[aprssig] 9600 Baud East Coast Backbone

Ev Tupis w2ev at yahoo.com
Thu Aug 18 07:41:26 CDT 2016

It is a shame that 219 to 220 MHz (all digital allocation) is not available in most of the USA.
Alternatively, maybe it's time to petition the FCC to identify 147-148 MHz as a 1-MHz wide digital only allocation. lol

      From: Robert Bruninga via aprssig <aprssig at tapr.org>
 To: TAPR APRS Mailing List <aprssig at tapr.org> 
 Sent: Wednesday, August 17, 2016 11:34 PM
 Subject: [aprssig] 9600 Baud East Coast Backbone
We are dreaming of a 9600 baud East coasst packet backbone along the route of the APRS Golden Packet event.  http://aprs.org/ec9600net.html

I wonder if the 5W 220 MHz HT featured in QST this month would make a possible radio.  Many of these sites are high and adjacent to plenty of VHF and UHF commercial rigs.

Does that mean the 220 MHz is relatively free of front end overload at most commercial sites?
Could just a simple 1/4 wave coax stub bring the RF levels down to workable levels?

The radios are 5W and show 0.16uv sensitivity for $85.  Moving the backbone to 220 coiuld then allow either 2m or UHF for local user access to the backbone.  I had wanted 50W rigs for the 10 dB margin, but maybe 5W will do some of the links.  

I have zero experience with 220, so I thought I would ask here.

What is the channel we can use on 220 band for 9600 baud packet?


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