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Can I receive down packet with only a scanner or I need a modem/tnc?

strat – November 26, 2009 – 21:50

Hi,
I'm listening from north italy.
Can I receive down packet with only a scanner or I need a modem/tnc?
I receive a powerfull signal but I don't know how to decode it.
Thanx

Packet Radio
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Re: decode packet with modem/tnc or soundcard.

pd0rkc – November 26, 2009 – 22:04

Hello unknown Italian man,

You can decode ISS packet with your soundcard.
But you have to build an interface to protect your soundcard!!!
I use this interface: http://pi4frg.cjb.net/pskbox/
If you are SWL station, you need to build something with
1 transformer.

First you need AGW packet soundcard driver.
http://www.sv2agw.com/downloads/agwpe.zip

After starting AGW than start UISS:
http://users.belgacom.net/mysoftware/UISS_Setup.exe

This is how the UISS software look like:
http://pd0rkc.ontwikkel.nl/uiss.html

Use google search engine to find websites where
they explain how to configure the softare.
Search: AGW Packet engine

73's Cor PD0RKC

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Thank you!!! I'll try

strat – November 26, 2009 – 22:14

Thank you!!!
I'll try tomorrow!

Marco

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Soundcard interface to decode packet from ISS!

pd0rkc – November 26, 2009 – 22:24

You only need to build the part for RX with:
http://www.xs4all.nl/~typens/frag/pskbox/circpsk.jpg
L1 = 1:1 transformer 600 ohm impedance (I prefer Etal transformers).
C1 = 0,1uF is the same as 100nf capacitor
C3 = 0,1uF is the same as 100nf capacitor
P1 = 1Kohm variable resistor

The other circuits you do not need to build, that is for TX.

J3 With an audio coax cable you go from interface to external speaker connector of your scanner.
J1 With an audio coax cable you go from interface to mic in of your soundcard.

Build it in a little plastic box (not metal!!!).

This interface works perfect for all digital modes: SSTV, PSK, PACKET etc.....
In the past I also decoded weak EME signals with WJST software!

73's Cor PD0RKC

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