[1000mp] FT1000MP SUB RX audio on RTTY/PKT sockets

Thu, 25 Apr 2002 19:30:10 -0000

Goetz:

Use the AF OUT stereo fixed-level audio outputs on the rear panel for your
RX audio. The jack provides 200 mV fixed level at 600 ohms for both audio
channels, but the source impedance is very low, so it is not a good idea to
tie the two outputs directly together. Feed them in stereo to your sound
card or chip and combine them either by setting your card to mono, if
possible, or by using a resistive combiner at the card outputs. Or you can
resistively sum them at the card input and use one channel.

Be aware that, in DUAL mode, the the two audio channels are not infinitely
separable in your headphones; if you are listening to a very weak DX station
and the pileup is loud, residual pileup audio leakage can degrade your copy
on the DX unless you leave DUAL mode to completely remove the sub-audio. On
most signals, however, your balance control will allow you the receive
flexibility you seek without any additional action.

Garry, NI6T

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of DJ3IW Goetz
> Sent: Thursday, April 25, 2002 12:39
> To: [email protected]
> Subject: [1000mp] FT1000MP SUB RX audio on RTTY/PKT sockets
>
>
> Hi everybody,
>
> I use both RTTY and PKT sockets for the digital modes. For RTTY DX pileups
> it would be great to use the SUB RX for reading the signals in the pile.
> However, only the MAIN RX audio is available at both sockets. You
> can switch
> both to the SUB RX audio, but due to the location of the switch
> this cannot
> be done fast and instantaneous. Has anyone found a modification
> or other way
> to conveniently switch back and forth between the MAIN/SUB RX
> audio for these
> RTTY/PKT sockets?
>
> 73 de Goetz
> [email protected]
>
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