Inverted L 600M and 160M

Discussion in 'The Low Bands - 630/2200 Meters - VLF' started by KB1FGC, Feb 21, 2021.

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  1. KB1FGC

    KB1FGC Ham Member QRZ Page

    I was thinking of installing a 160M inverted L and 600 inverted L.Can I install both together as a 2 bander?This would save some space.Not sure if that is too complicated.I could sqeeze the 600M somewhere else if need be.
    Thanks
    Rich
     
  2. W0BTU

    W0BTU Ham Member QRZ Page

  3. K8JD

    K8JD Ham Member QRZ Page

    GET a BIG spool of wire for 630 M QW inv "L" ant .. 234/475 kHz = 493 ft of ant wire. Then you have to think of a huge ground counterpoise system !!
    I have been listening to 630 M, for a year and only have heard a few signals. Most were digi modes that I can not decode here.
     
  4. KB1FGC

    KB1FGC Ham Member QRZ Page

    Thanks for the tip.I have been listening on and off and only once did I hear some CW signals.Maybe I have to think about that.73
     
  5. N6UJM

    N6UJM Ham Member QRZ Page

    What radios will tx & rx the 600M band?? I really enjoy the 160M band and I'm intrigued by the 600M band.
     
  6. KB1FGC

    KB1FGC Ham Member QRZ Page

    Mini-kits makes a transverter for the transmit side.That would run off your radio and convert the frequency to the 600m band.There isn't too much out there were you can but it in one package.I know there is a radio out there that will do that and it may be around 700dollars for the transmitter I think.My Kenwood has an option that allows for using a transverter .If you don't have a radio that will do that then I think it has to be opened up and wired in,Beyond what I would do.here is the Mini-kits transvertor https://www.minikits.com.au/electronic-kits/transverters/eme223-630m
    check out this page,It may have the radio that I described above,I couldn't seem to find it.Bit this link will help you out a bit.http://www.472khz.org/pages/and-more/useful-links.php.For rceive ,A long antenna wire will do and any radio that can go down that low.I use my 160 1/4 wave dipole.But I can hear signals on my 80 meter dipole.That would at least get you started.You also need an amp,As you won't get much signal out of the antenna,So they use amps,Special built ones plus a few other things.A lot of guys should be able to help you better than me.
    Good luck

    73
    Rich
     
  7. K8JD

    K8JD Ham Member QRZ Page

    As more ops decide to play with those bands , maybe some more kits will be offered at a more reasonable price level.

    Seems like more hams are moving ito HOA communities and then complain they can't have any antennas and are limited to VHF/UHF repeaters by the antenna restriction.:eek:
    Who is left with property for some VLF monster antennas : ??? :rolleyes:
     
    N8AFT likes this.
  8. N8AFT

    N8AFT Ham Member QRZ Page

    I bet if Cushcraft was still operated by hams, like before they were sold time and time agn, their engineering staff would've indeed came up with a viable, legal sized LW vert just like their MA-160V !
    A Quite Superior RX/TX Top Band vert with a small footprint at a very reasonable price...
    I can tune mine from the shack for CW using an MN2700 Drake tuner on 15-20 es 40m. 30 is a straight shot like 1812kHz.
     
    Last edited: Aug 12, 2021
  9. AE5X

    AE5X Ham Member QRZ Page

    Here's what I suggest for a 160/630m antenna:

    Put up a 160m dipole as high as you can get it. If you have to add inductive loading to the legs, do it. Then, when you want to operate on 630m, operate the dipole as a T-topped vertical. In other words, the feedline becomes the radiating element and the dipole's legs become a capacity hat. You'll need an RF ground (radials) but you'd need them for an Inverted L as well.

    My 1W ERP 630m WSPR signal was heard in ZL with this antenna, though the vertical section was quite high (110 feet).
     
    Last edited: Aug 14, 2021
    NK8I and N3RYB like this.
  10. KM1H

    KM1H Ham Member QRZ Page

    Back when it was an experimenters band I was heard on CW in Sweden and CA on 630 with 5W out of the TX.
    The antenna was a vertical element about 3' away from the 180' tower with an inverted V top loading wires to bring it to a 1/4 wave. The radials started at about 12' high and tied into the ones for the 160M phased pair. RX was the same 750' Beverage Ive used for decades on 160 to even 30M at times.

    The antenna was temporary and came down in a wind storm a few weeks later.

    Ive no idea of VSWR, ground losses or anything else as I had nothing to test with back then at that frequency.

    A NanoVNA is here now if I ever get interested again but I would probably find a new rig that covered the band as the old setup was quite haywire.

    Carl
     
    NK8I likes this.

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