Vacuum tube based keyers

Discussion in 'Straight Keys - CW Enthusiasts' started by AA4OO, Apr 5, 2018.

ad: L-HROutlet
ad: l-rl
ad: Left-2
ad: abrind-2
ad: L-MFJ
ad: Left-3
ad: Subscribe
  1. AA4OO

    AA4OO XML Subscriber QRZ Page

    No, not for sending ahead. Buffer is probably a misleading term.

    Modern electronic keyers track if you've pressed the opposite key while the current element is completing. The HA-1 does not.

    So if you send (for instance) a 'N' character DAH followed by DIT and hit and release the DIT before the DAH has completed, it will be lost. So characters that have DAH-DIT or DAH-DIT-DAH can turn into DAH or DAH-DAH if your hasty with your thumb.

    A modern keyer will not lose the DIT because it's tracking keypresses even while an element is being sent. The HA-1 wakes up anew after every element to see what the operator has in store for it.

    Iambic Mode B actually tracks squeeze keying to buffer the extra-opposite element after you've let go. You either love or hate that mode.
    W9RAC likes this.
  2. WA1GXC

    WA1GXC Ham Member QRZ Page

    Find yourself a "Mon Key" manufactured by the Electric Eye Company in the late 40's.

    You don't need no stinkin' artisan paddle by Svengali, everything's right there for you

    in one handsome and compact unit. Transformerless, 120V pulsing DC coursing through its

    sophisticated circuits, unisolated from the power grid. Put some style and zip into your


    You might want to pass on going on the air during damp weather.

    Nice knowing ya' !

    G L
    Last edited: Feb 18, 2020
  3. AA4OO

    AA4OO XML Subscriber QRZ Page

    Found an image of a Mon-Key 5

    Looks totally safe... They enclosed the key in a plastic case... However the cover for the electronics appears to be metal.

    Just lick your finger and flick the case.. if you get the tingles reverse the non-polarized plug and you should be good to go.

    I gotta find one of these.


    That's a bunch of caps to replace.
    WA1GXC likes this.
  4. WA1GXC

    WA1GXC Ham Member QRZ Page

    When you shut the power off, the sidetone oscillator lets out a hideous wail, like,

    "You got me!"

Share This Page

ad: elecraft