Zero Beat -off frequency

Discussion in 'On-Air Operations - Q&A' started by KD2RON, Oct 5, 2017.

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  1. WR2E

    WR2E Ham Member QRZ Page

    While a couple hundred Hertz isn't much and the bands not nearly as crowded as they used to be it's still good practice to get close since that will occupy the least bandwidth.

    Don't some of the new digs have a feature that automatically zero beats, I think I read that about he ts590...
  2. AI3V

    AI3V Ham Member QRZ Page

    Well I would certainly try my best!!

    My PS was intended to be a toung-in-cheak reply,
    Kinda like "wherever you go, there you are"

    Also a run at the newbie
    Practice of setting the rig to an "exact" freq, 7.000.000 and thinking you are actually on that exact frequency.

    GPS disciplined oscillators excluded.

  3. SM0AOM

    SM0AOM Ham Member QRZ Page

    There is a lot of faith in digital displays, which not always is founded in reality.

    A former colleague had a lot with salesmen to do, and once got the question about
    hat a digital display with 1 Hz resolution on a TCXO timebase radio actually shows.

    His answer was:

    "The display readout can be compared to a statement of a politician.
    It is an aim, not a promise..." :)

    N8RKD and K9ZMD like this.
  4. K8JD

    K8JD Ham Member QRZ Page

    When nobody cares about being on the same freq , that can be causing QRM to another QSO when you start getting 300-500 HZ apart. I use a narrow filter when the bands are noisy, (160, 80M) so if you can't figure out how to get within 200 Hz of where I am transmitting, I just can't hear you calling me.
  5. K8JD

    K8JD Ham Member QRZ Page

    Here we have WWV and WWVH to calibrate your rig against. Get out the book and find how to set your refrence osc if you are not DEAD ZERO with WWV on 5, 10, 15 or 20 MHz !!!
    Make sure that digi readout is not lying to you.
    I found out I was 3 HZ low on my FT990 but it has not changed in 5 years so I have not bothered taking all those screws out to fix it :D
  6. SM0AOM

    SM0AOM Ham Member QRZ Page

    You are "preaching to the choir" here.
    All my "Premium-Rx" and exciters are locked either to Rubidium standards or to GPS disciplined oscilators.

  7. K8JD

    K8JD Ham Member QRZ Page

    I checked the prices on some of those GPS standard time bases, used to lock freq on trunked network 800 MHz transceivers in some of our comm-sites, W O W $$$$$$ :eek:
  8. AF7XT

    AF7XT Ham Member QRZ Page

    What is this "RIT" You speak of ?
    Yes I know there are modifications that are cosmetically acceptable and relatively simple.
    That is not the point. There are so many other legacy, homebrew, QRP kit, transceivers out there.
    I've been meaning to reduce the offset in my TS-830S for just this reason but ...
    The TS-830 has a 800 CW offset and can be a brain fry to listen to after a few.
    I prefer something around 550Hz. Then again the Kenwood has RIT...
    I also have a Tempo 2020 with RIT but without offset. Since it unbalances the modulator to talk AM you transmit on frequency and RIT to listen. Trouble is there is no "spot" for receive even though it's an ear trick as much as tuning an unfamiliar SSB voice to nearly zero beat.
  9. VK4HAT

    VK4HAT Ham Member QRZ Page

    Your post just about sums it up for me, to many people are relying on technology and turning things into stupidities that just do not need to be. Just use your ears and be done with it, if it sounds fine, it is fine. To many spectrum police out there with their 60 inch monitors and waterfall displays seeing artifacts on the monitor that they cannot hear and probably just do not exist, without turning zero beating into something to moan about. Got a RIT use it, everyone's signal sounds perfectly 600hz offset to me :)
    N8AFT likes this.
  10. N8AFT

    N8AFT Ham Member QRZ Page

    AMEN Robert! Well Said OM!
    VK4HAT likes this.

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