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Antennas are lightning magnets. Please don't use anything connected to your houses ground. Keep your antenna ground separate or lose everything in your house.

Have owned two of these COMPACtennas and used them primarily on wsjt-x FT4 and FT8 on 20 meters. They work but I have not found them not to be as robust as I would like. Both suddenly stopped working after about a year. If you buy one, follow operating instructions to a "T."

awesome video, big thanks for goin through your process! :)

LNA used is from 50mHZ to 4 gHZ - so not useful for HF right?

Another idea is to make a _"trap dipole"_ with a capacitive/inductive trap to isolate each band from the next longest...

Earlier this month I bought my FT891 paired with ATAS-120A. After viewing your video, I now know how to properly tune for FT8. I was trying to tune using the button without making adjustments. The 891 would be my radio when I’m out and about, but I will be buying the 991A for home.

its not a low power application for FT8.. its a weak signal mode. so i run 200-400w .

Great explanation, I saw a partial vid using phone cable (multi band) as an ant and have been looking for a detailed tutorial. Thanks

I really appreciate this video. Since getting my SDR I've been looking for an explanation of the nuts and bolts of making a multi-band antenna for receive only.

This is a wonderful approach to multiple antennas (all-in-one) for the SDR receiver! Thanks.

Why not just tab the coil at rhe 50ohn point,,,way. simpler,,,moving the coil to adjust feed point impedance is a hairpin feed,,,eithet way its very effective and can be used in 1/2 antennas also.

Amazing! Thank you so much for this video, sir.

New sub here Thanks for your video new to RTL SDR very interesting Thanks for the information

can't i just use the ground of my wall sockets in my apartment?

So essentially making a fan dipole out of a multy strand wire if I am following here. Do you pull the remaining wire out of the shielding (the part not connected to the feed end hookup?) I don't get how that would not become a parasidic antenna to effect your bandwidth...

Hams often overthink grounding and bonding. Is a ham transceiver "equipment" or an "appliance"? Why do you need a separate ground attached to your service panel? Why can't you use outlet ground? What electrical code are you speaking about when using an appliance such as an amateur radio transceiver?

Communication on vhf uhf is normally vertically polarised.

Great work! Thank you!

Absolutely loved your presentation, and your descriptive explanations, plus the outcomes of all the things you did try. You have won my thumbs up and subscription so that I may view your future uploads.

переводить метры в футы, и потом возвращать. это глупо американски

Awesome. Relaxed and spoken naturally.

Am I the only one that noticed? 80 Meters is 262.5 feet, not 281with a quarter wave of 65.6. 40 Metets is 131.25 feet not 141 with a quarter of 32.8 feet. The 30 meter measurement is correct. But the 20 is also wrong. Hope this helps someone who is cutting wires to exact lengths or do your own conversions.

Nice vid!

Excellent video for people who live in high rise apartments like me. I am on the 14th floor and always used to wonder !

What is that program showing where your FT8 signals are reaching? I'm very new to FT8 and still prefer SSB but I'll give anything a go at least once

Thank you for this unique antenna design. Can you tell me what the connector is from the Sdr dongle to the Lna? I don’t know what to order.

Decent projects Bandit, especially since I just started messing around with sdr`s. Maybe you can find some way to reduce the actual file size of the vids without affecting the resolution quality. Some vids I download to the laptop to view later, like on my bosses time LOL. So sometimes they end up being too large and take up too much space. 73`s.

This answered a lot of questions I had, thank you! A couple quick questions I still have, as silly as they may sound: 1) When you're cutting those CAT wires to length, do the "dead" ends interfere with the signal (i.e. should you slide them out of the insulation?) 2) What's the difference between grounding to a rod stuck in the earth vs. the ground in a grounded outlet? (I live on the 2nd floor in an HOA + I've also never seen anyone suggest using the ground in an outlet, so there must be a good reason.) 3) When you say "just one wire," referring to the "hot" wire in the core of the run, is this connected to all of the different lengths of CAT wire in the antenna at the same time, or do you have to change the length of the connection based on what frequency you're trying to receive? Thanks for walking through this setup!

Lovely and extremely useful content, Bandit. I wish my teachers where as patient as you. lol Greets from the Dutch.

Bandit, what application is showing on the left screen, where the FT8 is plotted as visual map representation, that looks so awesome! (Subbed btw!)

FYI: FT8 is, in fact, a weak signal mode, not a low power mode. It is always recommended to use minimum output power to make a QSO.

Could a person ground to the outlet plug in a apartment if they couldn't run the ground wire out the window?

18:00 i just found out about how ground can raise the noise floor when it's not done properly, a dipole is much better if you can't do a good ground

Thanks so much for helping out and making this simple

"What a hunk of junk! You are flying in that? You are braver than I thought." "This is the Millenium Falcon. She did the Kessel Run in 12 parsecs! She's the fastest freighter in the galaxy!"

I’m looking to make one for Gmrs just to Rx with it . What would the diameter be ?

Extremely useful. Thank you.

Are those radial 45 “ ? Reason is it looks like there 60 ” to me on your video

2nd year running RTL-SDR with air spy & with a dipole pizza pan antenna. Noise is a big problem; and your design looks very promising. Yep, I need a ground for my tiny rig to mute the noise. The large surface can collect weak signals, but it also overdrives the SDR. For now i just need to reduce the noise. I plan to use mason jar lids to create an old time tuning capacitor to pacify the over driven signal. Thank you for your presentation.

Getting 5 Difrent Conversations In One Frequency IS NOT GOOD, Im getting The Same Problem, But I Change The Antenna Settings, I Mix Mach The ANtennas AUntill I Get The reception I Need Or Want, Sometimes I Don`t Get What I Want , But Thats Why Radio And Antenna Things Are Always Interesting Because To get Best Results You Need To Think Outside Of The Box All The Time And Inovate On The Spot. Love The Content

Make a comparison with a 4 meter long speaker wire, the wire probably works just as well or even better

if i wanted to put this in a vehicle, can i ground to the chassis or will that cause problems? if i do a counter poise, will i get RFI off the vehicle? does the antenna have to be straight or can i make deliberate bends to follow the contour of the vehicle?

Impressive work!

What lna is that?

What sort of metal object could I use when I'm taking this thing portable?

Thank You! It's coming together! I appreciate what you do!

That would help with my end fed wire antenna period having a lot of RF off of it because of grounding issues in the shack very easy to build to going to try it 👍👍

Great info thanks.

Confused on some points. 1. If I understand correctly your antenna is basically installed horizontally on the roof, correct me if wrong. 2. Let me know if this is right, It would seem as though you are running a piece of 50 ohm coax straight from equipment antenna input out through your window over to your ground rod. You are opening up your coax at that point to tie the shield of coax to the ground rod while leaving center conductor alone. Then continue coax up to roof antenna start point at one end of house. At that point you separate the coax into center and shield/ground. The shield is left alone while the center conductor ties into your multi antenna common point. From here is where I think your description is very unclear. You mention the full length of all conductors is whatever is the longest wire calculation is. Now from the common initial feed point you go out to the dimension of your second longest calculation and cut open the outer insulator to make the necessary cut on wire 2. Ok, you've made that cut but what about the rest of that same wire that you just cut? Do you pull the "unused" sections of wire out the back end or are you leaving it. Repeat question for each band. It would seem leavening the "unused" section which now lies in parallel and in close proximity might effect antenna performance.

...pretty nice QTH!...73!