[OZAPRS] FT-290R + Signalink USB

[Nick (VK3TY)]

Hi there,

I used to used my FT290R Mk I on Packet back in the early days.  The
interface cable went directly to the multi-pin plug without having to insert
or bypass anything. I'll be back on air with AX.25 signals shortly - using
my Yaesu FT-290R and original interface a cable.

The issue of frequency response is somewhat a mute point when only two
(mark/space) tones are used.  

The IRLP link I provide does have an issue using a direct link to the
microphone and audio output.  The radio circuits have de-emphasis and
pre-emphasis can have a significant effect on the full voice frequency
range.  That is why with IRLP, audio is take off post the discriminator and
mic. audio is fed in at another point leaving the normal microphone and
speaker points alone.

Nick - VK3TY

-----Original Message-----
From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
Behalf Of Peter Dodd
Sent: Thursday, 9 February 2012 10:37 PM
To: Australian APRS Users
Subject: Re: [OZAPRS] FT-290R + Signalink USB

Hi,
I have a FT-290R but have not used it with Signal link (because I don't have

one).

I recall seeing that a capacitor possibly need removing from the mic cct. to

use the radio for packet (something about frequency response).

Not sure if I can find article.

Regards

Peter
VK7KPC
----- Original Message ----- 
From: "Liz" <edodd at billiau.net>
To: <OZAPRS at aprs.net.au>
Sent: Thursday, February 09, 2012 10:07 PM
Subject: [OZAPRS] FT-290R + Signalink USB


> Has anyone got this combination of an FT-290R and a Signalink USB
> operational?
> I don't think reinventing the wheel is worthwhile, so I thought I'd ask.
>
> I also realise that the radio is old, and no one may have one in use.
>
> Liz
> _______________________________________________
> OZAPRS mailing list
> OZAPRS at aprs.net.au
> http://lists.aprs.net.au/mailman/listinfo/ozaprs 

_______________________________________________
OZAPRS mailing list
OZAPRS at aprs.net.au
http://lists.aprs.net.au/mailman/listinfo/ozaprs