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Amateur Radio On The Air
United Kingdom
Registrace 24. 11. 2019
Hi I'm John M7CPT.
Welcome to Amateur Radio On The Air.
I come from a CB background and have additional knowledge in computers and as a DJ.
Here you can find out information for new and old amateurs alike.
Forgotten principals, technologies & methods that still work today.
Learn the difference between book knowledge and actual practice.
You can even ask any questions you may have.
If I do not currently have the answer I'm sure I can find a source that does and it will be added to future videos.
Welcome to Amateur Radio On The Air.
I come from a CB background and have additional knowledge in computers and as a DJ.
Here you can find out information for new and old amateurs alike.
Forgotten principals, technologies & methods that still work today.
Learn the difference between book knowledge and actual practice.
You can even ask any questions you may have.
If I do not currently have the answer I'm sure I can find a source that does and it will be added to future videos.
Ending The Fear Of A Carrington Event Part 2
This is a breakdown of what the national grid (and others) needs to implement further. While it is only a short video the information comes hard and fast. I hope you can keep up.
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zhlédnutí: 46
Video
Ending The Fear Of A Carrington Event Part 1
zhlédnutí 61Před 21 dnem
This is a more detailed breakdown of what is being done be the various services (especially the electricity grid). While it is only a short video the information comes hard and fast. I hope you can keep up. 👕EU Merch:- amateur-radio-on-the-air.myspreadshop.co.uk/ 👕 NA Merch:- amateur-radio-on-the-air.myspreadshop.com/ 👕 AU Merch:- amateur-radio-on-the-air.myspreadshop.com.au/ BuyMeACoffee.com:-...
The National Grid's Preparations For A Carrington Event
zhlédnutí 48Před měsícem
Does the National Grid Know about the dangers of a Carrington event? Are they doing enough to prepare for one? Are they too late? What more should they do? 👕EU Merch:- amateur-radio-on-the-air.myspreadshop.co.uk/ 👕 NA Merch:- amateur-radio-on-the-air.myspreadshop.com/ 👕 AU Merch:- amateur-radio-on-the-air.myspreadshop.com.au/ BuyMeACoffee.com:- www.buymeacoffee.com/JohnM7CPT Tip Jar:- streamele...
Coming Soon
zhlédnutí 80Před měsícem
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Dark Days
zhlédnutí 34Před měsícem
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Carrington Destruction
zhlédnutí 51Před měsícem
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DO NOT BUY the Jianpai 8800 Plus or the 9 Other Copies of It!
zhlédnutí 10KPřed rokem
Radios listed in this video. 1) Radtel RT-490 2) JJCC JC-8629 3) MMLradio JC-862 4) Socotran JC-8629 5) Socotran FB-8629 6) Socotran 8800 7) Hamgeek HG590 8) Jianpai 8800 Plus 9) Abbree AR-869 10) Boristone 8800 FEPLabs Radio Hero or ZERO?? (Abbree AR-869 signal analised on a scope) czcams.com/video/40yUb1hBgxM/video.html 👕EU Merch:- amateur-radio-on-the-air.myspreadshop.co.uk/ 👕 NA Merch:- ama...
New Merch Store & what is to come on the channel!
zhlédnutí 88Před 2 lety
New Merch Store & what is to come on the channel!
End Fed Multiband Not So Long or Random Wire Moonraker's LWHF
zhlédnutí 10KPřed 2 lety
End Fed Multiband Not So Long or Random Wire Moonraker's LWHF
RSGB and Your Local Clubs Announce "Beyond Exams"
zhlédnutí 270Před 2 lety
RSGB and Your Local Clubs Announce "Beyond Exams"
Sigma Eurocom HF 360 & Plus Kit Performance Review
zhlédnutí 8KPřed 2 lety
Sigma Eurocom HF 360 & Plus Kit Performance Review
Rapid Setup, Test and Teardown of an all band HF Antenna, The Sigma Eurocom HF-360 + the PLUS KIT
zhlédnutí 3,6KPřed 2 lety
Rapid Setup, Test and Teardown of an all band HF Antenna, The Sigma Eurocom HF-360 the PLUS KIT
Temporary Base Station Antenna For Quick Setup and Teardown
zhlédnutí 1,3KPřed 2 lety
Temporary Base Station Antenna For Quick Setup and Teardown
The short commercial TTFD/T2FD "The forgotten antenna" - Diamond WD-330s One Year Review
zhlédnutí 4,1KPřed 2 lety
The short commercial TTFD/T2FD "The forgotten antenna" - Diamond WD-330s One Year Review
How to Cheat Sending Morse Code using the Betatech Instruments K11 Board
zhlédnutí 360Před 2 lety
How to Cheat Sending Morse Code using the Betatech Instruments K11 Board
LiFePO4 Battery & Solar Panel 2 Testing & Mistakes Made
zhlédnutí 160Před 2 lety
LiFePO4 Battery & Solar Panel 2 Testing & Mistakes Made
LiFePo4 Battery & Solar Panel 1 Unboxing With Minor Problem Spotted!
zhlédnutí 167Před 2 lety
LiFePo4 Battery & Solar Panel 1 Unboxing With Minor Problem Spotted!
How to Use a TinySA for ham radio Fox Hunting and to track down RFI.
zhlédnutí 4KPřed 2 lety
How to Use a TinySA for ham radio Fox Hunting and to track down RFI.
How to use a digital radio without a repeater. Step by step guide to the MMDVM hotspot
zhlédnutí 673Před 2 lety
How to use a digital radio without a repeater. Step by step guide to the MMDVM hotspot
Xeigu X6100 US & EU release Date Plus EU price!
zhlédnutí 1,9KPřed 2 lety
Xeigu X6100 US & EU release Date Plus EU price!
The Ultimate Switchable Balun 4:1, 9:1, 16:1, 25:1, 36:1, 49:1 & 64:1
zhlédnutí 2,4KPřed 2 lety
The Ultimate Switchable Balun 4:1, 9:1, 16:1, 25:1, 36:1, 49:1 & 64:1
Building the Morserino-32 version 4.1 - A step by step guide
zhlédnutí 1,1KPřed 2 lety
Building the Morserino-32 version 4.1 - A step by step guide
Minor Addition to Foot Switch, Sure SM58 Microphone & Yamaha Mixing Console For The Xiegu G90
zhlédnutí 199Před 2 lety
Minor Addition to Foot Switch, Sure SM58 Microphone & Yamaha Mixing Console For The Xiegu G90
Foot Switch, Sure SM58 Microphone & Yamaha Mixing Desk For The Xiegu G90
zhlédnutí 1,6KPřed 2 lety
Foot Switch, Sure SM58 Microphone & Yamaha Mixing Desk For The Xiegu G90
Upcoming Ham Goodies Giveaways! (This has now been drawn and the giveaway is closed.)
zhlédnutí 158Před 2 lety
Upcoming Ham Goodies Giveaways! (This has now been drawn and the giveaway is closed.)
I use spectrum analyser field fox usb anaylser but i canjot seem to locate it close to the house i found it on a mountain top close to my house, but i need a sniffer could you recommend one
The TinySA with attenuators should work well.
Hi is there any sniffer i can use for ham operator to locate 24MHz interference
The TinySA should be capable of scanning on that frequency. You may need signal attenuators when you get close to a source.
I want to build the 3 wire version (T3FD). Let's say I use a 1000 ohm termination resistor. There seems to be disagreement about the balun. Can you explain how to choose a balun ratio of 9:1 vs 12:1 vs 16:1?
the actual required balun is designed to reduce the resistance as close to 50 ohm as possible a 1000 ohm termination resistor would ideally require a 20:1 balun. The T2FD typically has an 800 ohm reister between the 2 sides, the WD-330s has a resistance closer to 1250 ohm that would require a 25:1 balun see my switchable balun for the number of winds required for each:- czcams.com/video/ko7jT_VyM3c/video.html
Good to see you again John! 👍👍👍👍
Thanks
Interesting to see what your next ones about. Are we talking world ending scenarios?
Hmm You'll see soon enough I was on me way to filming it during this video. I've just got to try and clean the audio before I can upload it.
Nice I like the tune John
The surprising thing was I told Suno the name of the channel and the AI did the rest!
Nice to see you back John as to where you’ve been I just thought witness protection haha.
Witness protection LOL
I've used the SE HF-80 and the Plus kit setup including the G90 for over 3 years. I mount mine on an expandable speaker tripod stand so around 2m above ground. I've had excellent results from this setup. I'm mostly CW and have worked the world on 5w. The only niggle I have is the antenna skips the UK (I'm in South Wales) and its rare I get a UK QSO...the rest of the world yes but not the UK. 17m FT8 has been fantastic these last couple of weeks. Good video, 73
I think the problem your having getting UK QSO's will be down to the donut shape of the signal radiation pattern not working NVIS. You could try lowering the antenna so it reflects more off the ground. Alternatively a second horizontally polarised antenna such as a horizontal dipole or long wire would be required to work the high angles needed for NVIS.
Hi John, thanks for the video, just wondering if you have done any simplex at all on the Moonraker LWHF ? I've just got the 20m version & hoping to be put up in the next few weeks, as opposed to being on a fence mine is going to be mounted between the house & rear of garage. M7JTF
Unfortunately due to my location (in a valley) I have not been able to do any significant simplex testing however I have used it on a few occasions to good effect for working NVIS.
How did you fix the 1, 35 metre steel whip at the top? How deep inside? There is no mention in the manual of what to do...maybe for SWR adjustment how?
unlike the expansion kit the top whip only goes in a small amount just enough to secure it in with the 2 screws. No tuning of the main whip at all. Then just treat as a random wire for the radio side tuning where needed.
Sir Paul from sigma comm. told me the plus kit on my 1 kw SF 360 will not take the 500 watts from my three tube 811 amp. Plus kit is good up to 100 watts that’s it. JohnBoyUtah KJ7TBR🇺🇸😎📡🎙
Probably true but the antenna without the kit is only rated for 300w so using a 500w amp with this antenna is a bad idea anyway.
I bought one today, did you ground it the base mast pole whatever?
No. I just added a common mode choke below the feed point.
Friend cannot get it to tune on 10m with the 40m and 80m kit, It tunes all other bands, SWR is 5 on 10m, any advice ?
You could try adjusting the angle of the 40m/80m kit but beyond that I am afraid I do not know what would work. The difficulty could even be caused by the current solar cycle. On my EFLW I have lost use of 40m and have to reduce power on 30m to QRP levels.
Less windings on the balun with magnet wire give an improvement on the higher bands. Too much inductance for 10M band.
Interesting. I'll have to do some tests.
I built one a few weeks ago, 133ft wire to a 9:1 balun, with about a 17ft wire on the, we'll call it the "negative" side of the balun, & a 50ft coax with a ferrite choke wrapped up in the coax near the radio end. Xiegu g90 tuned it on every band from 160m to 6m. I set it up once as a sloper, & once as an inverted L & made contacts both times. It's long but I wanted to give my radio an opportunity to work on all the possible frequencies. Nano vna showed no resonance anywhere along the frequency range. I'm pretty happy with it.
Counterpoise was the word I was looking for.
I also get 160m-10m on my G90 and 80m-6m on my FT-991a. If I wanted 160m on the FT-991a I would require an external tuner but as I have a G90 I don't really see any benefit there for me.
Can i pick your brains please John, I have the plus kit for my SE HF X 80 up now but can I paint the 40M & 80M hamsticks matt black? or will that affect the signal? ... just trying to stealth the whole antenna ( nosey neighbours etc) thanks Mate!
There are 2 things to be careful of when choosing what paint to use. 1) it must be non-conductive and 2) there are a lot of paints that will degrade the plastic coating. As long as you can avoid these 2 problems it will be possible to paint it any colour you choose.
@@A.R.O.T.A. Thanks John! I coated the main x80 mast (aluminium type ) in simoniz matt black spray leaving about 100 mm clear for the metal to metal and there was no diiference in signal I got 40m tonight 7.1770 Mhz 9 on the signal meter and it was as clear as a bell! no 80M band though I;ll wait till later on its just the Hamsticks for the plus kit i was worried about them being wrapped in the plastic coatings.. Thanks very much John its greatly appreciated! I like all your videos by the way very clear and concise! 73's.. Take care mate!
@@A.R.O.T.A. Hi John! Got both the hamsticks painted today they look great got them back on the X80 and they work fine.. reception hopefully will be better when i get the antenna up higher with the swaged poles which are also getting the black paint..
@@A.R.O.T.A. Hi John just to say I haven't been on CZcams for a while you keeping ok?
@@davidcurrie8564 I'm good. Sorry I've not put anything new up for a while as I've been researching something related to a couple of videos I did a while back and need to wait until I can release the information without the annoying political junk discolouring it all.
Hi John whats the natty music playing on the antenna build up 😀😀😀
Smoked Kielbasa Polka - Doug Maxwell_Jimmy Fontanez
You still alive? Long time no see.🤠🇦🇺⁷³
Yes I'm still alive although I haven't had much chance to upload for some time. Hopefully I'll get back to it soon.
@A.R.O.T.A. ah okay, nice! Glad you're still kicking. :) Looking forward to seeing you back at it.🍻👍🤠
This is an UNUN, not a BALUN. Nonetheless, nice work...
While the 16:1 is at the balanced feed of a T2FD you are correct that the others are for unbalanced antennas.
Great Ideas for folding antenna mast with locking option .. thanks for pointing this out John. 👍👍👍 I bought a rather large 60m whirly for the back green for my wife last week lo and behold a turned it upside down to fit the stand and ground spike and I had a huge 4 legged antenna stand! all i need was large tent pegs to pin it to the Ground.. and a bit of fabrication with the support pole to allow for the mast. .
25 w maximum sounds right! after all if you take off the casing and look inside its only a small balun!
Great video but is the angle of the plus kit antennas set to a specific angle?
The ideal angle for the plus kit will vary. Height above ground wanted take off angle etc, I finally settled on a horizontal configuration that worked well for me. I suspect those with extra height above ground will probably get better results with the plus kit angled downwards.
@@A.R.O.T.A. thats great thank you very much !. i have still to buy the actual extra kit for my S-EX HF 80 (Aluminium version) which i am looking forward to very much as I have the 40M band just now on my longwire in the attic with the Yaesu ft950 and the 80M band at a push. just one frequency picked up, hopefully this extra kit will boost the signal. I live in scotland in ayrshire currently with the RSGB in uk I have my SE-X HF 80 antenna painted acrylic black to hide it from the nosey neighbour brigade!
getting the plus kit tomorrow! arriving by Royal mail parcelforce here's hoping it arrives safe n sound!
15:40 "There's nothing I know of that can solve this problem." You could use a band-pass filter. (Or just a low-pass filter.) But, much better just to get a better radio.
Yes, much better just to get a better radio rather than have to have a band-pass filter for each band you want to use.
the second camera angle and focus is bad
Sorry. Best I could do at the time and only had one chance to get it.
Many many thanks for this video.. Ive been using gridtracker for a few weeks now but never changed anything for fear id mess things up.. thank you for explaining how best to use/setup this.. DE M7PGT 👍 73
have they removed the lightning strikes from the newer version as I don't have this setting anywhere on gridtracker. 🤷♂ I don't even see any settings for this anywhere.?
Thanks. Going to recommend to my clubs. 👍
What angle are the radials. Upward or horizontal thanks
Use a bit of trial and error here. The angles will vary with each station and height above ground etc.
That is the whole idea of these "random" antenna lengths. These lengths are resonant on a frequency, but not on any amateur radio frequency. Therefore, they are not for any particular band. Just put one up and see where it tunes. If your tuner cannot handle the mismatch, use a 9:1 Unun between the antenna and your tuner. For 80m- 10m, try the 71 ft length, it is close to a 1/2 wave on 40m and a 1/4 wave on 80m. Tthis can be deployed as a sloper, inverted V, an L or inverted L, a vertical . . . it is very versatile.
Is the TinySA reliable? I want to make sure that it will last a good while. What attracts me to it is the fact that they are not insanely expensive in the same way that typical spectrum analyzers are. These may be useful for finding unauthorized devices like tracking devices and other bugs. By unauthorized I mean not necessarily illegal but a device that was placed without permission as most tracking devices would be. I imagine the majority of the devices would fall into TinySA's detection range of frequencies. Anything outside of that will need an amplified signal to get too much further especially seeing as how some WiFi does not penetrate walls too well. That is most likely the key reason why many cell phones work at around 900 MHz. Too high and you lose your signal when you go into a building with too much metal or a tunnel. Or if you live in a place where there are a lot of bridges the metal in them may in rare instances cause problems with reception. Now when it comes to blocking a signal I don't just blindly assume that a metal box or piece of foil will stop it from getting out. An example is that I use a Faraday pouch for my key fob so the signal is not always available. One way I test to see if it works is take it into the vehicle _with me_ so I don't lock it in if it works. Then I see if the vehicle will start. It should not start with it in there. Of course I knew it would work because it was designed to do that. Now I did try the metal box and aluminum foil and neither of them worked even the slightest bit. I am slightly annoyed since I wasted a bit of foil that should have been keeping food fresh but I feel good knowing I proved that myth wrong.
My TinySA is still as reliable as the day I received it. I would recommend you also get some attenuators as strong signals could damage it. I'm afraid I have not looked into Faraday Cages/Pouches so can't advise you on them.
how are you ding that with the video? speeding uo between speech.
I used "VideoPad Video Editor" the speed playback setting is in there.
Nice concept. Can't duplicate it cause your doing everything off camera. Please remake the video for us newbies. Tnx
whats it like for nvis interg on 80?
This is a very compromised antenna and I'm afraid it didn't seem to perform well for nvis on any band. 😞
how about posting the schematic?73.
Didn't see any point as it was only done as an experiment to see if it would work. I still have found no use for the 25:1 and 36:1 settings and the case is not waterproof due to holes drilled. I simply use it to determine the best balun/unun for the antenna and then construct one with the appropriate type.
Thank you for showing and telling other hams about this family of antennas. I agree that what others say about this antenna is very confusing mainly because of the words used like random. Random is a bad word when it comes to this antenna. Just buy one put together and don't worry about the length. Your advice about needing a choke before going into the shack is very important.
Thanks . Very helpful !
Many years ago, I had the Barker and Williamson 90 foot version of this antenna, up horizontally at 40 feet. Though it was rated at 1KW, I occasionally pushed it to 1500 on SSB with an Alpha 87A. (No-tune amp plus no-tune antenna minus an antenna tuner equals minimal effort.) I thought it worked very well on all the HF bands with the exception of 160m. I managed to heat up the once-white termination resistor housing so that it turned brown. Still worked fine. It didn't like 6m, but was oddly happy on 2m. I tried to buy another one but now B and W only makes it with stainless steel wire. The one that I had was Copperweld wire, which they said was no longer available. The stainless one costs a lot.
New sub John ..keep up the good work ! 73s M7CYC
Thanks
Interesting video and great results 👍🏼 Might try one of these. I made my own EFW antenna last week, I used one of those ‘green’ numbers on the link you looked at (41feet) that fits nicely into the garden. The 9:1 balun was something I previously had for shortwave listening and I took a ground to a copper rod in the soil. Had some good results in Europe on SSB but nothing further and it tunes down to 40m with the transceiver ATU. Best results on 15m. I’d like to try a dipole but too inconvenient getting a centre support up in the middle of the garden. Anyway, if I try this Moonraker version I’ll report back if there is any improvement on what I am using.
Neden alt yazılarda türkçe yok
Subtitles are autogenerated by CZcams and should all be present.
@@A.R.O.T.A. I think it should be. but not have . And there is no aliexpress abbree f8 😅
There are no sales addresses because I am telling people not to buy this radio!
@@A.R.O.T.A. motorolo gp680 good? or bad?
Sorry I am unfamiliar and have not tested that radio.
HOPEFULLY ILL GET THIS GOING IN A FEW MONTHS
when I hit monitor, I don't get any stations. at least your video started with that. Now I need to know why its not working.
The monitor must be green to show active also look at you waterfall to see if there is activity on the band.
The monitor button is green, but nothing shows up in band activity@@A.R.O.T.A.
And I thought the Southern US talked slow!
Well I did spend a few months in TX. LOL
well then it should not have a FCC ID, yet it has , which is 2AZSA-RT490
Unfortunately there are many radio manufacturers that label their goods with false FCC ID's. Not being USA based I do not know the FCC regulations or tests but this radio does transmit on it's harmonics and therefor runs the risk of transmitting outside of the ham bands.
@@A.R.O.T.A. maybe your radio is a fake?
@@Ruprych 1 fake radio out of the range listed may be possible but I am one of many that have performed similar tests on all the radios listed with the same results.
I don't have 8 pin mini DIN cable. Can you tell me the pin out on it please? Is it a straight though cable? I found the pin out for the G90 but not for the C-19. Is it a cable used on other equipment?
All pins should be identical but the AF_IN and AF_OUT should swap over.
@@A.R.O.T.A. Excellent. Thank you. I bought the C19 sec hand. No cable! 73.
Amazing - I might get one if it really is that easy. Purely for RX. Have you tried it on 27mhz and how does it perform?
The short version of this antenna has a VSWR on 27mhz is 1.5 without a tuner so should work perfectly well but I have not tried TX on that frequency.
@@A.R.O.T.A.Thanks. I'll be getting one and putting it in ready for when I've done my Foundation license. Question: I want to run it off the top of a Spiderbeam telescopic pole and then down the side of a very old 60ft long outbuilding made of stone. Using plastic cable clips presumably. I'm assuming it's ok to run it down the side of masonry?? I've only get experience with vertical 11m antennas. TIA
Should work pretty good with that setup. Just remember that the feedline or the counterpoise should be kept at least 90 degs from the main radiating element.
counterpoise as in earth?? Feedline as in coax??
Counterpoise as in an extra piece of wire sometimes added to the earth side for better performance (not to be confused with a coper rod imbedded in the earth). Feedline as in coax yes.
I’d love to see the antenna configuration mounted.
I covered this antenna in 3 videos start to finish and made the following playlist. While I am sure height would benefit this antenna for my convenience I kept it close to the ground. czcams.com/play/PLWReAZ_MgKO6bOT4Tt1rmpqbyo9huuFGC.html
Ok...mr
The power rating is 400w....it was the last item listed, a little below the wire length
The 400w rating is also known as UK Max for full licence holders and in this case refers to ssb. CW & Data modes are normally a lot less so be sure to ask for a rating specific to these modes if you intend using them. I only have a UK foundation class licence and can only test upto 10w (far bellow the max rating for this antenna).
@@A.R.O.T.A. Ahh, gotcha....I wasn't aware of the UK limitations, just assumed that was the max for the antenna. As for the CW and Data modes, I've never understood why anyone would use more than a few watts (20 or so).....actually even seems a bit rude when 5-10 watts will do the job...
Are you still using this antenna? I have the X80 with the plus kit and thinking about putting it up now the solar cycle has kicked in and the better weather is here. I plan on mounting it about 4 metres high with a short run to the shack.
Sounds like a good setup the extra height should help. I only use mine for short term setups when needed.