Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site mouton.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!mouton!karn From: karn@mouton.UUCP Newsgroups: net.ham-radio Subject: Re: packet help Message-ID: <202@mouton.UUCP> Date: Thu, 1-Nov-84 19:05:16 EST Article-I.D.: mouton.202 Posted: Thu Nov 1 19:05:16 1984 Date-Received: Fri, 2-Nov-84 07:04:30 EST References: <168@zps.UUCP> Organization: Bell Communications Research, Inc Lines: 17 Packet repeaters are actually fairly easy to build, as they can be much simpler than full TNCs. Many of the current TNCs can also function simultaneously as digipeaters, and in many areas the "local digipeater" is just the personal TNC of a ham who happens to be in a good location and makes a point to leave his rig on. If you want to build a "dedicated" digipeater, you can make do with less $$. All a digipeater has to do is receive HDLC frames, check the address, set a bit and retransmit. The old VADCG boards, which without the upgrade kit have too little memory to be truly useful as TNCs, can perform this job easily; the software has been written by KE3Z and WB4JFI, and is available from AMRAD. Many other "ad-hoc" digipeaters have been constructed, but the VADCG board will probably be the easiest route for most people. Phil