcast. It sounded better as far as I was concerned. I am guessing they split the channels right/left on either side of the AM carrier. I might be wrong...I said guessing.
@straightpride451
4 жыл бұрын
Good job widdle guy!
@jps99
Жыл бұрын
very interesting!
@indridcold8433
4 жыл бұрын
I am extremely thankful for the cheap, off-brand, SDR adapters that can be had for less than a tank of fuel. They make for excellent band scopes with nothing but a USB adapter, an antique television antenna on the roof, and a cheap piece of coaxial cable. The entire radio frequency spectrum is mine from 100 kilocycles to 2.4 gigacycles, in all modes. I am heavily addicted to monitoring all the bands at my disposal. It can clearly be seen what kind of signal one is looking at on the band scope. FM, AM, USB, LSB, DSB, CW, and digital signals all have a distinctive look to them. One can even make out Subaudible tones and data over analogue signals. I may have no license, but that does not stop me from enjoying the radio frequency universe at my fingertips.
@jharding32
7 ай бұрын
Very interesting!
@AlvinMcManus
12 күн бұрын
Great video thanks. Now all I need is to see one on the noise that I see.
@loughkb
12 күн бұрын
Most common local noise sources are switching power supplies. Like those little wall transformers that will plug in to charge devices. If your noise is local, put your radio on a battery and turn off your breakers in the house. If the noise goes away, turn them on one at a time until the noise comes back and then you know which circuit to look at to find the noise source.
@janhenkins
4 жыл бұрын
Thanks Kevin, this was awesome! I thought I new everything about band-scopes, but I learned a ton! Please keep it up!
@samuel.soderberg
4 жыл бұрын
This was gold! Very informative, thank you!
@paulhastings3109
4 жыл бұрын
You're a blessing, The last radio I had was FT 890. In getting back in the radio yen and I could never understand the waterfall now it makes more sense. I wanna put up a loop I don't know if I wanna go with 75 m or 40 height wise I get about maybe 40 ft. The rig is FTDX 1200 a proper should have got the 1300 because of the Data. I have been following you for some time where I usually don't make any comments. Thanks 73 KQ4CD
@danwiebe7146
4 жыл бұрын
You're kind of confusing the time domain with the frequency domain, but it's still useful information. Thanks. Don't most transmission circuits filter phone to about 300Hz to 3kHz? I know telephones do. That's 2.7kHz bandwidth, not 2.3kHz bandwidth, but I think it's something like that. Can you use Audacity to lop off the low and high ends of that spectrum and re-render it in the time domain?
@Steve-GM0HUU
4 жыл бұрын
Maybe worth adding that, if you have a receiver/transceiver without a waterfall, one option may be to attach a relatively inexpensive SDR receiver "dongle" to a USB port on your PC. The SDR receiver antenna connection then goes to your receiver IF (You may not even have to open up you receiver/transceiver to do this if it already has an "IF out" on the back). This allows you to view a waterfall display on your PC - which can be considerably larger than the one one on modern transceivers.
@Steve-GM0HUU
4 жыл бұрын
Good video Kevin thanks. First time I used a modern SDR receiver with a panfall display, I was sold. Instead of listening to the band, you can actually see the band. I think it makes for a huge improvement when operating a receiver or transceiver. At a glance, you can get an idea what's going on across a band in terms of signals and noise, spot a signal of interest further up/down when listening to another signal, see QRN rolling up/down the band before it hits you. On TX, the panfall gives an indication of the quality of transmission and allows you to set TX passband, drive level and equalisation. The list goes on. It's like sliced bread - you don't really need but you certainly miss it once you've tried it :-)
@rjinnh3933
4 жыл бұрын
Very intresting Kevin. You added alot to what I knew on this subject. I'm getting very serious about purchasing a 7300. You demonstrating its scope certainly adds to my interest. Real good video..... 73 OM
@NamasenITN
4 жыл бұрын
Excellent intuitive explanation of time and frequency domains! Too bad you did not explain the (Fast) Fourier Transform too. It would have been an excellent explanation.
@salat
4 жыл бұрын
Nice video,! But Audacity can't show the frequency domain like e.g. "baudline" - maybe have a look :)
@celticwarrior1961
4 жыл бұрын
there is/was a program called " artemis" from markslab but i'm not sure if its still available that showed you what a signal looked like and gave a discription of it and in most cases a small sample of how it sounded .there were other parts in there aswell like band activity and the like all very useful kzitem.info/news/bejne/uZqJxauwpZh0dqg
@carln6ckv8
4 жыл бұрын
Thanks for the video If you see a horizontal line across the whole scope display you have seen a lighting strike.
@mikesimpson6757
4 жыл бұрын
Great video. How about a video on detecting and eliminating RF signals in your home?
@michaelmihailovic3392
4 жыл бұрын
Thank You Kevin for the lesson on these band scopes very well explained easy to follow and made me aware of capabilities of these devices.
@glenmartin2437
4 жыл бұрын
Thank you, I learned a few things. N0QFT
@ansientwun
4 жыл бұрын
Many accolades below say it all. A doctorate level course on the scope. Thanks a bunch Kevin.
@robertl.fallin7062
4 жыл бұрын
I found Wikipedia a great source for the identification of signals including digital.
@dennisthrush2835
4 жыл бұрын
Is there a way to look at your own signal to verify if your signal isn't splashing?
@wh00per--
4 жыл бұрын
try using webSDR sites, where you can listen to the frequencies you transmit on. Any receiver close to your antenna will be overloaded, causing interference or even suppression of the normal received signal. A spectrum analyzer on an attenuated tap of your output might show something. Use the free/cheap options first :)
@loughkb
4 жыл бұрын
Another receiver with a dummy load on it's antenna connector could be used as a 'monitor' receiver. Just being close in proximity, it should pick up your transmitted signal very well.
@tomsherwood4650
4 жыл бұрын
7300 shows a waterfall display of your signal on the screen in transmit. If it is true to life, you can see how clean you are going out. I think you would really have to mess up to make the Icom not put out a good signal.
@loctite222ms
4 жыл бұрын
I would have liked to see more of the various digital signals.
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