Antenna comparison: Homebrew DX Commander vs home brew delta loop

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  • เผยแพร่เมื่อ 4 เม.ย. 2022
  • A comparison of the all band vertical based on a DX Commander and my 80m delta loop fed with 4:1 balun and about 6m high...

ความคิดเห็น • 27

  • @DXCommanderHQ
    @DXCommanderHQ 2 ปีที่แล้ว +5

    OK, so comparing a vertical -vs- any horizontal antenna on low bands: Ideally do low-angle A/B tests after midnight for longer low-band-skip not at 17:00 when skip is still high (Germany will be about 35 degrees or greater). A low-to-ground dipole (not just a delta loop) will ALWAYS outperform RX during the day over a vertical on the lower bands. The best method is to RX in stereo on BOTH antennas at the same time (left ant A and right ant B) [users need a twin VFO radio for that]. This is how I transmit my livestreams. Then for headphone users, you can actually hear the drift across your ears. Some people think QSB when it's actually polarisation changes between antennas. So I look forward to your next test! Callum. (PS - most of this for users who might cruise into this video and then read the comments - not specifically you :)

    • @ianxbu5091
      @ianxbu5091  2 ปีที่แล้ว

      Hi Callum! Yes no worries. I did try to mention the radiation angle differences of the two antennas. Its the nice quiet receive I like about the loop. Ironically the delta loop was taken from one of your videos too, thanks. Hope you're getting sorted again, Ian

    • @piquat1
      @piquat1 2 ปีที่แล้ว

      @@ianxbu5091 Is that extra noise local? And if not, would the noise be coming in from a high or low radiation angle?

    • @ianxbu5091
      @ianxbu5091  2 ปีที่แล้ว

      @@piquat1 I'd say its local so radiation angle wont effect it. It's much better at weekends or in the evening. It comes from local businesses!

    • @piquat1
      @piquat1 2 ปีที่แล้ว

      @@ianxbu5091 That's what I was hoping considering I live in the middle of nowhere. Thanks.

    • @ianxbu5091
      @ianxbu5091  2 ปีที่แล้ว +1

      @@piquat1 go for it, great antennas and multi band without ATU. You just have to remember about radiation angles hence what Callum states above and what I tried to make clear in the video. My loop is low to the ground so better for local work, but also quieter anyway as loops are, hence why i use it as a websdr antenna

  • @davidc5027
    @davidc5027 2 ปีที่แล้ว +1

    This is what I love about the hobby, experimentation. I run a 56 Meter long horizontal antenna about 10 meters high, fed with 600 Ohm open wire with a 4:1 balun, and it is a really good performer, and I couldn't be happier. However, if I didn't have a loop, and bought a DX Commander I would be very happy with it as well. The best antenna is the one that works best for you. Still, this is a good comparison and I've done a few myself and had similar results. The loop is quieter and mainly because a lot of man made interference is more vertically polarized.

  • @YllaStar95970
    @YllaStar95970 2 ปีที่แล้ว

    That noise level can be brought down even more via diversity, l like that function.

    • @ianxbu5091
      @ianxbu5091  2 ปีที่แล้ว

      Unfortunately the Anan10E doesn't have the capability due to only a single ADC. You need the models with Dual ADC for that to work such as 100D, 200D etc (D = Dual ADC!)

    • @YllaStar95970
      @YllaStar95970 2 ปีที่แล้ว +1

      @@ianxbu5091 l've only found one 100 available in Europe, l believe it is the last one.
      I hope to place an order for a Charly25, early next month, as they are still available in Q3, it too will run Thetis.

  • @Philip-KA4KOE
    @Philip-KA4KOE หลายเดือนก่อน

    You didn't say when you were switching

  • @KA4UPW
    @KA4UPW 2 ปีที่แล้ว +1

    What Software is that ?

    • @ianxbu5091
      @ianxbu5091  2 ปีที่แล้ว +1

      The radio software is called Thetis

    • @KA4UPW
      @KA4UPW 2 ปีที่แล้ว +1

      @@ianxbu5091 how did you put the world map into the background? Very unique, very cool!

    • @ianxbu5091
      @ianxbu5091  2 ปีที่แล้ว +1

      @@KA4UPW its a custom skin from here: www.w1aex.com/hpsdr/hpsdr.html

    • @KA4UPW
      @KA4UPW 2 ปีที่แล้ว

      @@ianxbu5091
      I want to get that and give it a try.
      Thanks
      James KA4UPW

    • @KB2AT
      @KB2AT 2 ปีที่แล้ว

      That with a flex? Or Anan?

  • @ON8EI
    @ON8EI ปีที่แล้ว

    Why are you not using NR2?

    • @ianxbu5091
      @ianxbu5091  ปีที่แล้ว +1

      I dont like the sound it makes

  • @robj1646
    @robj1646 2 ปีที่แล้ว

    Are you sure the noise is not locally caused?

    • @ianxbu5091
      @ianxbu5091  2 ปีที่แล้ว

      Most probably from the neighbours, but it shows how much less the loop suffers given the antennas are next to each other

    • @camworkstv
      @camworkstv 2 ปีที่แล้ว +1

      @@ianxbu5091It is well known that verticals pick up more noise. Especially local noise. But can the Delta Loop do all the bands that the DXC can? Besides, it's not the noise level that matters, but the SNR.

    • @ianxbu5091
      @ianxbu5091  2 ปีที่แล้ว

      @@camworkstv Yes the delta loop works on every harmonic so is a true milti bander. It was my first antenna. Its not as good on the higher bands as the vertical though. Alot of this is down to the radiation angle of both antennas. Verticals have a low angle for longer hops and the low-to-the-ground loop has a high angle which is better for short hops. Good to have both to switch between, but even then the loop simply hears better and is much nicer to listen to as you can hear...

    • @camworkstv
      @camworkstv 2 ปีที่แล้ว

      @@ianxbu5091 I didn't have the opportunity to listen to the sound (I'm at work), but nobody prevents you from using a receiving and a transmitting antenna. Especially with transceivers with two sockets like the IC-7610. Unfortunately my 7300 has only one antenna socket, but I have no big problems with local noise here.

    • @ianxbu5091
      @ianxbu5091  2 ปีที่แล้ว

      @@camworkstv this noise goes after 5pm when the local businesses close and turn off their computers!