I've been looking for a really small TNC that can also do Pactor / Amtor for mobile use. All of the small ones I've found so far can do packet, at best. Does anyone know of anything I haven't run across yet?

For those modes, I'm guessing you'll have a laptop with you.

Have you considered soundcard modem for that? Just use something like a Buxcomm Rascal or a Signalink as the interface and run cables in/out of the soundcard on the laptop.

The software to use, just one example would be something like this (MixW).

http://www.mixw.net/

Already use mixw for most digital modes. It's really difficult, if not impractical to do pactor / amtor ARQ modes without a TNC. I need to use those specific modes.

Unfortunately, I don't think you can do full Pactor or AMTOR without a TNC. The TX/RX timing is way too critical to have your Windoze PC tending to other chores and trying to key-up on time.

You're going to have to run a TNC. Now, with that said...for Pactor, there's only about 3 or 4 to choose from. SCS for Pactor 2 or 3. For just Pactor 1, you can use an MFJ (no longer made) or a KAM unit.

I've been using a 1278 for years and years and years...seems to do OK. DO NOT go AFSK on this one...go ahead and run the FSK keyline and use the FSK terminal on your radio. You'll be much happier.

PACTOR and AMTOR keyboard-to-keyboard is a blast. I just wish there was more activity....

I actually have an AEA DSP-2232, that use for Pactor 1. It's just a little big to keep in the mobile permanently. I would love for someone to come up with a TNC that is really small that I could leave there. SCS units are fairly small, but boy are they $$$$

There is actually a way you can do Packet without a TNC, but I don't think it's possible at all to send Pactor without one.

Can you use the Rigblaster Plug and Play for those modes?

__________________
IC-756 PROII
IC-SP23
IC-PS125
Palstar AT1KP Antenna Tuner
Rigblaster pro
IC-2200H
SM20 Microphone
MD-100 Microphone
Yaesu FT897D
IMAX 2000
Inverted "V' Diploe
4 element 2 Meter beam and Rotator
Astron SS25

No. The rigblaster is an interface between your rig and your PC that basically takes the sound card "sounds" and passes it into the mic or digital input of your rig. You may or may not need something like that depending on your rig and how creative you are at building your own. You also need some software for the digital modes you can use with a rigblaster. Perhaps I'll start a thread discussing some of the digital modes and what you need and can do with them. Anyway, Pactor & Amtor require handshaking that works kind've like an old fashioned computer modem. There isn't a way to really do this with just a software solution.

Mole',
I've been meaning to ask. You do know that if you're using a laptop for that amtor/packet, mobile, that you can find software 'TNC' programs that use the sound card as the interface, right? No idea if they would satisfy all of your requirements, but it should at least make it possible.
- 'Doc