[GreenKeys] tapping ST-6 for RS232
k0bx at arrl.net
k0bx at arrl.net
Mon Jan 26 14:47:54 EST 2009
My context was within the time frame of Hoff's ST-6, 1967 or so.
They didn't have FSK with spark-gap!
Joe K0BX
Stop the insanity!
Please do not add me to any distribution lists (Joke, Stories or Junk) without my permission.
--- On Mon, 1/26/09, Jim Haynes <jhhaynes at earthlink.net> wrote:
> From: Jim Haynes <jhhaynes at earthlink.net>
> Subject: Re: [GreenKeys] tapping ST-6 for RS232
> To: "k0bx at arrl.net" <k0bx at arrl.net>
> Cc: greenkeys at mailman.qth.net, WA5CAB at cs.com
> Date: Monday, January 26, 2009, 11:18 AM
> On Mon, 26 Jan 2009, k0bx at arrl.net wrote:
>
> > Back then, most commercial made ham transceiver did
> not have the ability
> > to operate FSK. So we used AFSK on both HF (LSB) or
> VHF.
> >
> Waaaaay back then we didn't have transceivers; we had
> separate
> transmitters and receivers. And transmitters didn't do
> SSB, so we
> had to add a "diode modulator" to the VFO to get
> FSK. But
> we did use AFSK on VHF equipment, first AM, then FM.
>
> Jim W6JVE
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