How Many HF Bands Do You Have Antennas For?

Discussion in 'Survey Center' started by NN4RH, Aug 12, 2017.

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What bands do you have antennas for ?

  1. VHF/UHF Only

    5 vote(s)
    3.5%
  2. Only 1 HF band

    4 vote(s)
    2.8%
  3. 2-3 HF bands

    10 vote(s)
    7.0%
  4. 4-5 HF bands

    25 vote(s)
    17.5%
  5. 6 or more HF bands

    99 vote(s)
    69.2%
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  1. KM4DYX

    KM4DYX Ham Member QRZ Page

    At the moment I've got an 80/40/30/20 segment dipole hoisted up. That could change in the next few minutes. I'm just wired that way. (see what I did there...)
     
  2. W7UUU

    W7UUU Principal Moderator Lifetime Member 133 Administrator Volunteer Moderator Platinum Subscriber Life Member QRZ Page

    A better way to have phrased the question is:

    "How many HF bands are you able to operate effectively on?"

    A ladderline-fed 160m or 80m dipole at 150 feet would probably do very well on all of them.

    A dummy load would as well - but not "effectively"

    Dave
    W7UUU
     
    N2EY likes this.
  3. KJ3N

    KJ3N Ham Member QRZ Page

    Ashamed and pitiful? That's being rather hard on yourself, isn't it?
     
  4. KJ3N

    KJ3N Ham Member QRZ Page

    All of them. :p
     
    W7UUU likes this.
  5. K8PG

    K8PG QRZ Lifetime Member #333 Platinum Subscriber Life Member QRZ Page

    All of them .
     
  6. W0LEV

    W0LEV Ham Member QRZ Page

    One antenna serves all HF: 250-foot long doublet fed with open wire with Twin-T differential matching network (homebrew) in the shack. Each side of the Twin-T matching network has a robust quadfilar common-mode choke. I have an HP VNA to measure the CM chokes. I went quadfilar to reduce losses. The chokes function in a bifilar configuration. Windings 1 and 3 and connected together while windings 2 and 4 and connected together. This reduces losses as well as reduces the characteristic impedance of each choke as a length of transmission line. The Davis RF highly flexible insulated 'antenna wire' makes wonderful conductors for winding these CM chokes. They're wound on dual 4-inch OD 43 material.

    Dave - WØLEV
     
    N2EY likes this.
  7. KG5THG

    KG5THG Platinum Subscriber Platinum Subscriber QRZ Page

    As my antenna is on poles setup with pulleys, I have different dipoles cut for each band and I change it out based on what I want to operate. Doesn't take hardly any time at all to switch out for one band to the next. Maybe one day I'll try a multi-band.
     
  8. WA7PRC

    WA7PRC Ham Member QRZ Page

    • 80/160m: cage inverted vee, apex @ 70' AGL on 80m), driven against ground as a vertical on 160m (link).
    • 40/15m: dipole @ 65' AGL.
    • 20m: λ/2 vertical on the roof (link).
    • 40/20/15/10m: Force12 C-4XL yagi @ 72' AGL (link) *.
    • 10m: Cushcraft AR-10 λ/2 vertical above the yagi @ 83' AGL.
    • 20/15/10m: Cushcraft A3S yagi @ 30' AGL (no longer used).
    * It also loads on 30, 17 & 12m w/ minimal trouble.
     
    N2EY likes this.
  9. N8AFT

    N8AFT Ham Member QRZ Page

    80/40 vert on gnd.
    10-80 Doublet open wired @ 30'
    10-40 Doublet open wired @ 30'
    160 vert on gnd.
     
  10. KF4ZGZ

    KF4ZGZ Ham Member QRZ Page

    You should have also included uhf/vhf/hf.
    I have 70cm-160m capability. It's just that the 160m option sux.

    Matt
     

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