I have been using one of these (an early version) for about 15 years now and never had a problem with it. Build quality very good and quite a bit quieter than other antennas I have used.

Very nice demo. I laughed at seeing the Dalek running across the screen!

Low noise floor with the dipole. Very nice.

So basically, it is a shortened dipole fed with a 4:1 transformer. It would be interesting to see a longer version, or one with a remote ATU in the middle. Good low noise result, probably less efficient but you can fix that with an amplifier.

Around 1976, I got home from work to hear aurora on 10 metres! Had a A contact with a local on ssb. We both had 2 ele quads and beamed North. We were 5 miles apart! G4BTI.

I built my own a few years ago, cost me about £50 in total. I used a 1::1 balun in center and it worked very well. I mounted mine vertically with a line isolater at the base to stop feedline radiation.

@kymhaniford

2 ай бұрын

£260 wanted for this one... Nice profit margin I think.

@justmejonboy

Ай бұрын

You bought all aluminium, parts for a balun and a clamp for £50 ? If I give you £60 (£10 profit for you) can you get them for me ?

@leebirdsall2174

Ай бұрын

​@@justmejonboyyes I did. If you can supply the time machine I will happily go back 10+ years to buy the parts and build one for you

@justmejonboy

Ай бұрын

@@leebirdsall2174 fair point :-)

@xlr8also

Ай бұрын

Wrong balun. DBP uses a 4:1 voltage balun.

Wow, yes, a BIG difference in the noise floor between the two! 73 de WA4ELW in TN 🇺🇸 dit dit 😃

That is an interesting antenna. Thanks for posting the video !

that's a nice and simple build

The noise floor is very impressive.

@K4AX

2 ай бұрын

When he switches antennas the noise floor drops but also every signal on the entire band.

@TechMindsOfficial

2 ай бұрын

Signal strength isn’t always important, but the SNR makes it possible to hear them, as shown in the video. It’s not a Yagi, but for 20m and up it out performs my EFHW for sure. Cheers

@K4AX

2 ай бұрын

@@TechMindsOfficial well you know the answer, RX on one and TX on the other 😊

@rjy8960

2 ай бұрын

@@TechMindsOfficial Seconded. I see the same thing on my Wellbrook. s/n is king.

@BrianG61UK

2 ай бұрын

@@K4AX But the signals mostly dropped far less than the noise floor did.

Excellent. Thank you.

@TechMindsOfficial

2 ай бұрын

You are welcome!

Is there an estimate of maximum wind velocity resistance?

very, VERY interesting & thanks for posting!👍😃🇺🇸

Very interesting video and antenna! Would have love to see some SWR measurements, especially on 20 meters. Thanks! 73

@TechMindsOfficial

2 ай бұрын

There is a raw SWR plot on their website, but with a tuner 1:1 can be achieved. Cheers :-)

I hope you're getting advertising kickbacks dude, he's put a disclaimer on his page lol

Nice build and video. A bit of opinion… you might want to add some kind of thread lock liquid, lock washers, or even a coil spring on the the fasteners especially those affixing the elements. With the constant movement and thermal cycling, those fasteners will come loose and an element could skewer someone. Be safe.

If they ship to USA, I may get one. The similar MFJ has 0db gain.

Thanks, Matt 👍

@TechMindsOfficial

2 ай бұрын

My pleasure!

very nice demo .simple antenna good efficiency thanks De VU2KOC from India

@TechMindsOfficial

2 ай бұрын

You are welcome!

Had the vertical version of this (with the stuff to make it into the beam). I wish I’d tried it horizontally as I hated it as vertical!!

During the arora I had a tunr on the HF bands too. everything was wiped out. I didnt try 10 meter band though

I enjoy your videos and also notice that your recoded audio always sounds great (fitting for the content). What mic do you use?

@TechMindsOfficial

2 ай бұрын

I use the Rode Pro Caster with a DBX286s Mic Pre Amp, with a little EQ reduction and filtering within Premiere Pro. :-) Cheers

That’s a pretty neat antenna! I like how it drops the noise floor without dropping the radio signal. I book marked the website. Anyways, another great video as usual. Thanks! De n5vwn

@TechMindsOfficial

2 ай бұрын

Thank you! ;-)

The magic of directional antennas! Great video thanks and 73 de WA3RSL

@TechMindsOfficial

2 ай бұрын

You'e welcome :-) Thanks for watching.

That noise floor comparison is really nice and it seems to work very well. I will finally be able to use my radio's in anger in September when I move to my place in Italy with the mrs and looking at options for antenna and new home base. 73 de G0LQP

I use a Commet H422 trapped rotary dipole. Its a good antenna but after a winter of storms the traps can take a battering so i was always wondering about the Dual Beam but as a heavy 40 meter user i would be wondering about its performance on 40. Very interesting video..

@davecarty6503

2 ай бұрын

I had one some years back and although it did tune on 40m performance was marginal at best. For 20m and up it did perform quite well. I bought mine without the balun and fed it with 450ohm back to my own 4:1 balun at the shack and a manual tuner, basically it performed like a short rotatable doublet more suited to the higher bands.

Cool antenna, I'm having to downsize house so it'll stay just a dream haha but I was just wondering: 9:19 above the ".03" you have a sign like wifi, what's that? I have this radio forever I've never seen that sign lol

I wonder if you halved the Dimensions, I guess it would be 20M and up, losing 40/30M, would be compact.

I understand it is a non-resonant antenna in all the bands it supports, but how non resonant? I couldn't find any info on the actual SWR figures. Most modern radios with an internal tuner cannot cope with anything over 1:2.5 (1:3 best case), so this information is very relevant for potential buyers.

@TechMindsOfficial

2 ай бұрын

It's on their website: www.proantennas.co.uk/technical

@borayurt66

2 ай бұрын

@@TechMindsOfficial OK, now found it. Seems, for people only equipped with an internal tuner, this antenna is only usable between 10-17 meters. At 40m, with a SWR of 1:21, I don't think it is usable at all with any kind of tuner.

@TechMindsOfficial

2 ай бұрын

I tested with a CHA URT1 about 5 meters from the feed point and that tuned it on all bands fine. I also tested with an ATU-100M Pro in the shack separately, and if I remember that had trouble on 40m. So a decent tuner is defo required for 40m. I would only ever use 40 on the DBP if I had nothing else to use, otherwise a wire antenna for 40m is way better. Cheers

Hey this product claims it does DMR. Any future videos planned to test this puppy out? REDOT RD106P 120W

I am amazed you get HF in the house. I find , even with an external antenna, it is very noisy and I cannot hear much! Outside with a telescopic whip or long wire, works fine though.

NICE ANTENNA !! TKS for the review!! 73 de PD4TZ

Basically then it is a not a beam, it is only a single element , a rotatable dipole and the capacitance hats on the end make up for the lack of element length

@BusDriverRFI

2 ай бұрын

It is not a beam. It's apparently a dipole. Whatever they're charging, it's too much. Not thought out well.

@dave10524

2 ай бұрын

@@BusDriverRFI Dual beam implies to me it has 2 elements , the gain is not over a dipole but DBI the mysterious isotropic source that gives highly inflated readings

@paulsengupta971

2 ай бұрын

@@dave10524 A standard dipole should be about 2.15dBi broadside as I understand it.

@dave10524

2 ай бұрын

@@paulsengupta971 I have always felt that a dipole should be the starting point/unity for any gain figures. If this is a shortened dipole how can it have more gain than a dipole ??

@bazzaar1869

2 ай бұрын

@@dave10524 2.15dBi is gain of a dipole in free space, over ground, good ground, you get gain from the ground image created. You can get up to 6dB gain from this at 20-30 degrees elevation, so a standard halfwave dipole could measure as much as 8.15 dBi in a real world installation.

Merci pour votre vidéo / présentation Antenne testée au QRA. Mais ma déception est grande Cette antenne nécessitant un ATU cela fait que l'on accord l'antenne + le coaxial + le balun + le dipôle capacitif ! Donc des pertes, le câble coaxial qui fait parti intégrante de l'antenne et rayonne [ il suffit de promener un Deep Mètre le long du feeder pour s'en rendre compte]. Une attaque du dipôle avec une ligne bi filaire serait plus appropriée en 450 Ohm par exemple, permettant de supprimer le transformateur d'impédance. Son avantage est qu'elle est un bon compromis lorsque la place manque et la recherche de discrétion. Le rapport qualité prix est très élevé, de plus avec le Brexit des frais de douanes s'applique désormais (+77 Euros pour moi payé a DHL ! ). Personnellement j'invite les OM et surtout les SWL a construire eux mêmes leur propre Dual Beam Pro Merci encore, Best regards Sir, 73's

@TechMindsOfficial

23 күн бұрын

That's why I used a remote tuner a few meters away from the feed point of the antenna, meaning less loss, less coax radiating etc. Cheers (PS, I dont speak or read french, but google translate did) :-)

JONEM, QULA A MEDIDA DESSA ANTENA, O BUMM É 5MTS E O RADIAIS SAO 2,5 MTS??? COM BALUM 4:1 :??

I bought the same antenna I tell you the truth compare with a cobweb I saw the sun finally . Great report from 20 mt to 6 mt and I manage to great dx in ssb . I’m using the same rotator not problems at all . 73 de 2e0bjl

@Davidm-M0TPT

2 ай бұрын

what sort of SWR did you see on 20, I have a acom 2000a and unsure if it would tune it ?

@marcoplacidi9975

2 ай бұрын

Well I’m using 7300 internal tuner I’m tuning without problem

@stephengrey8512

2 ай бұрын

How did compare to the cobweb ??thanks Steve

@marcoplacidi9975

2 ай бұрын

@@stephengrey8512 hi mate , well I had the cobweb for 4 years always struggling to do great dx in ssb but now yes !!! another thing the cobweb are great in 20,17,15 mt but not in 15,10 and 6 mt and quite hard to tune as well . Anyway with this antenna I can see a great reports in all the bands in ssb and digital .

@stephengrey8512

2 ай бұрын

Ok thanks am going to definitely buy now many thanks stephen

Is it a horizontally polarised antenna ? (di-pole type). If only I could persuade the wife and neighbours as noise floor is the bane of my HF life. 73 M7BLC.

@johnratcliffe6438

2 ай бұрын

Consider the Ciro Mini Loop. Stands 2m high. Should sort your noise out.

@BusDriverRFI

2 ай бұрын

You need to look at the source of your noise before you can solve your noise issues.

@johnratcliffe6438

2 ай бұрын

@@BusDriverRFI But you may not be able to do anything about it. Such as uncooporative neighbours.

@BusDriverRFI

2 ай бұрын

@@johnratcliffe6438 that is true, however you won't fix the issue without knowing what it is. You can minimize the noise by different methods depending on what the noise issue is. If you know what it is, at least you will have a piece of mind as to what you are up against and work towards making things better knowing what you know. I have had a lot of trouble with power line noises in the past. 10 over S9. Then you have to deal with the power company. It helps to find the insulator issues. It could be LEDs or wall wart power supplies. It could be an April Air humidifier. If you have an uncooperative causing noise, try moving the antenna away from there. Without knowing, you can't really begin to solve it.

Curious as to what the transformer is or is it just a 1:1 choke? Tnx for another interesting video. de VK3AWA

@OllieVK

2 ай бұрын

4:1 voltage balun. It's on his site under the technical docs.

What's with the crazy costume?

I do not like the phrase in the Specification: "This antenna requires an ATU to minimise the reflected power". You will still have reflected power (and corresponding losses) on the feedline but with the ATU just keep the transmitter happy. The only way an ATU can minimise reflected power is when placed at the feedpoint.

noise ? try grounding your end-fed via a resistor. [hint] ohms law and a calculator.

One orients an antenna based on Great Circle azimuth calculations, not Mercator Map depictions.

@johnblanchard8601

2 ай бұрын

One also orients the antenna for the the strongest signal be it long haul or direct....

@BrianG61UK

2 ай бұрын

A circular azimuthal map with you at the centre is easiest of all. The map he used certainly didn't look like an azimuthal equal-area projection, but maybe it was more or less azimuthal.

I think the conductivity of the braided wire connection will degrade over time due to being outside in the elements.Will that be a concern in the near future?

Don't test another antenna will you? I don't want HF to be as bad ever again! 😁

ATU losses are almost imaginary. RF energy cares nothing about an antennas characteristic impedance. Multi banding is a great way to get on the air. X

Didn't see any SWR curves. You sound like using 2 tuners getting some signal where there is never a proper resonance. Typical for a G5RV graduate where bandwidth is not really defined. Cheap in materials and good in crowded areas where dx is just what is over a mile.

@OllieVK

2 ай бұрын

info on his website if you cared to look it up.

Dipole, not a beam. Sad, just sad...

@Htfhjooffhgghwwwwdf

2 ай бұрын

Yes I agree it should be named more appropriately inline with what it is. It could be a trap for those less technically inclined thinking they are buying a beam.