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The Ionosphere Part 2
The ionosphere makes up less than 1% of the mass of Earth’s atmosphere above 100km. It’s the part of our atmosphere that affects the passage of radio waves. But how? Ionised Oxygen atoms are the key to radio propagation and good DX. EUV and activity from our sun affect the MUF and LUF.
The inspiration for this video came from "Ionospheric Radio" by Kenneth Davies, an up-to-date survey of the theory and practice of radio wave propagation involving transmission through and reflection from the ionosphere. Kenneth Davies is a senior research scientist at the Space Environment Laboratory in Colorado.
www.google.com.au/books/edition/Ionospheric_Radio/qdWUKSj5PCcC?hl=en
Find out more about this video at bit.ly/4c9FZ21
View "The Ionosphere" part one at bit.ly/4eogH2s
00:18 | Where is the Ionosphere?
01:02 | What is Ionisation?
01:24 | 02 is a molecule made of 2 oxygen atoms covalently bonded together
02:13 | Oxygen atom behaviour when exposed to Extreme Ultraviolet radiation
03:17 | What do free electrons mean for amateur radio?
02:36 | Lifetime of free electrons
03:47 | Example of band conditions on 14MHz with Peter VK3YE portable
04:32 | Bands where the ionosphere has the most effect
04:55 | Characteristics of ionospheric propagation and example
05:20 | 10m propagation example and conclusion
05:39 | What type of radiation affects what region in the ionosphere
05:55 | The mathematical theory behind radio propagation
06:18 | The F2 layer
06:50 | The radio spectrum and 8 bands interact with the ionosphere
08:56 | QRP on 14 MHz with Peter VK3YE portable
09:26 | The 2 sources of ionising radiation - short and long term
10:11 | 3 atmospheric parameters
10:32 | MUF and LUF - The critical atmospheric parameters
11:04 | The usage frequency window for propagation
10:25 | Ionospheric Irregularities
มุมมอง: 1 606

วีดีโอ

The Ionosphere
มุมมอง 4.5K3 หลายเดือนก่อน
The ionosphere is the ionized part of Earth’s upper atmosphere that extends from about 80 to 600 km above sea level. It’s a region within the thermosphere filled with charged particles that play a crucial role in radio communication by reflecting radio waves back to Earth. It also contributes to auroras and is ionized by solar radiation. This video briefly overviews the 3 regions of the Ionosph...
MADs
มุมมอง 9543 หลายเดือนก่อน
Every so often here in Victoria (VK3) we have Microwave Activity Days otherwise known as MADs. These usually ad-hoc, but sometimes planned events, are where amateur radio operators passionate about microwave communications find themselves on hilltops working other like-minded amateurs. It’s an event where microwave enthusiasts can put their gear through its paces. This video will give you an in...
How to update the Icom IC 905 Firmware
มุมมอง 3943 หลายเดือนก่อน
Updating the firmware of any radio keeps it running at its best and the IC-905 is no different. New features as well as engineering tweaks are added regularly, especially in radios that are new to the market. This video will show you how easy it is to update the firmware in your radio. You’ll need a micro SD card formatted in the 905 to copy the new firmware to. For context this video is part o...
Amateur Microwave It's easier than you think 2024
มุมมอง 5K7 หลายเดือนก่อน
This is the 2024 update of "Amateur Microwave It's easier than you think" Since the first edition of this video, Icom has released the IC-905 SHF transceiver. This has added a level of simplicity for those keen to get on the higher bands. It's now included in this video along with new portable operations. Microwaves are the highest frequency radio bands in Amature Radio. It's the final frontier...
BARG Hamfest 2024
มุมมอง 1.3K7 หลายเดือนก่อน
On Sunday, February 4 2024, the Ballarat Amateur Radio Group hosted one of the best Hamfests I’ve been to in years. It was hot, but that didn’t deter hundreds of amateurs from far and wide making the pilgrimage to the central Victorian town of Ballarat. Here are some highlights of the day including a look at Icom's IC-905 24GHz concept model, Ian VK5ZD's 122GHz transceiver, and a host of local ...
M5 Stack - Icom IC-705 DX Tracker & Metering Radio Apps
มุมมอง 2K11 หลายเดือนก่อน
The M5 stack is a series of modular and stackable development kits designed for rapid prototyping and development of internet projects. There's so much more to the M5 stack than in this video, but here are Armel, F4HWN applications for the M5 stack including a DX tracker and metering for the Icom IC-705, 7300, and 9700, - even a keyer. More at bit.ly/3PGpXVq #m5stack #ic-705 #icom
10w power amp for 5.7 GHz 6cm amateur band
มุมมอง 2.1Kปีที่แล้ว
Getting more than 250mW on the 6cm microwave band was an onerous task up until recently. SG Laboratory has produced a 5.7 GHz 10w PA. This amplifier has been developed and produced for industrial use but is matched well for the 6cm amateur band. It is based on the latest GaN power transistor from Cree/Wolfspeed. There is no switching around the amp, so it's something you'll have to do should yo...
Before you begin your adventure in microwave
มุมมอง 617ปีที่แล้ว
So, something’s piqued your interest in microwave. Whether it's the IC-905 or something else, operating the higher frequencies is a lot of fun. Not only will you learn new skills, chances are you’ll meet a new cohort of operators, but it’s not all beer and Skittles. This short video is a preamble to this aspect of our hobby. Before you spend your hard-earned cash, it pays to do your research. T...
Before you begin your adventure in microwave
มุมมอง 2.5Kปีที่แล้ว
So, something’s piqued your interest in microwave. Whether it's the IC-905 or something else, operating the higher frequencies is a lot of fun. Not only will you learn new skills, chances are you’ll meet a new cohort of operators, but it’s not all beer and Skittles. This short video is a preamble to this aspect of our hobby. Before you spend your hard-earned cash, it pays to do your research. T...
HamAlert - Real-time DX notifications on your device
มุมมอง 777ปีที่แล้ว
If you’ve ever been hunting that elusive DX and wish you’d get a notification on your phone or tablet when the bands are open?… then HamAlert is what you’ve been waiting for! More at bit.ly/3HJoo3Z 00:00 | Intro 00:16 | What is HamAlert 00:50 | HamAlert setup 01:42 | Where to get HamAlert
Sporadic E Propagation in 2 minutes
มุมมอง 3.2Kปีที่แล้ว
And now for something different - Sporadic E propagation in 2 minutes (ish). If the comments are encouraging, there'll be more 2 minute-ish videos! Feel free to suggest topics. Sporadic E propagation is a type of radio wave propagation that occurs in the E layer of the ionosphere. The E layer extends from about 90-120km above the earth’s surface. Here's how it works More at bit.ly/3Ymaxao 00:00...
Getting on the 6cm microwave band
มุมมอง 2.4K2 ปีที่แล้ว
Looking at getting onto the microwave bands? Here's one way. The 6cm or 5.7 GHz amateur radio band is accessible to standard and advanced licensees in Australia. It’s the higher of the two WiFi bands that doesn’t seem to suffer the noise problem like its poor 2.4 GHz or 13cm cousin. Antennas are cheap and readily available in the form of dishes and panels. So if you’re keen to dip your toe into...
12v shack backup - choose quality powergates over junk
มุมมอง 6292 ปีที่แล้ว
Power backup comes at a price. Choosing quality over junk. Power gates, power paths, power plus, power mini, there are so many names for devices that switch to a battery for power when your mains supply fails. These devices are suited to both shack and portable use. Some have solar panel inputs without the need for solar regulators as it's all built-in. Choosing quality power switching over jun...
10 GHz portable over 150 km in VK3
มุมมอง 1.9K2 ปีที่แล้ว
10 GHz portable over 150 km in VK3
What exactly are the key Solar Indicies?
มุมมอง 1.5K2 ปีที่แล้ว
What exactly are the key Solar Indicies?
Solar Termination Events
มุมมอง 8122 ปีที่แล้ว
Solar Termination Events
How to program the SG Laboratory 13cm transverter Local Oscillator
มุมมอง 1.9K2 ปีที่แล้ว
How to program the SG Laboratory 13cm transverter Local Oscillator
How to make and set the opening picture on the IC-705
มุมมอง 1.1K2 ปีที่แล้ว
How to make and set the opening picture on the IC-705
1296 on the Icom IC-705
มุมมอง 8K2 ปีที่แล้ว
1296 on the Icom IC-705
Amateur Microwave - It's easier than you think!
มุมมอง 12K3 ปีที่แล้ว
Amateur Microwave - It's easier than you think!
Local Radio Interference
มุมมอง 8533 ปีที่แล้ว
Local Radio Interference
IC-7300 Unbox and Firmware update
มุมมอง 8643 ปีที่แล้ว
IC-7300 Unbox and Firmware update
IC-705 Access Point or Station - which WiFi to use?
มุมมอง 7K3 ปีที่แล้ว
IC-705 Access Point or Station - which WiFi to use?
Port Forwarding for Icom Radios
มุมมอง 4.7K3 ปีที่แล้ว
Port Forwarding for Icom Radios
How to set the clock on your laptop using the IC-705's built in GPS
มุมมอง 2.9K3 ปีที่แล้ว
How to set the clock on your laptop using the IC-705's built in GPS
Operating WSJT-X wirelessly on the IC-705 with wfview
มุมมอง 25K3 ปีที่แล้ว
Operating WSJT-X wirelessly on the IC-705 with wfview
A Guide to Digital Voice on Amateur Radio
มุมมอง 1.1K3 ปีที่แล้ว
A Guide to Digital Voice on Amateur Radio
WSJT-X and GridTracker NIGHT SCREENS setup
มุมมอง 5K3 ปีที่แล้ว
WSJT-X and GridTracker NIGHT SCREENS setup
Autumnal Propagation in Southern Australia
มุมมอง 3493 ปีที่แล้ว
Autumnal Propagation in Southern Australia

ความคิดเห็น

  • @MstAma-t7g
    @MstAma-t7g 3 วันที่ผ่านมา

    Allen Gary Lopez Betty Thompson Scott

  • @LeslieDicker-r8n
    @LeslieDicker-r8n 7 วันที่ผ่านมา

    G'day Chris, your talk went well, it helps me to look at those names a little easier, I'll try doing some for myself. Thankfully there weren't any suffix pronouns! 🙂 Regards from Down Under. Les Dicker.

  • @synonyx
    @synonyx 15 วันที่ผ่านมา

    Awesome video! Great production quality. Kicker is here in the states, microwave has failed to take off. I've been a ham for 12+ years and I fail to see the appeal of microwave for here in the states. I say that as someone who has microwave engineering experience building links for businesses.

  • @doccpu7
    @doccpu7 27 วันที่ผ่านมา

    Where are these available from?

    • @VK3FS
      @VK3FS 23 วันที่ผ่านมา

      www.sg-lab.com/TR1300/tr1300.html via email

  • @BrianVA6BAX
    @BrianVA6BAX 29 วันที่ผ่านมา

    Thank you for making this! 73

    • @VK3FS
      @VK3FS 23 วันที่ผ่านมา

      No worries!

  • @fotografm
    @fotografm หลายเดือนก่อน

    Nice build. How did you fix the transverter to the inside of the diecast box ?

    • @VK3FS
      @VK3FS 23 วันที่ผ่านมา

      Lucky it just fits with a little bit of room for the connectors

  • @FuckALLauthorities
    @FuckALLauthorities หลายเดือนก่อน

    An ATMOSPHERE NEXT to a VACUUM without a physical barrier, hilarious and delusional 🤪🤣

  • @joekrepps
    @joekrepps หลายเดือนก่อน

    I think I just found my new favorite TH-cam channel! Just enjoyed your video on the layers but was a little sad that my only VHF/UHF radio is a 817ND. Looks like I’m closer to dabbling in microwaves than I thought. Very grateful!! 73’s WB3CFN/m (76/100 towards Mobile DXCC)

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Awesome! Thank you!

  • @joekrepps
    @joekrepps หลายเดือนก่อน

    Excellent!! Best explanation of the layers that I’ve ever seen! I’m a HF guy but this inspires me to look at VHF/UHF a little more. 73’s WB3CFN/m

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Awesome, thank you!

  • @charleswoods2996
    @charleswoods2996 หลายเดือนก่อน

    Great video! Intellectually stimulating and educational. Liked and Subbed just now 5:18 pm, 8/6/2024 KD8EFQ/73

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Thanks Charles. 😊

    • @FuckALLauthorities
      @FuckALLauthorities หลายเดือนก่อน

      ​@@VK3FS🤣🤣🤣🤣🤣🐑🐑🐑🐑🤣🤣🤣🤣

  • @VK5IR
    @VK5IR หลายเดือนก่อน

    Great video!

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Glad you enjoyed it

  • @7z1sj
    @7z1sj หลายเดือนก่อน

    Andrew Excellent video 73s 7Z1SJ

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Thanks Sybrand 😊

  • @davidcureton9258
    @davidcureton9258 หลายเดือนก่อน

    What fantastic production quality, this will make a great educational resource.

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Thanks David. 😊

  • @vk3hau
    @vk3hau หลายเดือนก่อน

    Arr, you found Peter in his natural habitant…😂😂

  • @W6IWN_Radio
    @W6IWN_Radio หลายเดือนก่อน

    👍 Thanks for taking the time to make this video! Excellent work 👏

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Thanks Robert. 😊

  • @luciandamian5955
    @luciandamian5955 หลายเดือนก่อน

    Nice video! 73 de YO8SSB!

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Thank you. 😊

  • @prabhakarv4193
    @prabhakarv4193 หลายเดือนก่อน

    Very nice

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Thanks

  • @vk2sky
    @vk2sky หลายเดือนก่อน

    Excellent video as usual Andrew. I wish all Amateur videos were of such quality.

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Thanks Richard.They're a lot of fun to make. I do learn a lot when making these. This one took a good 6 weeks. Lucky it's too cold to go out and play radio in VK3 at the moment.

  • @nikpresservk3ba779
    @nikpresservk3ba779 หลายเดือนก่อน

    Another slick production, Andrew. An excellent explanation 🙂

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Thank you Nik 😉

  • @nikpresservk3ba779
    @nikpresservk3ba779 หลายเดือนก่อน

    Amateur Radio video of the year award for 2024 goes to this video right here... 🙂

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Thanks Nik. Cheque's in the mail... or whatever we use these days 😉

  • @DoronTirkel
    @DoronTirkel หลายเดือนก่อน

    Thank you, Andrew, for your excellent explanations.🙏 de 4x4XM

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Thanks Doron. Part two will be published on TH-cam next month. It goes into detail about ionisation of oxygen atoms. 😉

  • @fotografm
    @fotografm หลายเดือนก่อน

    Looks great. Are they still available to buy ?

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      They sure are.

  • @K7LZZ
    @K7LZZ 2 หลายเดือนก่อน

    These videos kick a$$. Great stuff

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Thanks. Part 2 is nearly done.

  • @billjobes1851
    @billjobes1851 2 หลายเดือนก่อน

    The music is way too loud, and an unnecessary distraction.

  • @PeterStaniforth
    @PeterStaniforth 2 หลายเดือนก่อน

    Back in the 1980's I used to listen to NFL games on the U.S. Armed forces network with my radio in the U.K. I'd get the early game in, but at around 21:15 the signal would get weaker and weaker until all you could hear was static. I never knew why. . . Now I know! Thanks!!

  • @KN7U
    @KN7U 2 หลายเดือนก่อน

    Is it possible to set the PC time using the IC-705's GPS in this configuration? I can use a GPS dongle but would like to use the 705. Thanks!

    • @VK3FS
      @VK3FS 2 หลายเดือนก่อน

      There have been a few version updates since making this video so it may be possible but I can't say.

  • @cinescopefilms
    @cinescopefilms 2 หลายเดือนก่อน

    73's DE NP3OJ

  • @KoRntech
    @KoRntech 2 หลายเดือนก่อน

    8:15 with regards to the meteorite debris clustering in the upper atmosphere, something like the aurora, our magnetic field concentrates Solar material in the exosphere, who not a similar phenomena with tiny fragments of iron caught up in the upper level winds and heat energy from the surface to act like a reflective cloud held up over a region? I have to imagine it was am exciting time to be a ham in the 50's and 60s when the military was releasing materials in the sky to see what the effects were.

  • @KoRntech
    @KoRntech 2 หลายเดือนก่อน

    8:00 that would explain why we have this in the summer over the Plains to Atlantic states in spring and summer, with occasional instances over winter where warm gulf air intrudes north.

  • @simonwoolley592
    @simonwoolley592 2 หลายเดือนก่อน

    Great work on this subject.

    • @VK3FS
      @VK3FS หลายเดือนก่อน

      Thank you!

  • @colourist.
    @colourist. 2 หลายเดือนก่อน

    Great work sir! .... best for G land de M0VFX

  • @tomiphakala
    @tomiphakala 2 หลายเดือนก่อน

    Incredible video production, footage is on par with BBC nature documents. Content was also very helpful, I was able to get GPS sync to work with my PC.

  • @LeonelLimon-nj7tu
    @LeonelLimon-nj7tu 3 หลายเดือนก่อน

    Radiogenic Chemistry is a game changer.

  • @jetwrench2854
    @jetwrench2854 3 หลายเดือนก่อน

    Impressive and educational! From a lil ole GROL. You have a new "student" sir. 😊

  • @ve2zdx
    @ve2zdx 3 หลายเดือนก่อน

    Saved to favorites. 73!

  • @ozriblit
    @ozriblit 3 หลายเดือนก่อน

    Good video and explanation

    • @VK3FS
      @VK3FS 3 หลายเดือนก่อน

      Thank you!

  • @stuartstuart70
    @stuartstuart70 3 หลายเดือนก่อน

    A very well produced video. Quite slick. Well done. 73, Stuart VK3SKS.

    • @VK3FS
      @VK3FS 3 หลายเดือนก่อน

      Thanks Stuart. 😊

  • @MickDownUnder
    @MickDownUnder 3 หลายเดือนก่อน

    The voice over work gives me the Beyond 2000 Simon Reeve vibe. Smashing job mate.

    • @VK3FS
      @VK3FS 3 หลายเดือนก่อน

      My best ABC voice. 20 years of practice 😉 Thanks.

  • @MirlitronOne
    @MirlitronOne 3 หลายเดือนก่อน

    FYI Appleton knew the "E" layer as the Heaviside-Kennelly layer, predicted many years before. His experiments in radio wave reflection detected three layers, which he identified as D, E and F in order to allow for the possibility that there might one day be layers detected lower than the D layer. No such layers have been found.

    • @VK3FS
      @VK3FS 3 หลายเดือนก่อน

      Another gem. Thanks for sharing.

  • @petercallingham5657
    @petercallingham5657 3 หลายเดือนก่อน

    Very professional explanation. I enjoyed it. VK2LO.

    • @VK3FS
      @VK3FS 3 หลายเดือนก่อน

      Glad you liked it!

  • @StuartM0TTQAmateurRadio
    @StuartM0TTQAmateurRadio 3 หลายเดือนก่อน

    Another fantastic video!

    • @VK3FS
      @VK3FS 3 หลายเดือนก่อน

      Thank you! Cheers!

  • @kc8wvg
    @kc8wvg 3 หลายเดือนก่อน

    👍👍 great explanation and production. 73 KC8WVG

    • @VK3FS
      @VK3FS 3 หลายเดือนก่อน

      Many thanks!

  • @nikpresservk3ba779
    @nikpresservk3ba779 3 หลายเดือนก่อน

    Very good, Andrew!! Great work 🙂

    • @VK3FS
      @VK3FS 3 หลายเดือนก่อน

      Thanks Nik. Winter is the time for making content. Gotta keep these ATV boys fed with content 😆

  • @rajantn9240
    @rajantn9240 3 หลายเดือนก่อน

    Great work- educational. Can be useful when preparing for amateur radio tests.

    • @VK3FS
      @VK3FS 3 หลายเดือนก่อน

      Absolutely!

  • @G5STU
    @G5STU 3 หลายเดือนก่อน

    Great stuff

  • @luciandamian5955
    @luciandamian5955 3 หลายเดือนก่อน

    Very Nice video! 73 de YO8SSB

    • @VK3FS
      @VK3FS 3 หลายเดือนก่อน

      Thanks!

  • @2321brendan
    @2321brendan 3 หลายเดือนก่อน

    Nice vid Bloke. Ive been an inactive F call for 13 years. This may give me the kick up the backside to upgrade at least to standard. Minikits seems to make some good gear . I have my sights on an ic705 soon. Then the upgrade will happen . Just need to find a local test location. Brendan VK2QRM

    • @VK3FS
      @VK3FS 3 หลายเดือนก่อน

      Hi Brendan, Great to hear you may have found he bug again. Good Luck with the upgrade. -A.

  • @nikpresservk3ba779
    @nikpresservk3ba779 3 หลายเดือนก่อน

    A MAD is a great excuse to regularly (monthly) get your uWave gear out for an arvo play, instead of just the three weekends of the year. Use it or lose it!

  • @vk4uh96
    @vk4uh96 3 หลายเดือนก่อน

    Another great presentation out of the 3FS stable! here in VK4 we do actually produce an annual calendar of all the MAD events , curtesy of Scott VK4CZ, which interlace the dates with the FD’s and other significant radio events. We think a bit of prior planning improves the turn-out rate on MADs VK4UH

    • @VK3FS
      @VK3FS 3 หลายเดือนก่อน

      Thanks Kevin. Yes, we here in VK3 try and fall in line with Scott's handywork. We have a tendency to add more to it as the locals get restless.

  • @AdamSWL
    @AdamSWL 3 หลายเดือนก่อน

    Very good video Andrew! Beautiful camera work and scenery.

    • @VK3FS
      @VK3FS 3 หลายเดือนก่อน

      Central Victoria is a nice part of the world, adn you can't beat a drone shot to set up a location. Thanks Adam.