[AMRadio] Re: [BULK] GB> HD-15 PSK Interface

Bob Macklin macklinbob at msn.com
Thu Feb 17 14:16:23 EST 2005

I don't seem to have a problem with the signal level going in to the sound
card. On strong signals WinPSK tells me to reduce the input level. But with
this setup I am able to receive PSK signals I cannot hear in the station

Bob Macklin
Seattle, Wa.


----- Original Message ----- 
From: "Bob Roehrig" <broehrig at aurora.edu>
To: "Bob Macklin" <macklinbob at msn.com>
Cc: "GlowBugs" <glowbugs at piobaire.mines.uidaho.edu>; "AM Radio"
<amradio at mailman.qth.net>
Sent: Thursday, February 17, 2005 10:29 AM
Subject: Re: [BULK] GB> HD-15 PSK Interface

> On Thu, 17 Feb 2005, Bob Macklin wrote:
> > I commected the Rx transformer with the 8ohm winding to the speaker and
> > the 500ohm winding going to the sound card LINE IN.
> >
> > I can copy PSK QSOs that I cannot even hear. I am very impressed with
> > technology.
> You are getting quite a voltage step-up with that arrangement. You will
> get more than enough level into the sound card that way. I would be a bit
> worried about overdoing it and maybe wiping out the sound card input
> circuit.
>                                Bob Roehrig
>                      Aurora University    Telecom dept.
>                      broehrig at aurora.edu    73 de K9EUI
>                      630-844-4898      fax 630-844-4222
>                      "Nostalgia is a thing of the past"

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