[ML-Hams] Latest Donation

[Bruce Campbell]

There was an AX-25 TNC around there at one time. You would have all that
you need for a packet station.

On Sat, Oct 1, 2016 at 8:05 PM, Kris Kirby <kris at catonic.us> wrote:

> On Sat, 1 Oct 2016, Bruce Campbell wrote:
> > do you know there history?
>
> WA4DXP-1 was HSVN on 145.01, WA4DXP-5 was HSVN on 145.65, both Alinco
> DR-1200s; I believe WA4DXP-6 was 433.8 MHz using an RCA radio. Or
> WA4DXP-6 was 145.65, and WA4DXP-5 was something else...
>
> K4IQU (Dave Light) was the callsign of 146.94/34 before it had the N4HSV
> callsign on it. The BBS (K4BFT/K4BFT-1) had the club call as well.
>
> 144.97, 145.01, 145.05, and 145.09 were all used for 1200 bps AX.25
> packet radio, along with 145.65. 147.565 was used for 9600 bps packet.
> 433.8 was 2400 bps. The maximum common rate that fits in a voice channel
> without 'tricks' was 2400 bps. Motorola liked 3,600 Hz using MSK for
> trunking. 9600 bps required access to the modulator and discriminator
> because 9.6KHz was outside of the audio system's 300 - 4 KHz bandwidth.
>
> 1200 bps was the shipping data rate of the TAPR TNC2; 2400 bps and 9600
> bps required modems be installed on a 20-pin connector in the TNC2. MFJ
> must have sold 10,000 of those TNC2 clones.
>
> I refer to AX.25 1200-9600 bps as "802.11 dot slow."
>
> But then again, I still have my KPC-9612.
>
> --
> Kris Kirby, KE4AHR
> Disinformation Architect, Systems Mangler, & Network Mismanager
>
> _______________________________________________
> This is the hams mailing list.
> This list is for amateur radio discussion.
> To stop receiving mail from this list, write to
> hams-leave at lists.makerslocal.org.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.makerslocal.org/pipermail/hams/attachments/20161001/548e8725/attachment.html>