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PE1RRR > PACKET 24.12.21 14:42l 57 Lines 1839 Bytes #999 (0) @ WW
BID : 29900-PE1RRR
Read: GUEST
Subj: Where to find packet on 20m band
Path: IW8PGT<I3XTY<I0OJJ<EA2RCF<SR1BSZ<IW0QNL<ON0AR<DB0RES<DB0ERF<DK0WUE<
PE1RRR
Sent: 211224/1235Z @:PE1RRR.#NBW.NLD.EURO #:29900 [Rijen] $:29900-PE1RRR
From: PE1RRR@PE1RRR.#NBW.NLD.EURO
To : PACKET@WW
This article contains an image available on the original post
located at
https://eindhoven.space/2021/12/24/where-to-find-packet-on-20-meter-band/
This was created to answer frequently asked questions posted to a
popular group online.
DECEMBER 24, 2021 BY RED
The legacy packet network frequency known as “Net105” is reference
to the lower sideband frequency 14.105 LSB with 300 baud AX/FX.25
tone pairs configured at 1600hz and 1800hz respectively- 1700hz
being the center frequency.
Some stations run multiple modes as well as additional packet
channels for BBS interlinks etc, these can be found only on the
USB frequency as the multi modes such as VARA, ARDOP and Robust
Packet are sideband sensitive and sit at a fixed center frequency of
1500hz.
The USB dial frequency of 14.1022 has been selected to keep
backwards compatibility with Net105 as well as provide an additional
allocation to handle BBS traffic to help increase throughput.
The equivalent TNC tone pair for Net105 on the USB frequency is
1000hz and 1200hz, 1100hz being the center frequency, the additional
AX/FX.25 300 baud allocation pair is at 1900hz and 2100hz (2000hz
center frequency).
The multimodes run at a fixed center frequency at 1500hz, with the
packet channels described sitting on either side.
[image with visual indicators of how to set up QtSoundModem/UZ7HO
soundmodem]
https://winterbynes.files.wordpress.com/2021/12/img_3115.jpg?w=2048
QtSoundModem
The multi platform ported version of UZ7HO soundmodem by G8BPQ.
You may want to try running QtSoundModem as it helps to visualise
the spectrum with a waterfall.
Download QtSoundModem here:
https://www.cantab.net/users/john.wiseman/Documents/QtSoundModem.html
73 and Merry Christmas.
--
PE1RRR <PE1RRR@PE1RRR.#NBW.NLD.EURO>
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