[Icom] IC-746 with PSK 31

Mon, 17 Feb 2003 08:38:19 -0500

Thanks.  How many people on the thread use an attenuator?

----- Original Message ----- 
From: "Marsh Parker" <[email protected]>
To: <[email protected]>
Sent: Sunday, February 16, 2003 3:56 PM
Subject: Re: [Icom] IC-746 with PSK 31

> This info is copied from the Digipan help menu.
>
> When you are transmitting, and not typing or sending text, the Transmit
> Volume should be increased until the RF output power of the transceiver
> just stops increasing, and then reduced until the power falls to half of
> the amount when it just stopped increasing. This should result in
> maximum undistorted output power under PSK31 operation. However, some
> transceivers cannot handle the duty cycle of PSK31 without overheating.
> In this case, quickly reduce the power until the transceiver is running
> at the recommended power output for continuous-duty operation.
>
> In general, for a normal 100w rig, you will see about 40-50 watts out
> when adjusted properly.  Also have someone check your IMD.  It should be
> -25 to -30 for a good signal.
> 73,
> Marsh, NC7V
>
> W8OKN wrote:
>
> >I just finished the cable for the 718, made on my own!!  How can I be
> >assured that I am not overdriving the transmit?
> >
> >W8OKN
> >
> >
> >----- Original Message ----- 
> >From: <[email protected]>
> >To: <[email protected]>
> >Sent: Sunday, February 16, 2003 10:40 AM
> >Subject: [Icom] IC-746 with PSK 31
> >
> >
> >
> >
> >>In a message dated 2/13/03 4:10:38 AM Eastern Standard Time,
> >>[email protected] writes:
> >>
> >>
> >>
> >>
> >>>>I'm starting to get into PSK 31 and was reading the manual about ACC 1
> >>>>
> >>>>
> >on
> >
> >
> >>>>the back.  On paper, that looks like the best way to wire up the 746
to
> >>>>work with the sound card programs- even simpler than using a
> >>>>
> >>>>
> >RigBlaster.
> >
> >
> >>I've been using this direct setup for almost a year. It works great. At
> >>
> >>
> >first
> >
> >
> >>I was worried that it would be dangerous to the rig. It may be but I
> >>
> >>
> >haven't
> >
> >
> >>noticed anything wrong. I've thought about using the Rigblaster, but
can't
> >>figure out why I would want to. Any ideas?
> >>
> >>Jimmy Walker
> >>WA4ILO
> >>Macon, GA
> >>
> >>
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> >>----
> >>Your Moderator: Dick Flanagan W6OLD, [email protected]
> >>Icom Users Net: Sundays, 1700Z, 14.315 MHz
> >>Icom FAQ: http://www.qsl.net/icom/
> >>
> >>
> >
> >----
> >Your Moderator: Dick Flanagan W6OLD, [email protected]
> >Icom Users Net: Sundays, 1700Z, 14.315 MHz
> >Icom FAQ: http://www.qsl.net/icom/
> >
> >
> >
>
>
>
> ----
> Your Moderator: Dick Flanagan W6OLD, [email protected]
> Icom Users Net: Sundays, 1700Z, 14.315 MHz
> Icom FAQ: http://www.qsl.net/icom/