In this video, I'm checking SWR Antenna resonance NanoVNA H4 vector network analyser. There's nothing technical here, it's all basic stuff for those new to amateur radio. www.radio-work...
Пікірлер: 88
@MirlitronOne3 жыл бұрын
Hi Ray. Three suggestions: 1. Buy a couple of SMA M-F adaptors (£5 a pair on Amazon) and fit them to the NanoVNA sockets. When you wear out the threads on the (cheap) adaptors, throw away and replace, saving wear-and-tear on the main sockets; 2. Always set frequency range and THEN calibrate; 3. W2AEW's KZbin videos on the NanoVNA are the best.
@g4nsj3 жыл бұрын
Thanks for the tips. I'll check out the videos. Cheers, Ray.
@phillipsmiley59303 жыл бұрын
Its an endfed 430MHz 70cm 5/8 wave, 16 inch with a 3 turn 1 inch coil to make up the missing 3 1/2inchs of a 3/4 wave (19inch). it'll match as a loaded 1/4 wave on 145Mhz 2M so its a 2M and 70cm natural dualbander Gain about +3db on 70cm and -2db on 2M If you want to use it as a dualbanded you should add some 19 inch groundplanes for 2M
@PaulStrickland2 жыл бұрын
I was looking for an antenna like like this but could never find one! Would love to know the name if anyone knows?
@davidlucas68372 жыл бұрын
Thanks Ray, your videos are at the 'just right' level for me! I have ordered a Nano Vna and the local club are doing a presentation on their use this week. Thanks for the introduction, keep up the good work, G8XDD
@g4nsj2 жыл бұрын
Thanks, David. Great to hear from you.
@toastnotoflondon85003 жыл бұрын
Excellent Ray. I have used mine for a year or so and it's great. Every time yourself and other YT people post on the Nano VNA I discover something new about it. Many thanks.
@g4nsj3 жыл бұрын
I don't know what I'd do without it now I've got it!
@charliesoffer3 жыл бұрын
Looks like the sort of tool you need to keep using and it’ll become second nature. Thanks for navigating us through, Ray! 73s
@g4nsj3 жыл бұрын
Indeed!
@tonym7cvk430 Жыл бұрын
I have just received my NanoVNA-H4 just completed the 1st calibration and tested my HT antenna fantastic bit of kit a lot to learn this video has help already, cheers sir M7CVK Tony.
@g4nsj Жыл бұрын
Hi Tony, that’s great. I’m glad the video helped. There’s a lot to learn about the Nano, but it’s worth it. Cheers, Ray.
@Ansedelargissement Жыл бұрын
Many thanks, analogue SWR meter destined for the spares box now I have ordered the 4" model thanks to your clear practical demo
@g4nsj Жыл бұрын
Hi Malcolm, it's nice to hear from you. I'm sure you'll be happy with the 4" version. It's a great little device. Cheers, Ray.
@d.jensen51532 жыл бұрын
Great little intro to the NanoVNA! Between you and W2AEW I was able to get going with my new NanoVNA immediately. First thing I discovered (just seconds ago) is that the 2m mobile antenna I've had for decades is tuned to 156MHz. High time I loosened the grub screw and deployed more length!
@g4nsj2 жыл бұрын
Wow, I’d better check my mobile antenna!
@susancarter986211 ай бұрын
I'm a novice and really appreciated this video, thanks.
@g4nsj11 ай бұрын
Thanks, glad you found the video useful.
@IrishvintageTVRadio3 жыл бұрын
I got a Nano VNA a while ago but haven't used it yet. I plan to use it primarily for making aerials for 2 meters. Nicely and simply explained Ray, thanks.
@g4nsj3 жыл бұрын
Good luck with the aerials.
@anthonyduffy24403 жыл бұрын
Excellent video as always Ray. Cheers.
@derrickgoodwin70782 жыл бұрын
Hi Ray. Thanks for your video on the vna. I have just bought one myself and your demonstration has given me a good idea how it works. I shall be checking my aerials to see where they are resonant. Thanks Derrick GW0LJW
@g4nsj2 жыл бұрын
Hi Derrick, that’s great. Glad the video helped. Cheers, Ray.
@stevenyemc3 жыл бұрын
Love my NanoVNA! The PC software is pretty handy. I have learnt so much from this tiny and inexpensive box of tricks. I built a J-pole from plumbing scrap and was really pleased when I hooked up the VNA and it was tuned nicely by dead reckoning alone. Happy days! £30 ha ha. how much 20 years ago! £10,000 or so.
@g4nsj3 жыл бұрын
Happy days, indeed!
@thisisus.504 Жыл бұрын
Trying so hard!! Thanks so much Ray. I got my FL back in May and don't know anybody else that is into amateur radio. I looked at joining a local radio club but felt wildly deflated when club members were saying...well of course you didn't have to set up your own radio set did you....(not my fault, it was covid)......and......well you can put out a CQ call all you want but as an M7.......(well I'm sorry I have to start somewhere). I'll not name the club, that wouldn't be fair....so a lot of my knowledge is from course work, Google searches and most commonly KZbin. I have a modest radio shack set up and have antennae that I now realise need analysing and tuning. I grip on by the finger tips as far as this side goes and have a Nanovna coming tomorrow. Thanks for your work, I don't feel so lonely. Its such a same as I really wanted to feel welcome. If I wanted to be judged...I'd join a Gym! 73 M7DKU (proudly so)
@g4nsj Жыл бұрын
Yes, we all have to start somewhere! Take no notice, some people are just crazy. Good luck with the VNA. Cheers, Ray.
@shawnchartrandva3gfy720 Жыл бұрын
Keep up all the good videos
@g4nsj Жыл бұрын
Thanks!
@starman3162 жыл бұрын
Excellent, I have ordered one of these today and found this video very informative :-)
@g4nsj2 жыл бұрын
Excellent!
@JayN4GO3 жыл бұрын
Appreciate your honesty. Most you tubers just make shit up. Good job
@g4nsj3 жыл бұрын
Thanks Jay.
@nigelbleddfa3 жыл бұрын
Excellent video, as always. Very helpful, thank you.
@G0ogs3 жыл бұрын
They seem to be getting popular and I think a better way to check your resonant devices 👍🏼
@markbroyles69123 жыл бұрын
Thank you Ray🙂, just got my first VNA really enjoyed your video hope to give you a call sometime 73 Mark
@g4nsj3 жыл бұрын
Excellent Mark, I’m sure you’ll find the VNA very useful. Cheers, Ray.
@eddyaudio3 жыл бұрын
Thanks Ray for a Excellent Demonstration of the VNA Regards Ian VK2IJ.
@g4nsj3 жыл бұрын
Thanks!
@paulcollins98393 жыл бұрын
Hello Ray, there's also a Nano type of spectrum analyser out there, not to be mistaken for a bench S/A, but they do a fair job, both are good for filter characterisation , have fun with it. Paul M0BSW
@g4nsj3 жыл бұрын
Thanks Paul, I'll look out for it.
@fredshead39562 жыл бұрын
What i like about your videos Ray is, you dont try an baffle people with science or pretend you the cleverest bloke in the world, just keep it simple thats easier for me to understand hi....Fred g4vvq Nr Chelmsford.
@g4nsj2 жыл бұрын
Thanks, Fred. It’s nice to hear from you. Cheers, Ray.
@Leonards_life Жыл бұрын
Yes, thank you...I just got a nano VNA and it isn't all that complicated and turns out to be an ideal item to have on a filed day to help others who are ccondtantly changeing bands using an all band antenna. 73 N6ZKI
@g4nsj Жыл бұрын
Excellent!
@tatalito3 ай бұрын
Thank you very much !
@buffalodiesel18093 ай бұрын
K9BW QRZ .... thanks... a very clear explanation on how to use a basic but very useful feature... Just got mine... never came with instructions 73's
@g4nsj3 ай бұрын
Thanks, I'm glad the video was useful. Cheers, Ray.
@timg5tm9413 жыл бұрын
Great video Ray. Thanks again 73
@kengrey72633 жыл бұрын
5/8 wave on 70cm. Quite a high quality aerial.
@g4nsj3 жыл бұрын
You're right Ken, it must be 5/8.
@markanthony71842 жыл бұрын
Excellent video! Thank you
@g4nsj2 жыл бұрын
Thanks!
@WiltshireMan2 жыл бұрын
It looks a really good bit of kit that Nano VNA. I'm thinking of getting one
@g4nsj2 жыл бұрын
Well worth the money.
@A2kjb Жыл бұрын
Very informative
@g4nsj Жыл бұрын
Thanks!
@fredshead39562 жыл бұрын
Hi Ray i have just bought one of these, haven't used it yet seen a lot of videos on it, i suspect that antenna is a 5/8 wave on 70cms, its prob usable on 2 meters, with 5/8 wave the coil at the bottom acts as an 1/8 wave so is physically a 3/4 wave but electrically a 5/8 wave, so should work well, as for swr being different for different meters, yes indeed, i think some of that is due to the fact with some you connect the aerial straight to instrument and others have patch leads and connects that might cause a slight mismatch...from Fred g4vvq in Essex.
@g4nsj2 жыл бұрын
Yes, I agree. That could well cause a mismatch.
@charlieoscar093 жыл бұрын
Thankyou for the video very useful
@coltronex3 жыл бұрын
I use mine all the time,you need tools like this otherwise you can be in the dark as regard to antenna building and filter design,regards Colin G1PGI
@g4nsj3 жыл бұрын
Thanks Colin.
@yorkshirebikerbitsnbobs3 жыл бұрын
Excellent video.... I am waiting for a VNA from Amazon... Need to tune a Sirio Performer 5000.... Thanks..
@g4nsj3 жыл бұрын
Let me know how you get on with it.
@user-tc5nk6oq7u3 жыл бұрын
Hi thank you for thes video Im abdul razaq chalabi Iraq bagdhad 22 / 3/ 2021
@fretlessfender3 жыл бұрын
Nice!
@lawrencethompson465 Жыл бұрын
Can the NanoVNA measure open wire fed antennas such as a doublet or is it only used for coax fed antennas? Thanks. Your video is helpful.
@g4nsj Жыл бұрын
I’ve not tried it but yes, it should be ok for that.
@lawrencethompson465 Жыл бұрын
@@g4nsj Thank you. I appreciate what I have learned from your videos.
@g4nsj Жыл бұрын
@@lawrencethompson465 glad you found the videos useful
@BOBService4173 жыл бұрын
Dear Ray, we like this video so much. May I edit this video and upload to our amazon listing and Brand facebook page?
@g4nsj3 жыл бұрын
Dear Becky, I’m pleased that you like the video. Yes, you may edit it and upload it to your Amazon listing and brand Facebook page. All the best, Ray.
@MONTY-YTNOM3 жыл бұрын
Do you have to run calibrate every time you turn it on, or every time you change frequencies. ?
@g4nsj3 жыл бұрын
Yes, you do need to calibrate with frequency changes. However, saving settings in the memories is useful for certain bands such as 2 metres 70cms etc.
@jessikaentwistle31453 жыл бұрын
prob somthing like a 7/8 wave for 70cm ray... that by the way looks a brill piece of kit.. 73s M3ZEG
@g4nsj3 жыл бұрын
I think you’re right, Jez. 7/8 on 70cms. Cheers, Ray.
@analiensaturn3 жыл бұрын
Ray have you got a link for that component box with the yellow border ?
@g4nsj3 жыл бұрын
Yes, it’s here... www.ebay.co.uk/itm/141960490282
@shawnchartrandva3gfy720 Жыл бұрын
just ordered one . can't afford MFJ
@g4nsj Жыл бұрын
I'm sure you'll be pleased with it.
@phillipsmiley59303 жыл бұрын
Test it again on 433MHz i would guess its a little long and will center around 420MHz? trim from the bottom of the aerial not the top
@g4nsj3 жыл бұрын
Thanks Phillip.
@phillipsmiley59303 жыл бұрын
@@g4nsj No problem, i'm an ex PBR tech, we used to fit UHF 5/8 like that on a lot of vehicals, i'm surprised they arent used more by Radio Amateurs as conveniently small 2M /70cm dual band mobile aerials.
@laidman2007 Жыл бұрын
So you're going to put the 70cm aerial out in the backyard because it looks good? 🤣