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IL2P questions

 

I started playing with DW, and things are working. At least I can decode some HF traffic.

I wanted to try out IL2P, and read through the documentation.

I have a few questions:

Does DW implement all L1 suggested bt IL2P v0.6 spec, like QPSK and PSK?

Do you know any BBS or other station I can test with?

I use DW 1.7

Thanks and 73 de HA5OGL

--
Levente Kovacs
Senior Electronic Engineer

W:

 

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This list really isn't so much about operation but Googleng around, I see:

?? /g/bpq32/topic/il2p_in_hf/107684529 ?

--David
KI6ZHD

On 04/25/2025 06:12 AM, HA5OGL via groups.io wrote:

I started playing with DW, and things are working. At least I can decode some HF traffic.

I wanted to try out IL2P, and read through the documentation.

I have a few questions:

Does DW implement all L1 suggested bt IL2P v0.6 spec, like QPSK and PSK?

Do you know any BBS or other station I can test with?

I use DW 1.7

Thanks and 73 de HA5OGL


 

There are two different independent concepts:
?
(1) Modem (L1) which converts between an audio stream and data bits with no structure.
?
direwolf supports the V.26B QPSK mode used by MFJ and a couple other companies back in the previous Century and at least one other software TNC.
Details: ?
"QPSK" a generic term;? I don't know if the NinoTNC uses this de facto standard or some other variation.
?
(2) Framing (L2) which refers to how groups of bits are sent over a communication channel.
?
This includes AX.25, FX.25, and IL2P.
direwolf implements IL2P and was tested to to be complete interoperable with the NinoTNC.
Since that time NinoTNC added a extra CRC at the end for better error detection.
direwolf does not have this yet.
There could be a situation where you can hear them but they can't hear you due to lack of the new CRC at the end.
?
I hope this helps.
?
73,
John WB2OSZ
 

Several of us running BPQ systems on 40m have been using IL2P 300b for several years now centered at 7103.3 so?unless you adjust the default 1600 / 1800 tones use USB dial 7101.6 or LSB dial 7105. It is quite busy in this ACDS subband but IL2P activity is light at least what can be heard well enough to decode here. Mheard for the IL2P port here for the last 12 hours or so shows only:

mh 7
WLHNOD:WA3WLH-7} Heard List for Port 7
KB9PVH???? 00:00:59:32
K5DAT-7??? 00:01:37:01
KB9PVH-1?? 00:02:03:04
PVHBBS???? 00:02:04:59
KB9PVH-7?? 00:02:13:31
VA3PIX-7?? 00:02:21:07
KB9PVH???? 00:02:31:32
N9SEO-3??? 00:04:18:40
N9SEO-1??? 00:09:59:48
WW6Q-1???? 00:12:45:27

There is similar IL2P activity on 20m centered somewhere around 14103.3 but my 20m port is too far above that range to provide mheard details.

73 de Rich WA3WLH

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